Low-efficiency charge transfer is a critical factor to limit the photocatalytic H_(2)evolution activity of semiconductor *** interfacedesign is a promising approach to achieve high chargetransfer efficiency for ***,a...
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Low-efficiency charge transfer is a critical factor to limit the photocatalytic H_(2)evolution activity of semiconductor *** interfacedesign is a promising approach to achieve high chargetransfer efficiency for ***,a new 2 d/2 d atomic double-layer WS_(2)/Nb_(2)O_(5)shell/core photocatalyst(dLWS/Nb_(2)O_(5))is *** atom-resolved HAAdF-STEM results unravel the presence of an unusual 2 d/2 dshell/coreinterface in dLWS/Nb_(2)O_(5).Taking advantage of the advanced femtosecond-resolved ultrafast TAS spectra,the average lifetime of charge carriers for dLWS/Nb_(2)O_(5)(180.97 ps)is considerably shortened as compared to that of Nb_(2)O_(5)(230.50 ps),strongly indicating that the 2 d/2 dshell/coreinterface enables dLWS/Nb_(2)O_(5)to achieve ultrafast charge transfer from Nb_(2)O_(5)to atomic double-layer WS_(2),thus yielding a high photocatalytic H_(2)evolution rate of 237.6 mmol/h,up to10.8 times higher than that of pure Nb_(2)O_(5)*** study will open a new window for the development of high-efficient photocatalytic systems through the interfacedesign.
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