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Biochar-based materials and their applications in removal of organic contaminants from wastewater:state-of-the-art review

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Biochar 2019年第1期1卷 45-73页

作者： Qiang Huang Shuang Song Zhe Chen Baowei Hu Jianrong Chen xiangke wang MOE Key Lab of Resources and Environmental System Optimization College of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206People’s Republic of China School of Life Science Shaoxing UniversityHuancheng West Road 508Shaoxing 312000People’s Republic of China College of Geography and Environmental Science Zhejiang Normal UniversityJinhua 321004People’s Republic of China

As a class of famous carbon materials,biochars(BCs)and their derivative materials with excellent physicochemical properties and diversified functionalities present great potential in wastewater treatment *** review focuses on the latest development in reported biochar-based materials as superior adsorbents or catalysts for removing harmful organic contaminants from *** construction and properties of biochar-based materials are briefly introduced at the *** one of the major factors affecting the properties of BCs,the wide diversity of feedstocks,such as agricultural and forest residues,industrial by-products as well as municipal wastes,endows BCs different chemical compositions and *** and herbaceous BCs usually have higher carbon contents,larger surface areas and strong aromaticity,which is in favor of the organic contaminant *** by the desire of more cost-effective materials,several types of biochar-based hybrid materials,such as magnetic BC composites(MBC),nanometal/nanometallic oxides/hydroxide BC composites and layered nanomaterial-coated BCs,as well as physically/chemically activated BCs,have also been *** the help of foreign materials,these types of hybrid BCs have excellent capacities to remove a wide range of organic contaminants,including organic dyestuff,phenols and chemical intermediates,as well as pharmaceutically active compounds,from aquatic *** on the different types of biochar-based materials,organic contaminants can be removed by different mechanisms,such as physical adsorption,electrostatic interaction,π-πinteraction and Fenton process,as well as photocatalytic *** summary,the low cost,tunable surface chemistry and excellent physical-chemical properties of BCs allow it to be a potential material in organic contaminant *** combination of BCs with foreign materials endows BCs more functionalities and broader development *** the urge

关键词： Biochar-based materials Water purification Organic contaminants Catalytic degradation Adsorption

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Efficient elimination of organic and inorganic pollutants by biochar and biochar-based materials

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Biochar 2020年第1期2卷 47-64页

作者： Baowei Hu Yuejie Ai Jie Jin Tasawar Hayat Ahmed Alsaedi Li Zhuang xiangke wang School of Life Science Shaoxing UniversityHuancheng West Road 508Shaoxing 312000People’s Republic of China College of Environmental Science and Engineering North China Electric Power UniversityBeijing 102206People’s Republic of China NAAM Research Group Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123People’s Republic of China

Biochar have received multidisciplinary attention because of their extraordinary physicochemical *** this review,the application of biochar and biochar-based materials for the efficient elimination of organic and inorganic pollutants are *** sorption of organic chemicals and heavy metal ions/radionuclides,degradation/transformation of organic pollutants,and sorption-reduction-solidification of high-valent metal ions are described in *** interaction mechanism at molecular level from advanced spectroscopic techniques and theoretical calculations is ***,the challenges in the application of biochar and biochar-supported materials in the immobilization of heavy metal ions and photocatalytic degradation of persistent organic pollutants in soils or wastewater are pointed *** review is helpful for the graduate stu-dents to understand the recent works about biochar and biochar-supported materials in environmental pollutants management.

关键词： Biochar Sorption-reduction Degradation Metal ions Organic pollutants

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Insights into Photothermally Enhanced Photocatalytic U(VI)Extraction by a Step-Scheme Heterojunction

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Research 2023年第1期2022卷 285-299页

作者： Yifeng Zhang Haorong Sun Feixue Gao Shuo Zhang Qingzhi Han Jing Li Ming Fang Yawen Cai Baowei Hu Xiaoli Tan xiangke wang MOE Key Laboratory of Resources and Environmental System Optimization College of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206China Key Laboratory of Theoretical and Computational Photochemistry Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100875China Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of Life Science Shaoxing UniversityShaoxing 312000China

In this work,a CdS/BivO4 step-scheme(S-scheme)heterojunction with self-photothermally enhanced photocatalytic effect was synthesized and applied for efficient U(VI)*** such as transient absorption spectroscopy and Tafel test together confirmed the formation of S-scheme heterojunctions,which allows CdS/BivO_(4) to avoid photocorrosion while retaining the strong reducing capacity of CdS and the oxidizing capacity of BivO_(4).Experimental results such as radical quenching experiments and electron spin resonance show that U(VI)is rapidly oxidized by photoholes/·OH to insoluble UO(OH)2 after being reduced to U(IV)by photoelectrons/·O2,which precisely avoids the depletion of electron sacrificial *** rapid recombination of electron-hole pairs triggered by the S-scheme heterojunction is found to release large amounts of heat and accelerate the *** work offers a new enhanced strategy for photocatalytic uranium extraction and presents a direction for the design and development of new photocatalysts.

关键词： scheme retaining thermally

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Metal-organic framework nanocrystal-derived hollow porous materials: Synthetic strategies and emerging applications

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The Innovation 2022年第5期3卷 50-65页

作者： Xiaolu Liu Gaurav Verma Zhongshan Chen Baowei Hu Qifei Huang Hui Yang Shengqian Ma xiangke wang College of Environmental Science and Engineering North China Electric Power UniversityBeijing 102206China School of Life Science Shaoxing UniversityHuancheng West Road 508Shaoxing 312000China Department of Chemistry University of North Texas1508 W Mulberry StreetDentonTX 76201USA State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China

Metal-organic frameworks(MOFs)have garnered multidisciplinary attention due to their structural tailorability,controlled pore size,and physicochemical functions,and their inherent properties can be exploited by applying them as precursors and/or templates for fabricating derived hollow porous *** fascinating,functional properties and applications of MOFderived hollow porous materials primarily lie in their chemical composition,hollow character,and unique porous ***,a comprehensive overview of the synthetic strategies and emerging applications of hollow porous materials derived from MOF-based templates and/or precursors is *** on the role of MOFs in the preparation of hollow porous materials,the synthetic strategies are described in detail,including(1)MOFs as removable templates,(2)MOF nanocrystals as both self-sacrificing templates and precursors,(3)MOF@secondary-component core-shell composites as precursors,and(4)hollow MOF nanocrystals and their composites as ***,the applications of these hollow porous materials for chemical catalysis,electrocatalysis,energy storage and conversion,and environmental management are ***,a perspective on the research challenges and future opportunities and prospects for MOF-derived hollow materials is provided.

关键词： composites materials. porous

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Synthesis of novel nanomaterials and their application in efficient removal of radionuclides

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Science China Chemistry 2019年第8期62卷 933-967页

作者： Xiangxue wang Long Chen Lin wang Qiaohui Fan Duoqiang Pan Jiaxing Li Fangting Chi Yi Xie Shujun Yu Chengliang Xiao Feng Luo Jun wang Xiaolin wang Changlun Chen wangsuo Wu Weiqun Shi Shuao wang xiangke wang Key Laboratory of Resources and Environmental Systems Optimization Ministry of EducationCollege of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206China China Academy of Engineering Physics Mianyang 621900China State Key L aboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionCollaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China Laboratory of Nuclear Energy Chemistry and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Key Laboratory of Petroleum Resources Gansu ProvinceNorthwest Institute of Eco-Environment and Resources. Chinese Academy of SciencesLanzhou 730000China Radiochemistry Laboratory School of Nuclear Science and TechnologyLanzhou UniversityLanzhou 730000China CAS Key Laboratory of Photovoltaic and Energy Conservation Materials. Institute of Plasma Physics Chinese Academy of Sciences Hefei 230031China Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory Southwest University of Science and Technology Mianyang 621010China State Key Laboratory of Nuclear Resources and Environment School of BiologyChemistry and Material Science East China University of TechnologyFuzhou 344000China College of Materials Science and Chemical Engineering Harbin Engineering UniversityHarbin 150001China China Academy of Engineering Physics Mianyang 621900China

With the development of nuclear energy, large amounts of radionuclides are inevitably released into the natural environment. It is necessary to eliminate radionuclides from wastewater for the protection of environment. Nanomaterials have been considered as the potential candidates for the effective and selective removal of radionuclides from aqueous solutions under complicated conditions because of their high specific surface area, large amounts of binding sites, abundant functional groups, pore-size controllable and easily surface modification. This review mainly summarized the recent studies for the synthesis, fabrication and surface modification of novel nanomaterials and their applications in the efficient elimination and solidification of radionuclides,and discussed the interaction mechanisms from batch experiments, spectroscopy analysis and theoretical calculations. The sorption capacities with other materials, advantages and disadvantages of different nanomaterials are compared, and at last the perspective of the novel nanomaterials is summarized.

关键词： nanomaterials radionuclides removal preconcentration interaction mechanism

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High performance organic transistors and phototransistors based on diketopyrrolopyrrole-quaterthiophene copolymer thin films fabricated via low-concentration solution processing

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Chinese Chemical Letters 2018年第11期29卷 1675-1680页

作者： Pengcheng Gu Mengxiao Hu Shang Ding Guangyao Zhao Yifan Yao Feng Liu Xiaotao Zhang Huanli Dong xiangke wang Wenping Hu Beijing Key Laboratory for Optical Materials and Photonic Devices Department of Chemistry Capital Normal University Beijing 100048 China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) & Department of Chemistry School of Science Tianjin University Tianjin 300072 China College of Environmental Science and Engineering North China Electric Power University Beijing 102206 China Department of Physics &Astronautics Shonghai Jiao Tong University Shanghai 200240 China

Conjugated polymers have received considerable attentions over the past years due to their large-area potential applications via low-cost solution processing. Improving crystallinity of conjugated polymer molecules in solution-processed thin films is crucial for their efficient charge transport and thus high performance optoelectronic devices. Herein, with diketopyrrolopyrrole-quaterthiophene （PDQT） copo/ymer as an example, it is found that by simply reducing the solution concentration for spincoating meanwhile with the assistance of post-annealing, significantly enhanced film crystallinity with formation of typical single crystalline domains is obtained, which benefits from the enough space for better molecular assembly especially at the semiconductor/dielectric interface. High performance polymer transistors and phototransistors were finally constructed based on the optimal lowconcentration （2 mg/mL） spin-coated PDQT films （～12 nm）, which giving a high charge carrier mobility of 2.28 cm2 V-1 s-1 and a photoresponse on/off ratio of 2.1 ×107 at VG = 0 V under white light irradiation of 6mW/cm2. The results suggest that the bright future of PDQT crystalline films for large-area flexible integrated optoelectronic devices and the application of effective low-concentration processing approach in solution-processed organic electronics with reduced material waste.

关键词： Conjugated polymer Thin film Low-concentration processing Crystallinity Molecular orders Mobility Optoelectronic property

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Information Fusion Analysis of Multi-UAV System Based on Information Geometry

Information Fusion Analysis of Multi-UAV System Based on Inf...

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第36届中国控制会议

作者： ZHAO Yunyun wang xiangke KONG Weiwei SHEN Lincheng College of Mechatronic Engineering and Automation National University of Defense Technology Naval Academy of Armament

ISBN: (纸本)9781538629185

We study the problem of optimally coordinating multiple fixed-wing UAVs to perform target tracking,which entails that the UAVs are tasked with gathering the best joint radar-based measurements of ground *** order to obtain the maximum amount of information,we first studied the information expression in multi-sensor network *** on the Minkowski determinant theorem,the change of information volume caused by data fusion is analyzed with the relevant content of information geometry,and take it as the foundation of communication and action *** results show that the data fusion can increase the amount of information,and make the result more ***,for specific scene,the simulation results illustrate that multi-UAV cooperative observation can improve the accuracy of target *** sets the foundation for the further study of the information exchange between multi-UAV.

关键词： Multi-UAVs Decision-making Information Geometry Fisher Information

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Erratum on “Complexation of radionuclide 152+154Eu（Ⅲ） with alumina-bound fulvic acid studied by batch and time-resolved laser fluorescence spectroscopy” [Sci. China Chem., 2017, 60: 107–114]

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Science China Chemistry 2019年第12期62卷 1732-1733页

作者： Xiangxue wang Shujun Yu Zhongshan Chen Wencheng Song Yuantao Chen Tasawar Hayat Ahmed Alsaedi Wei Guo Jun Hu xiangke wang School of Environment and Chemical Engineering North China Electric Power UniversityBeijing 102206China Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions China Department of Chemistry Qinghai Normal University810008XiningQinghaiChina NAAM Research Group Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Mathematics Quaid-I-Azam UniversityIslamabad 44000Pakistan

In the above referenced publication[1],the Figure 5 and data in Table 1 are correct,but we ignored to present the final pH values of the system,which is very important to understand the properties.

关键词： properties. Figure batch

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Orderly Porous Covalent Organic Frameworks-based Materials:Superior Adsorbents for Pollutants Removal from Aqueous Solutions

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The Innovation 2021年第1期2卷 106-134页

作者： Xiaolu Liu Hongwei Pang Xuewei Liu Qian Li Ning Zhang Liang Mao Muqing Qiu Baowei Hu Hui Yang xiangke wang School of Life Science Shaoxing UniversityHuancheng West Road 508Shaoxing 312000P.R.China College of Environmental Science and Engineering North China Electric Power UniversityBeijing 102206P.R.China State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210093P.R.China

Covalent organic frameworks(COFs)are a new type of crystalline porous polymers known for chemical stability,excellent structural regularity,robust framework,and inherent porosity,making them promising materials for capturing various types of pollutants from aqueous *** review thoroughly presents the recent progress and advances of COFs and COF-based materials as superior adsorbents for the efficient removal of toxic heavy metal ions,radionuclides,and organic *** about the interaction mechanisms between various pollutants and COF-based materials are summarized from the macroscopic and microscopic standpoints,including batch experiments,theoretical calculations,and advanced spectroscopy *** adsorption properties of various COF-based materials are assessed and compared with other widely used *** commonly used strategies to enhance COF-based materials’adsorption performance and the relationship between structural property and sorption ability are also ***,a summary and perspective on the opportunities and challenges of COFs and COF-based materials are proposed to provide some inspiring information on designing and fabricating COFs and COF-based materials for environmental pollution management.

关键词： covalent organic frameworks(COFs) heavy metal ions radionuclides organic pollutants interaction mechanism

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真空100keV质子辐照对石墨膜热性能的影响

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宇航材料工艺 2023年第2期53卷 100-104页

作者：吴冰王向轲何端鹏李岩王茹中国空间技术研究院北京100094 战略支援部队航天系统部装备部军代局北京一室北京100074

研究了25μm石墨膜在能量100 keV最大注量2.5×10^(15)p/cm^(2)的真空质子辐照条件下的微观结构和热性能,采用拉曼光谱(Raman spectrum)、X射线衍射(XRD)、X射线光电子能谱(XPS)进行微观结构分析,采用激光闪射法(LFA)进行热性能分析。... 详细信息

研究了25μm石墨膜在能量100 keV最大注量2.5×10^(15)p/cm^(2)的真空质子辐照条件下的微观结构和热性能,采用拉曼光谱(Raman spectrum)、X射线衍射(XRD)、X射线光电子能谱(XPS)进行微观结构分析,采用激光闪射法(LFA)进行热性能分析。石墨膜晶面间距为0.335 83 nm,石墨化度为95.0%。结果发现,质子辐照会导致石墨膜表层产生缺陷,片层间距增大,石墨化度降低,氧含量升高;随着质子辐照注量的增加,Raman光谱中D和G峰的积分面积比表明缺陷密度不断增加。25μm石墨膜经过能量为100 keV注量为2.5×10^(15)p/cm^(2)质子辐照后,石墨膜热扩散系数无明显变化。

关键词：石墨膜质子辐照效应缺陷热性能

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