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Preparation of floating BiOCl_(0.6)I_(0.4)/ZnO photocatalyst and its inactivation of Microcystis aeruginosa under visible light

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Journal of environmental sciences 2023年第3期125卷 362-375页

作者： Hong Liu Liuliu Yang Houwang Chen Meng Chen Peng Zhang Ning Ding School of Environmental Science and Engineering Jiangsu Key Laboratory of Environmental Science and TechnologySuzhou University of Science and TechnologySuzhou 215009China Key Laboratory of Cleaner Production and Comprehensive Utilization of Resources China National Light IndustryDepartment of Environmental Science and EngineeringBeijing Technology and Business UniversityBeijing 100048China

Frequent occurrence of harmful algal blooms has already threatened aquatic life and human *** the present study,floating BiOCl_(0.6)I_(0.4)/ZnO photocatalyst was synthesized in situ by water bath method,and and applied in inactivation of Microcystis aeruginosa under visible *** composition,morphology,chemical states,optical properties of the photocatalyst were also *** results showed that BiOCl_(0.6)I_(0.4)exhibited laminated nanosheet structure with regular shape,and the light response range of the composite BZ/EP-3 (BiOCl_(0.6)I_(0.4)/ZnO/EP-3) was tuned from 582 to 638 *** results of photocatalytic experiments indicated that BZ/EP-3 composite had stronger photocatalytic activity than a single BiOCl_(0.6)I_(0.4)and ZnO,and the removal rate of chlorophyll a was 89.28%after 6 hr of photocatalytic *** photosynthetic system was destroyed and cell membrane of algae ruptured under photocatalysis,resulting in the decrease of phycobiliprotein components and the release of a large number of ions (K^(+),Ca^(2+)and Mg^(2+)).Furthermore,active species trapping experiment determined that holes (h+) and superoxide radicals (·O_(2)-) were the main active substance for the inactivation of algae,and the p-n mechanism of photocatalyst was ***,BZ/EP-3 showed excellent algal removal ability under visible light,providing fundamental theories for practical algae pollution control.

关键词： BiOCl_(0.6)I_(0.4)/ZnO Visible light Photocatalysis Algae removal

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Fault Diagnosis of Unmanned Aerial Vehicle Based on the Slime Mold Algorithm under Imbalanced Data Conditions 14

Fault Diagnosis of Unmanned Aerial Vehicle Based on the Slim...

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14th International Conference on reliability, Maintainability and Safety, ICRMS 2023

作者： Wu, Xinman Zhang, Wenjin Li, Yu Suo, Mingliang Institute of Reliability Engineering National Key Laboratory of Science and Technology on Reliability and Environmental Engineering School of Reliability and Systems Engineering Beihang University Beijing China

ISBN: (纸本)9798350329988

With the rapid progress of technology, the application of unmanned aerial vehicles (UAVs) has become widespread in various civilian and military activities. The research on fault diagnosis during a flight is a critical step towards enhancing the safety of UAV systems. Swarm-inspired heuristic algorithms have attracted significant attention owing to their fast iteration speed and strong optimization capabilities. This paper proposes a UAV fault diagnosis method based on the slime mold algorithm (SMA) under the condition of imbalanced data, thus addressing the issue of low diagnostic accuracy caused by a significantly longer normal flight time compared to the fault flight time in UAV operations. Using a real-world dataset of UAV flight faults with multiple fault patterns, the proposed approach optimizes the parameters of the support vector machine through SMA, thereby improving the fault diagnosis performance during actual UAV flights. © 2023 IEEE.

关键词： Micro air vehicle (MAV)

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Next generation desalination membrane with exceptional chlorine resistance

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science China Chemistry 2024年第11期67卷 3500-3502页

作者： Shihong Lin Xinglin Lu Department of Civil and Environmental Engineering Vanderbilt UniversityNashville TN 37235USA CAS Key Laboratory of Urban Pollutant Conversion Department of Environmental Science and EngineeringNational Synchrotron Radiation LaboratoryUniversity of Science and Technology of ChinaHefei 230026China

This highlight draws inspiration from a recent publication in science where Zhang and co-workers [1] from Nanjing University of science and technology reported a novel multifunctional polyester reverse osmosis(RO) membrane and its application in seawater desalination. This research represents a notable advancement in the field, as polyester membranes may potentially compete with state-of-the-art polyamide RO membranes in the mainstream market.

关键词： polyester exceptional chlorine

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Prediction model on hydrolysis kinetics of phthalate monoester:A density functional theory study

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Journal of environmental sciences 2024年第1期135卷 51-58页

作者： Tong Xu Jingwen Chen Deming Xia Weihao Tang Jiansheng Cui Chun Liu Shuangjiang Li College of Environmental Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050000China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and ManagementInstitute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China

As primary degradation products of phthalate esters,phthalate monoesters(MPEs)have been widely detected in various aquatic environments and drawn growing toxicological *** kinetics that is of importance for assessing environmental persistence of chemicals remain elusive for ***,kinetics of base-catalyzed and neutral hydrolysis for 18 MPEs with different leaving groups was investigated by density functional theory *** indicate that MPEs with leaving groups having p Kaof<10 prefer dissociative transition *** are more persistent than their parents,and their hydrolysis half-lives were calculated to vary from 3.4 min to 79.2 years(p H=7–9).A quantitative structure-activity relationship model was developed for predicting the hydrolysis kinetics *** was found that p Kaof the leaving groups and electronegativity of the MPEs are key factors determining the hydrolysis *** work may lay a theoretical foundation for better understanding the chemical process that governs MPE persistence in aquatic environments.

关键词： Phthalate monoesters Phthalate esters Hydrolysis Density functional theory Quantitative structure-activity relationship

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Stereoselective effects and its potential mechanism of ofloxacin on the growth and development of Rana nigromaculata:mainly liver lipid metabolism

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Frontiers of environmental science & engineering 2025年第4期19卷 125-138页

作者： Wenjun Zhang Miaomiao Teng Jin Yan Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education College of EnvironmentHohai UniversityNanjing 210098China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology School of Environmental Science and EngineeringSuzhou University of Science and TechnologySuzhou 215009China

Most research on antibiotics in the environment disregards chiral antibiotics,such as ofloxacin(OF).In this study,tadpoles of Rana nigromaculata were exposed to 1μg/L OF and levofloxacin(LVFX,an enantiomer of OF)for 75 *** with dextrofloxacin,LVFX treatment had a greater effect on the inhibition of bodyweight,body length,development stage,and pathological liver ***,OF exerts a stereoselective inhibitory effect on both growth and development,which is consistent with the results at the systemic metabolism *** analysis revealed that the differentially expressed genes between OF and LVFX were mainly immune *** metabolomics showed that the stereoselective biological effect of OF on *** was caused by differences in contents of PE-O 16:0-22:4,PE 16:0-14:0,TAG 45:0-FA16:0,PE-P 18:0-16:0,PE 16:0-16:0,PC 16:0-22:4+AcO,PE 18:1-18:3,PC 16:1-18:1+AcO,and PC 18:1-18:3+***,two enantiomers of OF were selectively bound to enzymes related to lipid *** study provides both theoretical and practical references for the accurate evaluation and scientific control of the ecological risk of chiral antibiotics.

关键词： Chiral antibiotics Amphibians Targeted metabolomics Molecular docking Obesity

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Solar evaporation for simultaneous oil-water separation and electricity generation with Janus wood-based absorbers

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Frontiers of environmental science & engineering 2024年第2期18卷 13-23页

作者： Yue Yang Ze Fu Qi Zhang Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science&TechnologyNanjing 210094China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced MicrostructuresCollege of Engineering and Applied SciencesKey Laboratory of Intelligent Optical Sensing and Manipulation(Ministry of Education)Jiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing 210093China

Oily wastewater from ocean oil spills endangers marine ecosystems and human health. Therefore, developing an effective and sustainable solution for separating oil-water mixtures is urgent. Interfacial solar photothermal evaporation is a promising approach for the complete separation of two-phase mixtures using only solar energy. Herein, we report a carbonized wood-based absorber with Janus structure of comprising a hydrophobic top-layer and an oleophobic bottom-layer for simultaneous solar-driven oil-water separation and electricity generation. Under sunlight irradiation, the rapid evaporation of seawater will induce a separation of oil-water mixtures, and cause a high salt concentration region underlying the interface, while the bottom “bulk water” maintains in a low salt concentration, thus forming a salinity gradient. Electricity can be generated by salinity gradient power. Therefore, oil-water separation efficiency of > 99% and derived extra electricity power of ~0.1 W/m2 is achieved under solar radiation, demonstrating the feasibility of oil-water separation and electricity production synchronously directly using solar energy. This work provides a green and cost-effective path for the separation of oil-water mixtures.

关键词： Oily wastewater Carbonized wood Salinity gradient Electricity generation Solar irradiation

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Adsorption and membrane separation for removal and recovery of volatile organic compounds

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Journal of environmental sciences 2023年第1期123卷 96-115页

作者： Guoqiang Gan Shiying Fan Xinyong Li Zhongshen Zhang Zhengping Hao State Key Laboratory of Fine Chemicals Key Laboratory of Industrial Ecology and Environmental Engineering(MOE)School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China National Engineering Laboratory for VOCs Pollution Control Material and Technology University of Chinese Academy of SciencesBeijing 101408China

Volatile organic compounds(VOCs)are a crucial kind of pollutants in the environment due to their obvious features of severe toxicity,high volatility,and poor *** is particularly urgent to control the emission of VOCs due to the persistent increase of concentration and the stringent *** China,clear directions and requirements for reduction of VOCs have been given in the“national plan on environmental improvement for the 13th Five-Year Plan period”.Therefore,the development of efficient technologies for removal and recovery of VOCs is of great *** technologies are favored by researchers due to their advantages in both recycling VOCs and reducing carbon *** them,adsorption and membrane separation processes have been extensively studied due to their remarkable industrial *** overview was to provide an up-to-date progress of adsorption and membrane separation for removal and recovery of ***,adsorption and membrane separation were found to be the research hotspots through bibliometric ***,a comprehensive understanding of their mechanisms,factors,and current application statuses was ***,the challenges and perspectives in this emerging field were briefly highlighted.

关键词： Volatile organic compounds(VOCs) Removal and recovery technology Adsorption Membrane separation Bibliometric analysis

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Oxygen vacancy-rich CoMoO4/Carbon nitride S-scheme heterojunction for boosted photocatalytic H_(2)production:Microstructure regulation and charge transfer mechanism

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Journal of Materials science & technology 2024年第31期198卷 176-185页

作者： Jiani Qin Yanli Dong Xiaojuan Lai Bo Su Bao Pan Chuanyi Wang Sibo Wang School of Environmental Science and Engineering Shaanxi University of Science and TechnologyXi'an 710021China Key Laboratory of Chemical Additives for China National Light Industry School of Chemistry and Chemical EngineeringShaanxi University of Science and TechnologyXi'an 710021China State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350116China

Developing highly efficient S-scheme photocatalysts is a subject of immense interest for harnessing solar energy towards sustainable hydrogen ***,a novel S-scheme heterojunction of oxygen vacancy-rich CoMoO_(4)/CN(CMO/CN)photocatalyst was rationally constructed through loading CoMoO_(4)nanorods on carbon nitride(CN)nanosheets via a direct one-pot calcination *** CMO/CN S-scheme heterojunction exhibited enhanced surface area,fine CN dispersion,rich oxygen vacancies,and accelerated charge separation/transfer efficiency,which were conducive to improving photocatalytic H_(2)evolution *** note,the optimal 3%CMO/CN sample displayed the highest H_(2)production rate of 8.35 mmol g^(-1)h^(-1),which is 4.6 folds that of pristine *** situ irradiated X-ray photoelectron spectroscopy(XPS)and electron paramagnetic resonance(EPR)characterizations confirmed the S-scheme charge transfer path between CN and CMO,which greatly promoted spatial charge *** functional theory(DFT)calculations together with contact angle tests revealed the reduced activation energies for H_(2)O dissociation and enhanced hydrophilicity of the CMO/*** CMO/CN photocatalysts also presented high stability and fine *** work may provide insights into the combination of defect engineering and heterojunction designing for high-efficiency solar-to-chemical energy conversion.

关键词： S-scheme CoMoO_(4) Carbon nitride Oxygen vacancy Photocatalysis

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Accelerating urban street canyon wind flow predictions with deep learning method

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建筑模拟（英文版） 2025年第4期18卷 923-936页

作者： Wai-Chi Cheng Tzung-May Fu Shenzhen Key Laboratory of Precision Measurement and Early Warning Technology for Urban Environmental Health Risks School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhenGuangdong 518055China Guangdong Provincial Observation and Research Station for Coastal Atmosphere and Climate of the Greater Bay Area School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhenGuangdong 518055China Shenzhen Key Laboratory of Precision Measurement and Early Warning Technology for Urban Environmental Health Risks School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhenGuangdong 518055China Guangdong Provincial Observation and Research Station for Coastal Atmosphere and Climate of the Greater Bay Area School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhenGuangdong 518055China National Center for Applied Mathematics Shenzhen(NCAMS)ShenzhenGuangdong 518055China

Predicting wind flow statistics in urban areas is important for various environmental and engineering ***,building-resolved computational fluid dynamics(CFD)simulations are the most commonly used and reliable methods to simulate urban wind flows but they are time-consuming which limits their use in real ***,our objective is to develop a surrogate model based on deep learning(DL),which can be used as a faster alternative to CFD methods for urban *** proposed model hypothesis is that the spatial distributions of the time-averaged flow quantities within urban canopies are highly correlated to the local urban *** test this hypothesis,we developed a model to predict the flow in uniform urban street canyons by constructing a geometry reading filter to convert local urban geometry information around the targeted locations into a numerical array as DL model inputs.A standard feedforward DL model is then trained using large-eddy simulation(LES)results to predict the mean wind and turbulence within uniform street *** results show that the model can give fast and accurate predictions compared to LES *** prediction errors are found to range from 5.8%to 36%,and the normalized mean bias magnitudes range from 6.6×10-3 to 1.6×10-1 for the different flow *** DL model is also found to predict the flow patterns reasonably well,consistent with experimental data similar to the results of coarse-resolution *** model has the potential to be further developed into a robust and practical tool for fast urban flow predictions.

关键词： deep learning geometry reading filter large-eddy simulation neural network model urban wind flow prediction urban street canyons

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Peracetic acid catalytic activation using Co_(3)O_(4) nanocluster decorated graphitic carbon nitride for cefapirin degradation in water

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science China(Technological sciences) 2024年第10期67卷 3103-3115页

作者： YIN ShiMei GAO YiXuan CHEN Long LI Fan LIU XiaoNa QI Fei LIU Wen Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China Key Laboratory of Water and Sediment Sciences(Ministry of Education) College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China School of Environmental Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems Peking UniversityBeijing 100871China Beijing National Laboratory for Molecular Sciences Peking UniversityBeijing 100871China

This study innovated cobalt-based catalytic nanocomposites(CCNs)for the heterogeneous activation of peracetic acid(PAA),a green and efficient advanced oxidation process for removing antibiotics from *** Co_(3)O_(4) catalysts exhibit limited activity due to stable electronic *** overcome this,CCNs were synthesized using a one-step condensation method,incorporating a size control strategy that anchors Co_(3)O_(4) nanoclusters within 4‒5 nm onto six-fold cavity of g-C3N4,simultaneously modifying the coordination environment of *** alteration significantly enhances the adsorption energy of PAA and catalytic activity compared to commercial Co_(3)O_(4).The improved performance of CCN2,in particular,is attributed to a shift in the cobalt d band center towards the Fermi level,facilitating electron delocalization and transfer,enhancing Co‒O bonding,and accelerating PAA ***2’s superior activity,with a cefapirin(CFP)degradation kinetic rate constant(k1=0.760 min^(−1))~11 times that of PAA direct oxidation(k1=0.070 min^(−1))and~5 times that of commercial Co_(3)O_(4)/PAA system(k1=0.164 min^(−1)),is due to its ability to generate dominant reactive species for antibiotic degradation,including alkoxy radicals(CH3C(=O)OO•),high valence metal(Co^(Ⅳ)(=O)^(2+)),and singlet oxygen(^(1)O_(2)),with the latter two being crucial for the degradation *** degradation of CFP involved three mechanisms,including direct oxidation by PAA,decarboxylation,and open-ring reactions at nitrogen *** research provides insights into developing high-activity catalysts for efficient PAA activation and antibiotic removal,leveraging the strategy of shifting the transition metal d band center.

关键词： peracetic acid Co_(3)O_(4)nanocluster high valence metal singlet oxygen cefapirin

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