空心钨酸钠青铜（Na0.15WO3）纳米球：制备、表征及其吸附性能。

Hollow Sodium Tungsten Bronze (Na0.15WO3) Nanospheres: Preparation, Characterization, and Their Adsorption Properties.

机构信息

National Key Laboratory of Nano/Micro Fabrication Technology, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, 200240, Shanghai, People's Republic of China.

出版信息

Nanoscale Res Lett. 2009 Jul 17;4(10):1241-6. doi: 10.1007/s11671-009-9383-x.

DOI:10.1007/s11671-009-9383-x

PMID:20596394

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2894149/

Abstract

We report herein a facile method for the preparation of sodium tungsten bronzes hollow nanospheres using hydrogen gas bubbles as reactant for chemical reduction of tungstate to tungsten and as template for the formation of hollow nanospheres at the same time. The chemical composition and the crystalline state of the as-prepared hollow Na0.15WO3nanospheres were characterized complementarily, and the hollow structure formation mechanism was proposed. The hollow Na0.15WO3nanospheres showed large Brunauer-Emment-Teller specific area (33.8 m2 g-1), strong resistance to acids, and excellent ability to remove organic molecules such as dye and proteins from aqueous solutions. These illustrate that the hollow nanospheres of Na0.15WO3should be a useful adsorbent.

摘要

我们在此报告了一种简便的方法，使用氢气气泡作为反应物，通过化学还原将钨酸盐还原为钨，并同时作为模板来制备钨青铜中空纳米球。通过互补的方式对所制备的中空 Na0.15WO3纳米球的化学组成和晶体状态进行了表征，并提出了中空结构的形成机制。中空 Na0.15WO3纳米球具有大的 Brunauer-Emment-Teller 比表面积（33.8 m2 g-1）、强耐酸性以及从水溶液中去除有机分子如染料和蛋白质的优异能力。这些表明 Na0.15WO3 的中空纳米球应该是一种有用的吸附剂。