The formation of H2O2 in the decomposition of HCOOH in water with TiO2 or Pd/TiO2 as catalyst under irradiation with one of the three types of UV lamps (blacklight blue fluorescent lamp, BL; germicidal lamp, GL; ozone lamp, OL) was investigated. Irradiation with UV light from the BL synthesized H2O2 from water in the presence of the photocatalyst. Similarly, irradiation with UV light from the BL or GL decomposed HCOOH in the presence of the photocatalyst. Under irradiation with every light source, HCOOH was decomposed more quickly with Pd/TiO2 than with TiO2. The rate of decomposition of HCOOH was large and in decreasing order of OL, GL and BL. The rate and amount of H2O2 formed were also large and in the same order. The result showed that the initial rate of decomposition of HCOOH was directly proportional to the initial rate of formation of H2O2, indicating that the photocatalytic activity was strongly dependent on the capability of the photocatalyst to form H2O2.
|Number of pages||7|
|Journal||Huagong Xuebao/Journal of Chemical Industry and Engineering (China)|
|Publication status||Published - Jul 2006|
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)