High-Density Ultra-small Clusters and Single-Atom Fe Sites Embedded in Graphitic Carbon Nitride (g-C3N4) for Highly Efficient Catalytic Advanced Oxidation Processes
发表时间：2019-11-07
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- 论文类型：
- 期刊论文
- 第一作者：
- An, Sufeng
- 通讯作者：
- Li, KY; Guo, XW (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, PSU DUT Joint Ctr Energy Res, Sch Chem Engn, Dalian 116024, Peoples R China.
- 合写作者：
- Guo, Xinwen,Zhang, Guanghui,Wang, Tingwen,Zhan, Wenna,Li, Keyan,Song, Chunshan,Miller, Jeffrey T.,Miao, Shu,Wang, Junhu
- 发表时间：
- 2018-09-01
- 发表刊物：
- ACS NANO
- 收录刊物：
- PubMed、SCIE
- 文献类型：
- J
- 卷号：
- 12
- 期号：
- 9
- 页面范围：
- 9441-9450
- ISSN号：
- 1936-0851
- 关键字：
- ultra-small clusters; single atoms; FeNx/g-C3N4; high-density; AOPs
- 摘要：
- Ultra-small metal clusters have attracted great attention owing to their superior catalytic performance and extensive application in heterogeneous catalysis. However, the synthesis of high-density metal clusters is very challenging due to their facile aggregation. Herein, one-step pyrolysis was used to synthesize ultra-small clusters and single-atom Fe sites embedded in graphitic carbon nitride with high density (iron loading up to 18.2 wt %), evidenced by high-angle annular dark field-scanning transmission electron microscopy, X-ray absorption spectroscopy, X-ray photoelectron spectroscopy, and Fe-57 Mossbauer spectroscopy. The catalysts exhibit enhanced activity and stability in degrading various organic samples in advanced oxidation processes. The drastically increased metal site density and stability provide useful insights into the design and synthesis of cluster catalysts for practical application in catalytic oxidation reactions.
- 是否译文：
- 否
