Saquib M, Abu Tariq M, Haque M M, Muneer M
Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India.
J Environ Manage. 2008 Jul;88(2):300-6. doi: 10.1016/j.jenvman.2007.03.012. Epub 2007 May 8.
The photocatalytic degradation of a dye derivative, C.I. disperse blue 1 (1), has been investigated under UV light irradiation in the presence of TiO2 and H2O2 under a variety of conditions. The degradation was studied by monitoring the change in substrate concentration employing UV spectroscopic technique as a function of irradiation time. The degradation was studied under different conditions such as different types of TiO2, reaction pH, catalyst and substrate concentration containing hydrogen peroxide (H2O2), besides molecular oxygen in the presence of TiO2. The degradation of dye was also investigated under sunlight and the efficiency of degradation was compared with that of the artificial light source. The degradation rates were found to be strongly influenced by all the above parameters. The photocatalyst Degussa P25 was found to be more efficient for the degradation of the dye.
在多种条件下，研究了在二氧化钛（TiO₂）和过氧化氢（H₂O₂）存在下，于紫外光照射下染料衍生物C.I.分散蓝1（1）的光催化降解情况。通过采用紫外光谱技术监测底物浓度随照射时间的变化来研究降解过程。除了在TiO₂存在下的分子氧外，还在不同条件下进行了研究，如不同类型的TiO₂、反应pH值、含有过氧化氢（H₂O₂）的催化剂和底物浓度。还在阳光下研究了染料的降解情况，并将降解效率与人工光源的情况进行了比较。发现降解速率受到上述所有参数的强烈影响。发现光催化剂德固赛P25对染料的降解更有效。
