硫化镉掺杂二氧化钛纳米管复合材料的制备、表征及其对甲基橙降解的光催化活性

Fabrication and characterization of CdS doped TiO2 nanotube composite and its photocatalytic activity for the degradation of methyl orange.

作者信息

Chung Jinwook, Kim Seu-Run, Kim Jong-Oh

机构信息

R&D Center, Samsung Engineering Co. Ltd, 415-10 Woncheon-Dong, Youngtong-Gu, Suwon, Gyeonggi-Do 443-823, Republic of Korea.

Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seongdong-Gu, Seoul, 133-791, Republic of Korea E-mail:

出版信息

Water Sci Technol. 2015;72(8):1341-7. doi: 10.2166/wst.2015.318.

DOI:10.2166/wst.2015.318

PMID:26465304

Abstract

CdS doped TiO2 nanotube composite was fabricated by chemical bath deposition, and was characterized by the structural, spectral and photoelectrochemical properties. The results of the structural and spectral properties showed that CdS particles were successfully deposited onto the surface of TiO2 nanotube. It is demonstrated that CdS doped TiO2 nanotube composite improved the light harvesting ability. Power conversion efficiency of about 0.32% was observed. This value is about 2.9 times higher than that of pure TiO2 nanotube. The CdS doped TiO2 nanotube composite possesses relatively higher photocatalytic activity and photodegradation efficiency than that of pure TiO2 nanotube under UV light irradiation, and the degradation efficiency of methyl orange was about 42% at UV intensity of 32 W.

摘要

采用化学浴沉积法制备了硫化镉掺杂的二氧化钛纳米管复合材料，并对其结构、光谱和光电化学性质进行了表征。结构和光谱性质结果表明，硫化镉颗粒成功沉积在二氧化钛纳米管表面。结果表明，硫化镉掺杂的二氧化钛纳米管复合材料提高了光捕获能力。观察到功率转换效率约为0.32%。该值约为纯二氧化钛纳米管的2.9倍。在紫外光照射下，硫化镉掺杂的二氧化钛纳米管复合材料比纯二氧化钛纳米管具有相对更高的光催化活性和光降解效率，在32 W的紫外光强度下，甲基橙的降解效率约为42%。