| 周飞.石墨相氮化碳在光催化苯甲醛氧化耦合制氢领域的研究进展[J].分子催化,2023,37(4):397-404 |
| 石墨相氮化碳在光催化苯甲醛氧化耦合制氢领域的研究进展 |
| Research Progress of Graphitic Carbon Nitride for Photocatalytic Oxidation of Benzyl Alcohol Coupled with Hydrogen Production |
| 投稿时间：2023-01-31 修订日期：2023-05-19 |
| DOI：10.16084/j.issn1001-3555.2023.04.009 |
| 中文关键词: 石墨相氮化碳 苯甲醇选择性氧化 光催化制氢 苯甲醛 |
| 英文关键词:graphitic carbon nitride selective oxidation of benzyl alcohol photocatalytic hydrogen production benzaldehyde |
| 基金项目:湖北省高等学校省级教学研究项目(2020814) |
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| 中文摘要: |
| 石墨相氮化碳(g-C3N4)是一类非金属聚合物半导体材料, 具有良好的可见光响应、 优异的化学稳定性和可调节的能带结构, 在光催化分解水制氢、 空气净化、 环境修复等领域有着广阔的应用前景. 目前, g-C3N4光催化分解水的研究主要聚焦析氢半反应, 而牺牲试剂的氧化反应以及光生空穴则未被加以利用. 光催化苯甲醇氧化反应具有较高的选择性, 在光催化制氢的同时还能够获得苯甲醛. 我们结合最新国内外研究成果, 系统地综述了g-C3N4在光催化苯甲醇氧化耦合制氢方面的应用, 从分子改性、 显微结构及缺陷调控、 非金属元素掺杂、 金属负载和复合材料设计等5个方面介绍了g-C3N4光催化苯甲醇氧化提升性能的研究策略. 重点总结了g-C3N4的结构和光生载流子分离效率对催化性能的影响, 并对g-C3N4光催化苯甲醛氧化耦合制氢的后续发展进行了展望. |
| 英文摘要: |
| Graphitic carbon nitride (g-C3N4) is a metal-free polymeric semiconductor material. Because of the visible-light response, superior chemical stability and tunable band structure, g-C3N4 has shown a bright application prospect in the fields of photocatalytic water splitting for hydrogen production, air purification and environmental remediation. Currently, the studies on photocatalytic water splitting of g-C3N4 mainly focus on the hydrogen evolution reaction, while the oxidation of sacrificial agents and photogenerated holes are not highly utilized. With a relatively higher selectivity, photocatalytic oxidation of benzyl alcohol can achieve the production of hydrogen and benzaldehyde simultaneously. Combining the latest research progress, this paper comprehensively reviews the applications of g-C3N4 in photocatalytic oxidation of benzyl alcohol coupled with hydrogen production, and then introduces the strategies of activity enhancement from five aspects including molecular modifications, control of microstructure and defects, non-metallic elemental doping, loading of metals and design of composite materials. In addition, the effects of structure and separation efficiency of photogenerated carriers of g-C3N4 on the catalytic activity are summarized, and the future development of photocatalytic oxidation of benzyl alcohol coupled with hydrogen production using g-C3N4 is also forecasted. |
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