Environmental Science: Nano最新文献

{"title":"Ternary coupled photothermal-assisted photocatalysis and peroxymonosulfate (PMS) oxidation system for enhanced sulfamethoxazole degradation","authors":"Xinwei Tang,Lingjue Wu,Zhi Zhang,Kailian Zhang,Kai Yang,Kangqiang Lu,Weiya Huang","doi":"10.1039/d6en00457a","DOIUrl":"https://doi.org/10.1039/d6en00457a","url":null,"abstract":"Antibiotic residues persisting in environmental matrices pose significant ecological and public health risks, underscoring the imperative to develop efficient, sustainable, and scalable degradation technologies. Herein, we synthesized cobalt oxides doped with cerium (Ce-Co3O4) as efficient catalysts to design ternary coupled photothermal, photocatalysis, and peroxymonosulfate (PMS) activation systems for enhanced sulfamethoxazole (SMX) degradation under both visible and near-infrared (NIR) light irradiation. The optimal catalyst, 1% Ce-Co3O4, achieved 95.6% SMX removal within 15 min under visible light and a PMS dosage of 600 mg L−1, with a degradation rate 2.97 times higher than that of pristine Co3O4; and attained 95.8% removal within 30 min under NIR light irradiation. The doping of Ce causes lattice strain, induces a mid-gap level, and narrows the bandgap from 1.60 eV to 1.46 eV, thereby extending optical absorption into the NIR region. The enhanced NIR absorption enables a localized photothermal effect that synergistically boosts PMS activation, leading to the enhanced SMX degradation efficiency. The Ce doping markedly suppresses charge recombination and accelerates electron transfer kinetics. The quenching experiments show that 1O2 and ·O2− are the predominant reactive species. The system exhibited good applicability to various organic pollutants, with the SMX removal efficiency remaining above 85% in real water matrices. In addition, the total organic carbon (TOC) removal reached 68%, and metal leaching remained at a very low level. Toxicity prediction, together with plant growth bioassays, collectively confirmed that the degradation process significantly reduced the ecological toxicity. This study proposes the development of a ternary coupled system that combines photothermal-assisted photocatalysis with persulfate oxidation to enhance the removal of antibiotics.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"10 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148853463","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":"Weathering Pathways of PET Consumer Products under Simulated Marine and Photochemical Conditions †","authors":"Akhila Rahul,Xiurong Chen,Charlie Maslen,Radwa Saad,Juliane Simmchen,Mathew E Berry","doi":"10.1039/d6en00683c","DOIUrl":"https://doi.org/10.1039/d6en00683c","url":null,"abstract":"Poly(ethylene terephthalate) (PET) is among the most widely used plastics globally, and its envi- ronmental persistence is strongly influenced by formulation variability and additive content. These factors complicate the identification and characterisation of PET degradation in natural environ- ments, highlighting the need for consistent and robust analytical approaches. The objective of this study was to compare the weathering behaviour of reference PET microplastics and PET mi- croparticles derived from commonly used consumer products following ultraviolet (UV) irradiation and artificial seawater ageing, and to evaluate analytical methods for characterising the resulting changes. Reference PET microplastics along with PET microparticles derived from commonly used consumer products, including beverage bottles, personal care product containers, and takeaway food packaging, were cryogenically milled and characterised before and after ageing. The materials were subjected separately to ultraviolet (UV) irradiation and artificial seawater ageing to simulate en- vironmental weathering in marine conditions. Chemical, structural, and optical changes induced by ageing were investigated using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and diffuse reflectance UV–visible spectroscopy (DRS/UV–Vis). In addition, fragmentation behaviour and degradation pathways under UV and seawater exposure were examined through optical microscopy coupled with image analysis. This work provides comparative insights into the weathering behaviour of PET consumer products and contributes to improved methodologies for assessing PET degradation in marine environments.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"32 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148853678","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":"Nanostructured Hafnium-Copper Hexachloride -Graphene Oxide Sensor for Environmental Detection of the Organophosphate Pesticide Methyl Parathion","authors":"Sirisha Subbareddy,Srujan Basavapura Ravikumar,Sahana Kamanna Metry,Suparna Kallakkattil,Nanjunda Swamy Shanthappa,Sandeep Shadakshari,Santhosh Arehalli Shivamurthy","doi":"10.1039/d6en00499g","DOIUrl":"https://doi.org/10.1039/d6en00499g","url":null,"abstract":"Methyl parathion (MP), an extensively used organophosphate pesticide, has posed significant environmental risks and threats to public health due to its toxic and persistent nature. This has led to an urgent need to develop functional materials that can potentially monitor the MP residues in food, soil and water. In this study, a hybrid electrochemical sensor, hafnium-copper hexachloride (HCC) integrated with graphene oxide (GoX), is proposed for the electrochemical detection of MP. The HCC provides multiple active sites for the redox reaction, whereas the GoX provides mechanical stability, thereby promoting the electrochemical performance of the HCC@GoX sensor. The material is synthesised through a solvothermal route and extensively characterised for its structural, electronic and electrochemical properties. All the electrochemical measurements are evaluated using cyclic and linear sweep voltammetry. The sensor has showcased a sensitivity of 7.0 × 10⁻⁷ A/nM/cm² with a limit of detection (LOD) 10.53 nM, and a limit of quantification (LOQ) of 35.1 nM. The redox mechanism of the target analyte is thoroughly analysed using additional computational methods including DFT studies. The reliability and selectivity of the sensor is further tested in real world samples – agricultural wastewater and soil samples, which have also confirmed the efficiency of the HCC@GoX sensor towards the electrochemical detection of MP. This clearly demonstrates that a combination of hafnium-copper halide with carbon nanostructures can present a sustainable alternative to the expensive noble-metal electrodes.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"10 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148853679","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":"Synthesis and performance study of dual-template ion-imprinted polymers based on MOFs","authors":"Bin Hu,Ganbin Luo,Yuzhe Yang,Mingjie Ma,Huiling Cheng","doi":"10.1039/d6en00271d","DOIUrl":"https://doi.org/10.1039/d6en00271d","url":null,"abstract":"In this study, dual-template ion-imprinted polymers (DIIPs) were successfully fabricated via the surface imprinting technique, using MIL-101(Cr, Mg) as the support material, methacrylic acid as the functional monomer, and ethylene glycol dimethacrylate as the cross-linking agent, with Pb(ii) and Zn(ii) as the dual template ions. Through systematic optimization of preparation conditions, the optimal polymer (DIIP21) was identified, and comprehensive structural characterization and adsorption performance evaluations were conducted on both DIIP21 and the corresponding non-imprinted polymer (NIP21). The results showed that the maximum adsorption capacities of DIIP21 for Pb(ii) and Zn(ii) were 1.73 mmol g−1 and 1.78 mmol g−1, respectively. The adsorption kinetics followed the pseudo-second-order model, while the adsorption isotherms were better described by the Freundlich model. Furthermore, competitive adsorption experiments in a mixed system containing five coexisting metal ions demonstrated that DIIP21 exhibited high specific recognition and binding affinity towards Pb(ii) and Zn(ii). Therefore, this study provides a useful reference for the development of dual-template ion-imprinting technology.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"132 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148853464","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":"Polystyrene nanoplastics exert dual roles in modulating sertraline hydrochloride toxicity in hydroponically grown rice","authors":"Xue Cao,Ziqin Li,Xiangju Fan,Huizhen Deng,Youming Dong,Zhengguo Song,Minling Gao","doi":"10.1039/d5en00913h","DOIUrl":"https://doi.org/10.1039/d5en00913h","url":null,"abstract":"Pharmaceuticals and nanoplastics are increasingly co-occurring in agroecosystems, yet their interactions in crop systems remain insufficiently characterized. Here, we examined the individual and combined effects of sertraline hydrochloride (Ser-HCl) and polystyrene nanoplastics (PS; 80 and 300 nm) on hydroponically grown rice (Oryza sativa). Biomass responses and oxidative stress indicators in root tissues, together with dissolved organic matter (DOM) fluorescence and microbial characteristics in hydroponic solution, were evaluated. Ser-HCl exposure alone caused dose-dependent phytotoxicity, leading to significant reductions in root biomass. Under co-exposure, PS caused modest changes in Ser-HCl-induced biomass responses. Root biomass was partially restored in some treatments, but this effect was not consistent across PS particle sizes. PS partially attenuated selected Ser-HCl-associated microbial responses, including changes in alpha diversity and community-level carbon-source utilization, whereas effects on DOM fluorescence characteristics were comparatively limited. In contrast, co-exposure was associated with greater changes in selected oxidative stress indicators in root tissues. Collectively, these findings demonstrate that nanoplastics can exert limited but spatially differentiated modulatory effects on pharmaceutical toxicity in hydroponically grown rice. These findings underscore the complexity of co-contaminant interactions in crop systems and highlight the importance of distinguishing between root-tissue and root-solution responses.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"7 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148853465","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":"Nano-hematite promotes seed germination and stress resilience of maize: redox-mediated kick-start of respiratory metabolism","authors":"Qijun Wang,Yixia Zhu,Xionghui Deng,Jia Mei,Zhichao Yang,Xueyuan Gu,Shujuan Zhang,Dongmei Zhou,Jiankang Lu,Yichao Wang,Yujun Wang,Lijuan Zhao","doi":"10.1039/d6en00377j","DOIUrl":"https://doi.org/10.1039/d6en00377j","url":null,"abstract":"Successful seed germination is critical for agricultural production and ecosystem sustainability. Naturally occurring nano-minerals often coexist with seeds in the environment, yet their effects on seed germination remain largely unexplored. Here, we show that exposure to nano-hematite (α-Fe2O3) significantly promotes maize seed germination and resistance to multiple stresses (drought, cold, and salinity). Mechanistically, hematite at the nano-scale (∼200 nm) is internalized into seeds during germination and activate redox signaling, initiating early and vigorous mitochondrial respiration, as reflected by increased O2 consumption rate and elevated ATP production (34.1%) compared to unexposed seeds. LC-MS/MS analysis revealed higher abundance of primary metabolites (sugars, amino acids, fatty acids) in seeds exposed to hematite, indicating boosted catabolism of storage reserves. This metabolic shift provides carbon skeletons to fuel energy metabolism, ultimately accelerating germination. X-ray photoelectron spectroscopy (XPS) detected oxygen vacancies (OVs) and Fe2+ on the surface of hematite. The Fe2+/hematite hybrid acts as a Fenton-like catalyst, decomposing H2O2 to generate hydroxyl radicals (·OH). RNA-Seq analysis further revealed that nano-hematite reprograms the seed transcriptome, differentially regulating genes involved in redox signaling, ROS-quenching, central carbon and nitrogen metabolism, sugar/amino acid/ion transport, and defense response. This coordinated transcriptional reprogramming collectively fuels germination and enhances the plant's adaptive capacity to adverse conditions. These findings expand our understanding of the role of naturally occurring nano-minerals on seed germination, with potential benefits for agricultural productivity and ecological sustainability, especially under a changing climate.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"144 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148729287","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":"Surface chemistry-dependent phytotoxicity of polystyrene nanoplastics (PSNPs) in L. and its attenuation by the soil EPS: an and approach","authors":"Dhivya Viswanathan,Amisha Murugesan Angel,Abisha Christy Christudoss,R. Seenivasan,Murugesh Shivashankar,Amitava Mukherjee","doi":"10.1039/d6en00401f","DOIUrl":"https://doi.org/10.1039/d6en00401f","url":null,"abstract":"The increasing prevalence of nanoplastics (NPs) in soil ecosystems raises concerns regarding their phytotoxic effects. This research investigated the potential of soil extracellular polymeric substances (EPSs) to overcome polystyrene nanoplastics (PSNPs; ∼400 nm)–induced toxicity in Allium sativum L. Pristine aminated (ANPs) and carboxylated nanoplastics (CNPs) were initially assessed for their toxicity (0.1–10 mg L−1). Exposure to 10 mg L−1 NPs significantly reduced root length and increased reactive oxygen species (ROS) levels, with ANPs exhibiting greater toxicity than CNPs, indicating surface-charge-dependent phytotoxic effects. To elucidate the stress-mitigating potential of the soil EPS, two exposure strategies were employed with three varying ratios of EPS: (i) in situ co-addition of EPS and NPs, and (ii) ex situ EPS pre-coronation of NPs prior to plant exposure. Both approaches markedly alleviated NPs-induced oxidative stress and growth inhibition when compared to their pristine counterparts. However, ex situ EPS coronation proved more effective than the in situ addition, highlighting the importance of eco-corona formation in regulating NPs' physicochemical behaviour and plant interaction. Among the surface-functionalized NPs, EPS coronation resulted in a greater reduction of toxicity in the ANPs-treated groups compared to the CNPs-treated groups, suggesting stronger EPS interactions with positively charged NPs. Physicochemical characterisation, like Fourier-transform infrared (FTIR) spectroscopy, total organic carbon (TOC) analysis and 3-dimensional excitation and emission matrix (3D-EEM), revealed that EPS modulated the surface interactions and minimised direct cell contact of the NPs. Further, the correlation among physiological and biochemical parameters was established using a clustered heatmap and the Pearson correlation model. Overall, the findings demonstrate that soil EPS serves as a natural attenuator of NPs' phytotoxicity by modulating NPs–plant interactions and reducing their ecological risk in agroecosystems.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"11 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148729297","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":"On–off–on colorimetric detection of Al using PPi-regulated Ru-doped porphyrinic MOFs","authors":"Jingjing Fang,Chan Song,Zishuo Liu,Qiwen Ling,Zhangzhi Li,Cheng Yao,Guanyao Wang","doi":"10.1039/d6en00489j","DOIUrl":"https://doi.org/10.1039/d6en00489j","url":null,"abstract":"Excessive accumulation of Al3+ poses risks to environmental safety and human health, necessitating rapid and reliable detection. Herein, a pyrophosphate (PPi)-assisted “on–off–on” colorimetric sensor for Al3+ is developed using a ruthenium-doped porphyrinic metal–organic framework (Ru-PCN-222). The enhanced peroxidase-like activity of Ru-PCN-222 originates from the intrinsic catalytic properties of Ru3+ centers and their electronic modulation of the framework. PPi effectively suppresses the catalytic activity of Ru-PCN-222, while Al3+ preferentially binds PPi, alleviating this inhibition and restoring activity. Owing to this specific interaction, the sensor can detect Al3+, with a linear range of 1–40 μM and a detection limit of 0.28 μM. The platform also performs reliably in real samples, demonstrating potential for environmental and food analysis.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"35 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148729302","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":"SERS sensors for environmental monitoring: fabrication, analyte delivery, and applications","authors":"Seong Jae Kim,Yoon Sick Eom,Jun Young Park,Sanha Kim","doi":"10.1039/d6en00246c","DOIUrl":"https://doi.org/10.1039/d6en00246c","url":null,"abstract":"The continuous release of diverse pollutants poses serious risks to ecosystems and human health, driving the urgent demand for highly sensitive and selective analytical tools. Surface-enhanced Raman scattering (SERS) has emerged as a promising platform for environmental monitoring due to its label-free detection capability and ultrahigh sensitivity. This review provides a comprehensive overview of recent advances in SERS sensors from materials design to practical implementation. First, we summarize key strategies for fabricating high-performance and cost-effective SERS substrates, highlighting nanostructure engineering, hotspot optimization, and scalable fabrication routes. Next, we discuss analyte delivery strategies tailored to different analyte types—including liquid, solid, gas, and aerosol phases—to improve SERS performance. Representative applications for detecting heavy metals, nanoplastics, perfluoro- and polyfluoroalkyl substances, and pesticides are then presented, emphasizing the advantages of SERS over conventional analytical techniques. Finally, current challenges in in situ measurement and multiplex detection in complex matrices are critically examined, and future perspectives are proposed for AI-assisted SERS technologies and on-site analytical systems. By bridging nanofabrication technologies with environmental sensing applications, this review aims to guide the rational design of next-generation SERS platforms for effective environmental monitoring.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"22 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148729286","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":"Insights of cadmium isotopes in the soil–plant system for deciphering nanoscale zero-valent iron remediation processes in contaminated soil","authors":"D. Baragaño,B. Astray,M. Vítková,V. Chrastný,M. Komárek,G. Ratié","doi":"10.1039/d6en00022c","DOIUrl":"https://doi.org/10.1039/d6en00022c","url":null,"abstract":"Cadmium (Cd) immobilization during soil remediation with nanoscale zero-valent iron (nZVI) is commonly assessed through changes in dissolved Cd concentrations, but the mechanisms controlling Cd redistribution between soil, plants, and newly formed Fe phases remain poorly understood. Here, Cd isotope systematics were applied to elucidate Cd immobilization and bioavailability in a soil–plant system treated with nZVI and cultivated with Agrostis capillaris, a locally collected Cd accumulator species. The application of nZVI decreased Cd concentrations in pore water (145 to 33 μg L−1) and aerial plant tissues (22 to 9 mg kg−1) while preferentially immobilizing light Cd isotopes. Approximately 80% of Cd was immobilized by newly formed Fe oxyhydroxides coming from nZVI oxidation, with an estimated δ114/110Cd value of −0.05‰. Conversely, plants mobilized additional Cd pools from soil, contributing to isotopically lighter Cd in plant tissues. The combined isotopic fractionation induced by nZVI and plants modified Cd isotope compositions in pore water and plant compartments, with the lightest signatures observed in roots, consistent with Cd retention by Fe oxide phases formed during nZVI oxidation. These findings highlight the potential of Cd isotopes to unravel Cd fate and transformation pathways during soil remediation and provide valuable insights for the development of more effective soil management strategies.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"21 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148729289","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}