Abstract
Because of the current COVID-19 outbreak all over the world, the problem of antiviral drugs entering water has become increasingly serious. Arbidol hydrochloride (ABLH) is one of the most widely used drugs against COVID-19, which has been detected in sewage treatment plant sediments after the COVID-19 outbreak. However, there has been no report on the degradation of ABLH. In order to remove ABLH we prepared a novel photocatalyst composed of Ti 3 C 2 MXene and supramolecular g-C 3 N 4 (TiC/SCN) via a simple method. The properties of the material were studied by a series of characterizations (SEM, TEM, EDS, XRD, FTIR, UV-vis, DRS, XPS, TPC, PL, EIS and UPS), indicating the successful preparation of TiC/SCN. Results show that 99% of ABLH was removed within 150 min under visible light illumination by the 0.5TiC/SCN (containing 0.5% of TiC). The performance of 0.5TiC/SCN was about 2.66 times that of SCN resulting from the formation of Schottky junction. Furthermore, under real sunlight illumination, 99.2% of ABLH could be removed by 0.5TiC/SCN within 120 min, which was better than that of commercial P25 TiO 2 . The pH, anions (NO 3 – and SO 4 2- ) and dissolved organic matter (fulvic acid) could significantly affect the ABLH degradation. Moreover, three possible degradation pathways of ABLH were proposed, and the toxicities of the corresponding by-products were less toxic than ABLH. Meanwhile, findings showed that the superoxide radicals played a major role in the photocatalytic degradation of ABLH by 0.5TiC/SCN. This study provides a well understanding of the mechanism of ABLH degradation and provides a valuable reference for the treatment of ABLH in water.
Keywords: Arbidol hydrochloride; COVID-19; Photocatalytic degradatiion; Schottky junction; Supramolecular g-C(3)N(4); Ti(3)C(2).
【저자키워드】 COVID-19, arbidol hydrochloride, Ti(3)C(2)., Supramolecular g-C(3)N(4), Schottky junction, Photocatalytic degradatiion, 【초록키워드】 Treatment, Arbidol, Toxicity, drug, antiviral drug, COVID-19 outbreak, pathway, Degradation, mechanism, SEM, Affect, TEM, Result, resulting, significantly, composed, provide, less, increasingly, superoxide radical, 【제목키워드】 Degradation,