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Recent advances on bismuth oxyhalides for photocatalytic CO_(2)reduction

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Journal of Environmental Sciences 2024年第6期140卷 183-203页

作者： Liangpang xu jimmy C.Yu Ying Wang Department of Chemistry The Chinese University of Hong KongShatinNew TerritoriesHong Kong 999077China

Photocatalytic conversion of CO_(2)into fuels such as CO,CH_(4),and CH_(3)OH,is a promising approach for achieving carbon *** oxyhalides(BiOX,where X=Cl,Br,and I)are appropriate photocatalysts for this purpose due to the merits of visible-light-active,efficient charge separation,and easy-to-modify crystal structure and surface *** practical applications,multiple strategies have been proposed to develop high-efficiency BiOX-based *** review summarizes the development of different approaches to prepare BiOX-based photocatalysts for efficient CO_(2)*** the review,the fundamentals of photocatalytic CO_(2)reduction are ***,several widely used modification methods for BiOX photocatalysts are systematacially discussed,including heterojunction construction,introducing oxygen vacancies(OVs),Bi-enrichment,heteroatom-doping,and morphology ***,the challenges and prospects in the design of future BiOX-based photocatalysis for efficient CO_(2)reduction are examined.

关键词： Bismuth oxyhalides Photocatalysis CO_(2)reduction Modification methods

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非线性有机材料DAST的研究及应用

光谱学与光谱分析 2019年第3期39卷 665-672页

作者：谷雨许向东连宇翔李欣荣范凯成晓梦王福戴泽林 xu jimmy 电子科技大学光电科学与工程学院四川成都610054 School of Engineering Brown University

随着光通信、光信息处理技术等的快速发展,非线性光学材料越来越受到学术界与工业的关注。与无机非线性光学材料相比,有机非线性光学材料具有响应时间短、易于加工和高非线性系数等优点。其中, 4-(4-二甲氨基苯乙烯基)甲基吡啶对甲苯磺... 详细信息

随着光通信、光信息处理技术等的快速发展,非线性光学材料越来越受到学术界与工业的关注。与无机非线性光学材料相比,有机非线性光学材料具有响应时间短、易于加工和高非线性系数等优点。其中, 4-(4-二甲氨基苯乙烯基)甲基吡啶对甲苯磺酸盐(DAST)是人工设计的一种具有非中心对称性和较强极化率的有机非线性材料。大量理论和实验结果表明, DAST具有高二阶光学非线性系数、高电光系数、大双折射率差和低介电常数等特性,能够产生更快、更强的光学非线性响应,还具有优异的太赫兹波发射及吸收性能,是目前综合性能最优、应用最广、最具研究价值的非线性有机材料。近年光谱研究显示, DAST还表现出各向异性的太赫兹光谱特性。文章系统地总结了DAST晶体在太赫兹波发射、二次谐波产生、电光探测和电光调制等众多领域的国内外研究成果,还概括了我们团队近期在DAST基薄膜、太赫兹光谱、光电特性、超材料等新领域的研究进展。此外,还提出将准相位匹配法用于DAST晶体研究、利用电场或自组装膜诱导生长DAST晶体等新思路。对DAST成果的总结和梳理,将促进非线性DAST有机材料在电光调制器、频率转换器、 THz探测器等重要领域的应用与理论研究,使其能够更加广泛地应用在光通信、光信息处理、军事技术等重要领域。

关键词： DAST 非线性有机材料太赫兹光谱性能应用

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加国移民途径的选择

出国与就业 2001年第2期 25-25页

作者： jimmy xu

曾经有人开门见山地问:“联邦移民和魁省移民哪个更容易?”泛泛讲来,联邦移民、魁省移民、曼省移民还有即将出台的新布朗士威克省移民,好像没有哪一个更容易的问题。这几个移民途径自成体系,各有不同之处,决定移民前要根据自身条件对照... 详细信息

曾经有人开门见山地问:“联邦移民和魁省移民哪个更容易?”泛泛讲来,联邦移民、魁省移民、曼省移民还有即将出台的新布朗士威克省移民,好像没有哪一个更容易的问题。这几个移民途径自成体系,各有不同之处,决定移民前要根据自身条件对照它们的标准加以衡量,然后择优选用。以投资移民为例,联邦和魁省均于去年4月1日起将投资额提高至40万加元,个人总资产提高至80万加元,投

关键词：投资证书申请人财政管理联邦国家结构魁北克加拿大

Woody plant cell walls:Fundamentals and utilization

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Molecular Plant 2024年第1期17卷 112-140页

作者： Wei Li Ying-Chung jimmy Lin Ying-Lan Chen Chenguang Zhou Shuang Li Nette De Ridder Dyoni M.Oliveira Lanjun Zhange Baocai Zhang Jack P.Wang Changzheng xu Xiaokang Fu Keming Luo Ai-Min Wu Taku Demura Meng-Zhu Lu Yihua Zhou Laigeng Li Toshiaki Umezawa Wout Boerjan Vincent L.Chiang State Key Laboratory of Tree Genetics and Breeding Northeast Forestry UniversityHarbin 150040China Department of Life Science National Taiwan UniversityTaipeiTaiwanChina Department of Biotechnology and Bioindustry Sciences College of Bioscience and BiotechnologyNational Cheng Kung UniversityTainanTaiwanChina Department of Plant Biotechnology and Bioinformatics Ghent UniversityTechnologiepark 719052 GhentBelgium VIB Center for Plant Systems Biology Technologiepark 719052 GhentBelgium State Key Laboratory of Plant Genomics Insttute of Genetics and Developmental Biology Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Forest Biotechnology Group Department of Forestry and Environmental ResourcesNorth Carolina State UniversityRaleighNC 27695USA Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation Integrative Science Center of Germplasm CreationSchool of Life SciencesSouthwest UniversityChongqing 400715China Guangdong Key Laboratory for Innovative Developmentand Utilization of Forest Plant Germplasm College of Forestry and Landscape ArchitecturesSouth China Agricultural UniversityGuangzhou510642China Center for Digital Green-innovation Nara Institute of Science and TechnologykomaNara 630-0192Japan State Key Laboratory of Subtropical Siviculture College of Forestry and BiotechnologyZhejang A&F UniversityHangzhou 311300China CAS Center for Excellence in Molecular Plant Sciences Chinese Academy of Sciences300 Fenglin RoadShanghai 200032China Laboratoryof MetabolicScienceofForest Plants and Microorganisms Rsearch Institute for Sustainable HumanosphereKyoto UniversityUjiKyoto 611-0011 Japan

Cell walls in plants,particularly forest trees,are the major carbon sink of the terrestrial *** and biosynthetic features of plant cell walls were revealed early on,focusing mostly on herbaceous model *** developments in genomics,transcriptomics,epigenomics,transgenesis,and associated analytical techniques are enabling novel insights into formation of woody cell ***,we review multilevel regulation of cell wall biosynthesis in forest tree *** highlight current approaches to engineering cell walls as potential feedstock for materials and energy and survey reported field tests of such engineered transgenic *** outline opportunities and challenges in future research to better understand cell type biogenesis for more efficient wood cell wall modification and utilization for biomaterials or for enhanced carbon capture and storage.

关键词： regulation of cell wall formation biosynthesis of cell wall components lignin cellulose hemicellulose cell wall utilization

Coordinated Buckling of Thick Multi-Walled Carbon Nanotubes Under Uniaxial Compression

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Nano Research 2010年第1期3卷 32-42页

作者： xu Huang Hongyan Yuan K.jimmy Hsia Sulin Zhang Department of Engineering Science and Mechanics The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Mechanical Science and Engineering University of IllinoisUrbanaIL 61801USA

Using a generalized quasi-continuum method,we characterize the post-buckling morphologies and energetics of thick multi-walled carbon nanotubes(MWCNTs)under uniaxial *** simulations identify for the first time evolving post-buckling morphologies,ranging from asymmetric periodic rippling to a helical diamond *** attribute the evolving morphologies to the coordinated buckling of the constituent *** post-buckling morphologies result in significantly reduced effective moduli that are strongly dependent on the aspect *** simulation results provide fundamental principles to guide the future design of high-performance,MWCNT-based nanodevices.

关键词： Carbon nanotubes buckling uniaxial compression rippling

Ultrastable single-atom gold catalysts with strong covalent metal-support interaction （CMSI）

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Nano Research 2015年第9期8卷 2913-2924页

作者： Botao Qiao Jin-Xia Liang Aiqin Wang Cong-Qiao xu Jun Li Tao Zhang Jingyue (jimmy) Liu Department of Physics Arizona State University Tempe Arizona 85287 USA State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China Department of Chemistry & Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education Tsinghua University Beijing 100084 China Guizhou Provincial Key Laboratory of Computational Nano-Material Science Guizhou Normal College Guiyang 550018 China

Supported noble metal nanoparticles （including nanoclusters） are widely used in many industrial catalytic processes. While the finely dispersed nanostructures are highly active, they are usually thermodynamically unstable and tend to aggregate or sinter at elevated temperatures. This scenario is particularly true for supported nanogold catalysts because the gold nanostructures are easily sintered at high temperatures, under reaction conditions, or even during storage at ambient temperature. Here, we demonstrate that isolated Au single atoms dispersed on iron oxide nanocrystallites （Aul/FeOx） are much more sintering- resistant than Au nanostructures, and exhibit extremely high reaction stability for CO oxidation in a wide temperature range. Theoretical studies revealed that the positively charged and surface-anchored Aul atoms with high valent states formed significant covalent metal-support interactions （CMSIs）, thus providing the ultra-stability and remarkable catalytic performance. This work may provide insights and a new avenue for fabricating supported Au catalysts with ultra-high stability.

关键词： single-atom catalysis,goId catalyst,CO oxidation,covalent metal-supportinteraction

Superior activity of Rh1/ZnO single-atom catalyst for CO oxidation

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Chinese Journal of Catalysis 2019年第12期40卷 1847-1853页

作者： Bing Han Rui Lang Hailian Tang Jia xu Xiang-Kui Gu Botao Qiao Jingyue(jimmy)Liu CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Department of Physics Arizona State UniversityTempeArizona 85287United States Department of Chemical Engineering and Materials Science Wayne State UniversityDetroitMI 48202United States Dalian National Laboratory for Clean Energy CASDalian 116023LiaoningChina

CO oxidation is of great importance in both fundamental study and industrial *** noble metal catalysts are highly active for CO oxidation but suffer from the scarcity and high ***-atom catalysts(SACs)can maximize the metal atom ***,ZnO nanowire(ZnO-nw)supported Rh,Au,and Pt SACs were successfully developed to investigate their CO oxidation ***,it was found that Rh1/ZnO-nw showed much higher activity than the other noble metals which are usually regarded as good candidates for CO *** addition,the Rh SAC possessed high stability in high-temperature CO oxidation under simulated conditions in the presence of water and *** high activity and stability make Rh1/ZnO-nw promising for practical applications,especially in the automotive exhaust emission *** calculations indicate that the CO oxidation proceeds via the Mars-van Krevelen mechanism and the lowest barrier for the rate-limiting O2 dissociation at a surface oxygen vacancy site is a key factor in determining the observed highest activity of Rh1/ZnO-nw amongst the studied SACs.

关键词： Single-atom catalysis Carbon monoxide oxidation Rhodium Zinc oxide nanowire Density functional theory calculations

当代教师教育纵横谈——专访哈佛大学教育研究生院凯瑟琳·博尔斯博士

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河北师范大学学报（教育科学版） 2010年第4期12卷 25-29页

作者：徐莉吉米.辛普森河北师范大学河北省中小学教师继续教育中心河北石家庄050091 美国哈佛大学教育研究生院

凯瑟琳·博尔斯(Katherine C Boles)博士从70年代起一直从事小学、中学,以及大学的课堂教学,现任哈佛大学教授和"教师与领导艺术"和"教与学"教学项目主任。除了执教,她还发表、出版了许多关于学校改革、教师教育以及教师领导新形式方面... 详细信息

凯瑟琳·博尔斯(Katherine C Boles)博士从70年代起一直从事小学、中学,以及大学的课堂教学,现任哈佛大学教授和"教师与领导艺术"和"教与学"教学项目主任。除了执教,她还发表、出版了许多关于学校改革、教师教育以及教师领导新形式方面的文章和书籍。她提倡通过政府教育政策的变化,来对教育领域进行改组;主张实行职业阶梯制,给予教师职业晋级的机会,基于教师的工作成就给予加薪,从而提高教师在社会上的地位。她创建了教学结合培训学校,这所教师职业发展学校把波斯顿和布鲁克林地区的公立学校和威洛克大学、西蒙斯大学连接起来,相互促进。在美国教育界,有一本非常有影响的教师教育专著,题为"谁正在教你的孩子?为何教学危机比你想象的要更糟,我们该如何应对?"(Who’s teaching your children?why the Teacher Crisisis worse Than you Think and What Can be Done about it)。这本书就是她的同行维维安娜.特伦(Vivian Troen)和她合著的,这本书对教育职业改组和教师发展进行了深入的评述,由耶鲁大学出版社于2003年2月出版。现一直为哈佛的教科书,也是美国所有城市学校校长、教师必读书。该书指出美国教育的许多问题来源于够格老师的严重短缺,这种教师危机由于种种对改革的阻碍而变得更糟。该书揭示了造成这些危机的种种原因,并提出了改革措施。主张把教书变成一个有盼头的职业,要给教师搭建一个有吸引力的事业发展阶梯,吸引更多的优秀人才来从教。大学也必须改进教学质量,从而课堂里才会看到受到过良好教育的教师,教书这门行业才会得到改进。凯瑟琳.博尔斯教授是一位拥有二十多年的各级各类学校的教学实践经验的教师,又是一位勤奋、有成就的学者,她对于美国的教师教育有着独到的见解,其观点在国际教育界产生了一定影响。河北师范大学徐莉编审利用在哈佛大学访学之际,在吉米.辛普森(jimmy Simpson哈佛大学教育研究生院在读硕士研究生)协助下,对博尔斯教授进行了耗时数月的专访,并整理成访谈录。本刊对该访谈录进行了精简加工,现予刊出,以飨读者,望能对国内同仁思考我国教师教育改革与发展有一定的启发作用。

关键词：教师教育大学教育研究生院博士培训学校课堂教学领导艺术教育政策

Oxygen Transfer and Hydrodynamics in a Flexible Fibre Biofilm Reactor for Wastewater Treatment

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Chinese Journal of Chemical Engineering 2009年第5期17卷 879-882页

作者：陈育如虞启明徐红卫陈雁 Jiangsu Engineering and Technology Research Center for Microbiology College of Life Science Nanjing Normal University Nanjing 210046 China Environmental Engineering Griffith School of Engineering Griffith University Nathan Campus Brisbane Queensland 4111 Australia Institute of Environmental Science Nanjing Normal University Nanjing 210097 China

A flexible fibre biofilm reactor was developed for treatment of organic *** hydrodynamic characteristics and mass transfer coefficients of oxygen were studied and compared with those of the conventional activated sludge *** experiments were performed to obtain the residence time distributions of the *** results indicated that both reactors could be treated as mixed flow *** effects of flow rates of water and air on the overall mass transfer coefficient of oxygen were investigated,and the correlations between the mass transfer coefficient and the ratio of flow rates were *** to the conventional activated sludge reactor,the mass transfer coefficients in the flexible fibre reactor were similar to but slightly lower,and less sensitive to the variation in the ratio of flow *** indicated that the fibre packing in the reactor hindered the oxygen transfer to some extent.

关键词： flexible fibre biofilm reactor oxygen mass transfer coefficient activated sludge process wastewater treatment