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<p>Solar-driven conversion CO<sub>2</sub> and H<sub>2</sub>O into valuable C<sub>2</sub>H<sub>4</sub> and H<sub>2</sub>O<sub>2</sub> chemicals holds immense potential for mitigating CO<sub>2</sub> levels and maximize the economic feasibility. Nevertheless, based on the accessible *OH overoxidation and recombination process of *H-*OH in gas-solid reaction system, the concept that efficient synthesis of C<sub>2</sub>H<sub>4</sub> and H<sub>2</sub>O<sub>2</sub> has not been simultaneously realized in photoconversion of low-cost CO<sub>2</sub> and H<sub>2</sub>O. To substantiate the importance of limiting *OH overoxidation as well as mitigating *H-*OH recombination, we have developed a spatially confined Cu/AgBr/TiO<sub>2</sub> ternary hybrid architecture. This precise spatial confinement structure not only proves the influence of restrained *OH overoxidation and *H-*OH recombination on Cu sites for selective hydrocarbon production, but also highlights the role of *OH in promoting *CO coupling during CO<sub>2</sub> photoreduction and provide the high-concentration *OH coverage for H<sub>2</sub>O<sub>2</sub> production in gas-solid phase reaction. Here, the findings contribute to reveal the selectively catalytic mechanisms by associating with specific insights of H<sub>2</sub>O evolution behavior for efficient and selective CO<sub>2</sub> conversion to C<sub>2</sub>H<sub>4</sub> and H<sub>2</sub>O<sub>2</sub>.</p>

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Solar-driven co-production of C2H4 and H2O2 from CO2 and H2O

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年2月23日

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  • Zhongkai Xie,
  • Hongyun Luo,
  • Shanhe Gong,
  • Mengyang Xu,
  • Shengjie Xu,
  • Ting Zhou,
  • Ye Bai,
  • Baodong Mao,
  • Longhua Li,
  • Weidong Shi

摘要

Solar-driven conversion CO2 and H2O into valuable C2H4 and H2O2 chemicals holds immense potential for mitigating CO2 levels and maximize the economic feasibility. Nevertheless, based on the accessible *OH overoxidation and recombination process of *H-*OH in gas-solid reaction system, the concept that efficient synthesis of C2H4 and H2O2 has not been simultaneously realized in photoconversion of low-cost CO2 and H2O. To substantiate the importance of limiting *OH overoxidation as well as mitigating *H-*OH recombination, we have developed a spatially confined Cu/AgBr/TiO2 ternary hybrid architecture. This precise spatial confinement structure not only proves the influence of restrained *OH overoxidation and *H-*OH recombination on Cu sites for selective hydrocarbon production, but also highlights the role of *OH in promoting *CO coupling during CO2 photoreduction and provide the high-concentration *OH coverage for H2O2 production in gas-solid phase reaction. Here, the findings contribute to reveal the selectively catalytic mechanisms by associating with specific insights of H2O evolution behavior for efficient and selective CO2 conversion to C2H4 and H2O2.