Environmental Research最新文献

{"title":"Association between objectively assessed physical activity and kidney function among female agricultural workers in hot environments in Spain.","authors":"Sarah Koch, Joren Buekers, Ana Espinosa, Juan Gómez-Salgado, Gabriel Pombo, Loes Werkman, Lourdes Arjona, Ali Al Rashed, Ben Caplin, Manolis Kogevinas, Francisco Brocal Fernandez, Amin Oomatia, Neil Pearce, Oriana Ramirez-Rubio, Carlos Ruíz-Frutos, Judith Garcia-Aymerich, Cristina O'Callaghan-Gordo","doi":"10.1016/j.envres.2025.121420","DOIUrl":"https://doi.org/10.1016/j.envres.2025.121420","url":null,"abstract":"<p><strong>Background: </strong>Physical activity in hot environments has been associated with impaired kidney function. We aimed to quantify the association between occupational physical activity and kidney function over one work shift in female agricultural workers exposed to environmental heat.</p><p><strong>Methods: </strong>We measured occupational physical activity in female berry pickers in Huelva, Spain, using movement intensity, based on vector magnitude units (VMU), and heart rate (HR). For both, we calculated the mean (VMU_mean;HR_mean), standard deviation (VMU_sd; HR_sd), and 3-minute 95^th percentile (VMU_p95;HR_p95). Environmental heat in greenhouses was estimated using wet bulb globe temperature (WBGT). Kidney function and injury were quantified using pre- and post-shift differences in serum creatinine (SCr_dif), Cystatin C (Cystatin C_dif) and neutrophil gelatinase associated lipocalin (NGAL_dif), respectively. Acute Kidney Injury (AKI) was defined as an increase in post-shift serum creatinine of ≥0.3mg/dl, or ≥1.5 times pre-shift levels. Heat strain was estimated using the ISO 7933:2004 index. We used linear and logistic regressions.</p><p><strong>Results: </strong>Ninety women aged 37.4 ± 5.7 years were exposed to a mean WBGT of 25.2 (±3.6)°C and light intensity physical activity (HR_mean of 94 (±9)bpm). Of those, 26% experienced heat strain, 68% were dehydrated, and 7% presented with AKI at the end of the shift. Higher VMU_sd was associated with higher Scr_dif (β:0.029 (95% CI: 0.00; 0.058) and meeting the threshold for AKI (OR:1.6 (95% CI:0.8; 3.2)), We observed higher NGAL_dif with higher VMU_mean (β:1.944 (95% CI: 0.139;3.748)) per 100 VMU_mean increase. The positive association between HR_mean and SCr_dif was stronger among women with heat strain (interaction p = 0.033).</p><p><strong>Conclusions and relevance: </strong>In female harvest workers, high means and variations in VMU over a single one shift worked under hot conditions were associated with kidney injury, as assessed by urinary biomarkers, though there is limited evidence for any change in kidney function. Precautiously, large changes in physical activity intensity over one work shift should be avoided to protect from renal injury.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"121420"},"PeriodicalIF":7.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Mediation role of gut microbiota in the association between ambient fine particulate matter components and cardiovascular disease: Evidence from a China cohort","authors":"Shaokun Yang ,&nbsp;Rui Yu ,&nbsp;Fen Yang ,&nbsp;Jiawei Li ,&nbsp;Lele Wang ,&nbsp;Gonghua Wu ,&nbsp;Liling Chen ,&nbsp;Tingting Yang ,&nbsp;Zhuoma Duoji ,&nbsp;Yanjiao Wang ,&nbsp;Xufang Gao ,&nbsp;Yuanyuan Liu ,&nbsp;China Multi-Ethnic Cohort (CMEC) collaborative group","doi":"10.1016/j.envres.2025.121421","DOIUrl":"10.1016/j.envres.2025.121421","url":null,"abstract":"<div><h3>Background</h3><div>Pairwise associations among fine particulate matter (PM_2.5), gut microbiota, and cardiovascular disease (CVD) have been established. However, the mediating role of gut microbiota in the relationship between PM_2.5 and its components and CVD remains unclear.</div></div><div><h3>Methods</h3><div>We included 1459 participants from the China Multi-Ethnic Cohort between May 2018 and September 2019. CVD was identified using ICD-10 codes based on hospital surveillance system. PM_2.5 and its components were sourced from the ChinaHighAirPollutants dataset. Gut microbiota was obtained from 16S rRNA sequencing of stool samples, and five α-indexes along with 1088 gut compositions were used as mediators. Cox proportional hazards and multiple linear regression were used to explore the associations among PM_2.5 and its components, gut microbiota, and CVD. Causal mediation analysis was conducted to evaluate the potential mediating role of gut microbiota between PM_2.5 and its components and CVD.</div></div><div><h3>Results</h3><div>Among all the participants, 204 (14.0 %) had developed CVD during a 5501 person‐year follow‐up (median, 3.8 years). The ACE, Chao1, and Obs indexes positively mediated the associations of PM_2.5 and its components with both CVD and stroke, with mediation proportions ranging from 7.9 % to 8.9 % for CVD and 10.0 %–12.1 % for stroke. The ACE index had the highest mediation proportion (12.1 %) in the relationship between sulfate and stroke. The genus Pasteurella also demonstrated a mediating role, accounting for 2.6 %–3.2 % for CVD, and 2.5 %–3.6 % for stroke, exhibiting the highest mediation proportion (3.6 %) on the association between black carbon or nitrate and stroke.</div></div><div><h3>Conclusion</h3><div>Three α-indexes (ACE, Chao1, and Obs) and the Pasteurella positively mediated the association between PM_2.5 and its components and CVD risk. Enhancing the richness of gut microbiota could potentially reduce the risk of CVD induced by PM_2.5 and its components.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"275 ","pages":"Article 121421"},"PeriodicalIF":7.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Soil pH and total phosphorus regulate bacterial community assembly in slope restoration areas of the Tibetan Plateau's metal mining areas","authors":"Huanyu Zhou ,&nbsp;Xiaotong Liu ,&nbsp;Xianlei Gao ,&nbsp;Yan Wang ,&nbsp;Lanlan Ye ,&nbsp;Junxi Wu ,&nbsp;Mingxue Xiang","doi":"10.1016/j.envres.2025.121432","DOIUrl":"10.1016/j.envres.2025.121432","url":null,"abstract":"<div><div>Microbial community development is a crucial aspect of soil restoration. The employment of frame beams in conjunction with external soil has demonstrated efficacy in the rehabilitation of degraded roadside ecosystems within mining regions. Nonetheless, the effects of frame beams on the composition and stability of soil bacterial communities remain inadequately comprehended. We conducted a one-time soil sampling on a three-year restored slope in a large–scale metal mining area on the Tibetan Plateau, providing a snapshot of the current conditions and evaluating the restoration progress. Frame beams with external soil covers were applied at three different altitudes: A1 (4800–5000 m), A2 (4500–4700 m), and A3 (4200–4400 m). Restoration significantly altered bacterial community composition compared with controls. <em>Proteobacteria</em> had a higher relative abundance in the restoration area (average: 31.16 %), whereas <em>Acidobacteriota</em> were more abundant in the control area (average: 24.68 %). In the restoration area, soil bacterial α–diversity increased as elevation decreased, with the Shannon index rising from 5.34 (A1) to 5.82 (A3), suggesting that bacterial communities at higher altitudes are more sensitive to environmental conditions. Species turnover was the primary driving factor of β–diversity, accounting for 96.26 % under A1, 94.71 % under A2, and 91.94 % under A3, respectively. The nearest taxon index of bacterial communities shifted from negative to positive along the elevation gradient (−0.25 to 1.14), indicating an increasing trend toward community clustering. Within the bacterial co-occurrence network, soil pH and total phosphorus contribute significantly to network strength, closeness, and betweenness. Concluding, soil pH and total phosphorus were identified as key factors shaping bacterial diversity and assembly mechanisms. Our research contributes to the development of effective soil restoration strategies for alpine mining regions, providing insights into microbial community assembly and stability mechanisms.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"275 ","pages":"Article 121432"},"PeriodicalIF":7.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ce-modified NH2-MIL-88B enhances catalytic ozonation for effective antibiotic degradation","authors":"Ying Yang,&nbsp;Shengwen Zhou,&nbsp;Yaoru Mao,&nbsp;Yuerong Zhou,&nbsp;Xiuwen Cheng","doi":"10.1016/j.envres.2025.121388","DOIUrl":"10.1016/j.envres.2025.121388","url":null,"abstract":"<div><div>A Ce-doped NH<strong>₂</strong>-MIL-88B(Fe) composite (Ce-NM8B) was synthesized via a hydrothermal method and used to catalyze ozone oxidation to degrade levofloxacin (LEF) in water. Moreover, comprehensive characterization of Ce-NM8B, including crystal structure, surface morphology, and electrochemical properties, was performed using XRD, SEM, BET, XPS, FT-IR, and ICP techniques. As a result, the Ce-NM8B/O₃ system achieved an 84.2 % degradation of 10 mg/L LEF within 40 min under optimal conditions (0.20 g/L catalyst dosage, 0.20 L/min ozone flow, pH 7). Furthermore, EPR and radical quenching experiments confirmed the generation of ·OH, O₂·^-, and ¹O₂ species, in addition to direct ozone oxidation and catalytic adsorption. Additionally, HPLC-MS analysis identified key degradation pathways, including piperazine, quinolone, and morpholine ring cleavage, alongside decarboxylation, defluorination, and demethylation. In terms of toxicity, evaluation using T.E.S.T. revealed that intermediate products exhibited reduced toxicity. Moreover, Ce-NM8B demonstrated stable performance over three cycles. Finally, the system's applicability and practical potential were confirmed through the degradation of several antibiotics and testing in natural water substrates.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"275 ","pages":"Article 121388"},"PeriodicalIF":7.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 photocatalytic oxygen activation by oxygen vacancies-rich BiOI for enhanced removal of bisphenol A in water","authors":"Hailong Tong ,&nbsp;Jinna Zhang ,&nbsp;Baiming Sun ,&nbsp;Han Shi ,&nbsp;Nanqi Ren ,&nbsp;Shijie You ,&nbsp;Guangshan Zhang","doi":"10.1016/j.envres.2025.121412","DOIUrl":"10.1016/j.envres.2025.121412","url":null,"abstract":"<div><div>Bisphenol A (BPA) is a persistent endocrine disruptor that poses high ecological and healthy risks. Photocatalytic oxygen (O₂) activation has emerged as a promising technology for water decontamination, but its efficiency is often hindered by sluggish interfacial electron transfer between photocatalysts and O₂ molecules. In this study, a Zn/S co-doping defect engineering strategy was developed to introduce oxygen vacancies (OVs) into BiOI for enhancing visible-light photocatalytic O₂ activation and BPA removal. The OVs-rich BiOI with sub-band near the conduction band provided electron and reactant trapping sites that facilitated spatial separation of photogenerated electrons (e⁻) and holes (h⁺). The localized electrons at OVs reduced O₂ via single-electron transfer to generate superoxide radicals (•O₂⁻), which were further oxidized to singlet oxygen (¹O₂) by h⁺. Synergistic oxidation of ¹O₂ and h⁺ significantly enhanced BPA degradation, achieving approximately 90 % removal within 120 min. The reaction rate constant (0.01829 min⁻¹) was nearly double that of pure BiOI (0.00948 min⁻¹). Furthermore, the OVs-rich BiOI catalyst demonstrated excellent stability and reusability, maintaining &gt;90 % BPA removal efficiency after five cycles of test. This study offers a new strategy for developing visible-light photocatalyst to remove recalcitrant emerging organic contaminants in water.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"275 ","pages":"Article 121412"},"PeriodicalIF":7.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Distinct patterns and processes of eukaryotic phytoplankton communities along a steep elevational gradient in highland rivers","authors":"Haotian Wang ,&nbsp;Zhigang Wu ,&nbsp;Aiwen Zhao ,&nbsp;Youxin Wang ,&nbsp;Qi Li ,&nbsp;Lin Zhang ,&nbsp;Zhong Wang ,&nbsp;Tao Li ,&nbsp;Jindong Zhao","doi":"10.1016/j.envres.2025.121427","DOIUrl":"10.1016/j.envres.2025.121427","url":null,"abstract":"<div><div>Phytoplankton play a crucial role in biogeochemical cycling and aquatic food webs while also susceptible to environmental variations. However, their response to altitude gradients remains poorly understood. In this study, we applied a metabarcoding approach to explore eukaryotic phytoplankton community structure, co-occurrence networks, and assembly processes along a steep altitudinal gradient (590-4500 m) in the Nyang River and the lower reaches of the Yarlung Zangbo River on the Qinghai-Tibetan Plateau during dry and wet seasons. Using 18S rDNA sequencing, we obtained 2852 amplicon sequence variants. Our results demonstrated that Ochrophyta was the dominant taxon in the eukaryotic phytoplankton community across both seasons. Alpha diversity exhibited distinct seasonal patterns, decreasing monotonically with increasing altitude in the dry season whereas the highest diversity was observed at medium altitudes in the wet season. Phytoplankton co-occurrence networks became more topologically complex as species diversity increased. Among environmental factors, altitude (r = 0.62), water temperature (r = 0.52) and pH (r = 0.51) significantly influenced phytoplankton communities. Stochastic processes globally dominated phytoplankton community assembly (66 %) and became increasingly influential from dry season (51 %) to wet season (71 %). Their impact gradually increased from low altitude (57 %) to medium altitude (64 %), but deterministic processes overwhelming dominated community assembly at the higher altitude in both seasons (dry season: 95 %, wet season 71 %). In summary, these findings enhance our understanding of the spatial and temporal dynamics of eukaryotic phytoplankton communities in highland rivers and the maintenance of planktonic diversity along elevational gradients.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"275 ","pages":"Article 121427"},"PeriodicalIF":7.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Accounting for exact vegetation index recording date to enhance evaluation of time-lagged and accumulated climatic effects on global vegetation greenness","authors":"Lan Zhang,&nbsp;Xiangping Hu,&nbsp;Francesco Cherubini","doi":"10.1016/j.envres.2025.121398","DOIUrl":"10.1016/j.envres.2025.121398","url":null,"abstract":"<div><div>Considering time-lag and accumulation effects of climate is crucial for accurately evaluating vegetation dynamics under global climate change. Most studies investigate these mechanisms by examining the explanatory power of the overall climatic conditions of the same month of the day at which the vegetation index is recorded, or the preceding month(s). This approach, referred to as monthly climate approach, risks underestimating the importance of within-month vegetation index variations. This study introduces an alternative approach, the EVI-date climate approach, which considers climate data from a specified time period up to the EVI recording day. The explanatory power is investigated for temperature, precipitation, and solar radiation at a global scale. EVI-date climate generally shows stronger vegetation-climate relationships than monthly climate. The relative improvement in adjusted R² ranges from 2.86 % to 39.3 %, and it is especially significant at northern high latitude when the EVI typically varies greatly (May, June, September). Using EVI-date climate, the highest explanatory power for vegetation greenness is generally found with the overall conditions over the 30 or 60 days preceding EVI recording date for temperature and solar radiation, and the preceding 60–120 days for precipitation. Overall, using the optimal time spans of climatic conditions preceding EVI recording date improves the explanatory power by 16.3 %–22.3 % compared to the use of the preceding 30-days climate only. By better aligning climate variables with vegetation greenness, climate-vegetation interaction predictions can be improved, enhancing our insights into ecosystem changes driven by climate shifts and human impact.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"275 ","pages":"Article 121398"},"PeriodicalIF":7.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143661877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shaddock peels biochar doping with Fe-Co bimetal for peroxymonosulfate activation on the degradation of tetracycline: The influence of HCO3− and PO43−","authors":"Haochen Li ,&nbsp;Jiahui Wu ,&nbsp;Ao Ren ,&nbsp;Yao Qu ,&nbsp;Xiaofei Zong ,&nbsp;Yaoyao Gong ,&nbsp;Dandan Wang ,&nbsp;Yuxuan Ye ,&nbsp;Qiang Li ,&nbsp;Zhenbin Wu ,&nbsp;Fei Pan","doi":"10.1016/j.envres.2025.121411","DOIUrl":"10.1016/j.envres.2025.121411","url":null,"abstract":"<div><div>To reduce the negative impact of antibiotics on the water environment, shaddock peels biochar co-doped with iron and cobalt (Fe-Co@SPC) was employed in the peroxymonosulfate (PMS) system to eliminate tetracycline (TC). The obtained Fe-Co@SPC could efficiently activate PMS and degrade 95.6 % of TC within 1 h at pH 9.06. Notably, the presence of HCO₃⁻ promoted PMS activation, which was mainly because the weakly alkaline system inhibited metal ion leaching. PO₄³⁻ invaded the surface active sites on the Fe-Co@SPC and formed O-P/C-PO₃, which inhibited PMS activation. The scavenging and EPR analysis results demonstrated SO₄^•−, •OH, ¹O₂ and O₂^•− were the major ROS. Besides, the C=O functional group and Fe-Co bimetal on Fe-Co@SPC accelerated the electronic transfer. Three reaction pathways were proposed in the Fe-Co@SPC/PMS system and the potential ecotoxicity of the intermediates was significantly declined. Based on the reusability and stability, Fe-Co@SPC could efficiently activate PMS to degrade organic pollutants in water bodies.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"275 ","pages":"Article 121411"},"PeriodicalIF":7.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Effective photocatalytic chromium (VI) detoxification with metal-free heterojunction based on g-C3N5 and ZIF-8 carbon under visible light","authors":"María Esperanza Román-Abarca ,&nbsp;Tathagata Kar ,&nbsp;Maura Casales-Díaz ,&nbsp;José Juan Ramos-Hernández ,&nbsp;Srinivas Godavarthi ,&nbsp;Naveen Kumar Reddy Bogireddy ,&nbsp;Hugo Albeiro Saldarriaga Noreña ,&nbsp;Mohan Kumar Kesarla","doi":"10.1016/j.envres.2025.121424","DOIUrl":"10.1016/j.envres.2025.121424","url":null,"abstract":"<div><div>A metal-free heterojunction (CNZ8C) photocatalyst prepared using g-C₃N₅ (CN) and zeolitic imidazolate framework (ZIF)-derived carbon (Z8C) is reported for sequential reduction and elimination of toxic Cr (VI) from water. Recombination of photogenerated charge carriers in CN was evicted completely through heterojunction formation of CN with Z8C. This is evidenced from the transient photocurrent responses (TPR), photoluminescence (PL) measurements and electrochemical impedance spectroscopy (EIS). The band structure analysis from the valence band X-ray spectroscopy and diffused reflectance spectroscopy revealed that the synergy in the synthesized CN-Z8C heterojunction is responsible for the reduction of CN band gap. The experimental results obtained confirm that the positions of the valence and conduction bands are aligned to more negative values facilitating the Cr (VI) reduction. Incorporation of the highly conducting porous CZ8 to CN improves the charge separation and also brings the Cr (VI) ions close to CZ8 surface <em>via</em> adsorption, which together favors the overall reduction and removal of reduced ions. The rate of reduction/removal significantly increased with CNZ8C 5:5 (with nearly 100 % removal efficiency) heterojunction compared to that of CN. This heterojunction can be reutilized up to 5 cycles without any significant loss in efficiency. Mechanistic studies revealed that proper bandgap engineering leads to increased reduction and removal of chromium. The post treatment X-ray photoelectrons spectroscopy of the heterojunction confirms the +3 state of chromium. These observations suggest that the successful synergy between the CN and Z8C will bring new insights into chromium remediation.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"275 ","pages":"Article 121424"},"PeriodicalIF":7.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143661879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nitrogen-rich carbon nitride activated peroxymonosulfate for the efficient photodegradation of 2, 4-dichlorophenol: Performance and mechanism insight","authors":"Tianyu Zhou ,&nbsp;Siyi Wang ,&nbsp;Meng Tai ,&nbsp;Juan Du ,&nbsp;Dongshu Sun ,&nbsp;Guangbo Che ,&nbsp;Linlin Liu ,&nbsp;Chunhong Ma ,&nbsp;Bo Hu","doi":"10.1016/j.envres.2025.121406","DOIUrl":"10.1016/j.envres.2025.121406","url":null,"abstract":"<div><div>Photocatalysis technology combined with advanced oxidation processes based on peroxymonosulfate (PMS) activation reveals great potential to degrade refractory pollutants with environmental-friendly and cost-competitive manners. Graphitic carbon nitride (CN) is regarded as a promising visible-light-driven meta-free catalyst due to its inherent advantages, e.g., cost-effective preparation, facile synthesis method and tunable band gap, while its photocatalytic performance is significantly limited by some critical scientific challenges such as high carrier recombination rate, limited exposure of active sites, and inadequate absorption of visible light. To solve the above key scientific problems, herein, 3, 5-diamino-1, 2, 4-triazole was adopted as nitrogen-rich precursor to prepare a nitrogen-rich porous ultra-thin CN photocatalyst via a simple “one-pot” calcination method. The optimal sample ZCN-30 exhibits superior hydrophilicity and stability, as well as higher contact potential disparity (34.6 mV) in contrast to that of CN (8.1 mV). By visible light coupled PMS activation, 10 mg of ZCN-30 can degrade 96.8 % of 2, 4-dichlorophenol in water within 100 min. The corresponding degradation rate constant are 10.9 and 5.3 times those of CN and ZCN-30 free of PMS. The significant performance improvement comes from specific surface area increasing from 96.75 m² g⁻¹ to 45.03 m² g⁻¹, greatly broadened light absorption, and significantly improved charge behavior. The degradation mechanism was clarified combining radicals capture, ESR, LC-MS and DFT calculation. This research supplies a new reference for simple, low cost, greatly improving the photocatalytic performance of CN, and offers an efficient and environmental-friendly scheme for the removal of refractory pollutants in water.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"275 ","pages":"Article 121406"},"PeriodicalIF":7.7,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}