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Experimental study on the accumulative effect of multiple pulses on acceleration sensor

Defence technology（防务技术） 2022年第5期18卷 772-780页

作者： Jie Shen Yong He Xu-chao Pan Zhong Fang Hong Chen Wan-li Zhang Yun-lei Shi School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing210094China China Electronic Produce Reliability and Environmental Testing Research Institute Guangzhou510610China

Intentional electromagnetic interference is a serious threat to the safety of electronic devices. Multiple electromagnetic pulses will be coupled and transmitted to electronic devices through the *** effects are generated, which make it easier for damage to occur in the electronic devices. In this article, the working principle of micro-silicon acceleration sensors is introduced. The accumulative effects of multiple pulses on acceleration sensors is studied by a large number of injection *** accumulation trends of multiple pulses with different pulse numbers and intervals are analyzed. The damaged structures inside abnormal sensor amplifiers were observed via optical microscopy and scanning electron microscopy. The experimental results show that the accumulative effect is strengthened with increased pulse number or decreased pulse interval, and the threshold voltage for multiple pulses on the acceleration sensor decreases. The threshold voltage for a single pulse is 321.57 V. When the pulse interval is 1 μs and the pulse number is 5, the threshold voltage for multiple pulses is 163.42 V,which is reduced by 49.12% compared with a single pulse. These results provide a reference for the damage design of electromagnetic pulse weapons.

关键词： Accumulative effect Multiple pulses Injection experiment Acceleration sensor Threshold voltage

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Recent progress of two-dimensional metal-base catalysts in urea oxidation reaction

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Rare Metals 2024年第8期43卷 3607-3633页

作者： Qi-Xiang Huang Fang Wang Yong Liu Bi-Ying Zhang Fang-Ya Guo Zhong-Qiu Jia Hao Wang Tian-Xiang Yang Hai-Tao Wu Feng-Zhang Ren Ting-Feng Yi School of Materials Science and Engineering Henan University of Science and TechnologyLuoyang 471000China School of Environmental Engineering and Chemistry Luoyang Institute of Science and TechnologyLuoyang 471023China Henan Province International Joint Laboratory of Materials for Solar Energy Conversion and Lithium Sodium Based Battery Luoyang 471023China School of Chemistry and Life Sciences Suzhou University of Science and TechnologySuzhou 215009China School of Materials Science and Engineering Northeastern UniversityShenyang110819China

Urea oxidation reaction(UOR)is an auxiliary water electrolysis hydrogen production technology developed in recent years to replace oxygen evolution reaction and reduce energy consumption,which can produce hydrogen more efficiently by low theoretical potential,reduce the average cost of electrochemical hydrogen production,and is a frontier research hotspot for renewable hydrogen ***-dimensional(2D)nanomaterials as electrocatalysts have many favorable potential,such as it can effectively reduce the resistivity of materials and increase the specific surface area with *** paper reviews the application of 2D materials in UOR in alkaline *** a cross-sectional comparison of various material performance data including overpotential,Tafel slope,electrochemical active surface area(ECSA)and it stability test was conducted,which could illustrate the differences between materials composed of different *** addition,the main challenges hindering the progress of research on 2D materials in urea electrocatalysis processes and promising materials in this field in future are summarized and *** is believed that this review will contribute to designing and analyzing highperformance 2D urea electrocatalysts for water splitting.

关键词： Water splitting Urea oxidation reaction Two-dimensional Transition metal compounds Noble/non-noble metals

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Photoelectrochemical seawater oxidation with metal oxide materials:Challenges and opportunities

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Journal of Energy Chemistry 2024年第10期97卷 767-782,I0016页

作者： Miao Kan Hangyu Hu Weijie Zhuang Meng Tao Shiqun Wu Jinlong Zhang Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Shanghai Engineering Research Center for Multimedia Environmental Catalysis and Resource Utilization East China University of Science and TechnologyShanghai 200237 China

Photocatalytic water oxidation is a crucial counter-electrode reaction in the process of photoelectrochemical energy *** its importance,challenges remain in effectively and sustainably converting water to oxygen,particularly with readily available and inexpensive electrolyte solutions such as *** metal oxide materials have demonstrated their advantages in promoting efficiency by reducing overpotential and improving light utilization,stability remains limited by corrosion in multicomponent *** this paper,we reviewed the relationship between four basic concepts including photoelectrochemistry,metal oxide,water oxidation and seawater to better understand the challenges and opportunities in photoelectrochemical(PEC)seawater *** overcome these challenges,the advances in material design,interfacial modification,local environment control and reactor design have been further reviewed to benefit the industrial PEC seawater ***,we demonstrate engineered layered metal oxide electrodes and cell structures that enable powerful and stable seawater *** also outline and advise on the future direction in this area.

关键词： Photoelectrochemistry Anode Water oxidation Metal oxide Seawater Stability

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Boosted urea electro-oxidation over Ni_(3)N-based nanocomposite via systematic regulation tactic

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Journal of Energy Chemistry 2023年第12期87卷 479-490,I0013页

作者： Ping Li Yuqi Huang Quhua Huang Wenqin Li Shuanghong Tian School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou 510275GuangdongChina Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Guangzhou 510275GuangdongChina

Exploiting high-efficiency Ni-based materials for electrocatalytic urea oxidation reaction(UOR) is critical for urea-related *** catalytic site density,intrinsic activity,charge transfer,and mass diffusion determine overall electrocatalytic *** modulation over the above four factors promises advanced electrocatalysis,yet *** we propose a systematic regulation tactic over composition and geometric structure,constructing a nanocomposite comprising Mn doped Ni_(3)N nanoparticles anchored on reduced graphene oxide(rGO/Mn-Ni_(3)N),achieving elegant integration of four design principles into one,thereby eminently boosting ***,Mn doping in Ni_(3)N can modulate electronic state to induce intrinsic activity *** metallic Mn-Ni_(3)N with rGO to engineer hierarchical architecture not only promotes charge transfer,but also enriches active site ***,improved hydrophilicity could impart better electrolyte penetration and gas ***,such system-optimized rGO/Mn-Ni_(3)N demonstrates state-of-the-art-level UOR *** work offers a novel paradigm to create advanced catalysts via systematic and integrated modulation.

关键词： Ni_(3)N Geometric structure Composition engineering Systematic regulation Urea oxidation

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Spatiotemporal distribution and diversity of microplastics in the sediment of beaches in Xiamen City,China

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Journal of Oceanology and Limnology 2025年第2期43卷 396-405页

作者： Fengrun WU Xueyan LI Chengyi ZHANG Tao WANG School of Environmental Science and Engineering Xiamen University of TechnologyXiamen 361024China State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200241China

Coastal ecosystems are plagued by high levels of microplastic *** baseline surveys is crucial to comprehend the distribution and influencing factors of this *** present study investigates the spatiotemporal variation and diversity of microplastic on the coastal beaches in Xiamen City,China,considering the combined effects of seasons,human activities,and physicochemical properties of *** is detected that the abundance of microplastics in Xiamen beaches was 0.271±0.01 items/*** abundance of microplastics in dry season was significantly higher than in rainy *** terms of spatial variation,the beaches that attracted a larger number of tourists exhibited significantly higher microplastic *** temporal pattern of microplastic distribution on different beaches varied greatly due to region-specific human activities(e.g.,mangrove restoration project)and sedimentary properties(e.g.,bulk density).When the assemblage of microplastics in the coastal area was viewed as a biological community,the Shannon-Wiener index and Pielou's index were higher in rainy season and in the beaches with high intensity of tourist activities,which suggests that the human activities and the surface runoff may contribute to the diversity of microplastics on coastal *** investigations are encouraged to combine controlled experiments and long-term monitoring at multiple scales to elucidate the underlying mechanisms and factors associated with microplastic pollution in coastal zone.

关键词： microplastic pollution coastal beaches spatiotemporal variation diversity

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Developing silicon-based photocathodes for CO_(2) conversion

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science China Chemistry 2024年第6期67卷 1904-1921页

作者： Weijie Zhuang Miao Kan Tao Meng Jinlong Zhang Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China Shanghai Engineering Research Center for Multimedia Environmental Catalysis and Resource Utilization East China University of Science and TechnologyShanghai200237China

Photoelectrochemical(PEC)conversion of CO_(2) presents a promising avenue for solar-driven chemical fuel production,with silicon emerging as a cost-effective and high-light-absorbing material pivotal to this *** at exploring opportunities for industrializing PEC CO_(2) reduction(PEC-CO_(2)R)by minimizing reaction energy consumption,enhancing reaction efficiency and selectivity,this review summarizes recent advancements in developing Si-based photocathodes for PEC-CO_(2)*** outlines the fundamental principles,advantages,and limitations of Si photocathodes with key performance *** on this understanding,the strategies to enhance the performance of the PEC-CO_(2)R system,including light absorption,charge separation,and catalytic reactions are categorized as the interfacial modification,active site decoration,and protective layer *** design ideas of this advantageous three-layer structure in promoting the efficiency,stability,and selectivity have been ***,this review scrutinizes the influence of the photocathodic chemical *** review consolidates the mechanism insights and notable breakthroughs of various fuel generation processes within Si-based PEC-CO_(2)R *** this wealth of information offers an up-to-date perspective on the dynamic developments in silicon-based PEC-CO_(2) conversion and underscores the promising pathways toward the sustainable fuel synthesis from pollutant CO_(2).

关键词： photoelectrochemistry solar fuels silicon photocathodes carbon dioxide reduction microenvironment

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Unraveling the skatole biodegradation process in an enrichment consortium using integrated omics and culture-dependent strategies

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Journal of environmental sciences 2023年第5期127卷 688-699页

作者： Qiao Ma Nan Meng Jiancheng Su Yujie Li Jiazheng Gu Yidi Wang Jingwei Wang Yuanyuan Qu Zelong Zhao Yeqing Sun Institute of Environmental Systems Biology College of Environmental Science and EngineeringDalian Maritime UniversityDalian 116026China Liaoning Key Lab of Germplasm Improvement and Fine Seed Breeding of Marine Aquatic Animals Liaoning Ocean and Fisheries Science Research InstituteDalian 116023China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

3-Methylindole(skatole)is regarded as one of the most offensive compounds in odor *** is feasible for skatole removal but the functional species and genes responsible for skatole degradation remain *** this study,an efficient aerobic skatole-degrading consortium was *** and Pseudomonas were identified as the two major and active populations by integrated metagenomic and metatranscriptomic *** analyses indicated that the skatole downstream degradation wasmainly via the catechol pathway,and upstream degradation was likely catalyzed by the aromatic ring-hydroxylating oxygenase and flavin *** binning and gene analyses indicated that Pseudomonas,Pseudoclavibacter,and Raineyella should cooperate with Rhodococcus for the skatole degradation ***,a pure strain Rhodococcus ***1 was successfully obtained which could utilize skatole as the sole carbon *** genome sequencing showed that strain DMU1 was the predominant population in the *** crude enzyme and RT-qPCR assays indicated that strain DMU1 degraded skatole through the catechol ortho-cleavage ***,our results suggested that synergistic degradation of skatole in the consortium should be performed by diverse bacteria with Rhodococcus as the primary degrader,and the degradation mainly proceeded via the catechol pathway.

关键词： Skatole Biodegradation Bacterial consortium Metagenomics and metatranscriptomics Rhodococcus

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An overview of bioelectrokinetic and bioelectrochemical remediation of petroleum-contaminated soils

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environmental science and Ecotechnology 2023年第4期16卷 117-134页

作者： Jun Lan Fang Wen Yongxiang Ren Guangli Liu Yi Jiang Zimeng Wang Xiuping Zhu Shaanxi Key Laboratory of Environmental Engineering School of Environmental and Municipal EngineeringXi'an University of Architecture and TechnologyXi'an710055China Xinjiang Academy of Environmental Protection Science Urumqi830011China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology School of Environmental Science and EngineeringSun Yat-sen UniversityGuangzhou510006China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityKowloonHong KongChina Department of Environmental Science and Engineering Fudan UniversityShanghai200433China

The global problem of petroleum contamination in soils seriously threatens environmental safety and human *** studies have successfully demonstrated the feasibility of bioelectrokinetic and bioelectrochemical remediation of petroleum-contaminated soils due to their easy implementation,environmental benignity,and enhanced removal efficiency compared to *** paper reviewed recent progress and development associated with bioelectrokinetic and bioelectrochemical remediation of petroleum-contaminated *** working principles,removal efficiencies,affecting factors,and constraints of the two technologies were thoroughly summarized and *** potentials,challenges,and future perspectives were also deliberated to shed light on how to overcome the barriers and realize widespread implementation on large scales of these two technologies.

关键词： Petroleum hydrocarbons and derivatives Soil contamination Bioelectrokinetic remediation Bioelectrochemical remediation Microbial fuel cell

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FeNi alloys incorporated N-doped carbon nanotubes as efficient bifunctional electrocatalyst with phase-dependent activity for oxygen and hydrogen evolution reactions

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Journal of Materials science & technology 2024年第34期201卷 157-165页

作者： Yu Zhang Boyuan Chen Yanxin Qiao Yurong Duan Xinyu Qi Siqi He Hu Zhou Junkang Chen Aihua Yuan Shunli Zheng School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China College&Hospital of Stomatology Key Laboratory of Oral Diseases Research of Anhui ProvinceAnhui Medical UniversityHefei 230032China College of Materials Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China Instrumental Analysis Center of Jiangsu University of Science and Technology Zhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Electrochemical oxygen evolution reaction(OER)and hydrogen evolution reaction(HER)are two impor-tant half-cell reactions for overall water *** rational design and fabrication of efficient electro-catalysts involving nonprecious-metals and carbon matrix is highly ***,a series of N-doped carbon nanotubes encapsulated FeNi alloy nanoparticles(FeNi@NCNTs)are synthesized via a simple py-rolysis treatment of Fe-doped Ni(OH)_(2)precursors under the assistance of dicyandiamine *** re-sults reveal that the Fe/Ni ratio has an obvious influence on the morphology and phase composition of FeNi@NCNTs series,thus affecting the electrocatalytic *** highest electrocatalytic activity is achieved for the Fe1 Ni4@NCNTs product with a Fe/Ni molar ratio of 1:4,which delivers low overpoten-tials of 278 and 279 mV for OER and HER at 10 mA cm^(−2)in 1.0 mol/L KOH,*** intriguing electrocatalytic performance is mainly ascribed to the advantageous integration of rambutan-like hier-archically porous structure and composition optimization,significantly facilitating the fast mass/charge transfer as well as promoting the adsorption ability for *** present method may open a facile avenue for developing cost-effective,high-activity,and stable electrocatalysts for the application of overall water splitting.

关键词： Electrocatalysts FeNi alloy Carbon nanotubes Oxygen evolution reaction Hydrogen evolution reaction

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All-inorganic TiO_(2)/Cs_(2)AgBiBr_(6) composite as highly efficient photocatalyst under visible light irradiation

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Frontiers of Chemical science and engineering 2023年第12期17卷 1925-1936页

作者： Jianzhong Ma Lu Wen Qianqian Fan Siying Wei Xueyun Hu Fan Yang College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and TechnologyXi’an 710021China College of Chemistry and Chemical Engineering Shaanxi University of Science and TechnologyXi’an 710021China Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry(Ministry of Education) Shaanxi University of Science and TechnologyXi’an 710021China Xi’an Key Laboratory of Green Chemicals and Functional Materials Shaanxi University of Science and TechnologyXi’an 710021China College of Environmental Science and Engineering Shaanxi University of Science and TechnologyXi’an 710021China

In recent years, limited photocatalysis efficiency and wide band gap have hindered the application of TiO_(2) in the field of photocatalysis. A leading star in photocatalysis has been revealed as lead-free Cs_(2)AgBiBr_(6) double halide perovskite nanocrystals, owing to its strong visible light absorption and tunable band gap. In this work, this photocatalytic process was facilitated by a unique TiO_(2)/Cs_(2)AgBiBr_(6) composite, which was identified as an S-cheme heterojunction. TiO_(2)/Cs_(2)AgBiBr_(6) composite was investigated for its structure and photocatalytic behavior. The results showed that when the perovskite dosage is 40%, the photocatalytic rate of TiO_(2) could be boosted to 0.1369 min^(-1). This paper discusses and proposes the band gap matching, carrier separation, and photocatalytic mechanism of TiO_(2)/Cs_(2)AgBiBr_(6) composites, which will facilitate the generation of new ideas for improving TiO_(2)’s photocatalytic performance.

关键词： Cs_(2)AgBiBr_(6)nanocrystals visible-light photocatalyst Cs_(2)AgBiBr_(6) TiO_(2)heterojunction

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