赵泽慧, 任广敏, 孟祥超. Ru助半导体光催化N2还原合成氨研究进展[J]. 燃料化学学报(中英文). DOI: 10.1016/S1872-5813(24)60468-8
引用本文: 赵泽慧, 任广敏, 孟祥超. Ru助半导体光催化N2还原合成氨研究进展[J]. 燃料化学学报(中英文). DOI: 10.1016/S1872-5813(24)60468-8
ZHAO Zehui, REN Guangmin, MENG Xiangchao. Recent advances of Ru-assisted semiconductor in photocatalytic N2 reduction to produce ammonia[J]. Journal of Fuel Chemistry and Technology. DOI: 10.1016/S1872-5813(24)60468-8
Citation: ZHAO Zehui, REN Guangmin, MENG Xiangchao. Recent advances of Ru-assisted semiconductor in photocatalytic N2 reduction to produce ammonia[J]. Journal of Fuel Chemistry and Technology. DOI: 10.1016/S1872-5813(24)60468-8

Ru助半导体光催化N2还原合成氨研究进展

Recent advances of Ru-assisted semiconductor in photocatalytic N2 reduction to produce ammonia

  • 摘要: 近年来,常温常压下光催化N2还原合成氨逐渐成为研究热点,表现出极高的发展潜力。但是低的光生电荷分离效率和缺乏有效的活性位点严重制约着半导体光催化剂N2还原合成氨的反应效率。因此,合理设计催化材料是强化光催化N2还原合成氨反应的关键。过渡金属钌(Ru)作为活性中心不仅可加快N2分子吸附和活化,而且对于N2还原具有良好的选择性。此外,金属与载体间相互作用能有效调节活性位点的电子结构,加快光生电子转移,显著提升光催化活性。基于此,本文系统性的研究了Ru助半导体实现高效光催化N2还原合成氨,并介绍了其基本原理。具体地说,介绍了Ru助半导体光催化材料体系,如TiO2基、g-C3N4基和金属氧化物材料等,包括催化剂的设计、晶体结构等特点。此外,还介绍了光催化N2还原合成氨材料的改性策略,包括负载/掺杂、缺陷工程、构建异质结、晶面调控。此外,还对Ru助半导体在这些过程中的应用进展和不足进行了总结和综合讨论,并提出了Ru助半导体在光催化N2还原合成氨应用中的未来展望。

     

    Abstract: In recent years, photocatalytic N2 reduction for ammonia synthesis at room temperature and atmospheric pressure has gradually become a research hotspot, exhibiting extremely high development potential. However, the low photogenerated charge separation efficiency and the lack of effective active sites seriously constrain the reaction efficiencies of semiconductor photocatalysts for N2 reduction of ammonia synthesis. Therefore, the rational design of catalytic materials is the key to enhance the photocatalytic N2 reduction reaction of ammonia synthesis. Transition metal Ru as the active center not only accelerates the adsorption and activation of N2 molecules, but also has good selectivity for N2 reduction. Moreover, the interaction between the metal and the support can effectively regulate the electronic structure of the active site, accelerate the photogenerated electron transfer, and significantly enhance the photocatalytic activity. Based on this, this review systematically investigates the Ru co-semiconductors to realize efficient photocatalytic N2 reduction for ammonia synthesis, and introduces its basic principles. Specifically, the Ru co-semiconductor photocatalytic material systems are introduced, such as TiO2-based, g-C3N4-based, and metal oxide materials, including the design of catalysts, crystal structures, and other characteristics. In addition, the modification strategies of photocatalytic N2 reduction ammonia synthesis materials are also presented, including loading/doping, defect engineering, construction of heterojunctions, and crystal surface modulation. Furthermore, the progress and shortcomings of the application of Ru co-semiconductors in these processes are summarized and comprehensively discussed, and the future outlook of Ru co-semiconductors in photocatalytic N2 reduction ammonia synthesis applications is proposed.

     

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