Articles
  • Preparation of nano-TiO2/ purified diatomite coating and its photocatalytic properties of formaldehyde degradation

  • Lijian Wanga, Junwei Zhaoa, Yujiang Wanga and Shuilin Zhengb,*

  • aMaterials Science and Engineering School & Henan Key Laboratory of Special Protective Materials, Luoyang Institute of Science and Technology, Luoyang 471023, P. R. China
    bSchool of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, P. R. China

Abstract

The nano-TiO2 / purified diatomite composite materials with core-shell structures were prepared by hydrolysis precipitation using purified diatomite as carrier and titanium sulfate as precursor. The composite materials were characterized by transmission electron microscope (TEM), X-ray diffraction (XRD), low temperature nitrogen adsorption and mercury porosimetry. The photocatalytic composite coating based on the nano-TiO2 / prified diatomite composite materials was prepared and its properties of formaldehyde degradation were investigated. Meanwhile, the degradation mechanism of formaldehyde gas was discussed. The results showed that the nano-TiO2 / prified diatomite composite materials were formed core-shell structures, and the TiO2 nanoparticles were anatase with the average size of about 10 nm．The test results show that the formaldehyde purification performance of the coatings has met the technical requirements of Class I materials in the Chinese national standard JC/T 1074-2008.


Keywords: Nano-TiO2 / prified diatomite, Photocatalytic coating, Degradation, Formaldehyde gas

This Article

  • 2020; 21(6): 751-756

    Published on Dec 31, 2020

  • 10.36410/jcpr.2020.21.6.751
  • Received on Nov 25, 2019
  • Revised on Mar 13, 2020
  • Accepted on Mar 16, 2020

Correspondence to

  • Shuilin Zheng

  • School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, P. R. China
    Tel : +8637965928196 Fax: +8637965928196

  • E-mail: shuilinzheng8@gmail.com