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Single-crystalline layered double hydroxides with rich defects and hierarchical structure by mild reduction for enhancing the oxygen evolution reaction

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Science China Chemistry 2019年第10期62卷 1365-1370页

作者： Peng Zhou Junying He Yuqin Zou Yanyong Wang Chao Xie Ru Chen shuangquan zang Shuangyin Wang Key Laboratory of Chem/Bio-Sensing and Chemometrics Provincial Hunan Key Laboratory for Graphene Materials and DevicesCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China College of Chemistry and Molecular Engineering Zhengzhou UniversityZhengzhou 450001China Shenzhen Institute of Hunan University Shenzhen 518057China

The oxygen evolution reaction(OER)with sluggish reaction kinetics and large overpotential is the critical reaction in water splitting that is promising for energy storage and *** double hydroxides(LDHs),due to their unique lamellar structure and flexibility of chemical component,are very competing material candidates for ***,the morphology structure and the electronic structure of LDHs were simultaneously tuned to improve the OER catalytic activity by mild solvothermal reduction using ethylene *** increased surface area,the introduction of oxygen vacancies and the construction of hierarchical structure greatly enhanced the electro-catalytic activity of LDHs for *** as-prepared LDHs showed a lower over-potential as low as 276 mV at a current density of 10 mA cm-2,and a small Tafel slope of 40.3 mV dec-1 accompanied with good *** work provides an efficient way to the design and optimization of advanced catalysts in the future.

关键词： single crystalline layered double hydroxides defects hierarchical structure oxygen evolution reaction

Enhancement of visible-light-driven oxidative amine coupling under aerobic and anaerobic conditions by photocatalyst with spatial separation of photoinduced charge carriers

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Nano Research 2023年第4期16卷 4715-4722页

作者： Shasha Wang Kuan Gao Yang Cui Shuwen Li Heyao Zhang Bin Zhang Jie Wu Hongwei Hou shuangquan zang Green Catalysis Center College of ChemistryZhengzhou UniversityZhengzhou 450001China School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China School of Science Xuchang UniversityXuchang 461000China

Spatial separation of oxidation/reduction cocatalyst is an effective means to improve the efficiency of charge separation in photocatalytic reaction ***,a yolk-shell Pd@NH_(2)-UiO-66@Cu_(2)O heterojunction was designed and synthesized by integration of electron collector Pd and hole collector Cu_(2)O inside and outside of a photoactive metal-organic framework(MOF)NH_(2)-UiO-66,*** obtained Pd@NH_(2)-UiO-66@Cu_(2)O heterojunction effectively inhibits the electron and hole recombination through the photo-induced electrons and holes flow inward and outward of the composite,and promotes the reduction and oxidation abilities for the oxidative coupling of benzylamine to *** with Pd/NH_(2)-UiO-66@Cu_(2)O,Pd@NH_(2)-UiO-66,and Pd/NH_(2)-UiO-66,Pd@NH_(2)-UiO-66@Cu_(2)O exhibits the highest photocatalytic *** importantly,Pd@NH_(2)-UiO-66@Cu_(2)O shows a conversion rate of benzylamine up to 99%either by oxidation under aerobic conditions or by strong adsorption of H atom(Hads)under anaerobic *** addition,the catalyst shows good stability and can be recycled at least ten *** work provides useful guidance on construction of MOFs-based composites with spatially separated photoinduced charge carriers to realize efficient oxidation coupling of benzylamine in both aerobic and anaerobic conditions.

关键词： metal-organic frameworks palladium nanoparticle photocatalysis cuprous oxide oxidative coupling of amines

Low-temperature plasma technology for electrocatalysis

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Chinese Chemical Letters 2019年第4期30卷 826-838页

作者： Dongdong Wang Yuqin Zou Li Tao Yiqiong Zhang Zhijuan Liu Shiqian Du shuangquan zang Shuangyin Wang State Key Laboratory of Chem/Bio-Sensing and Chemometrics Provincial Hunan Key Laboratory for Graphene Materials and Devices College of Chemistry and Chemical Engineering Hunan University College of Chemistry and Molecular Engineering Zhengzhou University

Electrochemical reactions were widely used in energy storage and conversion devices. The development of low-cost, highly efficient and stable electrocatalyst is essential to a large-scale application of energy storage and conversion devices. Recently, emerging plasma technology has been employed as one of the practical ways to synthesize and modify electrocatalysts due to its unique property. In this review, we summarized the latest applications of plasma in energy storage and conversion, including using it as the preparation and modification technology of the various electrocatalysts and the usage of it as the synthesis technology directly. Firstly, we presented the definition and types of plasma reactors and their respective characteristics. Then, these applications of plasma technology in many essential electrode reactions including carbon dioxide reduction reaction(CO_2RR), nitrogen fixation, oxygen reduction reaction(ORR), oxygen evolution reaction(OER) and hydrogen evolution reaction(HER) were ***, the challenges and outlook of plasma technology in energy storage and conversion were summarized, and the solutions and prospected its development in the future were present. Through reviewing the related aspects, readers can have a deeper understanding of the application prospects of plasma in electrocatalysis.

关键词： Plasma Electrocatalysts Electrode reactions Energy storage Energy conversion

In-situ elemental reaction-regulated Ag_(2)S films enable the best thermoelectric performances

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Aggregate 2024年第4期5卷 360-366页

作者： Chengcheng Xing Ruijuan Qi Yi Chang Xiaoming Ma Yan Lei shuangquan zang Zhi Zheng Key Laboratory for Micro-Nano Materials for Energy Storage and Conversion of Henan Province College of Chemical and Materials EngineeringInstitute of Surface Micro and Nano MaterialsXuchang UniversityHenanP.R.China Green Catalysis Center College of ChemistryZhengzhou UniversityZhengzhouP.R.China School of Physics and Electronic Science Key Laboratory of Polar Materials and DevicesMinistry of EducationDepartment of Electronic ScienceEast China Normal UniversityShanghaiP.R.China School of Chemistry and Chemical Engineering Key Laboratory of Green Chemical Media and ReactionMinistry of EducationCollaborative Innovation Center of Henan Province for Fine Chemicals Green ManufacturingHenan Normal UniversityXinxiangP.R.China

Silver sulﬁde thinﬁlm,with excellent thermoelectric properties,is few reported due to the complex and time-consuming high-temperature or high-pressure synthesis ***,a fast ionic conductor n-type Ag2Sﬁlm with good crystallinity and uniform density is prepared by sputtering metal Agﬁlms of different thicknesses on glass and then reacting in S precursor solution at low *** 450 K,β-Ag2Sﬁlms can be obtained and underwent a phase transition fromα-Ag2S monoclinic,which had a signiﬁcant effect on their electrical and thermal *** grain size of Ag2Sﬁlms increases with the increase ofﬁlm *** and after the phase transition,the carrier concentration and mobility cause obvious changes in the electrical properties of *** carrier concentration of body-centered cubic phaseβ-Ag2S is about three orders of magnitude higher than that of monoclinic phaseα-Ag2S,and the mobility is also 2–3 times that of the ***,after the phase transition,the conductivity ofβ-Ag2S rises exponentially from the zero conductivity ofα-Ag2S and increases with the increase of *** Ag2Sﬁlm shows the highestﬁgure of merit of 0.830.30 at 600 K from the sample with±∼1600 nm thickness,which is the highest record among Ag2S-based thermoelectric materials reported so far.

关键词： ﬁneﬁlm in-situ elemental reaction phase transition thermoelectric β-Ag2S

Droplet Manipulation and Crystallization Regulation in Inkjet-Printed Perovskite Film Formation

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CCS Chemistry 2022年第5期4卷 1465-1485页

作者： Yajie Cheng Hangjuan Wu Junjie Ma Pengwei Li Zhenkun Gu shuangquan zang Liyuan Han Yiqiang Zhang Yanlin Song School of Materials Science and Engineering Henan Institute of Advanced TechnologyZhengzhou UniversityZhengzhou 450001 College of Chemistry Zhengzhou UniversityZhengzhou 450001 State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240 Key Laboratory of Green Printing Institute of ChemistryChinese Academy of Sciences(ICCAS)Beijing Engineering Research Center of Nanomaterials for Green Printing TechnologyNational Laboratory for Molecular Sciences(BNLMS)Beijing 100190

Emerging organic–inorganic metal halide perovskite materials have become the focus of the optoelectronics research community owing to their excellent photoelectric ***,challenges still exist for transferring the lab-made devices to largearea industrial *** printing(IJP)technology provides a promising way to fill the gap because of its precise droplet control and uniform large-scale deposition ***,an in-depth understanding of inkjet-printed perovskite films in terms of droplet manipulation and crystallization regulation is critical for upscaling the perovskite devices to commercial *** this review,we give an overview of inkjet-printed high-quality perovskite films and provide guidelines on inkjet-printing large-scale highperformance perovskite ***,we analyze theories of droplet formation and perovskite nucleation/crystallization dynamics and then focus on summarizing the perovskite film-formation strategies via IJP,in the aspects of ink engineering,the printing process,and ***,we review the recent advances of inkjet-printed perovskite films on optoelectronic devices,such as perovskite solar cells,perovskite light-emitting diodes,and perovskite ***,we highlight the“Trilogy Strategies,”including ink engineering,printing process,and posttreatment for printing high-quality perovskite films.

关键词： inkjet printing perovskite droplet manipulation crystallization film formation optoelectronic devices

具有二维超分子结构的{[Ni(oxbe)]_2Mg(H_2O)_2}·2DMF·DMA的合成及晶体结构

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化学通报 2005年第3期68卷 233-236页

作者：陶偌偈李付安臧双全梅崇珍牛景扬河南大学化学化工学院开封475001

合成了一种中心对称的草酰胺桥联异三核配合物 {[Ni(oxbe) ]2 Mg(H2 O) 2 }·2DMF·DMA[oxbe为N (2 羧基苯 ) N′ (2 氨乙基 )不对称草酰胺 (H3 oxbe)的脱氢阴离子 ;DMF为N ,N 二甲基甲酰胺 ;DMA为二甲胺 ]。用单晶X射线衍射法测定... 详细信息

合成了一种中心对称的草酰胺桥联异三核配合物 {[Ni(oxbe) ]2 Mg(H2 O) 2 }·2DMF·DMA[oxbe为N (2 羧基苯 ) N′ (2 氨乙基 )不对称草酰胺 (H3 oxbe)的脱氢阴离子 ;DMF为N ,N 二甲基甲酰胺 ;DMA为二甲胺 ]。用单晶X射线衍射法测定了它的晶体结构 ,该晶体属单斜晶系 ,空间群C2 c ,晶胞参数a=2 2 61 7(5 ) ,b =1 7 1 73 (4 ) ,c=1 0 881 (4 ) ,β =1 1 5 40 (2 )°,V =3 81 8(2 ) 3 ,Ni2 MgC3 0 H44N8O13 ,Mr=866 46,Z =4,Dc=1 5 0 8g cm3 ,μ(MoKα) =1 0 75mm-1,F(0 0 0 ) =1 80 8,R =0 0 660 ,wR =0 1 772 (I >2б(I) ) ,3 75 5个可观察衍射点。该三核分子为中心对称结构 ,镁离子位于 6个氧原子所构成的变形八面体的中心 ,两个镍离子则分别位于两端由N3 O构成的近似平面四方场中 ,中心Mg2 + 与两端的Ni2 + 通过草酰胺阴离子桥联在一起。

关键词： Ni2 N-二甲基甲酰胺草酰胺桥联单晶X射线衍射异三核配合物晶体结构单斜晶系 DMF 合成二甲胺

紫精修饰多功能Eu(Ⅲ)配合物的荧光开关、非线性光学和光电活性（英文）

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应用化学 2017年第9期34卷 1024-1034页

作者：杜香莎李海洋刘恒李根恒李林科臧双全郑州大学化学与分子工程学院郑州450001

利用紫精功能化的配体1-(3,5-二羧基苄基)-4,4'-联吡啶硝酸盐(H_2L^+NO_3^-)与Eu(Ⅲ)离子在溶剂热条件下得到一个金属有机配合物{[Eu(μ_2-OH)(L)(HCO_2)]·H_2O}_n(1),其中甲酸阴离子来自于溶剂DMF(N,N'-二甲基甲酰胺)分子的原位分解... 详细信息

利用紫精功能化的配体1-(3,5-二羧基苄基)-4,4'-联吡啶硝酸盐(H_2L^+NO_3^-)与Eu(Ⅲ)离子在溶剂热条件下得到一个金属有机配合物{[Eu(μ_2-OH)(L)(HCO_2)]·H_2O}_n(1),其中甲酸阴离子来自于溶剂DMF(N,N'-二甲基甲酰胺)分子的原位分解。单晶X射线衍射表明配合物1是一个手性的二维层状结构。配合物1呈现出可逆的、快速响应的光致变色特性。在光热作用下,它表现为肉眼可见的从浅黄到深绿色的可逆颜色改变,这种着色/脱色过程可以循环多次,具有很好的可逆性。结构分析表明,供体羧酸基团和受体紫精单元之间以及配合物中π···π相互作用为电子转移提供了有效的路径,从而导致光致变色行为的发生。该手性配合物不仅呈现出光调节荧光特性,还具有二阶非线性光学(SHG)开关性质。在相同粒径的测试条件下,配合物1的SHG信号强度大约是磷酸二氢钾(KDP)的3.8倍。此外,配合物1的表面光电压测定显示它呈现出光电活性。

关键词：紫精 Eu(Ⅲ)配合物荧光开关非线性光学特性光电活性

以“聚集诱导发光(AIE)”理论为载体开展化学类课程思政建设的研究与实践

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大学化学 2021年第3期36卷 253-257页

作者：李恺何占航李中军臧双全郑州大学化学学院郑州450001

聚集诱导发光(AIE)作为一种由中国科学家首先提出并被世界所公认的前沿科学理论,为化学学科思政教育提供了一个极佳的载体。通过对AIE理论和其发现者——唐本忠院士科学研究事迹的学习,可以使学生在了解科学前沿进展的同时,增强民族自... 详细信息

聚集诱导发光(AIE)作为一种由中国科学家首先提出并被世界所公认的前沿科学理论,为化学学科思政教育提供了一个极佳的载体。通过对AIE理论和其发现者——唐本忠院士科学研究事迹的学习,可以使学生在了解科学前沿进展的同时,增强民族自豪感、激发学习热情,为学生树立科研报国、永攀高峰的光辉典范。本文介绍了郑州大学化学学院以"聚集诱导发光(AIE)"理论为载体开展化学类课程思政建设的研究实践和相关思考。

关键词：课程思政聚集诱导发光教学案例

水杨醛席夫碱的合成与聚集诱导发光(AIE)性能研究综合实验的课程思政设计

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大学化学 2024年第2期39卷 105-109页

作者：李艳阳张宗培李恺臧双全郑州大学化学学院郑州450001

水杨醛席夫碱的合成与聚集诱导发光(AIE)性能研究是郑州大学化学学院针对化学专业本科学生设计并开设的一个综合实验项目,已经开设了5个学年,经过不断的改进和完善,形成了具有代表性的实验教学课程思政案例。案例以AIE这一由中国人原创... 详细信息

水杨醛席夫碱的合成与聚集诱导发光(AIE)性能研究是郑州大学化学学院针对化学专业本科学生设计并开设的一个综合实验项目,已经开设了5个学年,经过不断的改进和完善,形成了具有代表性的实验教学课程思政案例。案例以AIE这一由中国人原创的前沿科学理论为载体,通过AIE现象发现过程的学习、在不同条件下分组亲身实践AIE的合成操作、观察AIE的发光性能等过程,将AIE现象与国家科技发展、社会需求相联系,把“民族自豪感”“科研创新精神”“社会担当精神”“辩证唯物主义思维”等课程思政元素融入到实验教学中,让学生在提高“发现问题、分析问题、解决问题”综合能力的同时,充分了解荧光材料在国民经济和社会发展中的重要作用,提升学生的民族自尊心和自信心,坚定“见人所未见,思人所未思”的科研理念,激发服务国家发展的热情。

关键词：课程思政聚集诱导发光综合实验

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