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Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials
Published on: March 23, 2017
Recent progress of BiVO4-based photoanodes for photoelectrochemical water splitting
Yandi He1,2,3, Shurui Sun2,3, Beijia Zhang2,3
1College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China.
Abstract:
The photoelectrochemical (PEC) system, which harvests abundant solar energy and stores it in the form of hydrogen energy, offers an efficient, environmentally friendly, and renewable solution to address global energy demands and environmental concerns. Monoclinic bismuth vanadate (BiVO4) has attracted widespread attention over the past decades due to its Earth abundance, non-toxicity, suitable band structure, and visible-light absorption capability. However, its practical PEC water oxidation performance remains severely hindered by the rapid recombination of electric charge, insufficient active sites, and intrinsic kinetic limitations. In this review, we summarize the recent advances in BiVO4-based photoanodes for PEC water splitting. We first introduce the basic working mechanisms of PEC water oxidation and then delve into the primary factors restricting its efficiency. Subsequently, we summarize and analyze the latest modification strategies-including bulk engineering, surface engineering, and interface engineering-and elucidate their underlying mechanisms for improving charge separation and reaction kinetics. Finally, this paper looks ahead at the future development directions of BiVO4-based photoanodes.
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