关于解决g-C3N4在光催化制氢领域的两个局限的研究进展
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昆明市科学技术局科技计划基金(2019-1-G-25318000003480);国家自然科学基金(21766016);云南省“万人计划”基金(YNWR-QNBJ-2018-198);云南省基础研究计划青年项目(202001AU070023);倪永浩院士工作站(2019IC002);昆明市科学技术局科技创新要素聚集计划重点项目(2019-1-A-24657)


Research progress on solving two limitations of g-C3N4 in photocatalytic hydrogen production
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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    随着工业的发展,化石燃料消耗巨大,环境问题也日益突出,寻找一种绿色新型能源已成为一个被广泛讨论的问题。氢气是一种清洁、可再生燃料,利用光催化剂分解水制氢气是一种制取氢气的有效途径。石墨碳氮化物(g-C3N4)作为光催化剂不仅成本低、反应稳定,而且其尺寸、厚度、结构、形貌等可控,在众多光催化剂中脱颖而出。但g-C3N4目前在光催化领域主要存在两个局限:g-C3N4不能有效地吸收光来产生足够多的光生电子-空穴对;g-C3N4不能有效的运输及分离光生电子-空穴对,以至于电子与空穴的复合率较高。文章综述了g-C3N4在光催化制氢领域的进展成果,分析了g-C3N4存在的问题并总结了其改进方法,最后对g-C3N4进行了展望,以期为设计高效、稳定的光催化制氢材料提供参考。

    Abstract:

    It is more and more important to find a novel green energy with the development of industry and consumption of fossil fuel. Hydrogen is a kind of clean and renewable fuel, and using photocatalyst to decompose water to produce hydrogen is an effective way to produce hydrogen. Graphite carbonitride photocatalyst (g-C3N4) as photocatalyst is low-cost and stable, also its size, thickness, structure and morphology is controllable. However, there are two main limitations of g-C3N4 in the field of photocatalysis: 1), the absorb light of g-C3N4 is limited by the wide band gap which caused the photoelectron-hole pairs is insufficient; 2), the recombination of electron and hole is high due to the transportation and separation of photoelectron-hole pair in g-C3N4 is limited. In this paper, the research progress of g-C3N4 in the field of photocatalytic hydrogen production is reviewed, the problem of g-C3N4 as photocatalyst is analyzed, also the improvement methods are summarized. Finally, the future development of g-C3N4 is prospected, the results can be used as a reference for the design and preparation of efficient and stable photocatalytic materials.

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王立志,陕邵云,支云飞,苏红莹,胡天丁,蒋丽红.关于解决g-C3N4在光催化制氢领域的两个局限的研究进展[J].精细化工,2021,38(11):

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  • 收稿日期:2021-04-21
  • 最后修改日期:2021-07-26
  • 录用日期:2021-07-27
  • 在线发布日期: 2021-10-08
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