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| 1 | 生物炭纳米复合材料去除环境中有机污染物研究进展显示文摘近年来,生物炭在环境修复、固碳、土壤改良等方面的得到广泛应用,与纳米材料联合制备的新型生物炭纳米复合材料使原生生物炭的比表面积、孔隙结构、官能团、催化降解能力等方面都有了较大改善,具有更好的可持续性和高效性,对环境中有机污染物具有良好的去除能力。本文介绍了生物炭纳米复合材料的不同制备工艺,重点阐述了生物炭纳米复合材料对不同环境介质中有机污染物的去除机理及应用,为后续生物炭纳米复合材料在环境修复应用的工程化和商业化提供理论依据和技术参考。 | 代文静 胡健 吴攀 刘涛泽 卢然 | 2020 | 地球与环境2020，48，3： | 9 |
| 2 | Antimicrobial activity of silver loaded MnO_2 nanomaterials with different crystal phases against Escherichia coli显示文摘Silver-loaded MnO_2 nanomaterials(Ag/MnO_2),including Ag/α-MnO_2,Ag/β-MnO_2,Ag/γ-MnO_2and Ag/δ-MnO_2 nanorods,were prepared with hydrothermal and impregnation methods.The bactericidal activities of four types of Ag/MnO_2 nanomaterials against Escherichia coli were investigated and an inactivation mechanism involving Ag^+ and reactive oxygen species(ROS)was also proposed.The bactericidal activities of Ag/MnO_2 depended on the MnO_2 crystal phase.Among these nanomaterials,Ag/β^-MnO_2 showed the highest bactericidal activity.There was a 6-log decrease in E.coli survival number after treatment with Ag/β^-MnO_2 for120 min.The results of 5,5-dimethyl-l-pyrroline-N-oxide spin-trapping measurements by electron spin resonance indicate OH and O_2^- formation with addition of Ag/β-MnO_2,Ag/γ-MnO_2 or Ag/δ-MnO_2.The strongest peak of OH appeared for Ag/β-MnO_2,while no OH or ·O_2^-signal was found over Ag/α-MnO_2.Through analysis of electron spin resonance(ESR) and Ag+elution results,it could be deduced that the toxicity of Ag^+ eluted from Ag/MnO_2 nanomaterials and ROS played the main roles during the bactericidal process.Silver showed the highest dispersion on the surface of β-MnO_2,which promoted ROS formation and the increase of bactericidal activity.Experimental results also indicated that Ag/MnO_2 induced the production of intracellular ROS and disruption of the cell wall and cell membrane. | Lian Wang Hong He Changbin Zhang Li Sun Sijin Liu Shaoxin Wang | 2016 | Journal of Environmental Sciences2016，28，3： | 6 |
| 3 | 水中金属纳米颗粒对细菌的光致毒性机理显示文摘金属纳米颗粒由于具有特殊的理化性质,被广泛应用于化学、光学和生物学等领域,使其在应用的过程中不可避免地释放到水体中。近年来,金属纳米颗粒对生态系统和人类健康造成了潜在危害,引起了日益广泛的关注。本文对目前水环境中存在的纳米颗粒的种类、来源、理化性质及金属纳米颗粒对细菌光致毒性的影响因素(光源波长、粒径大小、天然有机质和介质组分)进行了详细介绍,并通过有毒金属离子释放、活性氧自由基(羟基自由基、超氧阴离子自由基和单线态氧)产生以及粒径变化等光化学现象,阐述了金属纳米颗粒物对细菌的光致毒性机理。最后总结了目前金属纳米颗粒在环境行为和光致毒性研究中面临的主要问题,并在此基础上提出将来金属纳米颗粒光致毒性的研究方向(如金属纳米颗粒的定量结构-活性关系,其他污染物与金属纳米颗粒的复合光致毒性效应等)。 | 李阳 牛军峰 张驰 王正早 郑梦源 商恩香 | 2014 | 化学进展2014，26，2： | 5 |
| 4 | 水环境中纳米氧化锌的环境行为及生物毒性研究进展显示文摘随着纳米氧化锌的大量生产和应用,作为其最终受体之一的水环境将面临越来越大的威胁.纳米氧化锌在水环境中的团聚,溶解等环境行为使其具有不稳定性,在很大程度上影响着纳米氧化锌在水体中的迁移性、生物可利用性以及对生态环境的毒性.本文着重探讨纳米氧化锌在水环境中的环境行为及其影响控制因素和检测分析方法,归纳纳米氧化锌对不同种类水生生物的毒性效应,分析纳米氧化锌的毒性机制及其存在的问题,并对水环境中纳米氧化锌的环境行为及生物毒性的研究方向进行了展望. | 王宁 刘丹 谢敏伟 李启彬 刘庆梅 | 2016 | 环境化学2016，35，12： | 5 |
| 5 | Toxicity and mechanisms of action of titanium dioxide nanoparticles in living organisms显示文摘Titanium dioxide nanoparticles(TiO_2 NPs) are one of the most widely used nanomaterials in the consumer products, agriculture, and energy sectors. Their large demand and widespread applications will inevitably cause damage to organisms and ecosystems. A better understanding of TiO_2 NP toxicity in living organisms may promote risk assessment and safe use practices of these nanomaterials. This review summarizes the toxic effects of TiO_2 NPs on multiple taxa of microorganisms, algae, plants, invertebrates, and vertebrates. The mechanism of TiO_2 NP toxicity to organisms can be outlined in three aspects: The Reactive Oxygen Species(ROS)produced by TiO_2 NPs following the induction of electron–hole pairs; cell wall damage and lipid peroxidation of the cell membrane caused by NP-cell attachment by electrostatic force owing to the large surface area of TiO_2 NPs; and TiO_2 NP attachment to intracellular organelles and biological macromolecules following damage to the cell membranes. | Jing Hou Luyao Wang Chunjie Wang Songlin Zhang Haiqiang Liu Shiguo Li Xiangke Wang | 2019 | Journal of Environmental Sciences2019，31，1： | 4 |
| 6 | Synchrotron FTIR spectroscopy reveals molecular changes in Escherichia coli upon Cu^2+ exposure显示文摘Copper ions(e.g.,Cu^(2+)) have outstanding antibacterial properties,but the exact mechanism is rather complex and not fully understood.In this work,synchrotron Fourier transform infrared(FTIR) spectroscopy was used as an analytical tool to investigate the CuCl_2-induced biochemical changes in Escherichia coli.Our spectral measurements indicated that this technique is sensitive enough to detect changes in membrane lipids,nucleic acids,peptidoglycans and proteins of Cu^(2+)-treated bacteria.Interestingly,for short-time treated cells,the effects on phospholipid composition were clearly shown,while no significant alterations of proteins,nucleic acids and peptidoglycans were found.PeakForce quantitative nano-mechanics mode atomic force microscopy(AFM)confirmed the changes in the topography and mechanical properties of bacteria upon the Cu^(2+) exposure.This study demonstrated that FTIR spectroscopy combined with AFM can provide more comprehensive evaluation on the biochemical and mechanical responses of bacteria to copper. | Xiao-Juan Hu Zhi-Xiao Liu Ya-Di Wang Xue-Ling Li Jun Hu Jun-Hong Lv | 2016 | Nuclear Science and Techniques2016，27，3： | 1 |
| 7 | 纳米金属及氧化物对污染处理的影响研究进展显示文摘纳米金属及氧化物在日常生活中应用广泛,它们会通过各种途径进入环境,因此需要对它们的环境和健康风险进行评估。纳米金属及氧化物具有独特的物理化学性质。综述了纳米金属及氧化物对污染去除过程中微生物的毒性方面的文献,特别关注了其对污染处理过程(污水处理、固体废弃物处理)的影响,并阐述了可能的毒性机制。在此基础上,探讨了纳米金属及氧化物的微生物毒性的研究目前存在的问题和未来研究的展望。 | 董琳琳 | 2014 | 能源与节能2014，，3： | 0 |
| 8 | Release of ZrO2 nanoparticles from ZrO2/Polymer nanocomposite in wastewater treatment processes显示文摘The widespread use of nano-enabled water treatment composites(NWTCs)can result in the release of nanoparticles(NPs)into environmental waters.Studying the release of NPs from NWTCs is of great significance for evaluating the material stability,and environment and biological safety.This work evaluated the amount and species of Zr released from a NWTC,a ZrO2/polymer composite(HZO@D201),during the treatment of electroplating wastewater.About 5 g of the HZO@D201 particles,consisting of porous spheres(0.8 mm in diameter)loaded with ZrO2 NPs,were packed into a glass column(130 mm in length and20 mm in diameter)and treated with wastewater at a flow rate of 25 mL/hr.The release of Zr occurred mainly in the initial stages of water treatment,decreased with the increase of treatment volume,and approached an equilibrium value of approximately 3.79μg/L at the treatment volume of about 800 bed volumes.The total amount of Zr released in the effluent was in the range of 2.62-140μg/L,which was mainly present in the form of ZrO2 NPs.The amounts of Zr released under acidic and alkaline conditions were markedly higher than that under neutral conditions,while the presence of humic acid significantly inhibited the release of Zr.Our study implied that the NWTCs could be a source of engineered NPs in environmental waters,and should be considered in evaluating the safety of ZrO2/polymer composites in water treatment. | Liteng Hao Xiaoxia Zhou Jingfu Liu | 2020 | Journal of Environmental Sciences2020，32，5： | 0 |
| 9 | Ecological and toxicological assessments of anthropogenic contaminants based on environmental metabolomics显示文摘There has long been a great concern with growing anthropogenic contaminants and their ecological and toxicological effects on living organisms and the surrounding environment for decades.Metabolomics,a functional readout of cellular activity,can capture organismal responses to various contaminant-related stressors,acquiring direct signatures to illustrate the environmental behaviours of anthropogenic contaminants better.This review entails the application of metabolomics to profile metabolic responses of environmental organisms,e.g.animals(rodents,fish,crustacean and earthworms)and microorganisms(bacteria,yeast and microalgae)to different anthropogenic contaminants,including heavy metals,nanomaterials,pesticides,pharmaceutical and personal products,persistent organic pollutants,and assesses their ecotoxicological impacts with regard to literature published in the recent five years.Contaminant-induced metabolism alteration and up/down-regulation of metabolic pathways are revealed in typical organisms.The obtained insights of variations in global metabolism provide a distinct understanding of how anthropogenic contaminants exert influences on specific metabolic pathways on living organisms.Thus with a novel ecotechnique of environmental metabolomics,risk assessments of anthropogenic contaminants are profoundly demonstrated. | Li-Juan Zhang Lu Qian Ling-Yun Ding Lei Wang Ming Hung Wong Hu-Chun Tao | 2021 | Environmental Science and Ecotechnology2021，，1： | 0 |
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