检索结果-内蒙古大学图书馆

Breaking the Activity-Stability Trade-Off of RuO2 via Metallic Ru Bilateral Regulation for Acidic Oxygen Evolution Reaction

引用

Angewandte Chemie - International Edition 2025年第0期 e202503733页

作者： Lu, Qian Liu, Jinjie Zou, Xiaohong Huang, Birou Wu, Weixing Yin, Jun Liu, Zhao-Qing Wang, Ying Department of Chemistry The Chinese University of Hong Kong Ma Lin building Shatin 999077 N.T. Hong Kong Department of Applied Physics The Hong Kong Polytechnic University Kowloon 999077 N.T. Hong Kong Department of Mechanical Engineering The Hong Kong Polytechnic University Kowloon 999077 N.T. Hong Kong School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Key Laboratory for Clean Energy and Materials Guangzhou University Guangzhou510006 China School of Environmental Science and Technology Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Nanjing University of Information Science and Technology Nanjing210044 China

Developing highly efficient acidic oxygen evolution reaction (OER) electrocatalysts is crucial for proton exchange membrane water electrolyzer. RuO2 electrocatalysts, which followed a kinetically favorable lattice oxygen mechanism, perform a preferable intrinsic activity, but poor stability for acidic OER. Recent work often sacrifices the intrinsic activity of RuO2 to enhance stability. The balance between the activity and stability of RuO2-based catalysts is still overlooked in current research. Here, we report a controlled method to introduce metallic Ru onto RuO2 catalysts to form the Ru4+─O─Ru0 interfacial structure for decreasing the Ru4+ oxidation state and promoting deprotonation kinetics. Metallic Ru can serve as the electron donor to lower the oxidation state of *Vo-RuO42− in Ru/RuO2 for stabilizing the structure of *Vo-RuO42−-Ru/RuO2 to favour the acidic OER stability. Moreover, the deprotonation kinetics via the interfacial oxygen site between Ru4+ and Ru0 is significantly enhanced on Ru/RuO2 catalysts to improve the acidic OER activity. This work offers a unique perspective to balance the acidic OER activity and stability of RuO2. © 2025 The Author(s). Angewandte Chemie International Edition published by Wiley-VCH GmbH.

关键词： Deprotonation

来源：评论

学校读者我要写书评

暂无评论

Impacts of dimethylamine emissions on particle number concentration and cloud condensation nuclei in Beijing

npj Clean Air

引用

npj Clean Air 2025年第1期1卷 1-9页

作者： Zhicheng Feng Lei Jiang Yanjie Qian Jianlin Hu Jianjiong Mao Dongjie Shang Song Guo Min Hu Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment Technology School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing 210044 China State Key Joint Laboratory of Environmental Simulation and Pollution Control College of Environmental Sciences and Engineering Peking University 100871 Beijing China

New particle formation (NPF) is a key source of atmospheric particles and cloud condensation nuclei (CCN). In polluted regions, the nucleation mechanism of sulfuric acid (H2SO4)-dimethylamine (DMA) is thought to play a crucial role in NPF. However, it still remains unclear about the sources of DMA and their contributions to regional particle number concentrations (PNC) and CCN. In this study, we incorporated the H2SO4-DMA nucleation mechanism into the aerosol module in the WRF-Chem model to improve the model’s simulation ability for NPF events. The default 8 size bins covering 39 nm to 10 μm were extended to 12 size bins ranging from 1 nm to 10 μm to better capture the formation and growth of the small particles. The modified model was applied to Beijing and its surrounding areas for an observation episode from March 1 to 18 in 2017. The results show that the revised model significantly improves its capability in simulating the particles number in the smaller size range (<20 nm), reducing the standardized bias from over 58% to 10%. The H2SO4-DMA nucleation mechanism contributes 46–78% of PNC in the surface layer (from the surface to ~300 m) and 22–36% of CCN at 0.5% supersaturation (CCN0.5%). The contributions to PNC and CCN0.5%are notably higher on NPF days than those on non-NPF days. High PNC zones correspond to areas with elevated CCN0.5%, suggesting that the nucleation process leads to increased CCN concentrations, and these regions also exhibit higher levels of H2SO4and DMA. Agricultural and residential activities were identified as the main sources of DMA in the study area. The contribution of residential DMA to PNC is particularly significant in urban Beijing, reaching up to 70%. This study enhances our understanding of how NPF events induced by H2SO4-DMA nucleation affect PNC and CCN in intensive anthropogenic emission regions.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Catalyst–Support Interaction in Polyaniline‑Supported Ni_(3)Fe Oxide to Boost Oxygen Evolution Activities for Rechargeable Zn‑Air Batteries

引用

Nano-Micro Letters 2025年第1期17卷 176-190页

作者： Xiaohong Zou Qian Lu Mingcong Tang Jie Wu Kouer Zhang Wenzhi Li Yunxia Hu Xiaomin Xu Xiao Zhang Zongping Shao Liang An Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and TechnologyNanjing University of Information Science and TechnologyNanjing 210044People’s Republic of China Department of Chemistry The Chinese University of Hong KongMa Lin BuildingShatinHong Kong SAR 999077People’s Republic of China WA School of Mines:Minerals Energy and Chemical Engineering(WASM‑MECE)Curtin UniversityPerthWA 6102Australia Research Institute for Advanced Manufacturing The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China

Catalyst–support interaction plays a crucial role in improving the catalytic activity of oxygen evolution reaction(OER).Here we modulate the catalyst–support interaction in polyaniline-supported Ni_(3)Fe oxide(Ni_(3)Fe oxide/PANI)with a robust hetero-interface,which significantly improves oxygen evolution activities with an overpotential of 270 mV at 10 mA cm^(-2)and specific activity of 2.08 mA cm_(ECSA)^(-2)at overpotential of 300 mV,3.84-fold that of Ni_(3)Fe *** is revealed that the catalyst–support interaction between Ni_(3)Fe oxide and PANI support enhances the Ni–O covalency via the interfacial Ni–N bond,thus promoting the charge and mass transfer on Ni_(3)Fe *** the excellent activity and stability,rechargeable Zn-air batteries with optimum Ni_(3)Fe oxide/PANI are assembled,delivering a low charge voltage of 1.95 V to cycle for 400 h at 10 mA cm^(-2).The regulation of the effect of catalyst–support interaction on catalytic activity provides new possibilities for the future design of highly efficient OER catalysts.

关键词： Catalyst-support interaction Supported catalysts Heterointerface Oxygen evolution reaction Zn-air batteries

来源：评论

学校读者我要写书评

暂无评论

Deciphering the Dominant Components and Functions of Microbial Communities at the Combined Application of Fermentation Tower Composting and Rotting Strip-Stack Composting to Chicken Manure

SSRN

引用

SSRN 2023年

作者： Luo, Qu Wang, Hu Lu, Xiaoqing Wang, Can Chen, Ruiying Cheng, Jianbo He, Tengbing Fu, Tianling College of Resource and Environmental Engineering Guizhou University Guiyang550025 China Guizhou Engineering Laboratory of Mountain Livestock and Poultry Farming Pollution Control and Resource Technology Institute of New Rural Development Guizhou University Guiyang550025 China Guizhou Chuyang Ecological Environmental Protection Technology Co. Ltd. Guizhou550003 China Lijiang Agricultural Environmental Protection Monitoring Station Yunnan Lijiang674100 China

Chicken manure is the most important source of organic fertilizer in China. However, there is limited information on the microbial degradation of organic matter in fermentation tower (FT) and subsequent rotting strip-stack compost (STS). This study investigates the major components and metabolic functions of the microbial community of chicken manure in the combined application of FT and STS. The result showed that Bacillus_aidingensis , Dietzia_cinnamea, Corynebacterium_urealyticum and Mesorhizobium_sp._UASWS1009 were the dominant species in fermenter discharge (FD). The predominant strains in the surface samples (SS) of the rotting strip stacks were Nocardiopsis_salina and Ruania_albidiflava. Desmospora_sp._8437 and Nesterenkonia_sp._NP1 in Strip Inner Sample (SI). Oceanobacillus_massiliensis and Virgibacillus_alimentarius was the dominant species in FT-STS. Functional microorganisms in FT-STS are different in degrading organic matter. Carbohydrate and amino acid metabolism were the main functions of the FT-STS bacterial community, while the gene abundance of carbohydrate-active enzymes was applied to further validate the dominant function of the microbial community. © 2023, The Authors. All rights reserved.

关键词： Fermentation

来源：评论

学校读者我要写书评

暂无评论

Label-Free Photocatalytic Electrochemical Biosensor for Detection of Uranyl Ions in Water

SSRN

引用

SSRN 2023年

作者： Xiang, Mei Chen, Qiulian Zhu, Guonian Chen, Zhaoxia Li, Hailiang Hou, Xiaolin Wu, Jialun Xu, Shuxia College of Earth Sciences Chengdu University of Technology Sichuan Chengdu610059 China College of Ecology and Environment Chengdu University of Technology Sichuan Chengdu610059 China College of Material and Chemistry & Chemical Engineering Chengdu University of Technology Sichuan Chengdu610059 China Chengdu Ecological and Environmental Monitoring Center of Sichuan Province Sichuan Chengdu610066 China State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution Chengdu University of Technology Sichuan Chengdu610059 China

A label-free and DNAzyme-based photocatalytic electrochemical biosensor was developed for the detection of uranyl ions (UO22+) in water. In this sensing platform, the SYBR Green (SG) molecules that were embedded in double-stranded DNA (dsDNA), and the dsDNA was cleaved via singlet oxygen (1O2) during photosensitization, causing a significantly declined in the impedance signal of [Fe (CN)6]3-/4-. In the presence of UO22+, the substrate strand was cleaved by the target UO22+, releasing the SG molecule from the dsDNA, while its photosensitive activity was turned off. Therefore, UO22+ can be detected based on the change of [Fe (CN)6]3-/4- electrochemical signals. Such a sensing strategy allowed the detection of UO22+ in the concentration range of 1 to 1000 nM with a detection limit of 0.13 nM. The proposed sensor has been successfully applied to the detection of UO22+ in actual water samples, with recoveries ranging from 87% to 103%. The method, which combines photocatalysis with an electrochemical biosensor, significantly improved the sensitivity of UO22+ detection without the need for labeling and additional signal amplification steps, and is a promising strategy for on-site and real-time monitoring of UO22+ in environmental water samples. © 2023, The Authors. All rights reserved.

关键词： Molecules

来源：评论

学校读者我要写书评

暂无评论

Comparison of Ozone and PM2.5 Concentrations over Urban,Suburban,and Background Sites in China

引用

Advances in Atmospheric Sciences 2020年第12期37卷 1297-1309,I0001-I0004页

作者： Lan GAO Xu YUE Xiaoyan MENG Li DU Yadong LEI Chenguang TIAN Liang QIU Climate Change Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environment Science and EngineeringNanjing University of Information Science&TechnologyNanjing 210044China China National Environmental Monitoring Center Beijing 100012China School of Atmospheric Sciences Chengdu University of Information and TechnologyChengdu 610225China

Surface ozone(O3)and fine particulate matter(PM2.5)are dominant air pollutants in *** of these pollutants can show significant differences between urban and nonurban ***,such contrast has never been explored on the country *** study investigates the spatiotemporal characteristics of urban-to-suburban and urban-tobackground difference for O3(Δ[O3])and PM2.5(Δ[PM2.5])concentrations in China using monitoring data from 1171 urban,110 suburban,and 15 background sites built by the China National Environmental monitoring Center(CNEMC).On the annual mean basis,the urban-to-suburbanΔ[O3]is−3.7 ppbv in Beijing-Tianjin-Hebei,1.0 ppbv in the Yangtze River Delta,−3.5 ppbv in the Pearl River Delta,and−3.8 ppbv in the Sichuan *** the contrary,the urban-to-suburbanΔ[PM2.5]is 15.8,−0.3,3.5 and 2.4μg m^−3 in those areas,*** urban-to-suburban contrast is more significant in winter for bothΔ[O3]andΔ[PM2.5].In eastern China,urban-to-background differences are also moderate during summer,with−5.1 to 6.8 ppbv forΔ[O3]and−0.1 to 22.5μg m^−3 forΔ[PM2.5].However,such contrasts are much larger in winter,with−22.2 to 5.5 ppbv forΔ[O3]and 3.1 to 82.3μg m^−3 forΔ[PM2.5].Since the urban region accounts for only 2%of the whole country’s area,the urban-dominant air quality data from the CNEMC network may overestimate winter[PM2.5]but underestimate winter[O3]over the vast domain of *** study suggests that the CNEMC monitoring data should be used with caution for evaluating chemical models and assessing ecosystem health,which require more data outside urban areas.

关键词： ozone PM2.5 urban suburban background

来源：评论

学校读者我要写书评

暂无评论

Drivers of PM2.5-O3 co-pollution:from the perspective of reactive nitrogen conversion pathways in atmospheric nitrogen cycling

引用

Science Bulletin 2022年第18期67卷 1833-1836页

作者： Feng Wang Weichao Wang Zhenyu Wang Zhongcheng Zhang Yinchang Feng Armistead G.Russell Guoliang Shi State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control Tianjin Key Laboratory of Urban Transport Emission ResearchCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China China Meteorological Administration-Nankai University(CMA-NKU)Cooperative Laboratory for Atmospheric Environment-Health Research College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Department of Electronics and Tianjin Key Laboratory of Photo-Electronic Thin Film Device and Technology Nankai UniversityTianjin 300071China School of Civil and Environmental Engineering Georgia Institute of TechnologyAtlanta GA 30332-0512USA

Fine particulate matter(PM)and ozone(O),two globally signifcant air pollutants,have exerted substantial adverse impacts on climate and human health[1].From 2013 to 2020,China has achieved a signifcant decline of PMlevels,though O3pollution has deteriorated over time[2].PM-Oco-pollution includes not only both high levels of PMand O,but also high PMor Oeven when the other remain ***,the coordinated control of PMand Oshould not only focus on reducing high concentrations of PMand Osimultaneously.

关键词：活性氮转化途径 PM 驱动因素

来源：评论

学校读者我要写书评

暂无评论

An Array of Femtoliter Wells for Sensitive Detection of Copper Using Click Chemistry

SSRN

引用

SSRN 2023年

作者： Ge, Chenchen Chen, Xiong Wang, Dou College of Health Science and Environmental Engineering Shenzhen Technology University 3002 Lantian Road Pingshan District Guangdong Shenzhen518118 China The Key Laboratory of Environmental Pollution Monitoring and Disease Control Ministry of Education School of Public Health Guizhou Medical University Guizhou Guiyang550025 China Shenzhen Key Laboratory of Smart Healthcare Engineering Department of Biomedical Engineering Southern University of Science and Technology No. 1088 Xueyuan Rd. Xili Nanshan District Guangdong Shenzhen518055 China

Sensitive detection of copper ion (Cu2+), which is of great importance for environmental pollution and human health, is crucial. In this study, we present a highly sensitive method for measuring Cu2+ in an array of femtoliter wells. In brief, magnetic beads (MBs) modified with alkyne groups were bound to the azide groups of biotin-PEG3-azide (bio-PEG-N3) via Cu+-catalyzed click chemistry. Cu+ in the click chemistry reaction was generated by reducing Cu2+ with sodium ascorbate. Following the ligation, the surface of the MBs was modified with biotin, whichcould be labeled with streptavidin-β-galactosidase (SβG). The MBs complex was then suspended in β-galactosidase substrate fluorescein-di-β-D-galactopyranoside (FDG), and loaded into the array of femtoliter wells. The MBs sank into the wells due to gravity, and the resulting fluorescent product, generated from the reaction between SβG on the surface of the MBs and FDG, was confined within the wells. The number of fluorescent wells increased with higher Cu2+ concentrations. The bright-field and fluorescent images of the wells were acquired using an inverted fluorescent microscope. The detection limit of this assay for Cu2+ was 1 nM without signal amplification, which was 103 times lower than that of traditional fluorescence detection assays. © 2023, The Authors. All rights reserved.

关键词： Microfluidic chips

来源：评论

学校读者我要写书评

暂无评论

Seasonal patterns and environmental drivers of atmospheric microplastics in a coastal megacity

引用

Environmental Research 2025年 279卷 121763页

作者： Jia, Qilong Duan, Yusen Song, Zhaofeng Han, Xiaolin Wang, Xiaochong Wang, Limin Song, Daoping Chen, Jia Xiu, Guangli State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical Processes School of Resources & Environmental Engineering East China University of Science & Technology Shanghai200237 China Shanghai Environmental Protection Key Laboratory for Environmental Standard and Risk Management of Chemical Pollutants School of Resources & Environmental Engineering East China University of Science & Technology Shanghai200237 China Shanghai Technology Center for Reduction of Pollution and Carbon Emissions Shanghai200235 China Shanghai Academy of Environmental Sciences Shanghai200233 China School of Public Health Shandong Second Medical University Weifang261053 China Shanghai Environmental Monitoring Centre Shanghai200235 China

Atmospheric microplastics (MPs) pose emerging environmental and health risks, yet their temporal dynamics, sources and environmental interactions in coastal cities remain poorly understood. To address this gap, a year-long atmospheric MPs monitoring campaign was conducted in Shanghai, employing microscopic and spectroscopic identification of particles, along with multi-indicator correlation analysis involving air pollutants, particulate components, and meteorological factors. Results showed an annual average MPs concentration of 0.08 P/m3, with significantly higher concentrations in winter than in other seasons (p 2 (r = 0.55), indicating contributions from industrial emissions, and negatively with O3 (r = −0.41), suggesting oxidative degradation. Positive correlations with Cl− (r = 0.82) and Na+ (r = −0.53) implied marine aerosol influence, while the associations of PET, PE, and PP with Pb and K suggested potential sources from industrial emissions and biomass burning. Meteorological factors and marine monsoons climate significantly regulated MPs accumulation and removal, with low wind speeds in winter facilitating pollution accumulation, whereas wet-season southeasterly monsoons and precipitation enhanced particle removal and marine aerosol interactions. In conclusion, this study elucidates the spatiotemporal dynamics, sources, and local-regional mechanisms of atmospheric MPs in coastal cities, emphasizing the regulatory roles of meteorological and monsoonal factors. These findings provide scientific support for pollution control and policy development. © 2025

关键词： Health risks

来源：评论

学校读者我要写书评

暂无评论

Effect of Hanseniaspora Uvarum–Saccharomyces Cerevisiae Mixed-Fermentation on Aroma Characteristics of Rosa Roxburghii Tratt, Blueberry, and Plum Wines

SSRN

引用

SSRN 2022年

作者： Huang, Mingzheng Liu, Xiaozhu Li, Xin Sheng, Xiaofang Li, Tingting Tang, Weiyuan Yu, Zhihai Wang, Yuangmeng College of Food and Pharmaceutical Engineering Guizhou Institute of Technology Guizhou Guiyang China School of Public Health The Key Laboratory of Environmental Pollution Monitoring and Disease Control Ministry of Education Guizhou Medical University Guizhou Guiyang China College of Liquor and Food Engineering Guizhou University Guizhou Guiyang China

Here, a H. uvarum – Saccharomyces cerevisiae mixed-fermentation was used to ferment fruit wines. Three fruit wines' volatile aroma characteristics were analyzed by headspace–solid-phase microextraction–gas chromatography-mass spectrometry. The results showed that the H. uvarum – S. cerevisiae fermented R. roxburghii, blueberry, and plum fruit wines further enriched their flavor characteristics. The overall flavor characteristics of sequentially-inoculated fruit wines differed significantly from those fermented with S. cerevisiae alone, although several similarities were also observed. Sequential inoculation of H. uvarum and S. cerevisiae positively affected the mellowness of the wine and achieved a better harmony of the overall wine flavors. In particular, H. uvarum – Saccharomyces cerevisiae mixed-fermentation produced blueberry wine had the widest variety and content of aroma compounds among the fermented wines. Therefore, H. uvarum – Saccharomyces cerevisiae mixed-fermentation inoculation in the three fermented fruit wines increased the aroma compound variety and content, thus enriching their aroma richness and complexity. © 2022, The Authors. All rights reserved.

关键词： Wine

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：