A new TiO2 nanorods/MoTe2 quantum dots/Al2O3 composite photocatalyst for efficient photoelectrochemical water splitting under simulated sunlight

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外文摘要：The solar-to-hydrogen conversion using the photoelectrochemical(PEC)method is a practical approach to producing clean energy.However,it relies on the availability of photocatalyst materials.In this work,a novel photocatalyst comprising molybdenum telluride quantum dots(MoTe2 QDs)-modified titanium dioxide nanorods(TiO2 NRs)was prepared for the enhancement of the PEC water splitting performance after combination with a Al2O3 layer using the atomic layer deposition(ALD)technique.MoTe2 QDs were initially prepared,and then they were loaded onto TiO2 NRs using a warm water bath-based heating method.After a layer of Al2O3 was deposited onto resulted TiO2 NRs/MoTe2 QDs,the composite TiO2 NRs/MoTe2 QDs/Al2O3 was finally obtained.Under simulated sunlight(100 mW·cm-2),such a composite exhibited a maximum photocurrent density of 2.25 mA·cm-2 at 1.23 V(versus RHE)and an incident photon-to-electron conversion efficiency of 69.88％at 380 nm,which are 4.33 and 6.66 times those of pure TiO2 NRs,respectively.Therefore,the composite photocatalyst fabricated in this work may have promising application in the field of PEC water splitting,solar cells and other photocatalytic devices.

外文关键词：

MoTe2 quantum dotTiO2 nanorodAl2O3atomic layer depositionphotoelectrochemistry

作者：

Jie Meng、Hongmei Liu、Sainan Zhang、Baogui Ye、Min Feng、Daoai Wang

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作者单位：

School of Chemistry and Chemical Engineering,Lanzhou Jiaotong University,Lanzhou 730000,China

Qingdao Center of Resource Chemistry and New Materials,Qingdao 266100,China

Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai,Yantai 265503,China

State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaKey Research and Development Program in Shandong ProvinceProgram for Taishan Scholars of Shandong ProvinceKey Research Program of the Chinese Academy of SciencesWestern Light Project of CASMajor Science and Technology Projects in Gansu ProvinceMajor Program of the Lanzhou Institute of Chemical Physics,CAS

项目编号：

52205230U21A2046SYS202203TS20190965ZDBS-ZRKJZ-TLC010xbzgzdsys-20211822ZD6GA002ZYFZFX-5for providing financial support

出版年：

2024

DOI：

10.1007/s11706-024-0686-8

材料学前沿

高等教育出版社

材料学前沿

CSTPCD

影响因子：0.337

ISSN：2095-025X

年,卷(期)：2024.18(2)