MIL-53（FeNiCo）修饰BiVO4光阳极用于高效光电化学水氧化

IF 3.5 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Dalton Transactions Pub Date : 2025-01-08 DOI:10.1039/D4DT03089C

Leiting Si, Jiawei Yang and Guang Liu

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引用次数: 0

摘要

BiVO4被认为是光电化学水分解技术的重要候选材料之一。然而，电荷分离效率低和水氧化动力学差限制了其在PEC水裂解中的性能。本研究采用简单的水热沉积法构建了BiVO4/MIL-53（FeNiCo）光阳极，在AM 1.5 G光照射下表现出优异的水氧化能力，在1.23 VRHE下光电流密度为3.53 mA cm-2，约为纯BiVO4的3.2倍。电化学测试结果表明，MIL-53（FeNiCo）的修饰可以增强电荷传递，加快水氧化反应动力学，从而使PEC具有优异的水裂解性能。PEC稳定性也显著提高，表明MIL-53（FeNiCo）允许BiVO4用于水氧化，以实现稳定的PEC水氧化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

An MIL-53(FeNiCo) decorated BiVO4 photoanode for efficient photoelectrochemical water oxidation†

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An MIL-53(FeNiCo) decorated BiVO4 photoanode for efficient photoelectrochemical water oxidation†

BiVO₄ is considered as one of the important candidate materials for photoelectrochemical water splitting technology. However, the low efficiency of charge separation and poor kinetics of water oxidation limit its performance in PEC water splitting. In this work, a BiVO₄/MIL-53(FeNiCo) photoanode was constructed by a facile hydrothermal deposition method, exhibiting excellent water oxidation ability under AM 1.5 G light irradiation, and achieving a photocurrent density of 3.53 mA cm⁻² at 1.23 V_RHE, which is about 3.2 times that of pure BiVO₄. The electrochemical test results demonstrate that the decoration of MIL-53(FeNiCo) could enhance the charge transfer and accelerate the kinetics of water oxidation reaction, thus leading to excellent PEC water splitting performance. The PEC stability is also significantly improved, indicating that MIL-53(FeNiCo) allows BiVO₄ to be used for water oxidation for stable PEC water oxidation.

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来源期刊

Dalton Transactions 化学-无机化学与核化学

CiteScore

6.60

自引率

7.50%

发文量

1832

审稿时长

1.5 months

期刊介绍： Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.