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Triple signal amplification electrochemical sensing platform for Hg^(2+) in water without direct modification of the working electrode

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Frontiers of Environmental Science & Engineering 2024年第7期18卷 157-167页

作者： Liuyin Hu jiahua Cui Tao Lu Yalin Wang jinping jia School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China International Copper Association Ltd.Shanghai 200020China

An ultrasensitive electrochemical biosensor to detect trace Hg^(2+)in environmental samples was developed utilizing nanogold-decorated magnetic reduced graphene oxide(MrGO-AuNPs),exonuclease III-assisted target cycle(Exo Ⅲ-ATC)and hybridization chain reaction(HCR)synergistic triple signal *** MrGO-AuNPs is a superior carrier for capture DNA(cDNA)and acts as magnetic media for automatic separation and *** innovative utilization of the magnetism and improved sensing efficiency obviates the need for direct modification and repeated polishing of the working ***,the three DNA hairpins(cDNA,methylene blue(MB)labeled HP1 and HP2)further contribute to biosensor specificity and *** cDNA captures Hgt,it activates Exo Ⅲ-ATC due to the formation of a sticky end in the DNA stem via thymine-Hig-thymidine(T-Hg^(2+)-T),this leads to the hydrolysis of self-folded DNA by Exo Ⅲ-ATC to form"key"DNA(kDNA).The kDNA subsequently initiates HCR,resulting in massive super-sandwich structures(kDNA-[HP1/HP2])carrying signaling molecules on MrGO-AuNPs,and this overall structure serves as a signal probe(SP).Leveraging magnetic adsorption,the SP was automatically adsorbed onto the magneto-glass carbon electrode(MGCE),generating an amplified *** biosensor's detection limit(LOD)was 3.14 pmol/L,far below the limit of 10 nmol/L for mercury in drinking water set by the US *** biosensor also showed excellent selectivity when challenged by interfering ions,and the results of its application in actual samples indicate that it has good potential for practical applications in environmental monitoring.

关键词： Electrochemical sensing Hg^(2+) Amplification Graphene Hybridization chain reaction Exonuclease Ⅲ

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Target the neglected VOCs emission from iron and steel industry in China for air quality improvement

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环境科学与工程前沿(英文) 2023年第8期17卷 49-56页

作者： Chenglin Cai Juexiu Li Yi He jinping jia China-UK Low Carbon College Shanghai Jiao Tong UniversityShanghai 200240China School of Energy&Environment Zhongyuan University of TechnologyZhengzhou 450007China John Jay College and the Graduate Center The City University of New YorkNew YorkNY 10019USA School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Recent years have witnessed significant improvement in China’s air *** environmental protection measures have led to significant decreases in sulfur dioxide(SO2),nitrogen oxides(NOx),and particulate matter(PM)emissions since *** there is no denying that the air quality in 135 cities is inferior to reaching the Ambient Air Quality Standards(GB 3095–2012)in *** terms of temporal,geographic,and historical aspects,we have analyzed the potential connections between China’s air quality and the iron and steel *** non-target volatile organic compounds(VOCs)emissions from iron and steel industry,especially from the iron ore sinter process,may be an underappreciated index imposing a negative effect on the surrounding areas of ***,we appeal the authorities to pay more attention on VOCs emission from the iron and steel industry and establish new environmental *** different iron steel flue gas pollutants will be eliminated concurrently with the promotion and application of new technology.

关键词： Volatile organic compounds Iron and steel industry Air quality Sinter flue gas emission

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Evaluation of 1,4-naphthoquinone derivatives as antibacterial agents:activity and mechanistic studies

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Frontiers of Environmental Science & Engineering 2023年第3期17卷 49-61页

作者： Zhizhuo Liu Zhemin Shen Shouyan Xiang Yang sun jiahua Cui jinping jia School of Environmental Science&Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

The diverse and large-scale application of disinfectants posed potential health risks and caused ecological damage during the 2019-nCoV pandemic,thereby increasing the demands for the development of disinfectants based on natural products,with low health risks and low aquatic *** the present study,a few natural naphthoquinones and their derivatives bearing the 1,4-naphthoquinone skeleton were synthesized,and their antibacterial activity against selected bacterial strains was *** vitro antibacterial activities of the compounds were investigated against Escherichia coli and Staphylococcus *** the minimum inhibitory concentration(MIC)of≤0.125μmol/L for juglone(1a),5,8-dimethoxy-1,4-naphthoquinone(1f),and 7-methyl-5-acetoxy-1,4-naphthoquinone(3),a strong antibacterial activity against *** was *** 1,4-naphthoquinone derivatives exhibited a strong antibacterial activity,with MIC values ranging between 15.625 and 500μmol/Land ECso values rangingbetween10.56 and248.42μmol/*** of the synthesized compounds exhibited strong antibacterial activities against *** these compounds,juglone(la)showed the strongest antibacterial *** results from mechanistic investigations indicated that juglone,a natural naphthoquinone,caused cell death by inducing reactive oxygen species production in bacterial cells,leading to DNA *** addition,juglone could reduce the self-repair ability of bacterial DNA by inhibiting RecA *** addition to having a potent antibacterial activity,juglone exhibited low cytotoxicity in cell-based *** conclusion,juglone is a strong antibacterial agent with low toxicity,indicating that its application as a bactericidal agent may be associated with low health risks and aquatic toxicity.

关键词： 1,4-naphthoquinone derivatives Antibacterial Actionmechanism RecA

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Photodeposited FeOOH vs electrodeposited Co-Pi to enhance nanoporous BiVO4 for photoelectrochemical water splitting

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Journal of Semiconductors 2017年第5期38卷 24-29页

作者： Aihua jia Miao Kan jinping jia Yixin Zhao School of Environmental Science and Engineering Shanghai Jiao Tong University

Co-Pi and FeOOH cocatalysts were in-situ deposited on the surface of nanoporous BiVO4 *** FeOOH cocatalyst has little effect on the BiVO4 samples＇ morphologies,while the electrodeposited CoPi cocatalyst seems to affect the surface of BiVO4 The impedance intensity modulated photocurrent spectroscopy（IMPS）,Mott-Schottky（M-S） techniques characterize BiVO4 samples photoelectrochemical performance with the deposition of Co-Pi and *** Co-Pi/BiVO4 shows better photoelectrochemical performance than the FeOOH/BiVO4,but the FeOOH/BiVO4 exhibited the better *** flat band potential and slope of M-S plotof FeOOH/BiVO4 have little variations compared with *** contrast,Co-Pi/BiVO4 exhibited the down shifted flat band potential,which is beneficial for the photoelectrochemical water *** electron transfer measurements revealed that the deposition of FeOOH and Co-Pi onto BiVO4 significantly enhanced the photoelectrochemical performance via reducing the interface resistance and promoting the electron ***,Co-Pi cocatalysts can further pin the transport-limiting traps and significantly facilitate the electron transport.

关键词： BiVO4 FeOOH Co-Pi water splitting

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Effect of denitrifying bacteria on the electrochemical reaction of activated carbon fiber in electrochemical biofilm system

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Frontiers of Environmental Science & Engineering 2007年第3期1卷 305-310页

作者： YING Diwen jia jinping ZHANG Lehua School of Environmental Science and Engineering Shanghai Jiaotong UniversityShanghai 200240China

An electrochemical-activated denitrifying bio-film system consisting of activated carbon fiber electrodes immobilized with denitrifying bacteria film as cathode was studied.A revised model for an electrochemical-activated denitrifying biofilm was developed and validated by electro-chemical analysis of cathodal polarization curves and nitrate consumption *** cathodal polarization curve and nitrate consumption rate were introduced to verify the rate of electrochemical reaction and the activity of denitrifying bacteria,*** was shown that the denitrification process effectively strengthened the electrochemical reaction while the electron also intensified denitrification *** was transferred between electrochemical process and biological process not only by hydrogen molecule but also by new produced active hydrogen ***,a parameter of apparent exchange current density was deprived from the cathodal polarization curve with high overpotential,and a new bio-effect current density was defined through statistical analysis,which was linearly dependent to the activity of denitrification *** carbon fiber(ACF)electrode was also found to be more suitable to the electrochemical denitrifying system compared with graphite and platinum.

关键词： biofilm denitrification electrochemistry cathodal polarization

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De-colorization of Reactive Brilliant Orange X-GN by a novel rotating electrochemical disc process

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Journal of Environmental Sciences 2008年第8期20卷 927-932页

作者： Zhong Dengjie Yang Ji Xu Yunlan jia jinping Wang Yalin Sun Tonghua Shanghai jiao Tong Univ Sch Environm Sci & Engn Shanghai 200240 Peoples R China Tsinghua Univ Dept Environm Sci & Engn Beijing 100084 Peoples R China

A novel electrochemical setup for wastewater treatment-rotating electrochemical disc process(RECDP)was developed in this article. The anode and cathode are distributed alternatively and evenly on a flat round disc,which was designed to improve mass transfer of organics from bulk solution to electrode surface,while at the same time increasing oxygen transfer from air to the liquid to benefit the organics *** color removal of dye Reactive Brilliant Orange X-GN(RBO)was experimentally investigated u...

关键词： electrochemistry de-colorization dye wastewater rotating electrochemical disc process(RECDP)

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Secondary battery inspired ɑ-nickel hydroxide as an efficient Ni-based heterogeneous catalyst for sulfate radical activation

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Science Bulletin 2018年第5期63卷 278-281页

作者： Dongting Yue Xufang Qian Meng Ren Mengyuan Fang jinping jia Yixin Zhao School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China

Highly reactive radical species play an important role in syn-thetic chemistry, industrial processes, and environmental remedi-ation applications [1,2]. The radicals can be formed by eitherthermal decomposition of highly active oxidants or by catalyticactivation of stable oxidants under mild conditions [2]. Recently,the sulfate radical （.504） with its advantages of strong oxidizingpower, selective reactivity, and stability over a broad range of pHhas emerged as an excellent and versatile oxidant for a variety ofapplication [5].

关键词：中国科学通报英文版

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Backstepping control of a quadrotor unmanned aerial vehicle based on multi-rate sampling

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Science China(Information Sciences) 2019年第1期62卷 229-231页

作者： Fakui WANG Weisheng CHEN Hao DAI Jing LI jinping jia School of Aerospace Science and Technology Xidian University School of Mathematics and Statistics Xidian University

Dear editor,An unmanned aerial vehicle (UAV) is a portable power unit that uses aerodynamic forces for carrying loads. A UAV does not have a human pilot on board; it is controlled remotely or programmed to fly autonom... 详细信息

关键词： Backstepping control of a quadrotor unmanned aerial vehicle based on multi-rate sampling

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Catalytic performance improvement of volatile organic compounds oxidation over MnO_(x) and GdMnO_(3) composite oxides from spent lithium-ion batteries:Effect of acid treatment

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Chinese Journal of Chemical Engineering 2021年第6期34卷 278-288页

作者： Mingming Guo Lizhong Liu jia-nan Gu Hongbo Zhang Xin Min jianxing Liang jinping jia Kan Li Tonghua Sun School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Chemistry and Chemical Engineering Nantong UniversityNantong 226019China School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China Shanghai Institute of Pollution Control and Ecology Security Shanghai 200092China Shanghai Engineering Research Center of SolidWaste Treatment and Resource Recovery Shanghai 200240China

In this work,cathode materials of spent lithium-ion ternary batteries are recovered and used as metal precursor to prepare multi-metal oxides MnO_(x)(SY)and GdMnO_(3)(SY)via combustion method and sol-gel method,***,a series of MnO_(x)(SY)-n and GdMnO_(3)(SY)-n(n=0.05,0.10,1.00,4.00,n represents the dilute HNO_(3) concentration)catalysts are fabricated by acid treatment of MnO_(x)(SY)and GdMnO_(3)(SY)samples and catalytic activities of oxygenated VOCs oxidation over all the prepared catalysts are *** evaluation results show that acid-treated MnO_(x)(SY)-0.10 and GdMnO_(3)(SY)-0.05 samples perform the optimum VOCs removal efficiency respectively,which may be attributed to their obvious enhancement of physicochemical *** detail,Mn O_(x)(SY)-0.10 and GdMnO_(3)(SY)-0.05 samples exhibit the larger specific surface area,bigger amount of surface high-valence metal ions(Mn^(4+),Co^(3+),Ni^(3+)),more abundant adsorbed oxygen species and better low-temperature reducibility,which can play a crucial role in the significant improvement of VOCs *** situ DRIFTS results imply that the possible main intermediates are-OCO,-COO and-C-O species produced during VOCs *** by-products are further determined via TD/GC-MS analysis.

关键词： Spent lithium-ions batteries Acid treatment Multi manganese-based oxides and perovskite VOCs oxidation

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Indicating landfill stabilization state by using leachate property from Laogang Refuse Landfill

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Frontiers of Environmental Science & Engineering 2014年第3期8卷 405-410页

作者： Ziyang LOU Xiaoli CHAI Youcai ZHAO Yu SONG Nanwen ZHU jinping jia School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China The State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and Engineering Tongii University Shanghai 200092 China

Variation and evolution process of leachate can be applied as a reference for landfill stabilization phase. In this work, leachates with different ages were collected from Laogang Refuse Landfill, and characterized with 14 key parameters. Simultaneously, principal component analysis （PCA） was applied to develop a synthetic parameter-F based on these 14 parameters, and a logarithm equation was simulated for the landfill stabilization process finally. It was predicted that leachates would meet Class I and Class II in standard for pollution control on the landfill site of municipal solid waste （GB 16889-1997） after 32 years and 22 years disposal under the natural attenuation in the humid and warm southern areas of China, respectively. The predication of landfill state would be more accurate and useful according to the synthetic parameter F of leachate from a working landfill.

关键词： landfill stabilization leachate evolution prin- cipal component analysis

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