点击次数：
论文类型：期刊论文
发表时间：2013-01-15
发表刊物：JOURNAL OF HAZARDOUS MATERIALS
收录刊物：SCIE、EI、PubMed
卷号：244
页面范围：681-688
ISSN号：0304-3894
关键字：SnIn4S8; Surfactants; Flower-like; Photocatalytic; Cr(VI) reduction
摘要：Photocatalytic reduction of aqueous Cr(VI) was successfully achieved on nanostructured SnIn4S8. The SnIn4S8 particles with flower-like nanostructure were synthesized via a facile solvothermal method. UV-vis diffuse reflectance spectra (DRS) indicated that the SnIn4S8 particles had strong absorption in visible region and the band gap was estimated to be from 2.27 to 2.35 eV. The photocatalytic reduction of aqueous Cr(VI) by flower-like SnIn4S8 was evaluated under visible light (lambda > 400 nm) irradiation. The polyvinyl pyrrolidone (PVP) assisted SnIn4S8 sample exhibits excellent removal efficiency of Cr(VI) (similar to 97%) and good photocatalytic stability. The predominant photocatalytic activity is due to its large surface area, strong absorption in visible-light region and excellent charge separation characteristics. (c) 2012 Elsevier B.V. All rights reserved.