Journal of Hazardous Materials最新文献

{"title":"Contrasting outcomes and mechanisms of immunotoxicity of different water-soluble tungsten species in zebrafish (Danio rerio)","authors":"Yu Dai, Wenjuan Wang, Benjamin C. Bostick, Huihui Du, Jing Sun, Chengshuai Liu","doi":"10.1016/j.jhazmat.2025.138798","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138798","url":null,"abstract":"Exposure to tungsten, an emerging pollutant, is linked to cancer incidence and causes immune dysfunction. Till date the impact of tungsten speciation on immunotoxicity remains unclear. Here, we contrasted the immunotoxic effects of monomeric tungstate (W₁) and polytungstate, the main forms of tungsten in environmental waters, on adult zebrafish, following static short-term (14 days) exposure to 0–215<!-- --> <!-- -->mg<!-- --> <!-- -->L⁻¹ tungsten. In the W₁- and phosphotungstate (PW₁₂)-treated systems, W₁ was the dominant species that accounted for &gt;92% tungsten, whereas metatungstate (W₁₂) mainly (&gt;59%) existed as polytungstates with 2, 4, and 6 tungsten atoms. W₁ exposure caused 1% mortality, with tungsten primarily accumulating in metabolically active organs, brain, and gill. Contrastingly, polytungstate exposure caused up to 75% mortality and 16 times higher tungsten bioaccumulation. Furthermore, polytungstate predominantly accumulated in the immune organs, intestine, and spleen, leading to intestinal villi necrosis and splenic melano-macrophage accumulation. Based on intestinal and splenic transcriptome analysis, W₁ exposure upregulated the cytosolic DNA-sensing pathway, whereas polytungstate exposure downregulated the nucleotide-binding oligomerization domain-like and C-type lectin receptor signaling pathways. Polytungstate exposure also disturbed inflammatory factor expression, consistent with severe immunosuppression and inflammatory damage. These findings demonstrate that tungsten speciation regulates its uptake and accumulation, as well as the immunosuppression and inflammatory responses. Future tungsten toxicity assessment should rigorously account for its speciation.<h3>Environmental Implication</h3>Tungsten forms tungstate and many polytungstate complexes in environmental waters. Here, we systematically evaluated how this diverse speciation would impact the immunotoxicity of tungsten to aquatic organisms and potentially humans, using the zebrafish model. Short-term polytungstate exposure caused markedly higher mortality, greater bioaccumulation particularly in the immune organs, more striking histopathological abnormalities, and more severe immunosuppression and inflammatory damage than tungstate exposure. These results highlight the need to quantitatively assess tungsten speciation for a holistic understanding of the health impacts of tungsten exposure and will support the management and risk assessment of tungsten contamination in aquatic environments.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"38 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hidden risk of Microplastics in Milk Tea and Coffee: A Case Study from China's Freshly-Made Beverage Market","authors":"Hongbo Su, Ge Tang, Jianing Shen, Qi Liu, Wanlu Xu, Xin Qian, Yifan Fan","doi":"10.1016/j.jhazmat.2025.138799","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138799","url":null,"abstract":"Microplastics (MPs) have been widely detected in commercial food, and they may have negative impacts on human health. However, MPs-related risks require further exploration. This study focused on the freshly-made beverages in mainland China to explore MPs-related risks in milk tea and coffee. A total of 105 samples from 7 well-known brands were purchased via 3 different approaches (delivery, shopping malls and subway stations). MPs were detected in 93% of the samples, ranging from 0 to 43 particles·cup^-1, with an average of 9.6 ± 9.5 particles·cup^-1. There were significant differences in MP abundance among different brands, while the purchasing approaches had a negligible impact. Polyamide (PA), polyurethane (PU), and polyethylene terephthalate (PET) were the main polymer types, indicating that MPs mainly originated from the external environment. The characteristics of MPs in these beverages are similar to those found in the human stomach. Further estimation of annual MP intake from freshly-made milk tea and coffee revealed that the average intake of MPs by Chinese adults was 24.60 particles·yr^-1·kg^-1, and women intakes more than men. These findings fill a research gap on MP pollution in such beverages, and they are important for food safety.<h3>Environmental implications</h3>The freshly-made beverage industry, with its extensive use of single-use plastics for packaging and open-air preparation, contributes significantly to MP pollution. MPs can harm aquatic and terrestrial ecosystems, and the estimated annual intake of MPs by Chinese adults from such beverages raises human health concerns. Brands can mitigate this by using less plastic, improving production hygiene, and choosing MP-free methods. Regulatory intervention, like setting MP limits and curbing single-use plastics, is also crucial. Moreover, consumers can choose brands with sustainable practices, ultimately helping to reduce the environmental impact of MP pollution from this industry.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"32 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative analysis of microplastic and microbial communities in varied aquatic environments: Disparities in occurrence, interconnections, and ecological implications","authors":"Lingfang Fu, Yongxin Guo, Jialiang Tang, Mengdi Yang, Lu Huang, Jieer Xiao, Zhongya Fan, Zhongyang Wang, Jiangyu Zhi, Zhiwei Huang, Huaiyang Fang, Ping Li","doi":"10.1016/j.jhazmat.2025.138795","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138795","url":null,"abstract":"Detection of microplastics (MPs) in various water environments raises significant environmental concerns. However, comprehension of the differences in MPs and their linked biological communities across diverse water settings remain limited. This study explores MPs and their linked microbial communities in the Dongjiang River, Xingfengjiang Reservoirs, and Dayawan Bays watersheds. Our results revealed distinct community compositions of MPs in these three water environments, with higher abundance and diversity integrated index of MPs (<em>p</em> &lt; 0.01) observed in rivers and reservoirs compared to bays. Significant variations in dominant microbial communities and relative abundances were observed among these water bodies, with rivers showing higher Shannon and Simpson indexes than reservoirs and bays. The co-occurrence network analysis indicated complex and interconnected structures between bacterial communities and MPs in rivers and reservoirs than in bays. Risk assessments conducted for these water environments revealed varying levels of potential risks associated with MPs, with reservoirs posing a higher risk than rivers and bays. Noteworthy differences in pathogenic bacteria compositions were also identified across the water environments. This study highlights the disparities and connections between MPs and microbial communities in rivers, reservoirs, and bays, providing valuable insights for managing and mitigating MP pollution in diverse aquatic environments.<h3>Environmental Implication</h3>The research conducted on the physical and chemical properties of microplastics (MPs) and their associated microbial communities in diverse water environments in Guangdong, China, holds significant environmental implications. By systematically analyzing the abundance, shapes, sizes, polymer types of MPs, and the composition of microbial communities across the Dongjiang River, Xingfengjiang Reservoir, and Daya Bay, this study provides crucial insights for environmental management strategies. Understanding the differences in abundance, composition, and diversity of MPs and associated microbiomes in these distinct water bodies is essential for devising targeted interventions to address microplastic contamination and associated risks effectively. This research not only contributes to the body of knowledge regarding microplastic pollution in aquatic ecosystems but also lays the foundation for informed decision-making and sustainable management practices to safeguard water quality and ecosystem health in the region and beyond.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"35 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine Learning Models for Forecasting Microplastic Dynamics in China’s Coastal Waters","authors":"Jing Li, Zhoujia Jiang, Ling Shu, Xiangyu Li, Chuanxi Wang, Haibo Zhang","doi":"10.1016/j.jhazmat.2025.138797","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138797","url":null,"abstract":"Understanding spatial-temporal microplastic (MP) patterns and regional drivers in China's coastal waters is crucial for pollution interventions. Based on selection criteria, this study synthesizes 1,146 validated data from 49 peer-reviewed studies across China’s four major seas (Bohai, Yellow, East China, and South China Seas). MP abundance showed a spatial gradient, with marine exhibiting lower concentrations than estuary/bay and coastal areas. Association rules suggest urban centers and industrial activities as potential causes. Notable trends highlight the complexity of microplastics type, as polyethylene terephthalate and polypropylene dominate. Machine learning and SHAP analysis revealed nonlinear drivers of MP pollution and ecological risks. In marine areas, total phytoplankton primary production correlated with MPs, potentially through biofouling interactions, while surface CO₂ indirectly influenced distribution via carbon cycle dynamics. Coastal and estuary/bay areas showed MP abundance correlations with scientific-technological innovation and higher education institutions, whereas the ecological risk aligned with wastewater treatment ratios and lengthen of urban sewage pipes, suggesting higher ecotoxicity from industrial discharge MPs. Ensemble modeling projected MP trends under different scenarios: economic and education development reduced MP concentrations, while industrial expansion and technology innovation increased pollution. The Pearl River Delta Economic Zone exhibited the highest MP levels, with coastal and estuary/bay regions displaying divergent pollution responses to anthropogenic pressures. Policy recommendations include integrating environmental criteria into technological innovation, optimizing wastewater management, and leveraging education for sustainable production. This study provides actionable insights for safeguarding marine ecosystems amid industrialization.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"37 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144183926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The smoking of heat-not-burn (HNB) cigarette products and its effects on indoor air quality","authors":"Yong-Seong Lee, Dae-Hwan Lim, Hubdar Ali Maitlo, Ki-Hyun Kim","doi":"10.1016/j.jhazmat.2025.138790","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138790","url":null,"abstract":"In this research, the concentration levels of volatile organic compounds (VOCs) are monitored in a designated smoking booth using heat-not-burn (HNB) cigarettes (in reference to 1R6F cigarette) with controlled variables of number of cigarettes smoked (1, 3, and 6 cigarettes), booth ventilation (closed vs. open), and time after the release of cigarette smoke (T₀=0, T₁=5, T₂=10, and T₃=20<!-- --> <!-- -->minutes)). The total VOC concentration (TVOC) released from an HNB cigarette is compared as a collective group (TV_all) and as three individual subgroups (TV_n: TV₁ for 14 standardized VOCs (G₁), TV₂ for 17 reference VOCs (G₂), and TV₃ for 10 carbonyl compounds (CCs: G₃)). Comparative analysis of TVOC emission concentration levels is performed in closed/open booth conditions, with concentrations from HNB (1348/416 ppbC) about one order of magnitude lower than those from 1R6F (14833/3435 ppbC). Specifically, the predominant G₁/G₂/G₃ components for HNB are isoprene (14.2 ppb), dodecane (16.8 ppb), and acetaldehyde (17.6 ppb), respectively. The emission characteristics of HNB cigarettes are further evaluated in comparison to conventional cigarettes (i.e., 1R6F) and the VOC release of typical indoor activities, such as cooking, based on data from a complementary experiment conducted as part of this study. Overall, the results underscore the relative emission potential of different indoor sources, offering valuable insight into their comparative impact on indoor air quality.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"6 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144183916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel EDTA modified steel slag-based catalyst for NO removal through heterogeneous Fenton processes","authors":"Lingtao Liu, Yuan Xu, Zihua Hu, Jianying Yang, Zhuyao Li, Yuling Zhu, Jianhua Ding, Jiawei Li, Feiqiang He","doi":"10.1016/j.jhazmat.2025.138794","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138794","url":null,"abstract":"The limitation of monofunctional active sites has become a critical bottleneck in heterogeneous Fenton-based denitrification systems. For this purpose, in view of the structural characteristics of steel slag and the chemical properties of EDTA, EDTA was utilized to modify the steel slag to prepare catalyst EDTA-SA-SS with multi-functional active centers, which was catalyze H₂O₂ to oxidize and remove NO. The results demonstrated that catalyst EDTA-SA-SS exhibited the excellent catalytic efficiency with 91.6% and good stability on NO removal. The superior Fenton catalytic activity of the EDTA-SA-SS system arises from its integrated reaction mechanisms: (1) EDTA acts both electron-donating and electron-shuttling roles during Fenton reactions, leveraging its phenolic hydroxyl and carboxyl groups to facilitate Fe(III) reduction. EDTA can lower the redox potential of Fe(II)/Fe(III) as a result of the constructed C-O-Fe bonding. Therefore, by regulating the electronic structure of Fe through EDTA, the circulation of Fe(II)/Fe(III) can be enhanced, and hydroxyl radicals (•OH) can be continuously generated to promote the oxidation reaction of NO. (2) Concurrently, continuously regenerated Fe(II)EDTA complexes chelate NO, forming a synergistic oxidation-complexation removal pathway. Furthermore, NO removal performance and kinetic data by EDTA-SA-SS/H₂O₂ system with various operational settings were examined. This research introduces an eco-friendly and resource-efficient Fenton denitrification approach for flue gas treatment.<h3>Environmental implication</h3>This study presents a win-win strategy addressing critical environmental challenges in China: (1) Mitigation of hazardous NO emissions through a high-efficiency Fenton-like denitrification system achieving excellent NO removal; (2) Sustainable valorization of steel slag, an underutilized industrial byproduct with heavy metal leaching risks, converting it into value-added catalysts. This work provides a paradigm for designing waste-derived multifunctional catalysts that reconcile air pollution control with hazardous solid waste management - a crucial advancement for developing nations facing coupled atmospheric and industrial pollution crises.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"37 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metabolic dysregulation and temporal dynamics of NF-κB-p65/NLRP3, TXNIP, endoplasmic reticulum and mitochondrial stress in silica-induced pulmonary fibrosis in rats","authors":"Kaveri R. Washimkar, Chirag Kulkarni, Manendra Singh Tomar, Shobhit Verma, Divya Bhatt, Smriti Verma, D.V. Siva Reddy, Biasakhi Moharana, Amit Misra, Dnyaneshwar U. Bawankule, Srikanta Kumar Rath, Naibedya Chattopadhyay, Ashutosh Shrivastava, Madhav Nilakanth Mugale","doi":"10.1016/j.jhazmat.2025.138791","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138791","url":null,"abstract":"Silica(SiO₂)-induced pulmonary fibrosis(PF), a global occupational illness, is characterized by lung dysfunction, inflammation, and extracellular matrix(ECM) deposition. SiO₂ generates PF via several complicated processes, but how they interact in PF initiation and progression is poorly studied. Here, male Sprague-Dawley rats were used to develop PF model by oropharyngeal instillation of SiO₂(50<!-- --> <!-- -->mg/ml/rat). Control rats were administered with saline. Rats from control and SiO₂ induced groups were sacrificed on 7^th, 14^th, 21^st, and 28^th day post-SiO₂ exposure and examined the role of inflammatory, oxidative, endoplasmic reticulum(ER), and mitochondrial stress pathways in PF formation and progression longitudinally. Additionally, metabolomics analysis was conducted to unravel the metabolic anomalies related to PF progression. SiO₂ exposure caused histopathological and lung function alterations and increased collagen deposition longitudinally. Further, SiO₂ upregulated M2 macrophages and fibroblasts, and downregulated alveolar type II cells. Additionally, it caused a gradual upregulation in nuclear factor-κB-p65/NOD-like receptor protein 3-induced inflammation and pro-inflammatory cytokines over time. Further evaluation showed that SiO₂ caused oxidative stress by reducing antioxidants, increasing hypoxia-inducible factor 1-alpha and thioredoxin-interacting proteins, and upregulated apoptosis. SiO₂ exposure confirmed gradual EMT and PF progression via TGF-β1/Smad and Nrf2 signaling. Our investigation also demonstrated the involvement of a time-dependent increase in ER and mitochondrial stress in PF. Metabolomics analysis revealed a significant association between metabolic alterations and PF progression. Eight pathways were observed to change consistently across all time points in lung tissues. Proline emerged as the sole consistently altered metabolite across all time points in BALF. Wherease, 17 pathways were altered in time-dependent manner among them, 15 were downregulated and 2 were upregulated in the advanced stage of PF. Collectively, this work elucidates the underlying signaling and metabolic pathways associated with PF pathogenesis.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"7 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic triboelectric and antibacterial properties in biodegradable nanofiber membranes for air filtration","authors":"Yi Liu ,&nbsp;Shuai Zheng ,&nbsp;Mengqi Wang ,&nbsp;Xiaoyu Zhang ,&nbsp;Fei Wang ,&nbsp;Jun Yu ,&nbsp;Xiaodong Hu ,&nbsp;Jinyou Lin ,&nbsp;Yuqing Liu","doi":"10.1016/j.jhazmat.2025.138793","DOIUrl":"10.1016/j.jhazmat.2025.138793","url":null,"abstract":"<div><div>Masking materials efficiently filter airborne particles, particularly reducing the risk of viral and bacterial infections through electrostatic adsorption. However, prolonged exposure to breathing steam gradually lowers filtration efficiency due to moisture absorption. Previous studies investigated strategies like electret materials and multilayer structures to enhance lifespan. Yet, high-humidity environments accelerate charge decay in electret materials while increasing resistance in multilayer systems, impairing comfort. Additionally, enclosed spaces within masks promote bacterial growth, prompting the development of antibacterial mask designs. In this study, we developed a triboelectric PLA/C/M (PLA/CTAB/MXene fiber filter membrane) to achieve long-lasting efficient filtration with antibacterial properties. MXene nanosheets improved triboelectric performance, yielding an open-circuit voltage of 21 V, short-circuit current of 40 nA, and transferred charge of 6 nC. The optimized sample (PLA/C/M₅) exhibited excellent filtration performance, achieving 99.99 % efficiency with a 21.4 Pa pressure drop (QF: 0.49 Pa⁻¹). cetyltrimethylammonium bromide (CTAB) and MXene significantly enhanced antibacterial performance, achieving a 99 % antibacterial rate. The PLA/C/M composite exhibits high filtration efficiency, low resistance, excellent triboelectric properties, and outstanding antibacterial capability, making it highly promising for energy harvesting and high-performance air filtration material development.</div></div>","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"495 ","pages":"Article 138793"},"PeriodicalIF":12.2,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interfacial engineering of Bi3.64Mo0.36O6.55/Ti3C2 Schottky junctions based on work function for efficient photoexcitation-assisted degradation of antibiotics","authors":"Jiawei Liu, Jia Liu, Zhilin Zhang, Junhao Lin, ZiZhen Wu, Qingyang Jiang, Sicheng Gong, Jun Shi, Huiping Deng","doi":"10.1016/j.jhazmat.2025.138801","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138801","url":null,"abstract":"The efficient removal of tetracycline (TC) while minimizing the formation of toxic intermediates remains a significant challenge. In this study, an interfacial Schottky junction of Bi_3.64Mo_0.36O_6.55/Ti₃C₂(BMT) was designed, generated by the contact potential difference between Ti₃C₂ and Bi_3.64Mo_0.36O_6.55 (BMO). The induction of work function and Fermi energy level was observed to generate a localized electrophilic/nucleophilic region that promotes the formation of free radicals. Self-driven charge transfer across the interface was found to increase the localized electron density on Ti₃C₂, while the formation of Schottky barriers was observed to inhibit electron return and facilitate charge transfer and separation. The photocatalytic activity of BMT-5 under visible and near-infrared light radiation was significantly enhanced, resulting in an increased free radical content, which was identified using the probe method. With the assistance of LSPR and oxygen vacancies, BMT-5 achieved a removal efficiency of 99% for tetracycline within 15<!-- --> <!-- -->minutes, with a substantial reduction in the toxicity of the resulting intermediates. This study offers an innovative strategy for constructing electronic bridges in Schottky photocatalysts to enhance photocatalytic activity.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"5 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144183965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Visible-Light-Driven Synergistic Photocatalysis-Microbial Metabolism by Chlorella ellipsoidea@TiO2-Ag-AgCl Nano-Biohybrid: Enhanced o-Cresol Biodegradation and Mechanistic Insights","authors":"Daohong Zhang, Haiyan Yang, Xiaoman Guo, Zhihua Liu, Yi Han, Yanan Hou, Haibo Li, Yufei Wang, Chaocan Li","doi":"10.1016/j.jhazmat.2025.138771","DOIUrl":"https://doi.org/10.1016/j.jhazmat.2025.138771","url":null,"abstract":"Microalgae-based bioremediation offers an eco-friendly approach for water purification, yet its practical implementation is hindered by low degradation efficiency and poor toxin tolerance. Here, we propose a visible-light-driven nano-biohybrid strategy by integrating <em>Chlorella ellipsoidea</em> with TiO₂-Ag-AgCl photocatalysts to overcome these limitations. The constructed <em>C. ellipsoidea</em>@TiO₂-Ag-AgCl system achieved a remarkable <em>o</em>-cresol biodegradation rate of 5.56<!-- --> <!-- -->mg/(L·h), representing a 6.49- and 3.66-fold enhancement over native microalgae and catalyst alone, and surpassing TiO₂-modified systems (3.57<!-- --> <!-- -->mg/(L·h)). Mechanistic investigations revealed that the Ag-AgCl dopants not only narrowed the bandgap (1.96<!-- --> <!-- -->eV vs. 3.16<!-- --> <!-- -->eV for TiO₂) but also synergistically augmented electron transfer pathways, as evidenced by 378% higher riboflavin secretion and 77.3% elevated NADH and ETSA (compared to native microalgae). Furthermore, the nano-biohybrids enhanced microbial metabolic activity through ATP synthesis (20.7% increase), EPS production (6.53×polysaccharides and 3.01×protein), and detoxification enzymes (e.g., 37.0% CAT elevation) after <em>o</em>-cresol biodegradation reaction. Combined with LC-MS and free radical trapping results, the acceleration mechanism has been deciphered: (1) photocatalytic ROS generation (•OH/O₂⁻) initiates <em>o</em>-cresol hydroxylation; (2) enhanced extracellular and intracellular electron transfer promotes microalgae-mediated TCA cycle mineralization of intermediates; and (3) NPs stimulated EPS secretion and detoxify toxins, enhancing microalgae’s adaptation to toxic environment. This work establishes a paradigm for solar-driven pollutant recycling through rational bio-nano integration, bridging photocatalysis and microbial metabolism for sustainable water remediation.","PeriodicalId":361,"journal":{"name":"Journal of Hazardous Materials","volume":"29 1","pages":""},"PeriodicalIF":13.6,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}