Molybdenum phosphide (MoP) with dual active sites for the degradation of diclofenac in Fenton-like system

Autor: Li, Xiuying, Huang, Shuangqiu, Xu, Huaihao, Deng, Yuepeng, Wang, Zhu, Liu, Zhao-Qing
Zdroj: Chinese Chemical Letters; 20210101, Issue: Preprints
Abstrakt: The leaching and non-recoverability of mental ions have always limited the practical application of Fenton-like processes. For the first time, we synthesized molybdenum phosphide (MoP) with dual active sites for the degradation of diclofenac (DCF) in the Fenton-like process. The DCF degradation rate constant (k)of MoP + H2O2process was calculated to be 0.13 min-1within 40 min, indicating a highly efficient catalytic ability of MoP. In addition, this catalyst exhibits a stable structure and good activity, which could apply in a broad pH range, different ions solution and real wastewater condition. Accordingly, this efficient catalytic capability may be attributed to the presence of the metal sites Moδ+and the electron-rich sites Pδ−in MoP, which could induce the generation of hydroxyl radical (•OH) and superoxide radical (•O2−) through electron transfer, resulting in the effective removal of DCF. This study provides an idea for the optimization of Fenton-like technologies and environmental remediation.
Databáze: Supplemental Index