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Xiaogang Zheng,Liping Wang,Yuanliang Zhou,Meiyin Luo,Hongyan Li,Zongyang Bo,Weixin Zheng,Chenggong Chang,Jing Wen,Jinmei Dong 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.126 No.-
Biochar-based composites have been intensively applied in wastewater treatment. To boost theadsorption-photocatalytic capacity of biochar for dyes elimination, S-doped biochar was commodifiedby NiS and MgO (NiS-Mg/S-BC) via the one-pot sulfurization at high temperature. The functional groupsin NiS-Mg/S-BC provided the abundant vacant sites for RhB adsorption and photocatalysis, and the junctioninterface among NiS, MgO, and S-doped biochar was likely to form the channels for the separationand transfer of photo-induced e-/h+ pairs. NiS-Mg/S-BC presented the better adsorption-photocatalyticcapacity of RhB than S-doped biochar, NiS and MgO modified biochar. Langmuir and second-order modelswell described the adsorption behaviors of NiS-Mg/S-BC. The removal efficiency of optimal 2b-NiS-Mg/SBCfor 400 mg/L RhB solution was 96.98% within 120 min, and its adsorption capacity based on secondordermodel was 802.49 mg g1. The photo-corrosion induced to the declined removal efficiency of 2b-NiS-Mg/S-BC to 94.13% after five cycles.