检索结果-内蒙古大学图书馆

Structural Dynamic Evolution of Pt Nanoclusters in Ultra-Low-Temperature Methane Combustion with Nitrous Oxide

ACS Applied Materials and Interfaces 2025年第18期17卷 26523-26533页

作者： Hong, Rongrong Wu, Yunshuo Su, Yuetan Stavitski, Eli Wang, Haiqiang Wu, Zhongbiao Wu, Xuanhao Weng, Xiaole Department of Environmental Engineering Zhejiang University Hangzhou310058 China Zhejiang Provincial Key Laboratory of Air Pollution Monitoring and Synergistic Control Hangzhou310058 China National Synchrotron Light Source II Brookhaven National Laboratory New York11973 United States ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou311200 China

Tailoring and stabilizing the active sites of supported noble-metal catalysts to a semioxidized state with unsaturated coordination remain a long-standing challenge in heterogeneous catalysis. Herein, we develop a reaction-atmosphere-driven evolution approach for dynamic structural tuning of semioxidized metal sites in supported Pt catalysts. N2O as an alternative oxidant is used over Pt/TiO2 in CH4 combustion to dynamically prompt the transformation of Pt0 nanoclusters into Ptδ+ (0 4 combustion with O2 that inclines to overoxidize Pt0, the catalytic activity of CH4-N2O combustion is distinctly boosted, achieving complete CH4 combustion at only 200 °C, outperforming the state-of-the-art catalysts using O2 as the oxidant. Computational and experimental studies validate that N2O triggers less electron transfer from Pt than from O2, thereby facilitating the formation and preservation of Ptδ+ species during CH4 combustion. The newly emerged semioxidized Ptδ+ species with oxygen-deficient coordination structures simultaneously enhance lattice oxygen activation and the first C-H bond dissociation of CH4, contributing to ultralow temperature activity. Our work demonstrates that modulating the reaction atmosphere to achieve the structural dynamic evolution of semioxidized metal sites can provide new strategies for designing highly efficient catalysts for low-temperature CH4 combustion. © 2025 American Chemical Society.

关键词： Dynamic response

来源：评论

学校读者我要写书评

暂无评论

Enhanced VOC emission with increased temperature contributes to the shift of O_(3)-precursors relationship and optimal control strategy

引用

Journal of Environmental Sciences 2025年第4期150卷 218-229页

作者： Fangqi Qu Yuanjie Huang Yemin Shen Genqiang Zhong Yan Xu Lingling Jin Hongtao Qian Chun Xiong Fei Zhang Jiasi Shen Bingye Xu Xudong Tian Zhengning Xu Zhibin Wang Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control MOE Key Laboratory of Environment Remediation and Ecological HealthCollege of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311215China Jiaxing Ecological and Environment Bureau Tongxiang Branch Tongxiang 314500China Zhejiang Ecological and Environmental Monitoring Center Hangzhou 310012China Zhejiang Key Laboratory of Ecological and Environmental Monitoring Forewarning and Quality ControlHangzhou 310058China

Assessing the impact of anthropogenic volatile organic compounds(VOCs)on ozone(O_(3))formation is vital for themanagement of emission reduction and pollution *** of O_(3)and the major precursorswas conducted in a typical light industrial city in the YRD region from 1 May to 25 July in *** were the most abundant VOC group,contributing to 55.0%of TVOCs concentration(56.43±21.10 ppb).OVOCs,aromatics,halides,alkenes,and alkynes contributed 18.7%,9.6%,9.3%,5.2%and 1.9%,*** observational site shifted from a typical VOC control regime to a mixed regime from May to July,which can be explained by the significant increase of RO_(x)production,resulting in the transition of environment from NOx saturation to radical saturation with respect to O_(3)*** optimal O_(3)control strategy should be dynamically changed depending on the transition of control *** NOx saturation condition,minimizing the proportion of NOx in reduction could lead to better achievement of O_(3)*** mixed control regime,the cut percentage gets the top priority for the effectiveness of O_(3)*** VOCs sources were identified:temperature dependent source(28.1%),vehicular exhausts(19.9%),petrochemical industries(7.2%),solvent&gasoline usage(32.3%)and manufacturing industries(12.6%).The increase of temperature and radiation would enhance the evaporation related VOC emissions,resulting in the increase of VOC concentration and the change of RO_(x)*** results highlight determination of the optimal control strategies for O_(3)pollution in a typical YRD industrial city.

关键词： O_(3)pollution Volatile organic compounds Photochemical box model Source apportionment Optimal O_(3)control strategies

来源：评论

学校读者我要写书评

暂无评论

Oxygen vacancies induce boosted photocarriers dynamics in WO3/Ti3C2 micro-nano structures with enriched 2D-2D interfaces for trimethylamine abatement

引用

Chemical Engineering Journal 2025年 514卷

作者： Duan, Zeyu Zhong, Ao Tang, Qijun Wang, Haiqiang Wu, Zhongbiao College of Environmental & Resources Science Zhejiang University Key Laboratory of Environment Remediation and Ecological Health Ministry of Education Hangzhou310058 China Zhejiang Tianlan Environmental Protection Technology Co. Ltd. Zhejiang Provincial Key Laboratory of Air Pollution Monitoring and Synergistic Control Hangzhou311202 China School of Science and Engineering The Chinese University of Hong Kong Guangdong Shenzhen518172 China

Removing nitrogenous malodorous VOCs by photocatalytic technology is of great importance, but efficient catalysts for nitrogen-containing molecules still need to be developed. Here, we have successfully synthesized WO3/Ti3C2 microstructures with enriched 2D-2D interfaces and reported boosted photogenerated carrier dynamics induced by oxygen vacancies at the interfaces using trimethylamine (TMA) as a model for nitrogen-containing pollutants. Experimental results and theoretical calculations revealed that the oxygen vacancy modification could significantly improve the adsorption of TMA molecules due to the nucleophilic nature of the N atom. In addition, benefiting from the intimate 2D-2D bonding between Ti3C2 MXene and WO3 nanosheets, the electron transport at the interfaces was greatly reinforced, leading to an almost 5-fold lifetime prolongation of photogenerated holes. Under visible-light irradiation, over 90 % elimination of 50 ppm TMA could be attained in 30 min. This work opens new avenues to construct visible-light-responsive semiconductor materials for nitrogen-containing VOCs’ removal. © 2025 Elsevier B.V.

关键词： Nanosheets

来源：评论

学校读者我要写书评

暂无评论

Oxygen Vacancies Induce Boosted Photocarriers Dynamics in Wo3/Ti3c2 Micro-Nano Structures with Enriched 2d-2d Interfaces for Trimethylamine Abatement

SSRN

引用

SSRN 2025年

作者： Duan, Zeyu Zhong, Ao Tang, Qijun Wang, Haiqiang Wu, Zhongbiao College of Environmental & Resources Science Zhejiang University Key Laboratory of Environment Remediation and Ecological Health Ministry of Education Hangzhou310058 China Zhejiang Tianlan Environmental Protection Technology Co. Ltd. Zhejiang Provincial Key Laboratory of Air Pollution Monitoring and Synergestic Control Hangzhou311202 China School of Science and Engineering The Chinese University of Hong Kong Guangdong Shenzhen518172 China

Purification of nitrogenous malodorous VOCs using photocatalytic technology is of great importance, but efficient catalysts for nitrogen-containing molecules still need to be developed. Here, we have successfully synthesized WO3/Ti3C2 microstructures with enriched 2D-2D interfaces and reported boosted photogenerated carrier dynamics induced by oxygen vacancies at the interfaces using trimethylamine as a model for nitrogen-containing pollutants. Experimental results and theoretical calculations revealed that the oxygen vacancy modification could significantly improve the adsorption of trimethylamine molecules due to the nucleophilic nature of the N atom. In addition, benefiting from the intimate 2D-2D bonding between Ti3C2 MXene and WO3 nanosheets, the electron transport at the interfaces was greatly reinforced, and over 90% elimination of 50 ppm trimethylamine could be achieved within 30 min under visible-light irradiation. This work opens new avenues to construct visible-light-responsive semiconductor materials for nitrogen-containing VOCs’removal. © 2025, The Authors. All rights reserved.

关键词： Nanosheets

来源：评论

学校读者我要写书评

暂无评论

Eu-doped nickel oxide for low-temperature direct decomposition of nitrous oxide

引用

Journal of Colloid and Interface Science 2025年 696卷 137880页

作者： Shuang Cao Zhuoyi Zhang Yunshuo Wu Yuxin Sun Zhe Li Yanxia Gao Haiqiang Wang Xuanhao Wu Zhongbiao Wu Department of Environmental Engineering China Jiliang University Hangzhou PR China Department of Environmental Engineering Zhejiang University Hangzhou PR China Zhejiang Provincial Key Laboratory of Air Pollution Monitoring and Synergistic Control Hangzhou PR China Tianfu Yongxing Laboratory Chengdu PR China

Nitrous oxide (N 2 O) is a potent greenhouse gas with high global warming potential. It is urgent to develop active and stabile catalysts for N 2 O direct catalytic decomposition (deN 2 O) in industrial exhaust gas. In this study, a series of Eu-doped NiO catalysts were synthesized by co-precipitation method. The catalyst with an Eu to Ni molar ratio of 0.04 showed the highest deN 2 O ability, reaching 100 % conversion at 400 °C without generating NO x by-products. The catalyst also displayed resilience against O 2 and NO impurity gases, maintaining structural stability and achieving complete transformation of N 2 O at 440 °C. Eu was uniformly dispersed in NiO in the form of Eu 2 O 3 , which not only regulated the particle size and specific surface area of NiO, but also changed the surface chemistry of NiO by inducing more Ni 2+ active sites and more mobile O β species. Eu-doping altered the decomposition mechanism of N 2 O from L-H to E-R mechanism, reducing the energy barrier of O 2 desorption, which was the rate-determining step. During the reaction, Eu 0.04 Ni showed an activation behavior after cyclic use and long-term reaction and reduced T 100 to 320 °C after 14-hr experiment. These findings demonstrate the potential of the catalyst for practical application and provide new routes for the direct decomposition of N 2 O in industrial exhaust gas.

关键词： Eu-doping N(2)O direct decomposition Nickel oxide Nitric acid exhaust Rare earth element

来源：评论

学校读者我要写书评

暂无评论

Yangtze River Delta Aerosol liquid water in PM_(2.5)and its roles in secondary aerosol formation at a regional site of Yangtze River Delta

引用

Journal of Environmental Sciences 2024年第4期138卷 684-696页

作者： Ruifang Shi Fei Zhang Yemin Shen Jiasi Shen Bingye Xu Binyu Kuang Zhengning Xu Lingling Jin Qian Tang Xudong Tian Zhibin Wang College of Environmental and Resource Sciences Zhejiang Provincial Key Laboratory of Organic Pollution Process and ControlZhejiang UniversityHangzhou 310058China ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311215China Zhejiang Ecological and Environmental Monitoring Center Hangzhou 310012China

Aerosol liquid water content(ALWC)plays an important role in secondary aerosol *** this study,a whole year field campaign was conducted at Shanxi in north zhejiang Province during *** estimated by ISORROPIA-Ⅱ was then investigated to explore its characteristics and relationship with secondary *** exhibited a highest value in spring(66.38μg/m^(3)),followed by winter(45.08μg/m^(3)),summer(41.64μg/m^(3)),and autumn(35.01μg/m^(3)),*** was supposed that the secondary inorganic aerosols(SIA)were facilitated under higher ALWC conditions(RH>80%),while the secondary organic species tended to form under lower ALWC *** RH(>80%)promoted the NO_(3)^(-)formation via gas-particle partitioning,while SO_(4)^(2-)was generated at a relative lower RH(>50%).The ALWC was more sensitive to NO_(3)^(-)(R=0.94)than SO_(4)^(2-)(R=0.90).Thus,the self-amplifying processes between the ALWC and SIA enhanced the particle mass *** sensitivity of ALWC and OX(NO_(2)+O_(3))to secondary organic carbon(SOC)varied in different seasons at Shanxi,more sensitive to aqueous-phase reactions(daytime R=0.84;nighttime R=0.54)than photochemical oxidation(daytime R=0.23;nighttime R=0.41)in wintertime with a high level of OX(daytime:130-140μg/m^(3);nighttime:100-140μg/m^(3)).The self-amplifying process of ALWC and SIA and the aqueous-phase formation of SOC will enhance aerosol formation,contributing to air pollution and reduction of visibility.

关键词： Aerosol liquid water content Nitrate Sulfate Secondary organic compounds Aqueous-phase reaction

来源：评论

学校读者我要写书评

暂无评论

Total volatile organic compound concentration and its influencing factors in urban indoor air after decoration

引用

Chinese Science Bulletin 2011年第25期56卷 2683-2689页

作者： LIU Jian Lei BAI Ge CHEN Jie ZHU LiZhong GUO WeiQiang SHEN XueYou Department of Environmental Science Zhejiang University Hangzhou 310058 China Deqing Environmental Monitoring Central Station Huzhou 313200 China Department of Chemistry Zhejiang University Hangzhou 310058 China Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control Hangzhou 310058 China

The indoor total volatile organic compound (TVOC) concentrations and their relationship to potential influencing factors were evaluated. Samples (n = 2302) were collected from 2007 to 2009 both in old structures and new construction in the city of Hangzhou from bedrooms, sitting rooms and studies that had been decorated within the previous year. The average TVOC concentration in all the newly decorated rooms was 0.65±0.69 mg/m 3 . 35.8% of samples exceeded the China standard. Over the past 3 years, the TVOC concentration decreased and then increased (P < 0.05). The percentage of samples exceeding the China standard in the three rooms decreased in the following order: sitting room>study>bedroom. The characteristics of the TVOC source were a key factor influencing the TVOC concentration. In addition, the TVOC concentration was also (P < 0.05) related to the temperature, humidity, time from the end of decoration to sampling (DR), and the amount of time windows and doors were closed before sampling (DC). The temperature and humidity were less important than the DR and DC. A model to relate the TVOC concentration to the five factors (temperature, humidity, source, DR, and DC) was established based on 288 samples (R 2 = 0.83). The model illustrated that the time for the TVOC concentration to meet the China standard was different for the various rooms, and when the other factors were fixed, the impact of DC (t 1 ) on the TVOC concentration could be quantified as (((t 1 +1)/2) 0.212 1)×100%.

关键词：总挥发性有机化合物影响因素室内空气浓度装修城市 TVOC 中国标准

来源：评论

学校读者我要写书评

暂无评论

Characterization of dissolved organic matter changes during electrolysis of biochemical effluent in printing and dyeing

引用

Zhongguo Huanjing Kexue/China Environmental Science 2022年第12期42卷 5650-5657页

作者： Zheng, Rui-Hao Huang, Yan Liu, Zi-Feng Wang, Jia-De College of Environment Zhejiang University of Technoloy Hangzhou310014 China Zhejiang Provincial Key Laboratory of Industrial Pollution Microbial Control Technology Hangzhou310014 China Deqing Ecological Environment Monitoring Station Deqing313200 China

Fluorescence excitation emission matrix (EEM), combined with ultraviolet-visible absorption spectroscopy (UV-vis), infrared spectroscopy (IR) and gas chromatography-mass spectrometry (GC-MS), were employed to identify the structure and composition of dissolved organic matter (DOM) from the electrolysis process of printing and dyeing biochemical effluent, to reveal the changes in macroscopic water quality indicators COD and BOD. The three-dimensional fluorescence spectroscopy PARAFAC analysis showed that there were three significant fluorescence peaks of tyrosine (C1), tryptophan (C2) and humic acid (YC3) in printing and dyeing biochemical effluent. At a current density of 15mA/cm2, after a certain period of electrolysis (e.g. 30min), the original fluorescence intensity began to gradually weaken, the maximum fluorescence intensity (Fmax) of C1 and C2 fractions remained the same, and DC3 tryptophan component appeared and reduced Fmax. The B/C ratio of the wastewater increased from 0.27 to 0.42, and the C=C, C=O, C-N and C-O-C structures of the printing and dyeing biochemical tailwater DOM were degraded and the corresponding organic compounds such as olefins, ketones, amines, alcohols, benzenes, halogenated hydrocarbons and esters in the raw water were gradually degraded into small molecule organic acids, alkyl esters, alkanes and other by-products, which is the essential reason for the transformation of fluorophores and the improvement of biochemical properties. The three-dimensional fluorescence visualizes the characteristic spectra of the DOM composition of the electrolysis process, which supports the scientific evaluation of the electrolysis technology and the subsequent traceability of the printing and dyeing biochemical effluent. © 2022 Chinese Society for Environmental Sciences. All rights reserved.

关键词： Effluents

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to “Contrasting responses of soil organic carbon dynamics to long-term canopy and understory nitrogen addition in a subtropical forest” [Contrasting responses of soil organic carbon dynamics to long-term canopy and understory nitrogen addition in a subtropical forest. 247 (2024) 108536]

引用

CATENA 2025年 248卷

作者： Xiaofei Lu Heng Yu Frank S. Gilliam Xu Yue Jingchao Huang Songbo Tang Yuanwen Kuang 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 Guangdong Provincial Key Laboratory of Applied Botany and Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China University of Chinese Academy of Sciences Beijing 101408 China Department of Earth and Environmental Sciences University of West Florida Pensacola FL 32514 USA Zhejiang Tiantong Forest Ecosystem National Observation and Research Station Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration School of Ecological and Environmental Sciences East China Normal University Shanghai 200241 China

来源：评论

学校读者我要写书评

暂无评论

Spatiotemporal variation of microeukaryotic biodiversity and biotic condition associated with disinfectants after the COVID-19 lockdown in Wuhan,China

引用

Water Biology and Security 2024年第3期3卷 9-18页

作者： Fan Li Ruiwen Li Yongyong Guo Yindan Zhang Xiangping Chen Fayu Tan Yanxia Zuo Jie Xiong Lihua Yang Jian Han Bingsheng Zhou Lizhong Zhu State Key Laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyChinese Academy of SciencesWuhan430072PR China Ecology and Environment Monitoring and Scientific Research Center Ecology and Environment Administration of Yangtze River BasinMinistry of Ecology and EnvironmentWuhan430010PR China University of Chinese Academy of Sciences Beijing100039PR China Wuhan Ecological and Environmental Monitoring Center Department of Ecology and Environment of Hubei ProvinceWuhan430015PR China Department of Environmental Science Zhejiang UniversityHangzhou310058PR China Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control Hangzhou310058PR China

Intensive application of chlorine-based disinfectants driven by the COVID-19 pandemic was suspected to be detrimental to receiving water ecosystems,but with little field *** characterized the occurrences of typical disinfectants and microeukaryotic communities in surface waters associated with three wastewater treatment plants(WWTP)-river systems one year after the lockdown in Wuhan,***(THMs)declined from summer 2020(0.01–1.82μg/L)to summer 2021(0.01–0.95μg/L),whereas quaternary ammonium salts(QAs)increased from summer 2020(0.53–6.35 ng/L)to summer 2021(8.49–191 ng/L).Biodiversity monitoring with environmental DNA(eDNA)revealed significant temporal variation in microeukaryotic community *** monitored disinfectants were correlated with some eukaryotic communities as demonstrated by redundancy *** example,QAs were positively related to Cryptophyta relative abundance,but negatively related to Rotifera relative abundance.A microeukaryote-based multimetric index indicated ecological impairment near the Han River WWTP outlet in *** findings indicate the influence of heavily used disinfectants on river microeukaryotic communities,and the usefulness of assessing mid-term ecological risks from disinfectants in the post COVID-19 era.

关键词： Disinfectants Biodiversity Biotic condition Wastewater treatment plants-rivers COVID-19 pandemic

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：