Characteristics and Performance of Nanozinc Oxide/Mesoporous Silica Gel Photocatalytic Composite Prepared by a Sol-Gel Method. (9th March 2015)

• Record Type: Journal Article
• Authors: Xu, Hang; Yu, Tianlong; Liu, Yi
• Other Names: Kelarakis Antonios Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2015(2015)
• Publication Date: 2015-03-09
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2015/154865
• Languages: English
• ISSNs: 1687-4110

Abstract

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 m 2 /g and 0.7 nm, respectively. 50% ZnO content in a composite calcinated at 200 ∘ C exhibited the best photocatalytic activity. The removal of Acid Red 18 under solar irradiation was 10% higher than ultraviolet light.