检索结果-内蒙古大学图书馆

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

引用

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

来源：评论

学校读者我要写书评

暂无评论

Low-temperature NH_(3)-SCR performance of a novel Chlorella@Mn composite denitrification catalyst

引用

Journal of environmental sciences 2024年第3期137卷 271-286页

作者： Hengheng Liu Fengyu Gao Songjin Ko Ning Luo Xiaolong Tang Erhong Duan Honghong Yi Yuansong Zhou School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants Beijing 100083China School of Environmental Science and Engineering University of Science and Technology HebeiHebei 050018China Department of Chemistry Pyongyang University of ArchitecturePyongyangDemocratic People’s Republic of Korea

The synthesis process of conventional Mn-based denitrification catalysts is relatively complex and *** this paper,a resource application of chlorella was proposed,and a Chlorella@Mn composite denitrification catalyst was innovatively synthesized by electrostatic *** Chlorella@Mn composite denitrification catalyst prepared under the optimal conditions(0.54 g/L Mn^(2+)concentration,20 million chlorellas/mL concentration,450℃ calcination temperature)exhibited a well-developed pore structure and large specific surface area(122 m^(2)/g).Compared with MnOx alone,the Chlorella@Mn composite catalyst achieved superior performance,with~100%NH_(3)selective catalytic reduction(NH_(3)-SCR)denitrification activity at 100-225℃.The results of NH_(3)temperature-programmed desorption(NH_(3)-TPD)and H_(2)temperature-programmed reduction(H_(2)-TPR)showed that the catalyst had strong acid sites and good redox *** potential testing showed that the electronegativity of the chlorella cell surface could be used to enrich with Mn^(2+).X-ray photoelectron spectroscopy(XPS)confirmed that Chlorella@Mn had a high content of Mn^(3+)and surface chemisorbed ***-situ diffuse refectance infrared Fourier transform spectroscopy(in-situ DRIFTS)experimental results showed that both Langmuir-Hinshelwood(L-H)and Eley-Rideal(E-R)mechanisms play a role in the denitrification process on the surface of the Chlorella@Mn catalyst,where the main intermediate nitrate species is monodentate *** presence of SO_(2)promoted the generation and strengthening of Bronsted acid sites,but also generated more sulfate species on the surface,thereby reducing the denitrification activity of the Chlorella@Mn *** Chlorella@Mn composite catalyst had the characteristics of short preparation time,simple process and low cost,making it promising for industrial application.

关键词： Chlorella@Mn catalyst NH_(3)-SCR Poisoning resistance Reaction mechanism Infuence of SO_(2)

来源：评论

学校读者我要写书评

暂无评论

Hybrid peroxi-coagulation/ozonation process for highly efficient removal of organic contaminants

引用

Chinese Chemical Letters 2023年第10期34卷 86-92页

作者： Shasha Li Jinxin Xie Jinyu Gu Minghua Zhou Key Laboratory of Pollution Process and Environmental Criteria Ministry of EducationCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Tianjin Advanced Water Treatment Technology International Joint Research Center College of Environmental Science and EngineeringNankai UniversityTianjin 300350China

Aromatic compounds such as phenols presented widely in coal chemical industry wastewater(CCW)render the treatment facing great challenge due to their biorefractory characteristics and potential risks to the environment and human ***-based advanced oxidation processes show promising for these pollutants removal,but the mineralization via ozonation alone is unsatisfactory and not ***,a hybrid peroxi-coagulation/ozonation process(denoted as PCO)was developed using sacrificial iron plate as an anode and carbon black modified carbon felt as cathode in the presence of *** enhanced phenol removal of∼100%within 20 min and phenol mineralization of∼80%within 60 min were achieved with a low energy consumption of 0.35 kWh/g *** this novel process,synergistic effect between ozonation and peroxi-coagulation was observed,and beside O_(3) direct oxidation,peroxone played a dominant role for phenol *** the PCO process,the hydrolyzed Fe species enhanced the generation of reactive oxygen species(ROS),while•OH was dominantly responsible for pollutant *** process also illustrated high resistance to high ionic strength and better performance for TOC removal in real wastewater when compared with ozonation and peroxi-coagulation ***,this process is more cost-effective,being very promising for CCW treatment.

关键词： Coal chemical industry wastewater Phenol removal Catalytic ozonation Peroxi-coagulation Reactive oxygen species

来源：评论

学校读者我要写书评

暂无评论

Mechanism of ball milled activated carbon in improving the desalination performance of flow-and fixed-electrode in capacitive deionization desalination

引用

Frontiers of environmental science & engineering 2023年第5期17卷 145-154页

作者： Ge Shen Junjun Ma Jianrui Niu Ruina Zhang Jing Zhang Xiaoju Wang Jie Liu Jiarong Gu Ruicheng Chen Xiqing Li Chun Liu College of Environmental Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050018China Pollution Prevention Biotechnology Laboratory of Hebei Province Shijiazhuang 050018China

Capacitive deionization(CDI)is a novel electrochemical water-treatment *** electrode material is an important factor in determining the ion separation *** carbon(AC)is extensively used as an electrode material;however,there are still many deficiencies in commercial *** adopted a simple processing method,ball milling,to produce ball milled AC(BAC)to improve the physical and electrochemical properties of the original AC and desalination *** BAC was characterized in detail and used for membrane capacitive deionization(MCDI)and flow-electrode capacitive deionization(FCDI)electrode *** ball milling,the BAC obtained excellent pore structures and favorable surfaces for ion adsorption,which reduced electron transfer resistance and ion migration resistance in the *** optimal ball-milling time was 10 ***,the improved effects of BAC as fixed electrodes and flow electrodes are different and the related mechanisms are discussed in *** average salt adsorption rates(ASAR)of FCDI and MCDI were improved by 134%and 17%,respectively,and the energy-normalized removal salt(ENRS)were enhanced by 21%and 53%,*** believe that simple,low-cost,and environmentally friendly BAC has great potential for practical engineering applications of FCDI and MCDI.

关键词： Ball-milling Capacitive deionization Fixed electrode Flow electrode

来源：评论

学校读者我要写书评

暂无评论

δ-MnO_(2) decorated layered double oxides in-situ grown on nickel foam towards electrothermal catalysis of n-heptane

引用

Journal of environmental sciences 2023年第4期126卷 308-320页

作者： Chaoqi Chen Shunzheng Zhao Xiaolong Tang Honghong Yi Fengyu Gao Qingjun Yu Jun Liu Weixiao Wang Tian Tang Xianzheng Meng Department of Environmental Engineering School of Energy and Environmental EngineeringUniversity of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants Beijing 100083China

Energy-saving and efficient monolithic catalysts are hotspots of catalytic purification of industrial gaseous ***,we have developed an electrothermal catalytic mode,in which the ignition temperature required for the reaction is provided by Joule heat generated when the current flows through the *** this paper,Mn/NiAl/NF,Mn/NiFe/NF and Mn/NF metal-based monolithic catalysts were prepared using nickel foam (NF) as the carrier for thermal and electrothermal catalysis of *** results indicated that Mn-based monolithic catalysts exhibit high activity in thermal and electrothermal ***/NiFe/NF achieve conversion of n-heptane more than 99%in electrothermal catalysis under a direct-current (DC) power of 6 W,and energy-saving is 54% compared with thermal *** addition,the results indicated that the introduction of NiAl (or NiFe) greatly enhanced the catalytic activity of Mn/NF,which attributed to the higher specific surface area,Mn3+/Mn4+,Ni3+/Ni^(2+),adsorbed oxygen species (Oads)/lattice oxygen species (Olatt),redox performance of the *** catalytic activity was significantly higher than thermal catalytic activity before complete conversion,which may be related to electronic ***,Mn/NiFe/NF has good cyclic and long-term stability in electrothermal *** paper provided a theoretical basis for applying electrothermal catalysis in the field of VOCs elimination.

关键词： Monolithic catalyst MnO_(2) Electric heating n-Heptane

来源：评论

学校读者我要写书评

暂无评论

Alkaline leaching mechanism of MSWI bottom ash:the pivotal role of Si(Al)chemical bonding environments

引用

science China(Technological sciences) 2025年第2期68卷 73-85页

作者： Ningning SHAO Zekun JIAO Weipeng FENG Yu JIN Fanlong KONG Zhijun DONG Zuotai ZHANG Institute of Technology for Marine Civil Engineering Shenzhen Institute of Information Technology(SZIIT)Shenzhen 518172China School of Environmental Science and Engineering Key Laboratory of Municipal Solid Waste Recycling Technology and Management of Shenzhen CitySouthern University of Science and Technology(SUSTech)Shenzhen 518055China Guizhou NASH Ecological Technology Co. LTDGuiyang 550016China

Municipal solid waste incineration bottom ash(MSWIBA)is a complex assemblage of aluminosilicate materials encompassing diverse solid ***,its complexity poses great challenges to their resource *** the sake of the alkali activation use of MSWIBA,this work focused on the characterizations and alkaline leaching experiments of various classified MSWIBA after *** the different categories of MSWIBA,waste glass(BA-G)and other unidentified slags(BA-O)were identified as potential precursors for alkali activation *** alkaline leaching experiments proved that alkaline concentration,reaction temperature,reaction time,and raw material classification influenced the leaching process and *** these,the Si/Al chemical bonding environments from the material type played a pivotal *** the materials had Q_(n)(n>2)as the primary bonding structure,steric hindrance by the chain frameworks affected the alkali dissolution process,resulting in gradual disintegration from the outer layers *** the materials dominated by Q1 frameworks,OH-could penetrate the frameworks,leading to their rapid depolymerization and outward ***,the Si/Al bonding environment played a crucial role in alkaline dissolution,providing theoretical guidance for classifying the alkali-activation utilization of MSWIBA and other aluminosilicate solid wastes.

关键词： municipal solid waste incineration bottom ash classification alkaline leaching chemical bonding environments mechanism

来源：评论

学校读者我要写书评

暂无评论

Review on micro-mechanism of forming emulsification during rare earth extraction by acidic extractants

引用

Journal of Rare Earths 2025年第1期43卷 9-20,I0001页

作者： Jie Liu Yuxiu Zhao Zhirong Wang Minghui Jia Wenxiang Xia Guizhi Wu Wenda Guo Ru'an Chi Kun Huang School of Environmental and Municipal Engineering Qingdao University of TechnologyQingdao266100China Open Project of Key Laboratory of Green Chemical Engineering Process of Ministry of Education Wuhan Institute of Technologywuhan430205China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China

Solvent extraction is the main method used to separate and purify rare earth *** the process of rare earths extraction,emulsification often generated due to the instability of the aqueous and organic phases or improper operating *** emulsification occurs,it would not only lead to low rare earths recovery efficiency,small product quantities,high production costs and the losing of extractant and rare earth resources,but also result in serious environmental ***,it is very important to study the micro-mechanisms of emulsification and establish new methods to prevent emulsification at the *** this paper,possible factors resulting in emulsification,such as the compositions and properties of the organic and aqueous phases,the operating conditions of the rare earths extraction are *** micro-mechanisms of emulsification are summarized basing on the microscopic structures in the bulk phase,aggregations of the extractants at the organic-aqueous interface,spectral characterizations and computational *** this basis,new formation mechanisms are proposed for *** explorations are employed to verify the correctness of these new ***,future directions for studies of the emulsification micro-mechanism are *** study provides a theoretical basis for further understanding the micro-mechanisms of interfacial instability resulting in emulsification in the process of rare earths extraction.

关键词： Extraction Rare earths Emulsification Mechanism Interface

来源：评论

学校读者我要写书评

暂无评论

Penicillin fermentation residue biochar as a high-performance electrode for membrane capacitive deionization

引用

Frontiers of environmental science & engineering 2023年第4期17卷 155-165页

作者： Jie Liu Junjun Ma Weizhang Zhong Jianrui Niu Zaixing Li Xiaoju Wang Ge Shen Chun Liu School of Environmental Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050018China Pollution Prevention Biotechnology Laboratory of Hebei Province Shijiazhuang 050018China

Membrane capacitive deionization(MCDI)is an efficient desalination technology for *** fermentation residue biochar(PFRB)possesses a hierarchical porous and O/N-doped structure which could serve as a high-capacity desalination electrode in the MCDI *** optimal conditions(electrode weight,voltage,and concentration)and a carbonization temperature of 700℃,the maximum salt adsorption capacity of the electrode can reach 26.4 mg/g,which is higher than that of most carbon ***,the electrochemical properties of the PFRB electrode were characterized through cyclic voltammetry(CV)and electrochemical impedance spectroscopy(EIS)with a maximum specific capacitance of 212.18 F/***,biotoxicity tests have showed that PFRB was non-biotoxin against luminescent bacteria and the MCDI system with the PFRB electrode remained stable even after 27 adsorption–desorption *** study provides a novel way to recycle penicillin residue and an electrode that can achieve excellent desalination.

关键词： Membrane capacitive deionization(MCDI) Penicillin fermentation residue biochar (PFRB) Hierarchical porous O/N-doped Desalination

来源：评论

学校读者我要写书评

暂无评论

Bi-ZFO/BMO-Vo Z-scheme heterojunction photocatalysis-PMS bidirectionally enhanced coupling system for environmental remediation

引用

材料科学技术（英文版） 2025年第5期208卷 164-175页

作者： Zhaoxin Lin Jing Shao JianWei Zhu Dandan Wang School of Chemistry and Environmental Engineering Changchun University of Science and TechnologyChangchun 130022China Zhongshan Institute of Changchun University of Science and Technology Zhongshan 528437China Zhongshan Institute of Changchun University of Science and Technology Zhongshan 528437China College of Engineering Jilin Normal UniversitySiping 136000China Key Laboratory of Preparation and Application of Environmental Friendly Materials(Jilin Normal University) Ministry of EducationChangchun 130103China

Given the urgency of organic pollutant removal and the low efficiency of advanced oxidation processes(AOPs),a novel Bi-ZFO/BMO-Vo photocatalyst was fabricated via the solvothermal method.A coupling system was constructed to combine photocatalysis with peroxymonosulfate(PMS)oxidation processes,which synergistically degrade organic ***-ZFO/BMO-Vo exhibited excellent photocatalytic per-formance,which could remove 100％RhB in 110 min and degrade 100％MG in 70 min,and 88％H-TC in 50 *** excellent catalytic performance of Bi-ZFO/BMO-Vo was not only attributed to the syner-gistic effect of PMS activation and photocatalysis,but also attributed to the SPR effect of Bi nanoparticles,electron capture of oxygen vacancies,and intense contact of Bi-ZFO/BMO-Vo *** active species capture experiments and EPR tests indicated that 1O2,SO4-·,OH,and O2-worked together for the RhB *** degradation intermediates of RhB were identified by *** on the exper-imental results,the band structure and Z-scheme charge transfer mechanism were *** evaluation indicated that Bi-ZFO/BMO-Vo-Vis/PMS could significantly reduce RhB *** efficient and stable catalyst is expected to be used in organic wastewater degradation and practical applications.

关键词： Z-scheme heterojunction Peroxymonosulfate Photocatalytic degradation Bi2MoO6

来源：评论

学校读者我要写书评

暂无评论

Factors influencing the effectiveness of SM-VCE method in solving 3D surface deformation

引用

Geodesy and Geodynamics 2025年第1期16卷 55-66页

作者： Xupeng Liu Guangyu Xu Mingkai Chen Tengxu Zhang School of Surveying and Geoinformation Engineering East China University of TechnologyNanchang 330013China Key Laboratory of Mine Environmental Monitoring and Improving Around Poyang Lake of Ministry of Natural Resources East China University of TechnologyNanchang 330013China College of Resources and Environmental Science and Engineering Hubei University of Science and TechnologyXianning 437100China

The recovery of coseismic 3-dimensional(3D)surface deformation field plays a crucial role in studying seismic source characteristics and earthquake *** of now,there are two main types of methods for recovering coseismic 3D surface deformations:the first type is to solve the problem directly by using the least squares method based on observations from three or more viewpoints,and the second type solves the problem by combining ascending and descending In SAR line-of-sight(LOS)observations with constraint *** former type is mainly applicable to surface rupture earthquakes,because when an earthquake ruptures to the surface,we can usually obtain surface deformation observations from three or more *** latter type applies to earthquakes that do not cause surface ruptures and have extensive blind ***,most research focuses on improving the above types of ***,some key factors in the coseismic 3D surface deformation inversion are rarely mentioned,such as the influence of window size on the inversion results in the strain model and variance component estimation method(SM-VCE),and whether the outliers in the observational data are ***,we developed a new chain of integrating In SAR observation and SM-VCE model to systematically assess the impacts of window size and outliers on coseismic 3D surface deformation *** simulation experiments,we observed that the selection of window size significantly impacts the accuracy of the ***,larger window sizes lead to wider residuals ranges in the fault region,resulting in the loss of extreme solution values when using a window of 15×15 pixels(i.e.,7.5 km×7.5 km).Hence,we recommend utilizing windows with 7×7 pixels or 9×9 pixels for optimal accuracy,as larger window sizes diminish the significance of the *** elimination of points displaying different deformation directions helps reduce residuals and preserves near-field deformation ***

关键词： InSAR 3D surface deformation Window size Robust estimation

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：