Environmental Science: Nano最新文献

Combined impacts of tetracycline and multi-walled carbon nanotubes on the growth of Chrysanthemum coronarium L. and its root environment 四环素和多壁碳纳米管对茼蒿生长及其根系环境的联合影响

IF 8.131 2区环境科学与生态学

Environmental Science: Nano Pub Date : 2025-04-04 DOI: 10.1039/d4en00790e

Minling Gao, Hongchang Peng, Zhengzhen Xiao, Ling Xiao, Youming Dong, Iranzi Emile RUSHIMISHA Emile RUSHIMISHA, Wenhao Yu, Zhengguo Song

{"title":"Combined impacts of tetracycline and multi-walled carbon nanotubes on the growth of Chrysanthemum coronarium L. and its root environment","authors":"Minling Gao, Hongchang Peng, Zhengzhen Xiao, Ling Xiao, Youming Dong, Iranzi Emile RUSHIMISHA Emile RUSHIMISHA, Wenhao Yu, Zhengguo Song","doi":"10.1039/d4en00790e","DOIUrl":"https://doi.org/10.1039/d4en00790e","url":null,"abstract":"Multi-walled carbon nanotubes (MW) and tetracycline (TC) usually co-occur in the environment and can threaten plant growth. However, little is known about their combined effect on plant growth. We conducted hydroponic experiments to investigate the uptake, transport, and compartmentalization of TC in Chrysanthemum coronarium L. in the presence of MW, and the combined effects of TC and MW on the root environment were also studied. The results revealed that the presence of MW reduced the concentration of TC in the four subcellular fractions, both in the leaves and roots, compared with TC alone. Co-pollution with TC and MW stimulated the production and accumulation of superoxide anions (O2.-), and hydrogen peroxide (H2O2) in the leaves and roots compared to TC alone, leading to an increase in the malondialdehyde content; this inhibited photosynthesis by reducing the activity of ribulose-1,5-bisphosphate carboxylase and dehydrogenase activity, resulting in a decrease in the dry weight of leaves and roots. The increased O2.- and H2O2 contents induced superoxide dismutase and catalase activities to alleviate oxidative damage. In addition, compared with single TC contamination, the co-application of TC and MW significantly increased the concentrations of oxalic acid and formic acid in root secretions, stimulated the activity of microorganisms, and improved autochthonous input and humification of dissolved organic matter in the growth medium. High-throughput sequencing revealed that Proteobacteria were the dominant bacteria in the medium solution across all groups, followed by Bacteroidetes and Firmicutes. Spearman and redundancy analyses demonstrated that an increase in the relative abundance of beneficial bacteria may stimulate the antioxidant system to defend against exogenous pollution. Our study provides valuable information about the combined toxicological effects of TC and MW on the growth of medicinal plants.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"3 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776111","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}

引用次数: 0

Evidently diverse effects of silver nanoparticles on Vibrio parahaemolyticus across different estuarine water samples

IF 8.131 2区环境科学与生态学

Environmental Science: Nano Pub Date : 2025-04-02 DOI: 10.1039/d5en00018a

Qianqian Yang, Xiangyi Hou, Feng Lu, Dahai Zhang, Wentao Lin, Nick Schlensky, Zhixiang Chen, Yan Zhang, Xuzhi Zhang

{"title":"Evidently diverse effects of silver nanoparticles on Vibrio parahaemolyticus across different estuarine water samples","authors":"Qianqian Yang, Xiangyi Hou, Feng Lu, Dahai Zhang, Wentao Lin, Nick Schlensky, Zhixiang Chen, Yan Zhang, Xuzhi Zhang","doi":"10.1039/d5en00018a","DOIUrl":"https://doi.org/10.1039/d5en00018a","url":null,"abstract":"The potential threat that silver nanoparticles (Ag NPs) pose to bacterial communities in estuarine environments has become a subject of intensifying global interest. Herein, eight water samples were collected from various estuarine sites. They were characterized by a wide array of distinct physicochemical properties, including pH, salinity, conductivity, turbidity, chemical oxygen demand (COD) and total suspended solids (TSS). Vibrio parahaemolyticus (V. parahaemolyticus) were exposed to Ag NPs at a series of concentrations in these water samples. Subsequently, the growth curves of the surviving bacterial cells were measured using an electronic microbial growth analyzer to determine the minimum inhibitory concentrations (MICs) of Ag NPs against V. parahaemolyticus. The results revealed a remarkable variation in the MICs, with values ranging from 12.0 mg/L to > 48.0 mg/L. A comprehensive analysis indicated that there were no clear and definitive relationships between the MIC and individual physicochemical parameters such as pH, salinity, conductivity, turbidity, COD and TSS. Instead, the adverse effect of Ag NPs on V. parahaemolyticus depended on the combination of these factors. In contrast, the MIC Ag NPs against V. parahaemolyticus in physiological saline, a commonly used simple laboratory medium, was determined to be 6.0 mg/L, which was significantly lower compared to those observed in the estuarine water samples. Therefore, when assessing the ecotoxicity of Ag NPs in actual estuarine scenarios, it is essential to ground on the antimicrobial data collected directly from realistic environmental matrices, rather than relying on data obtained from simple laboratory media or so-called representative water samples.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"58 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758363","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}

引用次数: 0

About the effects of true to life polyethylene terephthalate nanoparticles on macrophages.

IF 8.131 2区环境科学与生态学

Environmental Science: Nano Pub Date : 2025-04-01 DOI: 10.1039/d4en01063a

Veronique Collin-Faure, Aliro Villacorta, Marianne Vitipon, Helene Diemer, Sarah Cianferani, Ricardo Marcos, Elisabeth Darrouzet, Alba Hernández Bonilla, Thierry Rabilloud

{"title":"About the effects of true to life polyethylene terephthalate nanoparticles on macrophages.","authors":"Veronique Collin-Faure, Aliro Villacorta, Marianne Vitipon, Helene Diemer, Sarah Cianferani, Ricardo Marcos, Elisabeth Darrouzet, Alba Hernández Bonilla, Thierry Rabilloud","doi":"10.1039/d4en01063a","DOIUrl":"https://doi.org/10.1039/d4en01063a","url":null,"abstract":"Plastics are emerging pollutants of great concern. Macroplastics degrade into microplastics and nanoplastics, which can accumulate in living organisms with still poorly known consequences. Nanoplastics being particulate pollutants, they are handled in animal organisms by scavenger cells such as macrophages, which are important players in the immune system. Polyethylene terephthalate is one of these plastics of concern, as it is widely used in food packaging where it releases nanoparticles. We have thus undertaken a study on the effects of true-to-life polyethylene terephthalate nanoparticles prepared from water bottles on macrophages. To this purpose, we used a combination of proteomics and targeted validation experiments. Proteomics showed important adaptive changes in the proteome in response to exposure to polyethylene terephthalate nanoparticles. These changes affected for example mitochondrial, cytoskeletal and lysosomal proteins, but also proteins implicated in immune functions. Validation experiments showed that many of these changes were homeostatic, with no induced oxidative stress and no gross perturbation of the mitochondrial function. However, polyethylene terephthalate nanoparticles induced endoplasmic reticulum stress and disturbed the immune functions of macrophages. We indeed observed a slight pro-inflammatory response (1.5-fold increase in TNF secretion). We also observed a decrease in the response to bacterial stimulation (1.6 decrease in IL-6 secretion). We also observed a 20 percent decrease in the expression of important proteins involved in immune responses such as TLR2, TLR7 or collectin 12, and a two-fold decrease in the production of lysozyme. This suggests that macrophages having ingested polyethylene terephthalate nanoparticles are less efficient in their immune functions.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"131 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143744726","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}

引用次数: 0

A quality-by-design inspired approach to develop PET and PP nanoplastic test materials for use in in vitro and in vivo biological assays

IF 8.131 2区环境科学与生态学

Environmental Science: Nano Pub Date : 2025-04-01 DOI: 10.1039/d4en01186d

Lukas Wimmer, My Vanessa Nguyen Hoang, Jacqueline Schwarzinger, Vesna B Jovanović, Boban Anđelković, Tanja Cirkovic Velickovic, Thomas Meisel, Tassilo Waniek, Christiane Weimann, Korinna Altmann, Lea Ann Dailey

{"title":"A quality-by-design inspired approach to develop PET and PP nanoplastic test materials for use in in vitro and in vivo biological assays","authors":"Lukas Wimmer, My Vanessa Nguyen Hoang, Jacqueline Schwarzinger, Vesna B Jovanović, Boban Anđelković, Tanja Cirkovic Velickovic, Thomas Meisel, Tassilo Waniek, Christiane Weimann, Korinna Altmann, Lea Ann Dailey","doi":"10.1039/d4en01186d","DOIUrl":"https://doi.org/10.1039/d4en01186d","url":null,"abstract":"Micro- and nanoplastics have become environmental pollutants of concern, receiving increased attention from consumers, scientists, and policymakers. The lack of knowledge about possible impacts on wildlife and human health requires further research, for which well-characterized test materials are needed. A quality-by-design (QbD) driven approach was used to produce sterile, endotoxin monitored nanoplastics of polyethylene terephthalate (PET) and polypropylene (PP) with a size fraction of > 90% below 1 µm and high yield of > 90%. Glycerol was used as a versatile and biocompatible liquid storage medium which requires no further exogenous dispersing agent and maintained colloidal stability, sterility (0 CFU/mL), and low endotoxin levels (< 0.1 EU/mL) for more than one year of storage at room temperature. Further, the glycerol vehicle showed no biological effect on the tested human bronchial cell line Calu-3 up to 0.8% (w/v). Given the concentration of 40 mg/g nanoplastics in the glycerol stock, this corresponds to a nanoplastic concentration of 320 µg/mL. The surfactant-free nanoplastics are dispersible in bio-relevant media from the glycerol stock without changing size characteristics and are suitable for in vitro and in vivo research.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"36 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143744727","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}

引用次数: 0

Removal of suspended solids from water by waste biomass-based cationized cellulose nanofibers: a comparative analysis of flocculation performance from different biomass sources

IF 8.131 2区环境科学与生态学

Environmental Science: Nano Pub Date : 2025-04-01 DOI: 10.1039/d4en01120a

Peng Lin, Jinglin Yuan, Mingyu Lei, Yi Jin, Sikai Chen, Han Zhang

{"title":"Removal of suspended solids from water by waste biomass-based cationized cellulose nanofibers: a comparative analysis of flocculation performance from different biomass sources","authors":"Peng Lin, Jinglin Yuan, Mingyu Lei, Yi Jin, Sikai Chen, Han Zhang","doi":"10.1039/d4en01120a","DOIUrl":"https://doi.org/10.1039/d4en01120a","url":null,"abstract":"In response to the growing focus on bio-waste valorization, this study extracted cellulose fiber from rice straw, coffee grounds, corncob, and rape straw. The extracted fiber was subsequently cationically modified into cellulose nanofibers (QCNF) for effective flocculation in high-turbidity wastewater treatment. Scanning electron microscopy (SEM) revealed that the QCNF derived from the four biomass sources displayed a three-dimensional network structure, with each displaying distinct fiber morphologies. The QCNF derived from coffee grounds exhibited a flaky structure, the QCNF derived from corncob displayed short, rod-like fibers, and the QCNF derived from rice straw and rape straw showed chain-like structures, with rice straw fibers appearing particularly attenuated. The results indicate significant variation in the flocculation efficiency of QCNF derived from different bio-sources. QCNF prepared from rice straw exhibited the highest flocculation efficiency, achieving a removal rate of 90.6%. SEM analysis of the physical structure and morphology of the four types of QCNF revealed that nanofibers with slender chain-like structures are particularly well-suited for developing biomass-based flocculants.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"30 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143744728","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}

引用次数: 0

Acaricidal activity of geraniol-loaded lignin nanoparticles for the control of Brevipalpus chilensis: an eco-friendly approach to crop protection

IF 8.131 2区环境科学与生态学

Environmental Science: Nano Pub Date : 2025-03-28 DOI: 10.1039/d5en00155b

Natalia Juica, Gonzalo Bustos, Sindy Devis, Carolina Klagges, Nicolas Oneto, Jeffri S. Retamal, Luis Constandil

{"title":"Acaricidal activity of geraniol-loaded lignin nanoparticles for the control of Brevipalpus chilensis: an eco-friendly approach to crop protection","authors":"Natalia Juica, Gonzalo Bustos, Sindy Devis, Carolina Klagges, Nicolas Oneto, Jeffri S. Retamal, Luis Constandil","doi":"10.1039/d5en00155b","DOIUrl":"https://doi.org/10.1039/d5en00155b","url":null,"abstract":"The environmental pollution and health risks associated with synthetic pesticides have driven increasing interest in plant-derived biopesticides like geraniol. However, their practical application is limited by high volatility and low solubility. In this study, lignin nanoparticles were used as a carrier system to enhance the stability and acaricidal efficacy of geraniol against Brevipalpus chilensis. The nanoprecipitation process enabled the synthesis of spherical geraniol-loaded lignin nanoparticles with an average size of 200 ± 27.2 nm, a surface charge of −29± 3.9 mV and an encapsulation efficiency of 46.5%. The release profile of encapsulated geraniol was assessed, and UV exposure assays demonstrated significantly improved stability compared to free geraniol. Bioassays revealed significantly higher mortality rates of Brevipalpus chilensis when treated with geraniol-loaded nanoparticles compared to free geraniol, highlighting the enhanced efficacy of the encapsulated compound. Additionally, nanoparticle formulations exhibited low cytotoxicity in HeLa cells. Overall, this study underscores the potential of lignin nanoparticles as a promising delivery system for optimizing biopesticide formulations in sustainable agriculture","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"31 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723241","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}

引用次数: 0

Effect of disruption in intestinal barrier function during transgenerational process on nanoplastic toxicity induction in Caenorhabditis elegans 转基因过程中肠道屏障功能的破坏对诱导草履虫产生纳米塑料毒性的影响

IF 8.131 2区环境科学与生态学

Environmental Science: Nano Pub Date : 2025-03-26 DOI: 10.1039/d5en00149h

Yuxing Wang, Dayong Wang

{"title":"Effect of disruption in intestinal barrier function during transgenerational process on nanoplastic toxicity induction in Caenorhabditis elegans","authors":"Yuxing Wang, Dayong Wang","doi":"10.1039/d5en00149h","DOIUrl":"https://doi.org/10.1039/d5en00149h","url":null,"abstract":"After exposure at parental generation (P0-G), nanoplastics can induce transgenerational toxicity. Nevertheless, it remains unclear whether change in intestinal barrier function during transgenerational process affects the induction of nanoplastic toxicity. In the current study, polystyrene nanoparticle (PS-NP) was used as an example of nanoplastics. PS-NP (1 and 10 μg/L) caused transgenerational toxicity on locomotion behavior, brood size, and intestinal permeability. After exposure to PS-NP (1 and 10 μg/L) at P0-G, PS-NP accumulation was only observed at both P0-G and F1-G. RNA interference (RNAi) of acs-22 caused enhanced intestinal permeability, and PS-NP (10 μg/L) induced suppression in acs-22 expression from P0-G to F3-G. After RNAi of acs-22 at P0-G and F1-G, transgenerational toxicity of PS-NP (10 μg/L) was prolonged by more than two generations, and transgenerational PS-NP accumulation was prolonged till to F2-G. After RNAi of acs-22 at F2-G, transgenerational toxicity of PS-NP (10 μg/L) could be extended by more than two generations. Moreover, RNAi of acs-22 at F4-G caused extension of transgenerational PS-NP (10 μg/L) toxicity till to F5-G. Therefore, transgenerational toxicity of nanoplastics can be affected by disrupted intestinal barrier function induced by acs-22 RNAi during transgenerational process in organisms.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"71 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143703310","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}

引用次数: 0

Nanoscale phosphorus-based agrochemicals enhance tomato and rice growth via positively modulating the growth-associated gene expression and endophytic microbial community

IF 8.131 2区环境科学与生态学

Environmental Science: Nano Pub Date : 2025-03-25 DOI: 10.1039/d5en00140d

Mengchen Tian, Zihao Zhao, Qingqing Li, Zeyu Cai, Shuai Wang, Chuanxin Ma, Weili Jia, Xinxin Xu, Anqi Liang, Jason C. White, Baoshan Xing

{"title":"Nanoscale phosphorus-based agrochemicals enhance tomato and rice growth via positively modulating the growth-associated gene expression and endophytic microbial community","authors":"Mengchen Tian, Zihao Zhao, Qingqing Li, Zeyu Cai, Shuai Wang, Chuanxin Ma, Weili Jia, Xinxin Xu, Anqi Liang, Jason C. White, Baoshan Xing","doi":"10.1039/d5en00140d","DOIUrl":"https://doi.org/10.1039/d5en00140d","url":null,"abstract":"Nano-hydroxyapatite (nHA) has attracted increasing attention as a potential novel fertilizer. The present study investigated the effects of root exposure to nHAs (20 nm-nHA, 60 nm-nHA, 1% Cu-nHA, and 10% Cu-nHA) at 50 mg/kg on the growth and development of tomato (Solanum lycopersicum L.) and rice (Oryza sativa L.) seedlings for 50 days. Compared with the control, different types of 50 mg/kg nHA increased the biomass of seedlings by 10.7%-30.9%; for example, 20 nHA significantly increased the fresh weight of the two plant species by 17.2% and 29.2%, respectively. Additionally, 20 nm-nHA and 1% Cu-nHA altered the diversity of plant endophytic microbial communities and increased the abundance of plant-associated beneficial microorganisms, including Glomeromycotina, Funneliformis, and Blastocladiomycota. Transcriptomic analysis suggests that 20 nm-nHA and 1%Cu-nHA induced transcriptional reprogramming in exposed seedlings. KEGG pathway analysis shows that root exposure to 20 nm-nHA and 1% Cu-nHA promoted plant hormone signal transduction pathways in both tomato and rice roots; and, 1% Cu-nHA promoted photosynthesis and amino acid metabolism. Overall, this work demonstrates that root exposure to 50 mg/kg 20 nm-nHA significantly improves crop growth, and provides valuable insight into the development of novel nanoscale phosphorus fertilizers as a sustainable path for precision agriculture.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"46 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143695682","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}

引用次数: 0

Unlocking Actinide Pre-concentration Potential and Unique α-Scintillation Properties of Inorganic Nanotubes - Polyethersulfone Membrane Composite: A Viable Sensing Platform for Environmental Nuclear Forensics

IF 8.131 2区环境科学与生态学

Environmental Science: Nano Pub Date : 2025-03-24 DOI: 10.1039/d4en01159g

Sabyasachi Patra, Satyam Kumar, Jitendra Bahadur, Debasis Sen, Rahul Tripathi

{"title":"Unlocking Actinide Pre-concentration Potential and Unique α-Scintillation Properties of Inorganic Nanotubes - Polyethersulfone Membrane Composite: A Viable Sensing Platform for Environmental Nuclear Forensics","authors":"Sabyasachi Patra, Satyam Kumar, Jitendra Bahadur, Debasis Sen, Rahul Tripathi","doi":"10.1039/d4en01159g","DOIUrl":"https://doi.org/10.1039/d4en01159g","url":null,"abstract":"Radiometric assay of environmental samples has become an indispensable tool for nuclear safeguards and security. In spite of the availability of different radiometric techniques, the limiting factor today is the dearth of efficient separation materials to prepare samples for radiometric analysis directly from environmental samples. We herein demonstrate the potential of methyl functionalized aluminosilicate nanotubes (commonly known as methyl imogolite or Imo-CH3) for sequestering uranium and plutonium ions by arresting them from dilute aqueous solution in the form of insoluble hydroxides at alkaline condition, which subsequently form an optically transparent thin film on microporous PES membrane upon syringe filtration. Contrary to the individual counterparts, the PES-Imo-CH3 composite has been found to show a unique α-scintillation property in the presence of the arrested actinides, which has been used for gross α-radioactivity estimation at sub-Becquerel levels with a limit of detection 2.5 mBq.mL-1. The interaction and energy loss characteristics of α-particles in the PES-Imo-CH3 composite has been simulated by Monte Carlo method, which suggests the observed scintillation to be a result of indirect excitation of the Imo-CH3 nanotubes via a non-radiative energy transfer pathway. The PES-Imo-CH3 composite, used for gross scintillation counting, has also been demonstrated as a potential α-spectrometry platform, thus reducing the sample preparation steps and minimizing the nuclear forensic analysis timeline. The actinide sequestration efficiency of the nanotubes has been found to be 97.2 ± 1.2% for U and 99.5 ± 8.2% for Pu within the studied range of radioactivity concentrations with negligible selectivity between actinide elements, making it particularly unique for nuclear forensic applications where preserving the isotopic and elemental ratio is a key requirement.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"59 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677819","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}

引用次数: 0

Enhanced mineral carbonation on surface functionalized MgO as a Proxy for mine tailings

IF 8.131 2区环境科学与生态学

Environmental Science: Nano Pub Date : 2025-03-24 DOI: 10.1039/d4en00940a

Rajeev Kumar Rai, Rui Serra-Maia, Yingjie Shi, Peter Psarras, Aleksandra Vojvodic, Eric A Stach

{"title":"Enhanced mineral carbonation on surface functionalized MgO as a Proxy for mine tailings","authors":"Rajeev Kumar Rai, Rui Serra-Maia, Yingjie Shi, Peter Psarras, Aleksandra Vojvodic, Eric A Stach","doi":"10.1039/d4en00940a","DOIUrl":"https://doi.org/10.1039/d4en00940a","url":null,"abstract":"The escalating demands of industrialization and development underscore the necessity for an efficient and scalable Carbon Capture and Storage (CCS) methodology. Mineral carbonation of MgO presents itself as a promising solution due to its considerable theoretical capacity for CO2 adsorption. However, the sluggish kinetics of the carbonation process pose a significant challenge. Consequently, a comprehensive understanding of the structural and chemical alterations occurring during carbonation is imperative for material design. In this study, we conduct a thorough structural and chemical investigation of the MgO (sourced from different mine tailings) carbonation process using electron microscopic techniques. Our findings demonstrate that treating MgO with polar solvents enhances its degree of carbonation significantly, offering a promising avenue for improvement. Moreover, we observe a particle size dependency in MgO carbonation and note that the inclusion of additional materials, such as Si-based compounds, further accelerates the carbonation. Density functional theory (DFT) calculations provide insight into surface functionalization as a result of solvent treatment and its mechanistic effect on the origin of the enhanced carbonation of polar solvent-treated MgO, revealing a stronger interaction between CO2 and the treated MgO (100) surface as compared to the non-polar solvent treated surfaces. These discoveries showcase an alternative approach for enhancing MgO carbonation, thereby offering a potential method for sequestering atmospheric CO2 more effectively using mine waste rich in MgO.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":"123 1","pages":""},"PeriodicalIF":8.131,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677817","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}

引用次数: 0