Preparation of TiO2 Nanoparticle/Nanotube Composites via a Vapor Hydrolysis Method and Their Photocatalytic Activities. (23rd October 2011)

• Record Type: Journal Article
• Authors: Yu, Weiwei; Yuan, Sujun; Li, Yaogang; Zhang, Qinghong; Wang, Hongzhi
• Other Names: Hu A. Academic Editor.; Obraztsov A. N. Academic Editor.; Swami A. Academic Editor.; Tabet N. Academic Editor.
• Is Part Of: ISRN nanotechnology. Volume 2011(2011)
• Publication Date: 2011-10-23
• Subjects: Nanotechnology -- Periodicals; Nanotechnology; Nanotechnology; Electronic journals; Periodicals; Electronic journals; 620.5
• DOI: 10.5402/2011/582534
• Languages: English
• ISSNs: 2090-6064

Abstract

Abstract : TiO2 nanoparticle/nanotube composites were prepared by a vapor hydrolysis method and were characterized by X-ray diffraction, transmission electron microscopy, and N2 isothermal adsorption-desorption. The well-crystallized TiO2 nanoparticles were uniformly deposited onto the surface of TiO2 nanotubes. The photocatalytic activity of the composites was evaluated by the degradation of acid red G and phenol solution under UV irradiation. The results showed that the photocatalytic activities of the modified composites were significantly enhanced compared to the pristine nanotubes. In particular, the 50 wt% TiO2 nanoparticle/nanotube composite obtained at 120°C exhibited a remarkable ARG degradation efficiency of 90% after irradiation for 30 minutes and a phenol degradation efficiency of 93% after irradiation for 2 hours.