The Development of the High Efficiently TiO2-Bx-Ny-Vz Photocatalyst Fot the Removal of Tol and DMS Vapor

The manufacturing processes of the photoelectric material and the petrochemical industry involves to the volatile organic vapor emissions or fugacity, if they do not effectively control the air pollutants. As usual, VOCs are potential danger to human health and odor problem. Heterogeneous photocatalysis for VOCs treatment technologies has attracted the attention of many researchers .The heterogeneous photocatalysis mostly based on anatase TiO2 is considered as one of the most promising methods to decompose VOCs. However, the leading TiO2 photocatalyst requires ultraviolet (about 3 – 5 % of solar radiation) irradiation due to its wide band gap (Eg: 3.2eV for anatase TiO2), which seriously restricts its solar efficiency. In order to increase the effective use of solar energy, modified TiO2 were usually adopted. Boron and nitrogen-codoped TiO2which has a low energy gap onto TiO2 has been extensively studied. The introduction of B and N into the TiO2 lattice could effectively tune the band gap of TiO2 and extend its optical response to the visible-light region. In this research, the study focus on the development of the highly efficient photocatalyst for controlling the VOCs and odor pollutants. The achievement will also provide the economic and feasible technology for reducing the energy use and the carbon emission. So, the main targets are to establish the manufactured processes and parameters of the highly efficient TiO2-Bx-Ny-Vz photocatalyst for the removal of toluene and dimethyl sulfur vapor. The key indexes are that the degradation efficiency of the degradation of TOL and DMS on TiO2-Bx-Ny-Vz is more 30% than those of P25TiO2 in the visible-light region. Moreover in the ultraviolet-light region the degradation efficiency can also above 20%. The majors contents of the project work in this research to be as follows: (1) To establish the manufactured processes and parameters of the highly efficient TiO2-Bx-Ny-Vz photocatalyst (2) To analyze the physicochemical characteristics of the highly efficient TiO2-Bx-Ny-Vz photocatalyst (3) To determine the activity of the highly efficient TiO2-Bx-Ny-Vz photocatalyst to degradation TOL and DMS vapor. (4) To obtain the kinetics parameters for photo-reaction by the Langmuir-Hinshelwood kinetics model. (5) To analyze the destruction efficiencies of TOL and DMS vapor and to establish the reaction mechanisms (6) To develop the photo-reaction system of the highly efficient TiO2-Bx-Ny-Vz photocatalyst.

Project ID:PB10107-1734
External Project ID:NSC101-2221-E182-039