Effect of Lactic Acid on the Photoelectrocatalytic Water Splitting of Hematite Prepared by Hydrothermal Method

Longzhu Li; Huidong Tang; Yuwei Chen; Rong Yang; Daxiang Tian; Zhidong Chen

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자료유형: 학술저널

저자정보: Longzhu Li (Changzhou Vocational Institute of Engineering) Huidong Tang (Changzhou Vocational Institute of Engineering) Yuwei Chen (Changzhou Vocational Institute of Engineering) Rong Yang (Changzhou Vocational Institute of Engineering) Daxiang Tian (Changzhou University) Zhidong Chen (Changzhou University)

저널정보: 대한금속·재료학회 Electronic Materials Letters Electronic Materials Letters Vol.16 No.5

발행연도: 2020.1

수록면: 481 - 490 (10page)

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The photoelectrocatalytic water splitting performance of the pristine hematite is limited because of its poor bulk chargeseparation efficiency. In this study, the lactic acid modified hematite films were grown in situ on Fluorine-doped tin oxidesubstrates by hydrothermal method and then annealed in nitrogen atmosphere. At 1.5 V versus RHE, the photocurrent densityof the optimal lactic acid modified hematite photoanode (0.075LA-Fe2O3) was 1.5 mA cm−2, which was three times that ofthe based hematite (0.5 mA cm−2). The enhanced photoelectrocatalytic performance of the lactic acid modified hematitewas attributed to its increased bulk charge separation efficiency caused by the oxygen vacancies and island-like pattern, aswell as its improved surface charge injection efficiency. The effect of lactic acid on the morphology, crystalline structure andphotoelectrocatalytic performance of the hematite photoanode are studied by systematical characterization.

#Hematite · Photoelectrocatalytic water splitting · Lactic acid · Oxygen vacancy

참고문헌 (31)

참고문헌 신청

Li, Z. / 2013 / Photoelectrochemical cells for solar hydrogen production : current state of promising photoelectrodes, methods to improve their properties, and outlook / Energy Environ. Sci 6:347

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Zhao, X. / 2017 / New insight into the roles of oxygen vacancy in hematite for solar water splitting / Phys. Chem. Chem. Phys 19:1074

Phuan, Y. W. / 2017 / Prospects of electrochemically synthesized hematite photoanodes for photoelectrochemical water splitting : a review / J. Photochem. Photobiol. C 33:54

Wen, P. / 2020 / A Ni 2 P nanocrystal cocatalyst enhanced TiO 2 photoanode towards highly efficient photoelectrochemical water splitting / Chem. Eng. J 385:123878

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