Enhancement of photocatalytic hydrogen evolution activity of g-C3N4induced by structural distortion via post-fluorination treatment
文献类型：期刊论文
| 作者 | Zeng, Lei1,2; Ding, Xue1; Sun, Zongzhao1; Hua, Weiming2; Song, Wulin3,4; Liu, Shuangyi1,5 ; Huang, Limin1
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| 刊名 | Applied Catalysis B: Environmental
 |
| 出版日期 | 2018 |
| 卷号 | 227页码:276-284 |
| ISSN号 | 09263373 |
| DOI | 10.1016/j.apcatb.2018.01.040 |
| 英文摘要 | Graphic carbon nitride (g-C3N4) has recently attracted a great deal of attention for its application in solar energy conversion. The photocatalytic activities, however, suffer from fast electron-hole recombination and insufficient solar absorption of g-C3N4. Here, a modified g-C3N4(CNF) photocatalyst, which was prepared by a simple hydrothermal treatment with dilute hydrofluoric acid (0.1 M HF), has achieved a 2.4-fold enhanced photocatalytic activity for hydrogen production under visible light irradiation compared to pristine g-C3N4. It is demonstrated that a structural distortion is introduced in the CNF sheets without the formation of C–F bonds after the hydrothermal treatment, which can effectively separate photogenerated electron-hole pairs. Interestingly, the g-C3N4treated by oil bath reflux reaction with dilute hydrofluoric acid (CNFO) under the same reaction condition (concentration, temperature and duration) has no sign of structural distortion, and shows a decline in the photocatalytic H2evolution activity. This may be attributed to the enhanced localization mobility of π electrons induced by the formation of C–F bonds after the oil bath treatment. These findings provide a better understanding on the effect of different fluorination treatments on the surface states and photocatalytic activities of g-C3N4-based materials. Additionally, this work presents a promising strategy to improve the photocatalytic H2evolution activity of g-C3N4or related polymer semiconductors via microstructure engineering. © 2018 Elsevier B.V. |
| 语种 | 英语 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/8005]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 作者单位 | 1.Department of Chemistry, Southern University of Science and Technology of China, Shenzhen, China; 2.Department of Chemistry, Fudan University, Shanghai, China; 3.State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, China; 4.Analysis and testing center, Huazhong University of Science and Technology, Wuhan, China; 5.Chongqing Institute of Green & Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China |
| 推荐引用方式 GB/T 7714 | Zeng, Lei,Ding, Xue,Sun, Zongzhao,et al. Enhancement of photocatalytic hydrogen evolution activity of g-C3N4induced by structural distortion via post-fluorination treatment[J]. Applied Catalysis B: Environmental,2018,227:276-284. |
| APA | Zeng, Lei.,Ding, Xue.,Sun, Zongzhao.,Hua, Weiming.,Song, Wulin.,...&Huang, Limin.(2018).Enhancement of photocatalytic hydrogen evolution activity of g-C3N4induced by structural distortion via post-fluorination treatment.Applied Catalysis B: Environmental,227,276-284. |
| MLA | Zeng, Lei,et al."Enhancement of photocatalytic hydrogen evolution activity of g-C3N4induced by structural distortion via post-fluorination treatment".Applied Catalysis B: Environmental 227(2018):276-284. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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