Surface co-catalyst modification is a feasible strategy to boost photocatalytic activity.However,it usually meets the issue of limited contact area and poor interfacial interaction,which greatly affects the interfacia...Surface co-catalyst modification is a feasible strategy to boost photocatalytic activity.However,it usually meets the issue of limited contact area and poor interfacial interaction,which greatly affects the interfacial charge transfer efficiency.Herein,a self-adaptive partially oxidised W-based quantum dot(WQDs)is designed to boost the photocatalytic performance of Bi_(12)O_(17)Br_(2).Because of the formation of the strong coupled interface,the BiS1O4 site can be created with a local interfacial asymmetric configuration.This BiS_(1)O_(4)site can serve as an axial polarisation centre to drive rapid interfacial charge transport from Bi12O17Br2 to WQDs via the formed Bi-S bond.At the same time,the partially oxidised WQDs supply a higher charge aggregate state,favouring the small molecule coordination and activation.Benefiting from these features,the greatly improved photocatalytic performance can be achieved for WQDs/Bi_(12)O_(17)Br_(2).This work offers a feasible approach for designing a self-adaptive partially oxidised quantum dot cocatalyst to build a strong coupled interfacial asymmetric configuration to optimise photocatalytic activity.展开更多
基金supported by the National Natural Science Foundation of China(Nos.U23A20121,22475004,22205108,22473002,and 22073001)Key Research and Development Project of Anhui Province(No.2023h11020002)+2 种基金the Natural Science Research Project for Universities in Anhui Province(No.KJ2021ZD0006)the Natural Science Foundation of Anhui Province(No.2208085MB21)Anhui Laboratory of Molecule-Based Materials(No.fzj22009).
文摘Surface co-catalyst modification is a feasible strategy to boost photocatalytic activity.However,it usually meets the issue of limited contact area and poor interfacial interaction,which greatly affects the interfacial charge transfer efficiency.Herein,a self-adaptive partially oxidised W-based quantum dot(WQDs)is designed to boost the photocatalytic performance of Bi_(12)O_(17)Br_(2).Because of the formation of the strong coupled interface,the BiS1O4 site can be created with a local interfacial asymmetric configuration.This BiS_(1)O_(4)site can serve as an axial polarisation centre to drive rapid interfacial charge transport from Bi12O17Br2 to WQDs via the formed Bi-S bond.At the same time,the partially oxidised WQDs supply a higher charge aggregate state,favouring the small molecule coordination and activation.Benefiting from these features,the greatly improved photocatalytic performance can be achieved for WQDs/Bi_(12)O_(17)Br_(2).This work offers a feasible approach for designing a self-adaptive partially oxidised quantum dot cocatalyst to build a strong coupled interfacial asymmetric configuration to optimise photocatalytic activity.
