Abstract
Photocatalytic decomposition of CCl4 (80 mg L-1 in H2O) effected by Zr-MCM-41 (Zr incorporated in the amorphous wall of MCM-41) has been studied in the present work. Experimentally, photocatalytic decomposition of CCl4 on Zr-MCM-41 was enhanced by about 1.96 times over that on ZrO2. Photocatalytic decomposition of CCl4 may proceed via a two-electron transfer process that yields mainly CHCl3, Cl- and H2. Since little C2Cl2, C2Cl6 or CH2Cl2 was found, it is unlikely that CHCl3 involved in the secondary photocatalytic degradation process. In addition, photocatalytic splitting of H2O on Zr-MCM-41 was also enhanced. The yield of H2 was 6.5 mmol (g ZrO2)-1. About 68% of this hydrogen (6.5 mmol (g ZrO2)-1) was consumed in the photocatalytic decomposition of CCl4.
Original language | English |
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Pages (from-to) | 461-464 |
Number of pages | 4 |
Journal | Journal of Hazardous Materials |
Volume | 151 |
Issue number | 2-3 |
DOIs | |
Publication status | Published - 2008 Mar 1 |
All Science Journal Classification (ASJC) codes
- Environmental Engineering
- Environmental Chemistry
- Waste Management and Disposal
- Pollution
- Health, Toxicology and Mutagenesis