检索结果-南通市图书馆

oleylamine-catalyzed Tandem Knoevenagel/Michael Addition of 1,3-Cyclohexanediones with Aromatic Aldehydes

Chemical Research in Chinese Universities 2018年第2期34卷 186-190页

作者： HE Xinwei WU Yuhao FAN Chenli LU Peng ZUO Youpeng SHANG Yongjia Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratory of Molecule-based Materials(State Key Laboratory Cultivation Base) College of Chemistry and Materials Science Anhui Normal University Wuhu 241000 R R. China Department of Material Engineering Wuhu Institute of Technology Wuhu 241003 P. R. China

A convenient and efficient method was developed for the synthesis of 2,2＇-（arylmethylene）bis（3-hydrox- ycyclohex-2-enone） derivatives via the oleylamine-catalyzed tandem Knoevenagel/Michael addition reactions of aromatic aldehydes and cyclohexane-1,3-diones. This transformation proceeded without any metal catalyst in non-toxic solvent at room temperature with high isolated yields. A plausible mechanism for this process was pro- posed.

关键词： 2,2'-(Arylmethylene)bis(3-hydroxycyclohex-2-enone) Knoevenagel condensation Michael addition oleylamine Tandem reaction

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Modulating the alloying mode in the doping-induced synthesis of Au-Pd nanowires

引用

Nano Research 2024年第4期17卷 3334-3343页

作者： Hui Jin Xiaoliang Wei Lecheng Zhao Jialong Yu Qiao Pan Shumin Li Qian Wang Zhaotong Yuan Dan Yang Donghui Zhao Hongyu Chen Yawen Wang Institute of Advanced Synthesis School of Chemistry and Molecular EngineeringJiangsu National Synergistic Innovation Center for Advanced MaterialsNanjing Tech UniversityNanjing 211816China School of Science Westlake UniversityHangzhou 310064China Institute of Natural Sciences Westlake Institute for Advanced StudyHangzhou 310064China

Heterogeneous doping is one effective strategy for synthesizing metal alloy ***,the heterogeneous doping processes of Pd on the ultrathin Au nanowires were systematically modulated and ***-Pd alloy nanowires with various morphologies and lattice structures can be obtained by adjusting the morphology of the precursor Au nanowires and the kinetics of the heterogeneous doping *** effects of the rate of Pd reduction and the concentration of the ligand oleylamine(OAm)on the Pd deposition and alloying mode were ***,as the Pd deposition rate decreases,the Pd deposition and alloying mode switches from the island-forming Stransky–Krastanov(SK)mode to the epitaxial Frank-van der Merwe(FM)mode,and eventually to an unconventional twisting alloying mode,where the interdiffusion of Pd and Au causes drastic rearrangement of the lattice structure and formation of helical *** kinetics-related variation of alloying mode could also be observed in the Au-Ag nanowires,demonstrating a general design principle for the synthesis of alloy *** addition,the electrocatalytic performance of various Au-Pd nanowires was evaluated,and the alloy nanowire formed via the SK mode was found to be an excellent electrocatalyst for oxygen reduction and ethanol oxidation.

关键词： gold nanowires Au-Pd alloy oleylamine post-synthetic modification

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High-yield production of carbon nanotubes from waste polyethylene and fabrication of graphene-carbon nanotube aerogels with excellent adsorption capacity

引用

Journal of Materials Science & Technology 2021年第35期94卷 90-98页

作者： Zhong Huang Yangfan Zheng Haijun Zhang Faliang Li Yuan Zeng Quanli Jia Jun Zhang Junyi Li Shaowei Zhang The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081China Henan Key Laboratory of High Temperature Functional Ceramics Zhengzhou UniversityZhengzhou 450052China College of Engineering Mathematics and Physical SciencesUniversity of ExeterExeter EX44QFUnited Kingdom

Waste plastics recycling and oil/organics remediation are environmental issues of global *** this work,a protectant was introduced,for the first time,to make highly efficient catalysts for pyrolysis of waste plastics into carbon nanotubes(CNTs)with high *** using waste polyethylene,Co(NO_(3))_(2) and oleylamine respectively as carbon source,catalyst precursor and protectant,a yield as high as 59.0%was *** CNTs exhibited a high adsorption capacity for methylene blue(up to 107.1 mg/g).Furthermore,by combining the CNTs with graphene oxide,a graphene-CNT aerogel with a low density of8.2 mg/cm^(3)and high porosity of 96.0%was successfully *** showed excellent hydrophobicity and mechanical stability,as well as high adsorption capacity of 289-410 g/g oil/organic solvent,which was much higher than most of these achieved by carbon-based three-dimensional materials reported previously,making the as-prepared aerogel a very promising adsorbent for oil/water separation.

关键词： Waste plastics Carbon nanotubes Pyrolysis oleylamine Aerogel Oil/organics remediation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Formation of hierarchical Fe7Se8 nanorod bundles with enhanced sodium storage properties

引用

Journal of Energy Chemistry 2020年第5期29卷 97-105页

作者： Wenzhi Tian Wenzhe Ma Zhenyu Feng Fang Tian Haibo Li Jing Liu Key Laboratory of Colloid and interface Chemistry Ministry of EducationSchool of Chemistry and Chemical Engineeringand State Key Laboratory of Crystal MaterialsShandong UniversityJinan 250100ShandongChina Department of Science and Technology of Shandong Province Jinan 250100ShandongChina School of Chemistry and Chemical Engineering Liaocheng UniversityLiaocheng 252059ShandongChina College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina

Ordered hierarchical architectures are attractive candidates for electrochemical energy storage ***,a facile self-template strategy is applied to prepare Fe7Se8 architectures with a monolithic structure via a self-synthesized single precursor and subsequent calcination at high *** the support of oleylamine,the precursor is structurally targeted to engineer the Fe7Se8 microstructure,featuring nanorod bundles arranged along the longitudinal *** of their ordered hierarchical structure,the Fe7Se8 nanorod bundles deliver a high reversible capacity of 300 m Ah g^-1 at 0.5 A g^-1,along with exceptional rate capability up to 20 A g^-1 and long-term cycle life over 8000 cycles,which represents the highest stability of Fe7Se8 anodes for sodium-ion batteries reported to *** feasibility of the present strategy to prepare metal selenide structures highlights its promising potential for the rational and effective engineering of electrode materials responsible for the electrochemical performance of energy storage systems.

关键词： Fe7Se8 Hierarchical structure Nanorod bundles Sodium-ion batteries oleylamine

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Wet-Chemical Synthesis and Optical Property of ZnSe Nanowires by Ag<sub>2</sub>Se-Catalyzed Growth Mechanism

引用

Advances in Materials Physics and Chemistry 2013年第6期3卷 289-294页

作者： Junli Wang Hui Feng Weiling Fan Kangmin Chen Qing Yang Hefei National Laboratory of Physical Sciences at the Microscale & Department of Chemistry University of Science and Technology of China (USTC) Hefei Chi School of Materials Science & Engineering Jiangsu University Zhenjiang China Scientific Research Academy and School of Chemistry & Chemical Engineering Jiangsu University Zhenjiang China Scientific Research Academy and School of Chemistry & Chemical Engineering Jiangsu University Zhenjiang China Hefei National Laboratory of Physical Sciences at the Microscale & Department of Chemistry University of Science and Technology of China (USTC) Hefei China

High-quality II-VI semiconductor ZnSe nanowires were facilely prepared in the oleic acid and oleylamine mixed solution at low temperatures of 130°C-200°C through an Ag2Se-catalyzed growth mechanism. oleylamine served as an effective reducing agent and a surfactant in the synthesis. Many of the resultant nanowires were terminated by an Ag2Se catalyst particle at one of their ends, confirming that the nanowire growth followed a catalytic mechanism. The crystal structure of Ag2Se catalyst was examined, which exhibited a metastable tetragonal phase, not the common orthorhombic phase. Meanwhile, the optical properties of as-synthesized ZnSe nanowire solid powder were evaluated by the UV-Visible diffuse reflectance and photoluminescence spectroscopy and a significant blue shift was observed compared to the bulk ZnSe with a band gap of 2.7 eV. This work would provide an alternative and effective catalytic route for the preparation of one-dimensional (1D) nanostructures of ZnSe and other metal selenides.

关键词： ZnSe Nanowires Catalytic Growth Ag2Se Catalyst oleylamine

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：