Abstract
CuInS2 and MgO-modified S-doped biochar (CIS-Mg/S-BC) was prepared by one-step pyrolysis to improve the adsorption-photocatalytic performance of biochar for in RhB removal. The photo-induced electrons and holes were efficiently separated and migrated at the junction interface among CuInS2, MgO, and S-doped biochar, enlarging visible light absorption. Langmuir and second-order models well described the adsorption isotherms and kinetics of S-BC-based hybrids, respectively. The best removal efficiency over 2d-CIS-Mg/S-BC for 400 mg L-1 RhB solution was 97.67 % within 120 min while reduced to 95.62 % after five cycles. Therefore, CIS-Mg/S-BC composites have a broad application prospect in industrial wastewater purification.
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