Lei Yanhua, Huo Da, Liu Hui, Cheng Sha, Ding Mengchao, Jiang Bochen, Zhang Fei, Zhang Yuliang, Gao Guanhui
Institute of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.
Qingdao Product Quality Testing Research Institute, Qingdao 266061, China.
Polymers (Basel). 2023 Sep 27;15(19):3900. doi: 10.3390/polym15193900.
MoS has garnered considerable attention as an exceptional co-catalyst that is capable of significantly enhancing the efficiency of HO decomposition in advanced oxidation processes (AOPs). This improvement allows for a reduction in the required amounts of HO and Fe. In this study, we investigated the cyclic durability of photo-Fenton catalysts, focusing on the degradation of pollutants through the introduction of PPy into heterogeneous 1T-2H MoS units. The resulting photothermal-Fenton catalysts, comprising non-ferrous Fenton catalysts, demonstrated excellent degradation performance for simulated pollutants. In comparison with 1T-2H MoS, the PPy@1T-2H MoS composite exhibited remarkable stability and photothermal enhancement in the photo-Fenton degradation of methylene blue (MB) under visible light irradiation. The photo-Fenton reaction efficiently degraded contaminants, achieving 99% removal within 5 min and 99.8% removal within 30 min. Moreover, the co-catalyst complex displayed enhanced cyclic stability during the photo-Fenton reaction, with a contaminant removal efficiency of 92%, even after the 13th cyclic test. The combined effects of PPy and 1T-2H MoS demonstrated improved efficiency in both photocatalytic and photo-Fenton catalytic reactions. Furthermore, PPy@1T-2H MoS exhibited outstanding performance in the photothermal evaporation of water, achieving an efficiency of 86.3% under one solar irradiation.
作为一种卓越的助催化剂，二硫化钼（MoS）在高级氧化过程（AOPs）中能够显著提高羟基自由基（HO）分解效率，因而备受关注。这种改进使得所需的HO和铁的用量得以减少。在本研究中，我们研究了光芬顿催化剂的循环耐久性，重点关注通过将聚吡咯（PPy）引入异质1T-2H MoS单元来降解污染物。由此得到的光热芬顿催化剂，包括非铁芬顿催化剂，对模拟污染物表现出优异的降解性能。与1T-2H MoS相比，PPy@1T-2H MoS复合材料在可见光照射下对亚甲基蓝（MB）的光芬顿降解中表现出显著的稳定性和光热增强效果。光芬顿反应有效地降解了污染物，在5分钟内实现了99%的去除率，在30分钟内实现了99.8%的去除率。此外，助催化剂复合物在光芬顿反应过程中显示出增强的循环稳定性，即使在第13次循环测试后，污染物去除效率仍为92%。PPy和1T-2H MoS的联合作用在光催化和光芬顿催化反应中均显示出提高的效率。此外，PPy@1T-2H MoS在水的光热蒸发方面表现出色，在一个太阳辐射下实现了86.3%的效率。
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