通过简单溶液生长法制备纳米结构氢氧化镍和氧化镍薄膜及其表征

Preparation and characterization of nanostructured Ni(OH)2 and NiO thin films by a simple solution growth process.

作者信息

Li Q Y, Wang R N, Nie Z R, Wang Z H, Wei Q

机构信息

College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China.

出版信息

J Colloid Interface Sci. 2008 Apr 1;320(1):254-8. doi: 10.1016/j.jcis.2007.11.006. Epub 2007 Nov 13.

DOI:10.1016/j.jcis.2007.11.006

PMID:18243231

Abstract

Nanostructured Ni(OH)2 thin films were prepared by a simple solution growth process with F(-) and NH3 used as Ni2+ coordination agents, and ammonia hydroxide solution used as OH(-) supplier to accelerate the hydrolyzation of nickel complex species. The results showed Ni(OH)2 thin films were constructed mainly with hexagonal beta-Ni(OH)2 nanorods; the F(-) and NH3 in reactive solutions played important roles in the film growth process; and solution pH had great influence on the morphologies of thin films, which was explained by the competition of Ni(OH)2 nucleation and growth in solutions. NiO crystallinity thin films were obtained by annealing Ni(OH)2 thin films at 400 degrees C for 2 h and the morphologies of the Ni(OH)2 thin films were sustained well during the annealed process.

摘要

通过简单的溶液生长过程制备了纳米结构的氢氧化镍（Ni(OH)₂）薄膜，其中使用氟离子（F⁻）和氨（NH₃）作为镍离子（Ni²⁺）的配位剂，并用氢氧化铵溶液作为氢氧根离子（OH⁻）的供应源来加速镍络合物的水解。结果表明，Ni(OH)₂薄膜主要由六方β-Ni(OH)₂纳米棒构成；反应溶液中的F⁻和NH₃在薄膜生长过程中起重要作用；溶液pH值对薄膜形貌有很大影响，这可通过溶液中Ni(OH)₂成核与生长的竞争来解释。通过在400℃下将Ni(OH)₂薄膜退火2小时获得了氧化镍（NiO）结晶薄膜，并且在退火过程中Ni(OH)₂薄膜的形貌得到了很好的保持。