The photocatalytic generation of hydrogen peroxide (H₂O₂) through the utilization of only H₂O, O₂, and sunlight represents an energy-efficient and ecofriendly innovation in pursuit of a sustainable society. Despite significant efforts that have been directed toward the development of H₂O₂ generation via photocatalysis, the solar-to-chemical conversion (SCC) efficiency has not yet reached the levels required for large-scale practical applications. Consequently, there is an urgent demand to develop and design novel photocatalysts characterized by several key attributes: high catalytic activity, cost-effectiveness, and good stability. However, traditional inorganic photocatalysts, such as TiO₂, have exhibited limited activity, partly attributable to the potential decomposition of H₂O₂ caused by metal cations. Recent research has found organic photocatalysts as highly promising candidates to address these limitations. Organic materials offer several remarkable advantages for photocatalysis, including narrow bandgap, adjustable band edge potentials, the ability to control surface configurations for use as active sites, and the potential for rational design of structural units that promote efficient charge separation and transfer. In the field of photocatalytic H₂O₂ generation without sacrificial reagents, efficient organic photocatalysts have been widely studied, and various strategies to improve the activity and stability of organic photocatalysts have been explored. These strategies include the construction of donor–acceptor structures, the design of conjugated structures, the incorporation of heteroatoms, the enhancement of the internal electric field, and the substitution of functional groups. Currently, organic materials have exhibited exceptional activity, far exceeding that of well-established TiO₂.

中文翻译：

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有机光催化剂非牺牲 H2O2 生成及其环境修复原位应用的最新进展

仅利用 H ₂ O、O ₂和阳光来光催化生成过氧化氢 (H ₂ O ₂ )代表了追求可持续社会的节能和环保创新。尽管人们在通过光催化产生H ₂ O ₂方面做出了巨大的努力，但太阳能化学转化（SCC）效率尚未达到大规模实际应用所需的水平。因此，迫切需要开发和设计具有以下几个关键属性的新型光催化剂：高催化活性、成本效益和良好的稳定性。然而，传统的无机光催化剂，例如TiO ₂，​​表现出有限的活性，部分归因于金属阳离子引起的H ₂ O _{2的潜在分解。}最近的研究发现有机光催化剂是解决这些局限性的极有希望的候选者。有机材料为光催化提供了几个显着的优势，包括窄带隙、可调节的带边电位、控制用作活性位点的表面构型的能力，以及合理设计促进有效电荷分离和转移的结构单元的潜力。_{在无牺牲试剂的光催化H 2} O ₂生成领域，高效有机光催化剂得到了广泛的研究，并探索了各种提高有机光催化剂活性和稳定性的策略。这些策略包括供体-受体结构的构建、共轭结构的设计、杂原子的掺入、内部电场的增强以​​及官能团的取代。目前，有机材料已表现出优异的活性，远远超过成熟的TiO ₂。