Accession Number : ADA303985

Title :   High Efficiency TiO2 Photocatalysts by the Sol-gel Process.

Descriptive Note : Final rept. 1 Apr-30 Sep 95,

Corporate Author : CHEMAT TECHNOLOGY INC NORTHRIDGE CA

Personal Author(s) : Huang, Yuhong ; Chu, Cheng-Jye

PDF Url : ADA303985

Report Date : 25 OCT 1995

Pagination or Media Count : 45

Abstract : Objective of Phase I project is to demonstrate that the dye-sensitized and doped materials by sol-gel process can be used in the photocatalytic reaction for oxidation of chemical wastes under the simulated solar irradiation, and to develop innovative technologies to improve the efficiency of photodegradation of chemical waste. In Phase I research, we met the following goals: (1) Development of various technologies on fabrication of TiO2 materials including powders, and porous aerogels with much higher specific surface area comparing to commercial TiO2 anatase powder-Degussa P25 powder. (2) Characterization of crystallographic phase development, morphologies and surface area of materials using XRD, SEM and BET analyser. (3) Investigation on effects of various parameters, such as tungsten doping, dye-sensitization crystallographic phase, morphologies and specific surface area, on efficiency of photodegradation of chemical waste under the simulated solar radiation. (4) Improvements of photocatalytic efficiency by developing innovative technologies, such as using aerosol and aerogel routes with doping and sensitized dye. jg p8

Descriptors :   *PHOTOCHEMICAL REACTIONS, *CATALYSIS, *TITANIUM DIOXIDE, *SOL GEL PROCESSES, SIMULATION, AEROSOLS, CHEMICALS, MATERIALS, POWDERS, EFFICIENCY, SURFACES, OXIDATION, RESPONSE, DOPING, DYES, IRRADIATION, SOLAR RADIATION, WASTES, TUNGSTEN, CRYSTALLOGRAPHY, SENSITIZING, PHOTODEGRADATION.

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Radiation and Nuclear Chemistry
      Solid Wastes Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE