Covalently bonded bridging between different semiconductors is a remarkable approach to improve the transfer of charge carriers at interfaces.In this study,we designed a ternary heterojunction(MBG)combining of molybdenum diselenide(MoSe2),black phosphorus nanosheets(Bpn)and graphitic car-bon nitride(GCN).Among this MBG of MoSe2/Bpn/GCN,(i)the covalently bonded bridging effect be-tween Bpn/GCN facilitates directional charge carrier transfer,meanwhile(ii)a Z-scheme heterojunction is formed between MoSe2/GCN to enhance the separation of photogenerated carriers.Furthermore,(iii)this composite exhibits an increased absorption for visible light.Using this MBG,photocatalytic degradation of over 98％of moxifloxacin is achieved within 20 min,with O2·-confirmed as the primary photocatalytic active species.These findings provide novel insights into the construction of efficient heterojunction by covalently bonded bridging.
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