Tailored BiVO_(4)/In_(2)O_(3)nanostructures with boosted charge separation ability toward unassisted water splitting  

作　　者：Mi Gyoung Lee Jin Wook Yang Ik Jae Park Tae Hyung Lee Hoonkee Park Woo Seok Cheon Sol ALee Hyungsoo Lee Su Geun Ji Jun Min Suh Jooho Moon Jin Young Kim Ho Won Jang 

机构地区：[1]Department of Materials Science and Engineering,Research Institute of Advanced Materials,Seoul National University,Seoul,Republic of Korea [2]Country Department of Applied Physics,Sookmyung Women's University,Seoul,Republic of Korea [3]Department of Materials Science and Engineering,Yonsei University,Seoul,Republic of Korea [4]Advanced Institute of Convergence Technology,Seoul National University,Suwon,Republic of Korea

出　　处：《Carbon Energy》2023年第6期45-59,共15页碳能源（英文）

基　　金：National Research Foundation of Korea,Grant/Award Numbers:2021M3H4A1A03057403,2021R1A6A3A03039988,2021R1A6A3A13046700,2021R1A2B5B03001851。

摘　　要：The development of new heterostructures with high photoactivity is a breakthrough for the limitation of solar-driven water splitting.Here,we first introduce indium oxide(In_(2)O_(3))nanorods(NRs)as a novel electron transport layer for bismuth vanadate(BiVO_(4))with a short charge diffusion length.In_(2)O_(3)NRs reinforce the electron transport and hole blocking of BiVO_(4),surpassing the state-of-the-art photoelectrochemical performances of BiVO_(4)-based photoanodes.Also,a tannin-nickel-iron complex(TANF)is used as an oxygen evolution catalyst to speed up the reaction kinetics.The final TANF/BiVO_(4)/In_(2)O_(3)NR photoanode generates photocurrent densities of 7.1 mAcm^(−2) in sulfite oxidation and 4.2 mA cm^(−2) in water oxidation at 1.23 V versus the reversible hydrogen electrode.Furthermore,the“artificial leaf,”which is a tandem cell with a perovskite/silicon solar cell,shows a solar-to-hydrogen conversion efficiency of 6.2%for unbiased solar water splitting.We reveal significant advances in the photoactivity of TANF/BiVO_(4)/In_(2)O_(3)NRs from the tailored nanostructure and band structure for charge dynamics.

关 键 词：bismuth vanadate HETEROJUNCTION indium oxide NANOSTRUCTURE photoelectrochemical water splitting 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TQ116.2[化学工程—无机化工]