Advances in Constructing Efficient Photocatalytic Systems for Hydrogen Peroxide Production: Insights from Synchrotron Radiation Research

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High Resolution Image Download MS PowerPoint Slide Hydrogen peroxide (H 2 O 2 ) is a promising energy carrier and is widely implemented as an eco-friendly oxidant in organic synthesis, wastewater treatment, and other industrial and healthcare sectors. The photocatalytic H 2 O 2 production using O 2 and H 2 O as raw materials, powered by sunlight, represents a green chemical process with the advantages of mild reaction conditions, controllable operation, and negligible secondary pollution. With increased focus on sustainable H 2 O 2 production, a comprehensive and timely review is needed to deepen the insight into this energy conversion process from material design strategies to dynamic catalytic mechanisms. In this review, the photocatalytic pathways for H 2 O 2 production and the modification strategies for promising photocatalysts are systematically discussed. Moreover, advanced synchrotron radiation X-ray absorption spectroscopy and its application to the energy conversion process of photocatalytic H 2 O 2 generation are carefully analyzed. Finally, the review outlines the challenges and future prospects associated with photocatalytic H 2 O 2 production, which aims to offer valuable insights and guidelines for the rational design of high-performance photocatalysts toward H 2 O 2 generation.