化工学报 ›› 2023, Vol. 74 ›› Issue (1): 29-44.DOI: 10.11949/0438-1157.20221120

• 综述与专论 • 上一篇    下一篇

光催化CO2还原制碳氢燃料系统优化策略研究

王峰(), 张顺鑫, 余方博, 刘亚, 郭烈锦()   

  1. 西安交通大学动力工程多相流国家重点实验室,陕西 西安 710049
  • 收稿日期:2022-08-08 修回日期:2022-11-04 出版日期:2023-01-05 发布日期:2023-03-20
  • 通讯作者: 郭烈锦
  • 作者简介:王峰(1990—),男,博士研究生,f_wang@xjtu.edu.cn
  • 基金资助:
    国家自然科学基金项目(51888103);陕西省油气田特种增产技术重点实验室开放基金项目(KFJJ-TZ-2020-2)

Optimization strategy for producing carbon based fuels by photocatalytic CO2 reduction

Feng WANG(), Shunxin ZHANG, Fangbo YU, Ya LIU, Liejin GUO()   

  1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
  • Received:2022-08-08 Revised:2022-11-04 Online:2023-01-05 Published:2023-03-20
  • Contact: Liejin GUO

摘要:

光催化CO2还原制碳氢燃料技术由太阳能直接驱动,将CO2转化为可直接利用的化学品,是助力碳达峰、碳中和的变革性技术。该技术的高效、低成本运行受光吸收利用、光催化剂形貌结构、界面催化反应及传质等因素影响,其内部能质传输是多时空尺度、多物理场耦合的复杂过程,需要从理论和应用两方面结合多个学科展开系统研究。梳理了光催化CO2还原基本理论及国内外研究进展,并针对技术瓶颈从光吸收拓展与利用、光生载流子分离强化、氧化/还原半反应优化及传质强化四个优化策略指出了该技术发展方向,探讨了该技术全流程能量传递和物质转化之间的耦合匹配准则,为降低反应能耗、促进性能及产率提升甚至未来工业化大规模太阳能驱动CO2还原应用铺垫道路。

关键词: 太阳能, 光催化, CO2还原, 碳氢燃料, 优化策略

Abstract:

The photocatalytic CO2 reduction to hydrocarbon fuel technology is directly driven by solar energy and converts CO2 into directly usable chemicals. It is a transformative technology to help carbon peak and carbon neutrality. The efficient and low-cost operation of this technology is determined by light absorption and utilization, the morphology and structure of photocatalysts, the interfacial catalytic reaction, and mass transfer etc. In general, the internal energy and mass transfer of this technology is a multi-scale spatio-temporal process and needs to be studied by using a multi-physics field coupling model from both theoretical and application aspects. In this paper, the fundamental theory and the state-of-the-art are summarized. Also, we present the development tendency of photocatalytic CO2 reduction technology from aspects of light absorption expansion and utilization, photogenerated carrier separation enhancement, oxidation/reduction half-reaction optimization, and mass transfer enhancement. Then we discuss the matching strategy between energy transfer and chemical reaction within the whole process, which provide the way for reducing the energy loss, promoting performance, and future industrial application of solar-driven CO2 reduction.

Key words: solar energy, photocatalytic, CO2 reduction, hydrocarbon fuel, optimization strategy

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