【摘 要】
：
How to utilize inexhaustible solar light as a means of disinfection technology for its cheap and green remains a challenge.In this work,core-shell ZnO@ZIF-8 was synthesized and used for bacterial inactiva-tion synergizing with peroxymonosulfate (PMS) unde
【机 构】
：
State Key Laboratory of Hydraulics and Mountain River Engineering,College of Architecture and Enviro
论文部分内容阅读
How to utilize inexhaustible solar light as a means of disinfection technology for its cheap and green remains a challenge.In this work,core-shell ZnO@ZIF-8 was synthesized and used for bacterial inactiva-tion synergizing with peroxymonosulfate (PMS) under visible light irradiation.It took 50 min to achieve thorough sterilization for 7.5-log Escherichia coli (E.coli) cells in vis/PMS/ZnO@ZIF-8 system,compared with that 4.5-log reduction completed in vis/PMS/ZnO system under the same conditions.The enhanced photocatalytic disinfection mechanisms of fabricated ZnO@ZIF-8 were investigated by UV-vis diffuse re-flectance spectra,electrochemical impedance spectra and Mott-Schottky plots.The promoted bactericidal efficiency was attributed to higher charge-separation efficiency and stronger oxidation ability of photo-generated holes.Moreover,it was found that 1O2 and ·OH induced bacterial cell lesion process,and the former was the main active species.The external reactive oxygen species (ROS) caused a series of cell wall damage,intercellular ROS up-regulation and genome DNA unwinding,finally resulted in irreversible bacterial death.A two-route mechanism in vis/PMS/ZnO@ZIF-8 system was proposed,in which the gen-eration of 1O2 was supposed as the product of the oxygen oxidation of photo-generated holes and PMS dissociation.Our work is expected to provide advanced information about a low-cost water disinfection technology of visible light photocatalysis.
其他文献
Unremitting and intensive researches about efficient non-precious metal electrocatalysts are necessary for large-scale commercial applications of fuel cells,while iron and nitrogen co-doped carbon (Fe-N-C)materials has become one of the most promising ele
Developing highly efficient and cost-effective catalysts for electrochemically oxidizing biomass-derived 5-hydroxymethylfurfural (HMF) into value-added 2,5-furandicarboxylic acid (FDCA) is of great importance.Herein,we report a controllable nitrogen dopin
财政部于2017年发布修订版的收入准则,新准则以原则为导向,准则详解和应用指南均未对系统集成业务的会计处理做出明确规定.作为软件行业重要业务之一,系统集成业务具有综合性、多样性及复杂性等特性,在收入确认判断及辨析业务实质时有诸多难点.本文对软件行业系统集成业务收入确认难点问题进行深入分析并提出相应的解决方案.
Explore the photo-piezoelectric synergistic micro-mechanism by density functional theory (DFT) calcula-tions at the electronic and atomic level is important.In this work,to understand the synergistic mech-anism,atomic and electronic properties of typical
The electroreduction of CO2 (CO2RR) into value-added chemicals is a sustainable strategy for mitigating global warming and managing the global carbon balance.However,developing an efficient and selective catalyst is still the central challenge.Here,we dev
Designing and developing the highly efficient photocatalysts is full of significance to achieve spontaneous photolysis water.In this work,using the first-principles calculations,we have performed a systematic theoretical study of water splitting photocata
Ammonia (NH3) is one of the most important building blocks of the chemical industry and a promis-ing sustainable energy carrier.Conventional production of NH3 via the Haber-Bosch process requires high temperature and high pressure,which is energy demandin
公立医院不仅具有一般市场主体的经营功能,且不以营利为目的的社会公益事业单位.长期以来,公立医院的经营活动受到政府各方面的大力支持,但缺乏现代企业经营理念和内部控制体系,导致医院预算管理体系不健全,增加公立医院财务风险,造成公立医院负债比例高,影响到公立医院正常发展.《政府会计制度》的实施,要求公立医院建立全面预算管理体系,进一步规范医院各个部门的预算管理,加强医院内部控制,实现医院精细化管理,提高医院核心竞争力.
Electrochemical synthesis of ammonia has the advantages of low energy consumption and promising environmental protection,as compared to the traditional Haber-Bosch process.However,the commercial utilization of this novel system is limited by the low Farad
全面预算管理在医院财务管理中具有重要的作用,预算管理是医院管理的重要环节.全面预算管理对医院的指标考核、有效控制医疗成本都具有重要的意义.本文分析全面预算管理在医院财务管理中的应用和现状.