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Tuning the selectivity of CO_(2)conversion to CO on partially reduced Cu_(2)O/ZnO heterogeneous interface

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Interdisciplinary Materials 2024年第3期3卷 380-388页

作者： Tianci Xiang Ting Liu Ting Ouyang shenlong zhao zhao-Qing Liu School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Guangzhou Key Laboratory for Clean Energy and Materials/Huangpu Hydrogen Innovation Center Guangzhou Higher Education Mega CenterGuangzhou UniversityGuangzhouGuangdongPeople's Republic of China School of Chemical and Biomolecular Engineering The University of SydneySydneyNew South WalesAustralia

The development of stable and efficient low-cost electrocatalysts is conducive to the industrialization of CO_(2).The synergy effect between the heterogeneous interface of metal/oxide can promote the conversion of CO_(2).In this work,Cu_(2)O/ZnO heterostructures with partially reduced metal/oxide heterointerfaces in Zn plates(CZZ)have been synthesized for CO_(2)electroreduction in different cationic solutions(K^(+)and Cs^(+)).Physical characterizations were used to demonstrate the heterojunction of Cu_(2)O/ZnO and the heterointerfaces of metal/oxide,electrochemical tests were used to illustrate the enhancement of the selectivity of CO_(2)to CO in different cationic *** efficiency for CO with CZZ as catalyst reaches 70.9%in K+solution(current density for CO−3.77 mA cm^(−2)and stability 24 h),and the Faraday efficiency for CO is 55.2%in Cs^(+)solution(−2.47 mA cm^(−2)and 21 h).In addition,in situ techniques are used to elucidate possible reaction mechanisms for the conversion of CO_(2)to CO in K^(+)and Cs^(+)solutions.

关键词： CO CO_(2)reduction electrochemical catalysis heterogeneous interface

Optical Activity of Chiral Metal Nanoclusters

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Accounts of Materials Research 2021年第1期2卷 21-35页

作者： Yanfei Zhu Jun Guo Xueying Qiu shenlong zhao Zhiyong Tang CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China The University of Sydney School of Chemical and Biomolecular EngineeringSydneyNSW 2006Australia

CONSPECTUS:The emerging chirality in nanomaterials represents one of the most dynamic areas in modern *** many novel chiral nanomaterials have been reported,the origin of their chirality and related optical activity have been not unveiled *** to the fast development of noble metal cluster chemistry,the structures of many chiral nanoclusters(CNCs)have been precisely determined and their chirality origin has been decoded as four different levels including chiral ligand,helix staple motif,asymmetry metal kernel,and chiral arrangement of organic ***,the strong optical activity associated with the electron transitions of the noble metal core is popularly reported among CNCs protected by chiral ligands,following the so-called“outside-in”chirality transfer theory,namely,from organic ligand to metal ***,inherent chiral structures are discerned inside CNCs consisting of achiral ligands,such as the helix staples found in Au38(SR)24 and Au102(SR)44(SR=thiolate)and the chiral metal kernel existing in Au20(PP3)4Cl4(PP3=tris(2-(diphenylphosphino)ethyl)phosphine).These chiral nanostructures induce distinct optical activity and even present reversed chirality transformation in the case of Au38(SR)24(i.e.,from chiral core structure to organic ligand).In the past decade,our group has carried out extensive research work on preparation,enantioseparation,optical activity,and application of chiral inorganic *** representatives,enantiopure right-handed and left-handed Au20(PP3)4Cl4 clusters of intrinsic kernel chirality were acquired through an innovative supramolecular self-assembly method and their circular dichroism(CD)feature involving only the metal core was systematically studied;Au3[R/S-Tol-BINAP]3Cl(R/S-Tol-BINAP:R/S-2,2′-bis(di-p-tolylphosphino)-1,1′-binaphthyl)clusters with the smallest metal-atom number among the reported CNCs were designed and synthesized by using the privileged chiral Tol-BINAP ligand,wh

关键词： chiral circular kernel

Recent progress in all-inorganic metal halide nanostructured perovskites:Materials design,optical properties,and application

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Frontiers of physics 2021年第3期16卷 65-84页

作者： Lianzhen Cao Xia Liu Yingde Li Xiusheng Li Lena Du Shengyao Chen shenlong zhao Cong Wang Department of Physics and Optoelectronic Engineering Weifang UniversityWeifang261061China Division of Physics and Applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore637371Singapore CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing100190China School of Chemical and Biomolecular Engineering The University of SydneySydneyNew South Wales2006Australia College of Mathematics and Physics Beijing University of Chemical TechnologyBeijing100029China

Low-dimensional all-inorganic metal halide perovskite(AIMHP)materials,as a new class of nanomaterials,hold great promise for various optoelectronic *** the past few years,tremendous progress has been achieved in the development of efficient and stable AIMHP nanomaterials for optical property studies and related ***,we offer a critical overview on the unique merits and the state-of-the-art design of AIMHP using different composition ***,the effects of material compositions,dimensionality,morphologies and structures on optical properties are *** also comprehensively present recent advances in the development AIMHP nanomaterials for practical applications including solar cells,light-emitting diodes,lasers and ***,the critical challenges and future opportunities in this emerging field are highlighted.

关键词： inorganic perovskite nano-structure materials design optical properties applications

Carbon-supported layered double hydroxide nanodots for efficient oxygen evolution: Active site identification and activity enhancement

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Nano Research 2021年第9期14卷 3329-3336页

作者： shenlong zhao Detao Zhang Shuai Jiang Yanglansen Cui Haijing Li Juncai Dong Zhirun Xie Da-Wei Wang Rose Amal Zhenhai Xia Liming Dai Australian Carbon Materials Centre(A-CMC) School of Chemical EngineeringThe University of New South WalesSydneyNSW 2052Australia Center of Advanced Science and Engineering for Carbon(Case4Carbon) Department of Macromolecular Science and EngineeringCase Western Reserve University(CWRU)10900 Euclid AvenueClevelandOH 44106USA School of Chemical and Biomolecular Engineering The University of SydneySydneyNSW 2006Australia Department of Materials Science and Engineering University of North TexasDentonTX 76203USA Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Chemical Engineering The University of New South WalesSydneyNSW 2052Australia

In this study,we developed a novel confinement-synthesis approach to layered double hydroxide nanodots(LDH-NDs)anchored on carbon nanoparticles,which formed a three-dimensional(3D)interconnected network within a porous carbon support derived from pyrolysis of metal-organic frameworks(C-MOF).The resultant LDH-NDs@C-MOF nonprecious metal catalysts were demonstrated to exhibit super-high catalytic performance for oxygen evolution reaction(OER)with excellent operation stability and low overpotential(-230 mV)at an exchange current density of 10 mA·cm^(-2).The observed overpotential for the LDH-NDs@C-MOF is much lower than that of large-sized LDH nanosheets(321 mV),pure carbonized MOF(411 mV),and even commercial RuO_(2)(281 mV).X-ray absorption measurements and density functional theory(DFT)calculations revealed partial charge transfer from Fe^(3+)through an O bridge to Ni^(2+)at the edge of LDH-NDs supported by C-MOF to produce the optimal binding energies for OER ***,coupled with a large number of exposed active sides and efficient charge and electrolyte/reactant/product transports associated with the porous 3D C-MOF support,significantly boosted the OER performance of the LDH-ND catalyst with respect to its nanosheet *** from the fact that this is the first active side identification for LDH-ND OER catalysts,this work provides a general strategy to enhance activities of nanosheet catalysts by converting them into edge-rich nanodots to be supported by 3D porous carbon architectures.

关键词： carbon nanomaterials layered double hydroxide(LDH)nanodots metal-organic framework(MOF)derivatives oxygen evolution reaction

多金核二氧化铈空心球用于硝基苯酚催化加氢（英文）

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催化学报 2015年第3期36卷 261-267页

作者：赵昆齐健赵慎龙唐红杰尹华杰宗玲博常琳高燕于然波唐智勇北京科技大学冶金与生态工程学院冶金物理化学系北京100083 国家纳米科学中心纳米系统与多级次制造重点实验室北京100190 中国科学院过程工程研究所多相复杂系统国家重点实验室北京100190

催化剂的微观结构在催化还原反应、有机物氧化反应及有机物转化反应中起着关键作用.本文利用无模板方法合成了多金核中空二氧化铈微球催化剂.将制备好的二氧化铈中空微球浸渍到一定浓度的氯金酸溶液中,然后多次洗涤除去表面吸附的氯金... 详细信息

催化剂的微观结构在催化还原反应、有机物氧化反应及有机物转化反应中起着关键作用.本文利用无模板方法合成了多金核中空二氧化铈微球催化剂.将制备好的二氧化铈中空微球浸渍到一定浓度的氯金酸溶液中,然后多次洗涤除去表面吸附的氯金酸离子,最后通过硼氢化钠还原制成中空氧化铈微球包覆的多金核的核壳结构催化剂.将该核壳结构材料用于硝基苯酚加氢反应与金纳米粒子及氧化铈微球相比,多金核中空二氧化铈核壳结构表现出优越的活性和稳定性.通过这种浸渍洗涤再还原的简单方法合成的多金核二氧化铈催化剂有望应用于生物医药和能源环境等领域.

关键词：多金核二氧化铈空心球硝基苯酚催化还原

SP超脉冲等离子双极气化电切与等离子双极气化电切的比较

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临床泌尿外科杂志 2009年第5期24卷 379-380页

作者：李伟施宗伟邹利文赵声龙陈晓竹刘赟王剑云南省昭通市第一人民医院泌尿外科云南昭通657000

目的:讨论SP超脉冲等离子双极气化电切(PKSP)与等离子双极气化电切(PK)两种等离子电切方式治疗BPH的效果及安全性。方法:在我院经PK治疗的1 800余例BPH患者及PKSP治疗的60余例患者中,取条件相近的各60例患者,就手术时间、术中出血量、... 详细信息

目的:讨论SP超脉冲等离子双极气化电切(PKSP)与等离子双极气化电切(PK)两种等离子电切方式治疗BPH的效果及安全性。方法:在我院经PK治疗的1 800余例BPH患者及PKSP治疗的60余例患者中,取条件相近的各60例患者,就手术时间、术中出血量、术后膀胱冲洗时间、留置导尿管时间、手术的安全性、术后并发症的发生及疗效等进行比较。结果:两组留置导尿管时间相似,手术时间PKSP较减少1/3以上,术中出血量、术后冲洗时间及术后并发症发生率PKSP低于PK(P<0.05),尤其继发出血明显减少,术后疗效两组无明显差异。结论:PKSP是一种更为理想的等离子双极气化电切,安全性更好,有较为理想的前景。

关键词：前列腺增生超脉冲等离子双极气化电切等离子双极气化电切

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基于ANSYS的汽车膜片弹簧参数化建模

机械工程师 2016年第8期 170-172页

作者：李慎龙赵恩乐中国北方车辆研究所北京电动车辆协同创新中心北京100072 合肥工业大学机械与汽车工程学院合肥230009

从膜片弹簧几何结构参数中抽象出表征其结构的参数,利用VB语言设计出供设计人员修改参数的人机界面,生成ANSYS APDL命令流文本文件,对系列化的膜片弹簧参数化有限元建模并进行静力学分析。选择两组膜片弹簧的参数,对小端施加零位移约束... 详细信息

从膜片弹簧几何结构参数中抽象出表征其结构的参数,利用VB语言设计出供设计人员修改参数的人机界面,生成ANSYS APDL命令流文本文件,对系列化的膜片弹簧参数化有限元建模并进行静力学分析。选择两组膜片弹簧的参数,对小端施加零位移约束,大端施加指定位移约束,得到膜片弹簧C1和C2的von Mises应力和应变结果,验证了参数化建模程序建立的膜片弹簧有限元分析模型能满足静载分析要求。

关键词：参数化膜片弹簧 ANSYS APDL命令流

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系统合理化何以形成——三种不同的解释视角

心理科学进展 2018年第12期26卷 2238-2248页

作者：杨沈龙郭永玉喻丰饶婷婷赵靓许丽颖西安交通大学人文社会科学学院社会心理学研究所西安710049 南京师范大学心理学院南京210097

系统合理化理论认为,人们会自然地将其所在的社会系统感知为公平合理的,这一倾向即系统合理化。而系统合理化形成之原因,一直是该领域理论和研究关注的重点。为此,研究者先后提出了三种解释思路。认知失调视角认为,系统合理化之所以产... 详细信息

系统合理化理论认为,人们会自然地将其所在的社会系统感知为公平合理的,这一倾向即系统合理化。而系统合理化形成之原因,一直是该领域理论和研究关注的重点。为此,研究者先后提出了三种解释思路。认知失调视角认为,系统合理化之所以产生是因为个体想要缓解因系统无法满足他们的需求而产生的焦虑。补偿性控制视角认为,系统合理化源于个体自身控制感的缺乏。社会认知视角则认为人们固有的认知倾向特别是对于社会经济差异的内归因倾向是造成系统合理化的根源。未来可以考虑在同一个研究中包含来自于不同理论视角的解释变量,借鉴相近领域的发现探索其他可能存在的系统合理化的形成机制,探究中国文化特有的系统合理化的来源,同时对积极的合理化与消极的合理化作出区分,并在此基础上针对社会现实问题加强应用研究的开展。

关键词：系统合理化认知失调补偿性控制社会认知

超声振动对W形金属密封环滚压成形不均匀变形的影响

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稀有金属材料与工程 2024年第4期53卷 1103-1110页

作者：郭正华史明智赵刚要张冉阳吴庆捷吴新洲李神龙南昌航空大学航空制造工程学院江西南昌330063 中国航发长江动力有限公司湖南岳阳414000

为了提高W形金属密封环的成形质量,对W形金属密封环的超声振动滚压成形过程进行了研究。基于ABAQUS/Explicit有限元仿真软件,搭建了W形金属密封环超声振动辅助滚压成形三维有限元模型,研究了超声频率对环件不均匀变形的影响。结果表明:... 详细信息

为了提高W形金属密封环的成形质量,对W形金属密封环的超声振动滚压成形过程进行了研究。基于ABAQUS/Explicit有限元仿真软件,搭建了W形金属密封环超声振动辅助滚压成形三维有限元模型,研究了超声频率对环件不均匀变形的影响。结果表明:随着超声频率的增加,环件的应力不均匀度呈现先增后减的规律;环件的应变不均匀度呈现先略微减小,然后激增,再减小的规律;壁厚不均匀度呈现先减小,后增大,再减小的趋势。其中在超声频率为30与40 kHz时环件变形不均匀程度显著增大,这是由于环件产生了起皱现象造成的;通过对截面的应力、应变和壁厚不均匀分析,证明了波峰与波谷位置是成形过程中的关键部位。

关键词：超声振动滚压成形高温合金壁厚减薄率 W形密封环