Versatile fabrication of aligned SnO2 nanotube arrays by using various ZnO arrays as sacrificial templates

通讯作者地址: Xie, ZX (通讯作者), Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 电子邮件地址: [email protected] this paper, we describe an effective two-step method for fabricating aligned SnO2 nanotube arrays by using various pre-synthesized ZnO nanorod arrays as sacrificial templates. The composition and structure of as-synthesized SnO2 nanotube arrays were analyzed in detail by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Because there is a special epitaxial relation between the SnO2 walls and ZnO templates, the walls building the SnO2 nanotubes are highly orientated and nearly single-crystalline. Our present study provides an opportunity to investigate related physical and chemical properties and potential applications of such aligned SnO2 nanotubes with nearly single-crystalline nature.National Natural Science Foundation of China 20725310,20721001 ,20673085,20801045 National Basic Research Program of China 2007CB815303 2009CB939804 Key Scientific Project of Fujian Province of China 2005HZ01-

Growth of Prussian blue microcubes under a hydrothermal condition: Possible nonclassical crystallization by a mesoscale self-assembly

通讯作者地址: Xie, ZX (通讯作者), Xiamen Univ, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 电子邮件地址: [email protected] classical crystallization process starts from stable nuclei followed by a simple enlargement of the nuclei by unit-cell replication. In recent years, the universality of such classical crystallization has been questioned upon investigations of biomineralization processes, and there are few examples showing that crystal growth may not follow such a classical crystallization process. In this paper, a typical coordination polymer, Prussian blue microcrystals, has been synthesized under hydrothermal conditions. By carefully analyzing the intermediates during the crystal growth process, we found that the growth of Prussian blue under the given growth conditions may follow a nonclassical crystal growth process in which a mesoscale self-assembly of nanocrystallites is included during crystal growth. Such a mesoscale self-assembly process could be a common phenomenon for growth of some crystals with extremely low solubility

核壳型氧化锌/氧化锡复合纳米材料及其制备方法

【申请号】CN200510129969.X【申请日】2005-12-16 【公开号】CN1803707 【公开日】 2006-07-19 【申请人】厦门大学【地址】361005福建省厦门市思明南路422号 【发明人】匡勤;周樨;徐韬;林水潮;江智渊;谢兆雄;谢素原;黄荣彬;郑兰荪 【专利代理机构】厦门南强之路专利事务所【代理人】 马应森;戴深峻 【国省代码】35核壳型氧化锌/氧化锡复合纳米材料及其制备方法,涉及一种纳米材料的制备,尤其是涉及一种核壳型氧化锌/氧化锡复合纳米材料及其制备方法。提供一种具有良好的、清洁的、无缺陷界面的核壳型氧化锌/氧化锡复合纳米材料及其制备方法,核壳型氧化锌/氧化锡复合纳米材料包括一个ZnO内核和一层包裹着ZnO的SnO2外壳。先制备ZnO纳米材料,再制备SnH4前驱体,产生的气体SnH4由N2携带进入气囊,生长SnO2外壳,在硅片衬底上生长得到具有核-壳结构的ZnO/SnO2复合材料。氧化锌内核和氧化锡外壳之间形成的界面是清洁的缺陷少的外延界面,可控制性好,形态丰富,具有与其单一材料氧化锌或氧化锡不同的荧光发射谱

氧化锡空心纳米材料的制备方法

【申请号】CN200510129960.9【申请日】 2005-12-16 【公开号】 CN1789140 【公开日】 2006-06-21 【申请人】 厦门大学 【地址】 361005福建省厦门市思明南路422号 【发明人】 匡勤;周樨;徐韬;林水潮;江智渊;谢兆雄;谢素原;黄荣彬;郑兰荪 【专利代理机构】厦门南强之路专利事务所【代理人】 马应森;戴深峻 【国省代码】 35氧化锡空心纳米材料的制备方法,涉及一种纳米材料的制备,尤其是涉及一种以氧化锌为牺牲模板制备氧化锡空心纳米材料的方法。提供一种制备各种形态的SnO2空心纳米材料的通用方法。步骤为制备ZnO纳米材料,制备SnH4前驱体,产生的气体SnH4通过N2携带进入一个气囊中备用,生长SnO2外壳,即在硅片衬底上生长得到具有核-壳结构的ZnO/SnO2复合材料,最后除去ZnO内核,即得到保持ZnO初始外形的SnO2空心纳米材料。优点是ZnO纳米材料具有极其丰富的形态,SnO2空心材料外壁的结晶度良好,SnO2空心材料外壁的厚度可控

Review on Achievement to Fusarium Wilt Disease in Agricultural Crops

对中国农作物枯萎病的研究进行综述.主要包括枯萎病的发生与危害、寄主范围、致病力分化、病原菌鉴定、生理小种、生理研究、生化防治等.The present paper dealt with the review of achievement to Fusarium wilt disease in agricultural crops in China. The discussion topics included the damage of Fusarium wilt disease to crops,host ranges,identification of the disease,differentiation of pathogenicities,separation of races and forms,physiological research,chemical and biological control etc.138 references were cited in the paper.国家863计划项目(2002AA244031 2);; 福建省计委项目(闽计农经[2002]48号)资

掩埋隧道结VCSEL芯片小信号等效电路模型

提出了适用于一种1.55μm掩埋隧道结垂直腔面发射激光器(VCSEL)芯片的小信号等效电路模型.等效电路的提出是基于半导体激光器速率方程以及VCSEL芯片结构,电路中各元件都有严格的物理意义.根据实验测得芯片的反射系数及传输参数,通过小信号等效电路仿真模拟,得到电路各元件参数值.不同偏置电流下,模拟结果与实验结果吻合都非常好,证明了该等效电路的有效性