Preparation of TiO2-diatomite composite photocatalytic materials by gas sol-gel method
MAO Zhengnan
SHEN Shukun
MAO Yuyang
LU Yaxing
LI Xuefei
LIU Xiaobang
HU Daodao
Abstract：Diatomite-TiO2 composite materials were synthesized by the in-situ hydrolysis-condensation reaction between tetrabutyl titanate (TBOT) and porous diatomite in an ammonia atmosphere.The morphology,composition and catalyst efficiency of the composite materials were characterized by scanning electron microscopy (SEM),X-ray diffraction (XRD),energy dispersive X-ray spectroscopy (EDS) and UV spectrophotometer,respectively.Meanwhile,the methyl orange was catalyzed by the diatomite-TiO2 composite materials.The results indicate that the nano-sized TiO2 particles are generated in-situ on the surface and inner pores of the diatomite by the hydrolysis and condensation of TBOT under aqueous vapor.The prepared material maintains bimodally texture of porous diatomite and nano-spherical TiO2.The experiment of the degradation of the methyl orange proves that the composite materials possess photocatalytic performance.
Keywords：diatomitetitanium dioxidegas phase sol-gel methodphotocatalysis
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 24-27 )