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CeO_(2)/Bi_(2)WO_(6) Z型异质结构建及高效催化降解盐酸四环素

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过程工程学报 2024年第1期24卷 117-126页

作者：吴平平孟冠华杜宇刘宝河施绪周瑞江用彬章慧娟安徽工业大学能源与环境学院安徽马鞍山243002 教育部生物膜法水质净化及利用技术工程研究中心安徽马鞍山243002

盐酸四环素(TC)作为一种广谱抗生素,广泛应用于临床医学、畜牧业和水产养殖业,致使大量TC废水排放到水生环境中,并通过食物链危害人类健康。光催化作为一种先进的氧化技术,在处理难降解废水方面具有显著优势。本工作在水热法制备Bi2WO6... 详细信息

盐酸四环素(TC)作为一种广谱抗生素,广泛应用于临床医学、畜牧业和水产养殖业,致使大量TC废水排放到水生环境中,并通过食物链危害人类健康。光催化作为一种先进的氧化技术,在处理难降解废水方面具有显著优势。本工作在水热法制备Bi2WO6的基础上,以共沉淀法掺杂适量的CeO_(2)合成复合催化剂CeO_(2)/Bi_(2)WO_(6),并对其晶体结构、形貌特征和光吸收性能等进行表征。结果表明,CeO_(2)/Bi_(2)WO_(6)摩尔比、催化剂投加量、TC初始浓度和溶液初始pH值对可见光催化降解TC有显著的影响,其中,CeO_(2)/Bi_(2)WO_(6)异质结的形成能够有效提高光生电子空穴的分离效率,进而增强光催化效率。当CeO_(2)/Bi_(2)WO_(6)的摩尔比为1:3、溶液初始pH为5、TC浓度为8 mg/L、CeO_(2)/Bi_(2)WO_(6)投加量为0.4 g/L时,TC和溶液总有机碳(TOC)的去除率可分别达90.7%和64.3%。根据自由基捕获实验和催化剂的价带、导带位置,提出CeO_(2)/Bi_(2)WO_(6)异质结光催化降解TC的机理。经过6次循环实验,CeO_(2)/Bi_(2)WO_(6)催化剂对TC去除率仍为86.4%。

关键词： CeO_(2)/Bi_(2)WO_(6) Z型异质结可见光光催化盐酸四环素

Corrigendum to’The adsorption behavior of metals in aqueous solution by microplastics effected by UV radiation’[Journal of Environmental Sciences,87(2020)272–280]

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Journal of Environmental Sciences 2021年第3期33卷 440-440页

作者： Qiongjie Wang Yong Zhang Xiaoxue Wangjin Yulai Wang guanhua meng Yihua Chen School of Energy and Environment Anhui University of TechnologyMaanshanAnhui 243002China

Analytic optimal pose tracking control in close-range proximity operations with a non-cooperative target

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Chinese Journal of Aeronautics 2024年第5期37卷 410-425页

作者： Caisheng WEI guanhua HUANG Zeyang YIN Qifeng CHEN School of Automation Central South UniversityChangsha 410083China

This paper investigates an analytical optimal pose tracking control problem for chaser spacecraft during the close-range proximity operations with a non-cooperative space target subject to attitude tumbling and unknown orbital maneuvering.Firstly,the relative translational motion between the orbital target and the chaser spacecraft is described in the Line-of-Sight(LOS)coordinate frame along with attitude quaternion dynamics.Then,based on the coupled 6-Degree of Freedom(DOF)pose dynamic model,an analytical optimal control action consisting of constrained optimal control value,application time and its duration are proposed via exploring the iterative sequential action control algorithm.Meanwhile,the global closed-loop asymptotic stability of the proposed predictive control action is presented and discussed.Compared with traditional proximity control schemes,the highlighting advantages are that the application time and duration of the devised controller is applied discretely in light of the influence of the instantaneous pose configuration on the pose tracking performance with less energy consumptions rather than at each sample time.Finally,three groups of illustrative examples are organized to validate the effectiveness of the proposed analytical optimal pose tracking control scheme.

关键词： Optimal control Close-range proximity operation Non-cooperative space target Coupled attitude and orbit control Iterative sequential action control

Rational design of unrestricted pRN1 derivatives and their application in the construction of a dual plasmid vector system for Saccharolobus islandicus

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mLife 2024年第1期3卷 119-128页

作者： Pengpeng Zhao Xiaonan Bi Xiaoning Wang Xu Feng Yulong Shen guanhua Yuan Qunxin She CRISPR and Archaea Biology Research Center State Key Laboratory of Microbial Technology and Microbial Technology InstituteShandong UniversityQingdaoChina

Saccharolobus islandicus REY15A represents one of the very few archaeal models with versatile genetic tools,which include efficient genome editing,gene silencing,and robust protein expression systems.However,plasmid vectors constructed for this crenarchaeon thus far are based solely on the pRN2 cryptic plasmid.Although this plasmid coexists with pRN1 in its original host,early attempts to test pRN1-based vectors consistently failed to yield any stable host-vector system for Sa.islandicus.We hypothesized that this failure could be due to the occurrence of CRISPR immunity against pRN1 in this archaeon.We identified a putative target sequence in orf904 encoding a putative replicase on pRN1(target N1).Mutated targets(N1a,N1b,and N1c)were then designed and tested for their capability to escape the host CRISPR immunity by using a plasmid inter-ference assay.The results revealed that the original target triggered CRISPR immunity in this archaeon,whereas all three mutated targets did not,indicating that all the designed target mutations evaded host immunity.These mutated targets were then incorporated into orf904 individually,yielding corresponding mutated pRN1 backbones with which shuttle plasmids were constructed(pN1aSD,pN1bSD,and pN1cSD).Sa.islandicus transformation revealed that pN1aSD and pN1bSD were functional shuttle vectors,but pN1cSD lost the capability for replication.These results indicate that the missense mutations in the conserved helicase domain in pN1c inactivated the replicase.We further showed that pRN1-based and pRN2-based vectors were stably maintained in the archaeal cells either alone or in combination,and this yielded a dual plasmid system for genetic study with this important archaeal model.

关键词： archaeal genetics CRISPR-Cas CRISPR escape mutations dual plasmid vectors Saccharolobus-E.coli shuttle vectors

A comprehensive review of recent advancements and developments in heat exchanger network synthesis techniques

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Science China(Technological Sciences) 2024年第2期67卷 335-356页

作者： XU Yue LIU WeiWei ZHANG Lu CUI Guo Min XIAO Yuan ZHANG guanhua YANG QiGuo School of Energy and Power Engineering University of Shanghai for Science and TechnologyShanghai 200093China

The rapid development of computational technology and the increasing energy demand have improved heat exchanger network(HEN)synthesis.The HEN synthesis involves several optimizations of matches,distributions of heat loads,and stream splitting of heat units.Thus,obtaining good results at high efficiency has been the main standard for evaluating the techniques in the research area of HEN synthesis.This paper first summarizes and analyzes the main contributions of the existing HEN synthesis techniques.To compare related data quantitively,information on ten typical cases is presented in this paper.Furthermore,recently improved solutions for commonly encountered existing literature cases demonstrate the evolution and competition trends in the field of HEN synthesis.The comparison data presented in this paper not only provide a useful reference for future research but also present the optimization directions.Based on the findings of this study,it is noted that there is still a large room for improvement,and current approaches are incapable of dealing with all HEN cases.Moreover,it is still difficult to escape a local optimum and overcome structural constraints when seeking the global optimum.As a follow-up to the current work,the parallel computing mode and adaptively coordinating the ratio of global and local searching abilities are major development trends for future investigation.

关键词： heat integration heat exchanger network synthesis sequential synthesis method simultaneous synthesis method optimization techniques development optimization quality

Electrocatalytic NAD(P)H regeneration for biosynthesis

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Green Chemical Engineering 2024年第1期5卷 1-15页

作者： Yaoxuan Li guanhua Liu Weixi Kong Suoqing Zhang Yuemei Bao Hao Zhao Lihui Wang Liya Zhou Yanjun Jiang National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization School of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300401China North China Pharmaceutical Group Corp Shijiazhuang050015China Tianjin Food Research Institute Tianjin301609China

The highly efficient chemoselectivity,stereoselectivity,and regioselectivity render enzyme catalysis an ideal pathway for the synthesis of various chemicals in broad applications.While the cofactor of an enzyme is necessary but expensive,the conversed state of the cofactor is not beneficial for the positive direction of the reaction.Cofactor regeneration using electrochemical methods has the advantages of simple operation,low cost,easy process monitoring,and easy product separation,and the electrical energy is green and sustainable.Therefore,bioelectrocatalysis has great potential in synthesis by combining electrochemical cofactor regeneration with enzymatic catalysis.In this review,we detail the mechanism of cofactor regeneration and categorize the common electron mediators and enzymes used in cofactor regeneration.The reaction type and the recent progress are summarized in electrochemically coupled enzymatic catalysis.The main challenges of such electroenzymatic catalysis are pointed out and future developments in this field are foreseen.

关键词： Biosynthesis Cofactor regeneration Bioelectrocatalysis NAD(P)H Electron mediator

Dendritic mesoporous silica nanoparticles for enzyme immobilization

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Green Chemical Engineering 2024年第2期5卷 173-186页

作者： Shuling Zhang Jing Bai Weixi Kong Haolei Song Yunting Liu guanhua Liu Li Ma Liya Zhou Yanjun Jiang School of Chemical Engineering and Technology Hebei University of TechnologyTianjin300130China College of Food Science and Biology Hebei University of Science&TechnologyShijiazhuang050018China Hebei Yanuo Bioscience Co. Ltd.Shijiazhuang052165China

Dendritic mesoporous silica nanoparticles(DMSNs)are a new class of solid porous materials used for enzyme immobilization support due to their intrinsic characteristics,including their unique open central-radial structures with large pore channels and their excellent biocompatibility.In this review,we review the recent progress in research on enzyme immobilization using DMSNs with different structures,namely,flower-like DMSNs and tree-branch-like DMSNs.Three DMSN synthesis methods are briefly compared,and the distinct characteristics of the two DMSN types and their effects on the catalytic performance of immobilized enzymes are comprehensively discussed.Possible directions for future research on enzyme immobilization using DMSNs are also proposed.

关键词： Dendritic mesoporous silica nanoparticles Enzyme immobilization Flower-like Tree-branch-like Central-radial structure

Theoretical and experimental cocrystal screening of temozolomide with a series of phenolic acids, promising cocrystal coformers

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Chinese Chemical Letters 2024年第5期35卷 407-417页

作者： Hongmei Yu Baoxi Zhang Meiju Liu Cheng Xing Guorong He Li Zhang Ningbo Gong Yang Lu guanhua Du Beijing Key Laboratory of Polymorphic Drugs Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China Beijing City Key Laboratory of Drug Target Identification and Drug Screening Institute of Materia MedicaChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

The virtual cocrystal screening approach based on molecular electrostatic potential surface(MEPS)maps is a fast and feasible computational method to estimate the probability of cocrystal formation by calculating the difference in the interaction site pairing energies of monomers and that of their assemblies prior to experimental screening.In this paper,we report 12 cocrystal forms of temozolomide with mono-,di-,and trihydroxy benzoic acids,namely,3-hydroxy-,2,4-dihydroxy-,2,5-dihydroxy-,2,6-dihydroxy-,3,4-dihydroxy-,and 3,4,5-trihydroxy-benzoic acids,as well as benzoic acid,as pharmaceutical coformers for the first time.10 single crystals out of the 12 cocrystal forms were obtained and unequivocally determined by single-crystal X-ray diffraction,which clarified spatial arrangements,molecular conformations,and supramolecular synthons.MEPS further gains some insights into the sites of hydrogen bonding interactions for exploring combination patterns in these assemblies.Modulated stability of TMZ was successfully achieved by cocrystallization with these acids.

关键词： Virtual Cocrystal Temozolomide Supramolecular synthon Phenolic acid Stability

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中国当代壁画创作现状及问题之我见

美术 2019年第10期622卷 140-141页

作者：孟冠华晋中学院美术学院

毋庸置疑,中国当代壁画已突破既往较为单一的绘制模式与呈现方式,更多的被视为一种公共艺术而存在一-如今的它,是以多元结构的绘制方式,结合与区域和建筑紧密相连的内容主题,采用多种艺术形式和综合材质,展现在公共场合的综合性艺术作品。

关键词：中国当代创作现状壁画呈现方式公共艺术多元结构内容主题艺术形式