期刊
CATALYSTS
卷 13, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/catal13091237
关键词
S-modified MXene; electrocatalytic oxidation degradation; mechanism
S-modified MXene was prepared to improve the catalytic activity of MXene in the electrocatalytic degradation of tetracycline hydrochloride. The S modification promoted the generation of reactive oxygen species and active chlorine, accelerating the degradation of tetracycline hydrochloride.
S-modified MXene (Ti3C2Tx@S-5) was prepared to improve the catalytic activity of MXene in the electrocatalytic degradation of tetracycline hydrochloride (TC). Here, S groups in the form of Ti-S and S-O species were anchored onto MXene, resulting in superior conductivity and surface activity. Ti3C2Tx@S-5 exhibited an excellent performance of 100% TC degradation under the conditions of 25 & DEG;C, a pH of 6, a TC concentration of 10 mg L-1, and an applied current of 20 mA. Radical quenching and EPR analyses revealed that & BULL;O2- and 1O2 played dominant roles in Ti3C2Tx@S-5 and Ti3C2Tx systems. Furthermore, S modification promoted the triggering of & BULL;OH and active chlorine, which contributed to the acceleration of TC degradation. The involvement of these active substances in degradation pathways was further proven. This research advances the S modification of MXene and improves TC degradation by promoting the triggering of & BULL;OH and active chlorine, broadening the applicability of MXene material.
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