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Polyoxometalates based compounds for green synthesis of aldehydes and ketones

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中国化学快报:英文版 2023年第8期34卷 90-101页

作者： Kejie Qin dejin zang Yongge Wei School of Pharmacy and Pharmaceutical Sciences&Institute of Materia Medica Shandong First Medical University&Shandong Academy of Medical SciencesNHC Key Laboratory of biotechnology drugs(Shandong Academy of Medical Sciences)Key Lab for Rare&Uncommon Diseases of Shandong ProvinceJi’nan 250117China Key Lab of Organic Optoelectronics&Molecular Engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China

Molecular oxygen within Polyoxometalates(POMs)based compounds are ideal oxidants with high atom economy and its use results in the production of water as the only *** progress has been made in the development of catalytic methods for aerobic alcohol oxidation to have aldehydes and ketones with POMs based *** are alternative to the use of traditional hypervalent iodine catalyst systems which are with molecular oxygen as a terminal ***,POMs based catalysts can be applied to catalytic reactions with different modes of energization such as thermocatalysis,photocatalysis and *** review summarizes the frontier advances in polyoxometalates for catalytic alcohol selective oxidation in thermocatalytic,electrocatalytic,and photocatalytic *** three advantages of POM catalysts in terms of performance,economy,and environmental protection are *** include the use of sol-gel and electrostatic assembly methods to increase the reaction surface area,reduce the use of precious metals,and improve the stability of POMs *** field of selective alcohol oxidation is ***,the challenges of preparing more efficient and“green”catalysts are presented.

关键词： Polyoxometalates Alcohol oxidation Thermocatalysis Photocatalysis Electrocatalysis Aldehydes Ketones

Confined interface engineering of self-supported Cu@N-doped graphene for electrocatalytic CO_(2) reduction with enhanced selectivity towards ethanol

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Nano Research 2022年第10期15卷 8872-8879页

作者： dejin zang Xuejiao JGao Leyun Li Yongge Wei Haiqing Wang Institute of Materia Medica Shandong First Medical University&Shandong Academy of Medical SciencesJinan 250117China Institute for Advanced Interdisciplinary Research(iAIR) School of Chemistry and Chemical EngineeringUniversity of JinanJinan 250022China College of Chemistry and Chemical Engineering Jiangxi Normal UniversityNanchang 330022China Key Lab of Organic Optoelectronics&Molecular Engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China

Electroreduction of greenhouse gas CO_(2) into value-added fuels and chemicals provides a promising pathway to address the issues of energy crisis and environmental ***,the regulations of the selectivity towards C2 product and the competing hydrogen evolution reaction(HER)are major challenges for CO_(2) reduction reaction(CO_(2)RR).Here,we develop an interface-enhanced strategy by depositing a thin layer of nitrogen-doped graphene(N-G)on a Cu foam surface(Cu-N-G)to selectively promote the ethanol pathway in CO_(2)*** to the undetectable ethanol selectivity of pure Cu and Cu@graphene(Cu-G),Cu-N-G has boosted the ethanol selectivity to 33.1%in total Faradic efficiency(FE)at−0.8 V *** hydrogen electrode(RHE).The experimental and density functional theory(DFT)results verify that the interconnected graphene coating can not only serve as the fast charge transport channel but also provide confined nanospace for mass *** N doping can not only trigger the intrinsic interaction between N in N-G and CO_(2) molecule for enriching the local concentration of reactants but also promote the average valence state of Cu for C–C coupling *** confinement effect at the interface of Cu-N-G can not only provide high adsorbed hydrogen(Had)coverage but also stabilize the key*HCCHOH intermediate towards ethanol *** provided interface-enhanced strategy herein is expected to inspire the design of Cubased CO_(2)RR electrocatalysts towards multi-carbon products.

关键词： CO_(2)reduction Cu-based catalyst Cu/N-doped carbon interface engineering C2 production

烟台市城区挥发性有机物污染特征及其对臭氧影响分析

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中国无机分析化学 2024年第10期14卷 1378-1385页

作者：王少伟李明潘芋燕李少飞徐洪伟张彦臧德进山东省烟台生态环境监测中心山东烟台264000 北京工业大学城市建设学部北京100124 宾夕法尼亚州立大学斯泰特科利奇16082 济南大学化学化工学院济南250022 山东省医学科学院药物研究所济南250117

为研究烟台市城区挥发性有机物(VOCs)污染特征,基于2020、2022年烟台市城区VOCs监测数据,分析了VOCs化学组成、浓度特征、臭氧生成潜势(OFP)及污染物来源。结果显示,2020—2022年,烟台市城区VOCs体积浓度呈下降趋势(-12.4%),归功于含氧... 详细信息

为研究烟台市城区挥发性有机物(VOCs)污染特征,基于2020、2022年烟台市城区VOCs监测数据,分析了VOCs化学组成、浓度特征、臭氧生成潜势(OFP)及污染物来源。结果显示,2020—2022年,烟台市城区VOCs体积浓度呈下降趋势(-12.4%),归功于含氧挥发性有机物(OVOCs)浓度大幅降低(-33.1%),臭氧前体物(PAMS)浓度保持稳定;物种浓度结果表明,烷烃和醛类分列PAMS和OVOCs体积浓度首位,体积浓度最高的3种组分为甲醛、乙烷和丙烷,质量浓度最高的3种组分为正己烷、甲醛和丙烷;时间分布特征表明,PAMS和OVOCs体积浓度波动较大,高浓度值易出现于7月和8月。烟台市OFP总值同样呈下降趋势,较2020年降低了14.0%,其中各类型VOCs的OFP值表现为醛类>烯烃>烷烃>芳香烃>酮类>炔烃,贡献值前三位合计占比为88.2%。根据OFP计算值,甲醛、乙醛一直为烟台市城区环境空气O_(3)生成贡献前两位,烟台市臭氧防控应重点关注甲醛、乙醛、2-甲基-1,3-丁二烯、乙烯、丙烯5种组分。来源解析结果显示,烟台市VOCs来源为老化气团传输,其中甲醛、乙醛主要来自于受机动车尾气和人为源,而芳香烃主要来源于机动车尾气和燃煤/生物质共同作用,其中机动车影响更为显著。研究结果为制定VOCs排放和O_(3)污染防控措施提供了科学依据,建议烟台市综合VOCs浓度特征、物种特征、时间分布特征和化学反应活性分析等因素,对人为源排放(尤其是机动车)和燃煤/生物质进行精准管控,提升烟台市环境空气质量。

关键词：臭氧挥发性有机物臭氧生成潜势来源解析

Microsnoop: A generalist tool for microscopy image representation

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The Innovation 2024年第1期5卷 109-117页

作者： dejin Xun Rui Wang Xingcai Zhang Yi Wang Pharmaceutical Informatics Institute College of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China State Key Lab of Computer-Aided Design&Computer Graphics Zhejiang UniversityHangzhou 310058China John A.Paulson School of Engineering and Applied Sciences Harvard UniversityCambridgeMA 02138USA Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University Hangzhou 310018China National Key Laboratory of Chinese Medicine Modernization Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100China

Accurate profiling of microscopy images from small scale to high throughput is an essential procedure in basic and applied biological ***,we present Microsnoop,a novel deep learning–based representation tool trained on large-scale microscopy images using masked self-supervised *** can process various complex and heterogeneous images,and we classified images into three categories:single-cell,full-field,and batch-experiment *** benchmark study on 10 high-quality evaluation datasets,containing over 2,230,000 images,demonstrated Microsnoop’s robust and state-ofthe-art microscopy image representation ability,surpassing existing generalist and even several custom *** can be integrated with other pipelines to perform tasks such as superresolution histopathology image and multimodal ***,Microsnoop can be adapted to various hardware and can be easily deployed on local or cloud computing *** will regularly retrain and reevaluate the model using communitycontributed data to consistently improve Microsnoop.

关键词： hardware image representation

Applications of flexible electrochemical electrodes in wastewater treatment:A review

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Chinese Chemical Letters 2024年第8期35卷 84-92页

作者： Jiqing Liu Qi Dang Liting Wang dejin Wang Liang Tang Key Laboratory of Organic Compound Pollution Control Engineering(MOE) School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China School of Resources and Environment Anqing Normal UniversityAnqing 246011China

The advancement of energy storage technology has paved the way for the application of electrochemi-cal processes in achieving low-carbon and precise environmental pollution *** play a crucial role in efficiently removing organic pollutants and heavy *** implement electrochemical pollution control technology in practical engineering,flexible electrode preparation is *** review highlights recent progress in flexible electrode research,focusing on the selection and structural design of flexible electrode *** summarizes the latest advancements in current collectors,active mate-rials,and preparation methods to enhance conductivity,flexibility,and cycle *** application of flexible electrodes in water pollution control is categorized into three aspects:Organic pollutants,inor-ganic pollutants,and composite ***,the challenges and research requirements for enhanc-ing electrode flexibility in environmental governance are discussed,along with prospects for their future applications.

关键词： Flexible electrode Wastewater treatment Photoanode Removal effect Emerging contaminants

Path Planning Based on A-Star and Dynamic Window Approach Algorithm for Wild Environment

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Journal of Shanghai Jiaotong university(Science) 2024年第4期29卷 725-736页

作者： DONG dejin DONG Shiyin ZHANG Lulu CAI Yunze Department of Automation Shanghai Jiao Tong UniversityShanghai200240China Key Laboratory of System Control and Information Processing Ministry of EducationShanghai200240China Shanghai Electro-Mechanical Engineering Institute Shanghai201109China

The path planning problem of complex wild environment with multiple elements still poses *** paper designs an algorithm that integrates global and local planning to apply to the wild environmental path *** modeling process of wild environment map is *** optimization strategies are designed to improve the A-Star in overcoming the problems of touching the edge of obstacles,redundant nodes and twisting paths.A new weighted cost function is designed to achieve different planning ***,the improved dynamic window approach(DWA)is designed to avoid local optimality and improve time efficiency compared to traditional *** the necessary path re-planning of wild environment,the improved A-Star is integrated with the improved DWA to solve re-planning problem of unknown and moving obstacles in wild environment with multiple *** improved fusion algorithm effectively solves problems and consumes less time,and the simulation results verify the effectiveness of improved algorithms above.

关键词： path planning path re-planning wild environment A-Star algorithm dynamic window approach

The Identification of Phenylalanine Ammonia-Lyase(PAL)Genes from Pinus yunnanensis and an Analysis of Enzyme Activity in vitro

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Phyton-International Journal of Experimental Botany 2024年第3期93卷 503-516页

作者： dejin Mu Lin Chen Heze Wang Zhaoliu Hu Sihui Chen Shi Chen Nianhui Cai Yulan Xu Junrong Tang Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China Southwest Forestry UniversityKunming650224China College of Forestry Southwest Forestry UniversityKunming650224China

Phenylalanine ammonia lyase(PAL)is the rate-limiting and pivotal enzyme of the general phenylpropanoid path-way,but few reports have been found on PAL genes in Pinus *** the present study,three PAL genes were cloned and identiﬁed from *** seedlings for theﬁrst time,namely,PyPAL-1,PyPAL-2,and *** results indicated that the open-reading frames of PyPAL genes were 2184,2157,and 2385 *** tree analysis revealed that PyPALs have high homology with other known PAL genes in other *** vitro enzymatic analysis showed that all three PyPAL recombinant proteins could catalyze the deamination of L-phenylalanine to form trans-cinnamic acid,but only PAL1 and PAL2 can catalyze the conversion of L-tyrosine toρ-coumaric *** PyPAL genes were expressed in different tissues in 1-year-old ***,and such genes had different expression *** study lays a foundation for further understanding of the biosynthesis of secondary metabolites in ***.

关键词： Pinus yunnanensis phenylalanine ammonia-lyase enzyme activity in vitro functional analysis secondary metabolites

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多酸在电催化析氢反应中的应用研究进展

物理化学学报 2020年第1期36卷 83-102页

作者：葛靖暄胡钧朱盈婷泽妮诗臧德进秦召贤黄毅超张江威魏永革有机光电子与分子工程教育部重点实验室清华大学化学系北京100084 催化基础国家重点实验室中国科学院大连化学物理研究所辽宁大连116023

电催化水裂解是一种可持续用于生产可再生氢能源的技术。然而,开发高效稳定、低成本的析氢电催化剂仍是一项具有挑战性的任务。多金属氧酸盐(多酸)是一种离散的金属氧簇合物,通常由氧配体和高价的钒(V)、钼(VI)、钨(VI)金属构成。由于... 详细信息

电催化水裂解是一种可持续用于生产可再生氢能源的技术。然而,开发高效稳定、低成本的析氢电催化剂仍是一项具有挑战性的任务。多金属氧酸盐(多酸)是一种离散的金属氧簇合物,通常由氧配体和高价的钒(V)、钼(VI)、钨(VI)金属构成。由于多酸含有丰富的氧化还原活性金属中心,因此,近几年来,多酸在水裂解应用研究方面备受关注。本综述将聚焦于多酸在电催化水裂解析氢的应用研究进展。本文还突出强调了电催化析氢目前面临的主要问题,以及对多酸基催化剂及作为催化剂前体在电催化析氢方面的应用及发展前景做了展望。

关键词：多酸氧化还原活性位点电催化水裂解析氢反应

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汉赋中的舞蹈及汉舞的审美意蕴

四川大学学报（哲学社会科学版） 2024年第4期 120-130,214,215页

作者：尹德锦四川大学艺术学院成都610207

汉赋作为汉代最具代表性的文体,蕴含着丰富的文化内容和鲜明的时代特征,其中有关乐舞的赋文历来被视为研究美术史和艺术现象的重要资料。汉代乐舞赋以及其他诸多同时期的文论中所见对舞蹈场景丰富而细腻的描写,侧面展现出中国历史上第... 详细信息

汉赋作为汉代最具代表性的文体,蕴含着丰富的文化内容和鲜明的时代特征,其中有关乐舞的赋文历来被视为研究美术史和艺术现象的重要资料。汉代乐舞赋以及其他诸多同时期的文论中所见对舞蹈场景丰富而细腻的描写,侧面展现出中国历史上第一个舞蹈艺术高峰期的盛况。汉代乐舞百戏的兴盛为文学创作提供了大量生动的视听资源和丰富立体的审美视角,而文人们对舞蹈活动的参与也推动了舞蹈艺术在理论上的提升。汉代文人在赋体写作中巧妙地融入了身体动作的意象元素,以罗列、白描、夸饰、比喻等修辞手法诠释了舞蹈艺术形式的审美意蕴,抒发了舞蹈“气”与“体”的生命律动,这让处于汉代文学艺术高峰的汉赋扮演了汉代乐舞艺术传承媒介的角色。因而,我们可以从汉赋中挖掘出汉代舞蹈的审美意蕴,加深对这一传统艺术形式所表达的思想内涵的理解,进一步丰富中华传统文化遗产。

关键词：汉赋舞蹈元素文人活动审美意蕴