What question did this study set out to answer?

This work aims to enhance the photocatalytic reduction of Cr(VI) using interfacial engineering methods.

May 6, 2026Langmuir0 citations

Synergistic Enhancement of Photocatalytic Cr(VI) Reduction via TA-Assisted Charge Separation in MIL-88A(Fe)/BiVO 4 Heterojunction

FLFangqun LiangGuilin University of Technology DXDongyu XieGuilin University of Technology MZMengxin ZhaoGuilin University of Technology

Key Points

This work aims to enhance the photocatalytic reduction of Cr(VI) using interfacial engineering methods.
Explored the charge separation mechanism facilitated by TA (tannic acid).
Utilized MIL-88A(Fe)/BiVO4 heterojunction as a photocatalyst.
Analyzed the role of TA in suppressing charge recombination.
Evaluated the stability and efficiency of the catalysts under photocatalytic conditions.
TA acted as a hole scavenger, improving electron lifetime.
The MoF-based catalyst showed enhanced photocatalytic activity for Cr(VI) reduction.
Interfacial engineering strategies were found effective in improving stability.

Abstract

redox cycle. Meanwhile, TA acted as an efficient hole scavenger, suppressing charge recombination and thereby ensuring a high concentration and lifetime of photogenerated electrons for efficient Cr(VI) reduction. This work proposed an effective interfacial engineering strategy to synergistically enhance the photoactivity and stability of MOF-based catalysts, offering insights for developing advanced catalysts for Cr(VI) reduction.

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