检索结果-南通市图书馆

A Multiple-Twin-Crystal Nature of the Branching Cu2. Particles by Electrodeposition

在线全文

cnki会议

学校读者我要写书评

暂无评论

A Multiple-Twin-Crystal Nature of the Branching Cu2O Particl...

中国化学会第五届全国结构化学学术会议

作者： Zhi-Yuan Jiang Yan-Yun Ma Qin Kuang Shu-Hong Zhang Zhao-Xiong Xie Rong-Bing Huang Lan-Sun Zheng state key {1. for physical chemistry of solid surfaces,department of chemistry,College of chemistry and Chemical Engineering,xiamen {1.},xiamen {1.},china.

Recently years,considerable attentions have been focused on the various polyhedron-based branching particles due to their fundamental significance and their widespread potential ***,the knowledge of the original nature and the growth mechanisms for these complicated structures are still *** this paper,polyhedron-based branching CuO micro-crystals have been prepared via electrodeposition process without any surfactant at the room *** electron diffraction pattern of the branching CuO micro-crystals can be indexed as a single crystal as many other polydedron-based branching crystals *** carefully analyzing the intensities of the diffraction spots,we conclude that the crystal twinning (stacking fault)is responsible for the well-shaped CuO micro-crystals,which indicate that these branching particles in fact multiple twinned crystals,other than perfect single *** could be anticipated that the crystal twinning(or the stacking fault)could be the common phenomena in the single-crystal-like branching particles.

关键词：

A Multiple-Twin-Crystal Nature of the Single-Crystal-Like Branching Cu2. particles

在线全文

cnki会议

学校读者我要写书评

暂无评论

A Multiple-Twin-Crystal Nature of the Single-Crystal-Like Br...

中国化学会第五届全国结构化学学术会议

＜正＞In recent years,considerable attentions have been focused on the various polyhedral branch based dendrite structures and patterns due to their fundamental significance and their widespread potential ***,there are a number of unresolved issues on the mechanisms suggested to interpret the ramified growth of these complicated structures,especially,the

关键词：

内表面栅极等离子体源离子注入TiN薄膜及其特性研究

在线全文

cnki会议

学校读者我要写书评

暂无评论

物理学报 2003年第9期52卷 2213-2218页

作者：张谷令王久丽杨武保范松华刘赤子杨思泽中国科学院物理研究所北京100080

阐述了栅极增强等离子体源离子注入 (GEPSII)方法的基本思想 .利用GEPSII方法在 4 5号钢基底上生成了金黄色氮化钛 (TiNx)膜 .对不同条件下的TiN膜做电化学腐蚀 ,XPS ,AES ,XRD等分析 .电化学腐蚀实验显示TiN薄膜改善了 4 5号钢的耐腐... 详细信息

阐述了栅极增强等离子体源离子注入 (GEPSII)方法的基本思想 .利用GEPSII方法在 4 5号钢基底上生成了金黄色氮化钛 (TiNx)膜 .对不同条件下的TiN膜做电化学腐蚀 ,XPS ,AES ,XRD等分析 .电化学腐蚀实验显示TiN薄膜改善了 4 5号钢的耐腐蚀性能 5— 1.倍 ,且在高气压下效果更好 .结构分析显示TiN膜含有TiO2.,TiN成分 ,主要沿( 1.1.和 ( 2.0 0 )晶向生长 ,深度分析显示膜的厚度只有二十几纳米。

关键词：腐蚀栅极增强等离子体源离子注入 TiN薄膜氮化钛薄膜 GEPSⅡ 45号钢内表面处理

Synthesis and Magnetic Properties of Polynuclear heterometailic metal clusters

在线全文

学校读者我要写书评

暂无评论

Synthesis and Magnetic Properties of Polynuclear heterometai...

中国化学会第五届全国结构化学学术会议

作者： Xiang-Jian Kong Yan-Ping Ren La-Sheng Long~* Rong-Bin Huang Lan-Sun Zheng state key {1. of physical chemistry of solid Surface and department of chemistry,College of chemistry and Chemical Engineering,xiamen university,xiamen {1.},china.

＜正＞Polynuclear heterometallic metal clusters,such as,3d-4f and 3d-5f ones,are of currently interest, due to their often exhibiting unique magnetic property and good models for the investigation on the nature of the...

关键词：

SYNTHESIS AND ASYMMETRIC CATALYSIS OF NEW CHIRAL TETRADENTATE AMINOPHOSPHINE LIGANDS

在线全文

cnki会议

学校读者我要写书评

暂无评论

SYNTHESIS AND ASYMMETRIC CATALYSIS OF NEW CHIRAL TETRADENTAT...

第1.届国际磷化学大会

作者： Yan-Yun Li Zhen-Rong Dong Wei-Yi Shen Gui Chen Xue-Qing Zhang Hui Zhang Jingxing Gao state key{2. of physical chemistry of solid surfaces department of chemistry xiamen university Fujian P.R.china

＜正＞For the past decades, chiral phosphine compounds are becoming the most important and popular ligands in asymmetric catalysis. Recently, chiral mixed P, N-ligands have attracted considerable

关键词：

在线全文

cnki会议

学校读者我要写书评

暂无评论

合成醋酸研究的新进展

天然气化工—C1.学与化工 1995年第6期20卷 39-42页

作者：高景星黄秀菁厦门大学化学系

介绍了由以下几种方法合成醋酸研究的新进展：（１）甲烷的直接碳基化；（２）从合成气一步制醋酸；（３）甲醇的气相羰基化；（４）只用甲醇为原料制醋酸和醋酸甲酯。

关键词：醋酸甲醇合成气甲烷羰基化

在线全文

学校读者我要写书评

暂无评论

重要化工原料——异丁醛的制备方法

天然气化工—C1.学与化工 1997年第1期22卷 41-45页

作者：陈笃慧袁友珠蔡启瑞厦门大学化学系

论述了异丁醛的制备方法，其中负载型水溶性膦铑催化剂（ＳＡＰ）促进下的丙烯氢甲酰化反应是异丁醛的主要制备方法。通过反应条件的调节，配位基团及载体的选取，可有效地控制主副产物的比例；由甲醇与乙醇或甲醇与正丙醇在负载型Ｖ２... 详细信息

论述了异丁醛的制备方法，其中负载型水溶性膦铑催化剂（ＳＡＰ）促进下的丙烯氢甲酰化反应是异丁醛的主要制备方法。通过反应条件的调节，配位基团及载体的选取，可有效地控制主副产物的比例；由甲醇与乙醇或甲醇与正丙醇在负载型Ｖ２Ｏ５催化剂促进下的反应是制取ＩＢＡ的又一途径。

关键词：丙烯氢甲酰化异丁醛甲醇 SAP 铑催化剂

Fabrication and Characterization of ZnO/SnO2.Epitaxial Heterostructures and Corresponding SnO2.Hollow Nanostructures

在线全文

学校读者我要写书评

暂无评论

Fabrication and Characterization of ZnO/SnO2 Epitaxial Heter...

2.05年纳米和表面科学与技术全国会议

作者： Qin Kuang Zhao-Xiong Xie~* Zhi-Yuan Jiang Xi Zhou Tao Xu Shui-Chao Lin Su-Yuan Xie Rong-Bin Huang Lan-Sun Zheng state key {1. for physical chemistry of solid surfaces & department of chemistry,xiamen university,xiamen {1.},china.

Epitaxial growth,as a best strategy to attain a heterostructure with a well-defined andclean interface,usually takes place on a planar *** this paper,based a chemicalvapor deposition technique using SnH gas as the precursor,we demonstrate thepossibility of establishing three-dimensionally epitaxial interface between ZnO andSnO,two materials with different crystal systems for the first *** to now,we haveachieved success in the synthesis of various ZnO/SnO core-shell epitaxialheterostructures including tetrapods(case 1.,nanorods arrays(case 2.and hexagonal

关键词：

Rapid Fabrication of CdS Nanocrystals with Well Mesoporous Structure Under Ultrasound Irradiation at Room Temperature

在线全文

cnki会议

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2012年第1期28卷 124-128页

作者： YU Chang-lin1, ZHOU Wan-qin2.3, YU Jim-my4, YANG Jian-gao5 and FAN Qi-zhe1 1. School of Metallurgy and Chemical Engineering, 2. School of Information Engineering, Jiangxi university of Science and Technology, Ganzhou 341000, P. R. china 3. Fujian Provincial {2. laboratory of Photocatalysis-state {2. laboratory Breeding Base, Fuzhou university, Fuzhou 350002. P. R. china 4. department of chemistry, Center of Novel Functional Molecules, and Environmental Science Programme, Chinese university of Hong Kong, Shatin, New Territories, Hong Kong, P. R. china 5. Engineering Research Center of High-efficiency Development and Application Technology of Tungsten Resources, Ministry of Education, Jiangxi university of Science and Technology, Ganzhou 341000, P. R. china Jiangxi Univ Sci & Technol Sch Met & Chem Engn Ganzhou 341000 Peoples R China Jiangxi Univ Sci & Technol Sch Informat Engn Ganzhou 341000 Peoples R China Fuzhou Univ Fujian Prov Key Lab Photocatalysis State Key Lab Breeding Base Fuzhou 350002 Peoples R China Chinese Univ Hong Kong Dept Chem Ctr Novel Funct Mol Shatin Hong Kong Peoples R China Chinese Univ Hong Kong Environm Sci Programme Shatin Hong Kong Peoples R China Jiangxi Univ Sci & Technol Minist Educ Engn Res Ctr High Efficiency Dev & Applicat Techn Ganzhou 341000 Peoples R China

Sphere-like mesoporous CdS nanocrystals with high crystallinity and big surface area were successfully fabricated by ultrasound irradiation at room temperature. The as-synthesized CdS with and without ultrasound irra diation was investigated by the characterizations of X-ray diffraction（XRD）, scanning electron microscopy（SEM）, transmission electron microscopy（TEM）, and Brunauer-Emmett-Teller（BET） surface areas. The photocatalytic acti vity of the CdS was evaluated by photocatalytic degradation of methyl orange under visible light（λ〉42. nm） irradia tion. A possible mechanism for the formation of the CdS nanocrystals with mesoporous structure under ultrasound irradiation was proposed. The results show that both the template role of the triblock copolymer of P1.0} and the effect of ultrasound-induced aggregation are mainly responsible for the formation of mesoporous structure. On the other hand, the energy generated from acoustic cavitation can effectively accelerate the crystallization process of the amorphous CdS.

关键词： CdS Crystallinity Mesoporous structure Ultrasound-induced aggregation