文献类型：期刊文献

英文题名：New metal-free catalytic degradation systems with carbon dots for thymol blue

作者：Zheng, Cui[1];An, Xueqin[1];Yin, Tianxiang[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2017

卷号：41

期号：22

起止页码：13365

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000414440000021)】；

基金：This research was supported by the National Natural Science Foundation of China (21473055 and 21773064).

语种：英文

摘要：New metal-free catalytic systems with carbon dots (CDs) have been presented for the degradation of thymol blue at room temperature. It was found that degradation efficiency was influenced by the pH value, the concentration of H2O2 and the addition of KI. The degradation mechanisms of catalytic systems were studied by means of electron spin resonance and a free radical quenching technique. The results show that HO center dot and O-center dot(2)- originating from the decomposition of H2O2 in the presence of CDs contribute to the degradation of the dyes. The most important merits of the catalytic system are high degradation efficiency of thymol blue in a near-neutral solution and avoiding secondary pollution from metal ions, which make them environmentally-friendly systems for the treatment of pollutants.