无表面活性剂硒化铜纳米线的水性制剂。

Aqueous preparation of surfactant-free copper selenide nanowires.

作者信息

Chen Xinqi, Li Zhen, Yang Jianping, Sun Qiao, Dou Shixue

机构信息

Institute for Superconducting and Electronic Materials, Squires Way, Innovation Campus of University of Wollongong, Wollongong, NSW 2500, Australia; Institute of Nanoscience and Nanotechnology, Department of Physics, Central China Normal University, Wuhan 430079, China.

Institute for Superconducting and Electronic Materials, Squires Way, Innovation Campus of University of Wollongong, Wollongong, NSW 2500, Australia; School of Radiation Medicine and Radiation Protection, Soochow University, 199 Ren Ai Road, Suzhou Industrial Park, Suzhou 215123, China.

出版信息

J Colloid Interface Sci. 2015 Mar 15;442:140-6. doi: 10.1016/j.jcis.2014.11.052. Epub 2014 Nov 25.

DOI:10.1016/j.jcis.2014.11.052

PMID:25527088

Abstract

Uniform surfactant-free copper selenide (Cu2-xSe) nanowires were prepared via an aqueous route. The effects of reaction parameters such as Cu/Se precursor ratio, Se/NaOH ratio, and reaction time on the formation of nanowires were comprehensively investigated. The results show that Cu2-xSe nanowires were formed through the assembling of CuSe nanoplates, accompanied by their self-redox reactions. The resultant Cu2-xSe nanowires were explored as a potential thermoelectric candidate in comparison with commercial copper selenide powder. Both synthetic and commercial samples have a similar performance and their figures of merit are 0.29 and 0.38 at 750K, respectively.

摘要

通过水相法制备了均匀的无表面活性剂硒化铜（Cu2-xSe）纳米线。全面研究了诸如铜/硒前驱体比例、硒/氢氧化钠比例和反应时间等反应参数对纳米线形成的影响。结果表明，Cu2-xSe纳米线是通过CuSe纳米片的组装形成的，同时伴随着它们的自氧化还原反应。与商业硒化铜粉末相比，对所得的Cu2-xSe纳米线作为潜在的热电候选材料进行了探索。合成样品和商业样品具有相似的性能，在750K时它们的优值分别为0.29和0.38。