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Crystallinity-defect matching relationship of g-C_(3)N_(4): Experimental and theoretical perspectives

Green Energy & Environment 2024年第4期9卷 623-658页

作者： Yuhan Li Ziteng Ren Zhengjiang He Ping Ouyang Youyu Duan Wendong Zhang Kangle Lv Fan Dong Engineering Research Center for Waste Oil Recovery Technology and Equipment Ministry of EducationChongqing Key Laboratory of Catalysis and New Environmental MaterialsChongqing Technology and Business UniversityChongqing400067China Nanchang Institute of Technology Nanchang33044China Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission College of Resources and Environmental ScienceSouth-Central Minzu UniversityWuhan430074China College of Physics and Center of Quantum Materials and Devices Chongqing UniversityChongqing401331China Chongqing Key Laboratory of Green Synthesis and Application Chongqing Normal UniversityChongqing401331China

Good crystallinity can reduce the charge recombination centers caused by defects,whilst structures with strong polycondensation have high charge mobility,leading to more charge transfer to the material surface for *** effort has been put into the preparation of a highly efficient g-C_(3)N_(4) with defects to improve its application potential under the premise in high ***,this review paper emphasizes the importance to balance the defect and crystallinity of g-C_(3)N_(4).In addition,detailed discussion on the relationship between defects and activity of g-C_(3)N_(4) was carried out based on its applications in environmental purification(e.g.,VOCs oxidation,NO_(x) oxidation,H_(2)O_(2) evolution,sterilization,pesticide oxidation)and energy conversion(H_(2) evolution,N_(2) fixation and CO_(2) reduction).Lastly,the challenge in developing more efficient defective g-C_(3)N_(4) photocatalytic materials is summarized.

关键词： Photocatalysis Defect G-C_(3)N_(4) Crystallinity Application

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Enhancing hydrogen evolution reaction performance of transition metal doped two-dimensional electride Ca_(2)N

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Chinese Chemical Letters 2023年第6期34卷 487-491页

作者： Baoyu Liu Ziqiang Chen Rui Xiong Xuhui Yang Yinggan Zhang Teng Xie Cuilian Wen Baisheng Sa Multiscale Computational Materials Facility and Key Laboratory of Eco-materials Advanced TechnologyCollege of Materials Science and EngineeringFuzhou UniversityFuzhou 350100China College of Environmental Science and Engineering Fujian Key Laboratory of Pollution Control&Resource ReuseFujian Normal UniversityFuzhou 350007China College of Materials Fujian Provincial Key Laboratory of Theoretical and Computational ChemistryXiamen UniversityXiamen 361005China

Two-dimensional electride Ca_(2)N has strong electron transfer ability and low work function,which is a potential candidate for hydrogen evolution reaction(HER)*** this work,based on density functional theory calculations,we adopt two strategies to improve the HER catalytic activity of Ca_(2)N monolayer:introducing Ca or N vacancy and doping transition metal atoms(TM,refers to Ti,V,Cr,Mn,Fe,Zr,Nb,Mo,Ru,Hf,Ta and W).Interestingly,the Gibbs free energyΔG_(H*)of Ca_(2)N monolayer after introducing N vacancy is reduced to-0.146 e V,showing good HER catalytic *** is highlighted that,the HER catalytic activity of Ca_(2)N monolayer can be further enhanced with TM doping,the Gibbs free energyΔG_(H*)of single Mo and double Mn doped Ca_(2)N are predicted to be 0.119 and 0.139 e V,*** present results will provide good theoretical guidance for the HER catalysis applications of two-dimensional electride Ca_(2)N monolayer.

关键词： Two-dimensional electride Ca_(2)N Density functional theory calculations Hydrogen evolution reaction Transition metal doping

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A Data Fusion Method for Pipeline Defect Depth Quantitative Evaluation in Gas Gathering Station

A Data Fusion Method for Pipeline Defect Depth Quantitative ...

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第35届中国过程控制会议

作者： Ye Zheng Jie Wang Baiyu Zhu Minglv Jin Zheng Liu Pingjie Huang State Key Laboratory of Industrial Control Technology College of Control Science and EngineeringZhejiang University School of Information Science and Engineering Zhejiang Sci-Tech University

This paper presents a quantitative evaluation method based on Dempster-Shafer(D-S) evidence theory and Gradient Boosting Regression Tree(GBRT) for defects in gas gathering station. The detection experiments were conducted using pulsed eddy current and ultrasound for defects with different depth. Through the experiments, an optimal feature selection method based on D-S evidence is proposed, which combines the Fisher Score and Pearson correlation coefficient to select the optimal features. The optimal features are then fed into GBRT to predict the depth of defects. The optimal feature selection method and GBRT are compared with other method. The results show that the proposed method in this paper selects better feature and has better performance in the quantitative evaluation of defect depth.

关键词： gas gathering station feature selection defect detection composite detection

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The regulating strategy of hierarchical structure and acidity in zeolites and application of gas adsorption: A review

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Chinese Chemical Letters 2024年第11期35卷 214-225页

作者： Jie Ma Jianxiang Wang Jianhua Yuan Xiao Liu Yun Yang Fei Yu Research Center for Environmental Functional Materials State Key Laboratory of Pollution Control and Resource ReuseCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China School of Civil Engineering Kashi UniversityKashi 844000China Shanghai Baoye Engineering Technology Ltd. Shanghai 200941China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai 201306China

Gas adsorption remains an attractive area of *** hierarchical structure can reduce diffusion limitations and facilitate molecular transport,while acid sites can be used as adsorption *** make zeolites widely used in the field of gas *** to obtain zeolite adsorbents with better adsorption properties by modulating the hierarchical structure and acid sites is a pressing issue *** review highlights the strategies to modulate the hierarchical structure as well as the acid sites;and then explains how these strategies are *** mechanism of zeolite adsorption on gases is then described in terms of these two ***,the adsorption properties of zeolites for certain gases under specific conditions are *** outlook of zeolite hierarchical structures and acid site modulation strategies is given.

关键词： Zeolite Regulation strategy Hierarchical structure Acid sites Gas adsorption

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A Hybrid SVM Based Real-Time Attack Classification Method for Cyber Network 42

A Hybrid SVM Based Real-Time Attack Classification Method fo...

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42nd Chinese control Conference, CCC 2023

作者： Qin, Xin Jin, Feng Han, Zhongyang Zhao, Jun Wang, Wei Dalian University of Technology Key Laboratory of Intelligent Control and Optimization for Industrial Equipment Ministry of Education Dalian116024 China School of Control Science and Engineering Dalian University of Technology Dalian116024 China

ISBN: (纸本)9789887581543

The cyber network attacks on the Internet have the characteristics of diversity, uncertainty and real-time. This paper proposes a hybrid support vector machine (HSVM)-based classification method for real-time cyber network attack detection. In the supervised environment, a one-class classifier is built to divide the unknown attack traffic into 'other classes', and a new extension module is established for the identified unknown attacks, so as to improve the classification accuracy of unknown attacks. Then, an online training algorithm is used to enable the classifier to quickly distinguish cyber network attacks and improve the timeliness of the intrusion detection process. To verify the effectiveness of the proposed method is employed, three classifiers, i.e., the random forest, the support vector machine and the multi-layer perceptron are employed for comparative experiments based on the public data set KDDCup99. Results show that the proposed method has the advantages of higher classification accuracy and less time consumption. © 2023 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Intrusion detection

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Impact of a new pesticide on rhizosphere microbes and plant health:Case study of Y17991 against sharp eyespot in wheat

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Journal of Integrative Agriculture 2025年第2期24卷 769-785页

作者： Xiangxia Yang Tingting Chen Libo Xiang Limin Liu Mi Wei School of Agriculture Shenzhen Campus of Sun Yat-Sen UniversityShenzhen 518107China Institute of Plant Protection and Soil Fertilizer Hubei Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management for Crops in the Central RegionMinistry of Agriculture and Rural Affairs/Hubei Key Laboratory of Crop Pest and Weed ControlWuhan 430079China Agricultural Technology Service Center of Yuxin Town Tianmen 433000China Key Laboratory for Quality Control of Characteristic Fruits and Vegetables of Hubei Province College of Life Science and TechnologyHubei Engineering UniversityXiaogan 432000China

Sharp eyespot(Rhizoctonia cerealis)is a widespread soil-borne fungal disease that poses a severe threat to wheat health,and it is one of the main obstacles to achieving stable and high-quality wheat yields in *** collaborative team has developed a novel,efficient,and low-toxicity fungicide named Y17991(N-(2-(2,4-bis-(trifluoromethyl)phenoxy)phenyl)-3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxamide).Preliminary laboratory tests confirmed the significant inhibitory effect of this agent on ***-area field trials also demonstrated its efficacy,with a disease prevention index of 83.52%,which is 1.97%greater than that of the widely used thifluzamide,and it significantly increased the wheat ***,this study explored the impacts of Y17991 on the structure and function of the microbial community in wheat rhizosphere *** communities were more strongly affected than fungal communities.Y17991 significantly modulated key amino acid metabolic pathways and certain biosynthetic processes in diseased wheat rhizospheres,and it also enhanced certain biosynthetic pathways and metabolic activities in healthy wheat ***,the application of Y17991 regulated rhizosphere metabolites,thus exerting significant control over the microbial *** identified 15 microbial strains potentially involved in the prevention and treatment of ***,and Y17991 treatment promoted the growth of Pedobacter and Bacillus *** strains not only aid in plant growth but they also have the potential for disease *** summary,Y17991 application at a reasonable dose does not cause significant disruption to nontarget rhizosphere microbial *** future studies,we will continue to investigate the impacts of Y17991 on nonmicrobial components in soil ecosystems,such as protozoa and *** research provides a theoretical basis for the scientific application and promotion of new fungicides and offers a significant refere

关键词： pesticide sharp eyespot rhizosphere microbial community rhizosphere metabolites culturable microorganisms

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Effect of soil-applied fertilizers on arsenic transport and transformation mechanisms in the water-soil-rice system

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Journal of Earth science 2025年

作者： Haotian Yu Ying Jie Feilong Li Ruihua Shang Teng Ma College of Resource and Environmental Engineering， Wuhan University of Science and Technology State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution， China University of Geosciences Fujian Institute of Geological Survey

Arsenic (As) pollution in paddy field appeared around the world， however， the study on the effect of fertilizer on As accumulation in water-soil-rice system remains unknown. This study investigated the effects of organic fertilizer (OF)， inorganic fertilizer (IOF)， and bio-organic fertilizer (BOF) on As transformation in water-soil-rice system under surface water (SW) and high-As groundwater (GW) irrigation conditions through potting experiments. The results indicated that IOF group had the lowest As in rice grain (0.34 mg/kg)， followed closely by BOF (0.36 mg/kg) and OF (0.43 mg/kg) under SW irrigation. Under SW irrigation， the lowest reduction in iron mineral dissolution and the lowest pore water As concentration were observed in the IOF group， which reduced the accumulation in rice grain. The BOF application resulted in the highest As content in the rice root but the transformation in rice was lowest， resulting in the lowest As content in the straw. High-As GW irrigation increased both the total and bioavailable As in the soil， and increased As absorption by rice， causing the As levels in rice grains to exceed the standard (GB2762-2017). According to the values of bioconcentration factor (BCF) and translocation factor (TF)， the IOF helped reduce As accumulation in rice under SW irrigation， whereas the OF effectively reduced As accumulation in rice grain under high-As GW irrigation. This study provides a theoretical basis and technical support for the prevention and control of As contamination of rice.

关键词： arsenic organic fertilizer bio-organic fertilizer inorganic fertilizer

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Synthesis of reusable and portable SERS sandpaper based on liquid-liquid interface self-assembly method for stable and ultrasensitive detection of S-fenvalerate in foods

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Food science and Human Wellness 2025年

作者： Yingfang Zhang Chen Chen Xinyue Wang Xuguang Qiao Ximo Wang Geoffrey I.N.Waterhouse Zhixiang Xu Key Laboratory of Food Processing Technology and Quality Control in Shandong Province， College of Food Science and Engineering， Shandong Agricultural University School of Chemical Sciences， The University of Auckland

Herein， a reusable and portable surface-enhanced Raman spectroscopy （SERS） sandpaper was successfully synthesized for the sensitive detection of S-fenvalerate in foods. Commercial sandpapers were decorated with Ag@SiO2@Au nanoarrays via a liquid-liquid interface self-assembly （LLISA） method. The capacity of sandpaper to float directly on the cyclohexane-water interface allows nanoarrays to be formed directly on it， thereby minimizing stacking issues typically associated with nanoarray assemblies and significantly enhancing the sensitivity of S-fenvalerate detection. Moreover， the SERS sandpaper was reusable and portable due to its strong adhesion of the nanoarrays. Under optimized testing conditions， the developed SERS sandpaper method was capable of detecting S-fenvalerate， demonstrating a strong linear response within a concentration range of 10-7to 103μmol/L， with a LOD of 1.92×10-8μmol/L. The analysis of spiked food samples containing S-fenvalerate using the developed SERS sandpaper afforded excellent recoveries （92.2% - 109.7%）. Additionally， the SERS sandpaper was successfully applied to quantify S-fenvalerate in real food samples， with results consistent with analyses conducted using gas chromatography.

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Single-atom Ag-loaded carbon nitride photocatalysts for efficient degradation of acetaminophen:The role of Ag-atom and O_(2)

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Journal of Environmental sciences 2024年第5期139卷 12-22页

作者： Yi Yuan Wen-Long Wang Zhi-Wei Wang Jin Wang Qian-Yuan Wu Key Laboratory of Microorganism Application and Risk Control of Shenzhen Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental SafetyInstitute of Environment and EcologyShenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Shenzhen Environmental Science and New Energy Technology Engineering Laboratory Tsinghua-Berkeley Shenzhen InstituteShenzhen 518055China College of Materials Science and Engineering Shenzhen UniversityShenzhen 518071China

Carbon nitride has been extensively used as a visible-light photocatalyst,but it has the disadvantages of a low specific surface area,rapid electron-hole recombination,and relatively low light *** this study,single-atom Ag was successfully anchored on ultrathin carbon nitride(UTCN)via thermal polymerization,the catalyst obtained is called *** Ag hardly changed the carbon nitride's layered and porous physical *** exhibited efficient visible-light photocatalytic performances in the degradation of various recalcitrant pollutants,eliminations of 85% were achieved by visible-light irradiation for *** with Ag improved the photocatalytic performance of UTCN by narrowing the forbidden band gap from 2.49 to 2.36 e V and suppressing electron-hole pair *** addition,Ag doping facilitated O_(2) adsorption on UTCN by decreasing the adsorption energy from -0.2 to -2.22 e V and favored the formation of O_(2)^(·-).Electron spin resonance and radical-quenching experiments showed that O_(2)^(·-)was the major reactive species in the degradation of Acetaminophen(paracetamol,APAP).

关键词： Ag single atom Carbon nitride Photocatalysis Visible light Adsorption energy Reactive species

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Polyzwitterionic cross-linked double network hydrogel electrolyte enabling high-stable Zn anode

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Nano Research 2024年第6期17卷 5278-5287页

作者： Mengyu Shi Junlong Zhang Guochuan Tang Ben Wang Sen Wang Xiaoxian Ren Guojie Li Weihua Chen Chuntai Liu Changyu Shen State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China College of Chemistry and Green Catalysis Center Zhengzhou UniversityZhengzhou 450001China Research Institute of Interdisciplinary Science and School of Materials Science and Engineering Dongguan University of TechnologyDongguan 523808China

Zn metal anode suffers from dendrite issues and passive byproducts,which severely plagues the practical application of aqueous Zn metal ***,a polyzwitterionic cross-linked double network hydrogel electrolyte composed of physical crosslinking(hyaluronic acid)and chemical crosslinking(synthetic zwitterionic monomer copolymerized with acrylamide)is introduced to overcome these *** the one hand,highly hydrophilic physical network provides an energy dissipation channel to buffer stress and builds a H_(2)O-poor interface to avoid side *** the other hand,the charged groups(sulfonic and imidazolyl)in chemical crosslinking structure build anion/cation transport channels to boost ions’kinetics migration and regulate the typical solvent structure[Zn(H_(2)O)_(6)]^(2+)to R-SO_(3)^(−)[Zn(H_(2)O)_(4)]^(2+),with uniform electric field distribution and significant resistance to dendrites and parasitic *** on the above functions,the symmetric zinc cell exhibits superior cycle stability for more than 420 h at a high current density of 5 mA·cm^(−2),and Zn||MnO_(2)full cell has a reversible specific capacity of 150 mAh·g^(−1)after 1000 cycles at 2 C with this hydrogel ***,the pouch cell delivers impressive flexibility and cyclability for energy-storage applications.

关键词： Zn anode dendrites parasitic reactions polyzwitterion double network hydrogel electrolyte

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