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Journal of Nanomaterials
Volume 2015 (2015), Article ID 154865, 5 pages
http://dx.doi.org/10.1155/2015/154865
Research Article

Characteristics and Performance of Nanozinc Oxide/Mesoporous Silica Gel Photocatalytic Composite Prepared by a Sol-Gel Method

Chemical Engineering and Pharmaceutics School, Henan University of Science and Technology, Luoyang 471023, China

Received 5 January 2015; Accepted 23 February 2015

Academic Editor: Antonios Kelarakis

Copyright © 2015 Hang Xu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nano-ZnO loaded mesoporous SiO2 was prepared by sol-gel technology as a photocatalytic composite. XRD, SEM, TEM, EDX, and N2 sorption isotherms were used to characterize the nano-ZnO/mesoporous SiO2. Acid Red 18 was used as simulated pollutant to determine the photocatalytic performance of nano-ZnO/mesoporous SiO2 under ultraviolet light and solar light. The results showed that 6.4 nm ZnO was obtained and immobilized on mesoporous SiO2. Compared to the mesoporous SiO2, the surface area and average pore width of nano-ZnO/mesoporous SiO2 were reduced by 12 m2/g and 0.7 nm, respectively. 50% ZnO content in a composite calcinated at 200C exhibited the best photocatalytic activity. The removal of Acid Red 18 under solar irradiation was 10% higher than ultraviolet light.