文献类型：期刊文献

英文题名：Controlled Fabrication of Flower-like Nickel Oxide Hierarchical Structures and Their Application in Water Treatment

作者：Tao, Feifei[1];Shen, Yongmiao[1];Wang, Linxia[1]

机构：[1]Shaoxing Univ, Dept Chem & Chem Engn, Shaoxing 312000, Peoples R China

年份：2012

卷号：17

期号：1

起止页码：703

外文期刊名：MOLECULES

收录：SCI-EXPANDED(收录号：WOS:000299535700047)、、Scopus(收录号：2-s2.0-84862946004)、WOS

基金：The authors acknowledge financial support from the National Science Foundation for Young Scientists of China (Grant No. 20901051).

语种：英文

外文关键词：nickel oxide; hierarchical structures; fabrication

外文摘要：Flower-like NiO hierarchical structures with 2-5 mu m diameter assembled from nanosheet building blocks have been successfully fabricated via a wet-chemical method combined with thermodecomposition technology. The template-free method is facile and effective in preparing flower-like NiO superstructures in high yield. The intermediate product and final hierarchical structures are characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform IR (FTIR), and thermogravimetric analysis (TGA). The effects of growth temperature and reaction time on the morphologies of the as-prepared structures were investigated by SEM characterization and a possible mechanism for the formation of flower-like NiO is proposed. Based on the nitrogen adsorption and desorption measurements, the BET surface area of the as-obtained sample is 55.7 m(2)/g and the pore-size distribution plot indicates a bimodal mesopore distribution, with pore sizes of ca. 2.6 nm and 7.4 nm, respectively. In comparison with sphere-like and rod-like structures, the flower-like NiO hierarchical structures show an excellent ability to rapidly remove various pollutants when used as adsorbent and photocatalyst in waste-water treatment, which may be attributed to its unique hierarchical and porous surface structures.