具有分级结构的氢氧化镍和氧化镍空心球及薄膜的制备

Fabrication of hollow spheres and thin films of nickel hydroxide and nickel oxide with hierarchical structures.

作者信息

Wang Debao, Song Caixia, Hu Zhengshui, Fu Xun

机构信息

College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, PRC.

出版信息

J Phys Chem B. 2005 Jan 27;109(3):1125-9. doi: 10.1021/jp046797o.

DOI:10.1021/jp046797o

PMID:16851070

Abstract

Hollow spheres and thin films of Ni(OH)(2) and NiO with unusual form and hierarchical structures have been synthesized by a simple solution chemistry method. First, in situ formed Ni(OH)(2) nanoflakelets organized on the surface of styrene-acrylic acid copolymer (PSA) latex particles to form core/shell structures. Ni(OH)(2) hollow shells built up with nanoflakelets were obtained after subsequent removal of the core latex particles by dissolving PSA latex in toluene; the removal of the cores by calcinations would result in NiO hollow shells, also with hierarchical structures. BET calculation showed the surface area of the NiO hollow spheres was 156 m(2)/g. The nanoflakelets could also organize themselves into thin films with hierarchical structures. It is anticipated that these novel structures will have some unique applications in Ni-based batteries and other potentials.

摘要

通过一种简单的溶液化学方法合成了具有独特形状和分级结构的氢氧化镍（Ni(OH)(2)）和氧化镍（NiO）空心球及薄膜。首先，原位形成的氢氧化镍纳米薄片在苯乙烯 - 丙烯酸共聚物（PSA）乳胶颗粒表面组装，形成核/壳结构。通过将PSA乳胶溶解在甲苯中随后去除核心乳胶颗粒后，得到了由纳米薄片构建的氢氧化镍空心壳；通过煅烧去除核心会得到同样具有分级结构的氧化镍空心壳。BET计算表明氧化镍空心球的表面积为156 m(2)/g。纳米薄片还可以自行组装成分级结构的薄膜。预计这些新颖的结构将在镍基电池及其他方面有一些独特的应用。