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Shi Y, Zhao C, Chen X, Chen C, Zhou X, Chen J. DFT study on the electronic structure and optical properties of an Au-deposited α-Fe 2O 3 (001) surface. RSC Adv 2022; 12:5447-5457. [PMID: 35425558 PMCID: PMC8981397 DOI: 10.1039/d1ra07933f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 02/01/2022] [Indexed: 11/21/2022] Open
Abstract
The electronic structure and optical properties of gold clusters deposited on an α-Fe2O3 surface were studied by using density functional theory (DFT), with a special emphasis on the influence of Au cluster sizes. There is a strong interaction between Au clusters and the α-Fe2O3 surface, and the binding energy increases with an increase of Au cluster size. The Au atoms of the gold cluster are bonded to the iron atoms of the α-Fe2O3 surface for the Au/α-Fe2O3 system, and the electrons transfer from the Au cluster to the α-Fe2O3 surface with the largest number of electrons transferred for 4Au/α-Fe2O3. The peaks of the refractive index, extinction coefficient and dielectric function induced by Au clusters appear in the visible range, which results in the enhanced optical absorption for the Au/α-Fe2O3 system. The optical absorption intensifies with increasing Au cluster size in the visible range, showing a maximum value for 4Au/α-Fe2O3. Further increasing the Au cluster size above 4Au results in a decrease in absorption intensity. The results are in good agreement with those of the refractive index, extinction coefficient and dielectric function.
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Affiliation(s)
- Yong Shi
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Cuihua Zhao
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
- Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Guangxi University Nanning 530004 China
| | - Xing Chen
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Cuiting Chen
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Xi Zhou
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
| | - Jianhua Chen
- School of Resources, Environment and Materials, Guangxi University Nanning 530004 China
- Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Guangxi University Nanning 530004 China
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Godneva MM, Belyaevskii AT. Phase formation in the systems TiOCl2-H3PO4-MF(HF)-H2O (M = K, Rb, Cs). RUSS J INORG CHEM+ 2013. [DOI: 10.1134/s0036023613120115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zhang R, Dai H, Du Y, Zhang L, Deng J, Xia Y, Zhao Z, Meng X, Liu Y. P123-PMMA Dual-Templating Generation and Unique Physicochemical Properties of Three-Dimensionally Ordered Macroporous Iron Oxides with Nanovoids in the Crystalline Walls. Inorg Chem 2011; 50:2534-44. [DOI: 10.1021/ic1023604] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ruzhen Zhang
- Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, and ‡Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Hongxing Dai
- Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, and ‡Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Yucheng Du
- Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, and ‡Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Lei Zhang
- Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, and ‡Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Jiguang Deng
- Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, and ‡Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Yunsheng Xia
- Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, and ‡Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Zhenxuan Zhao
- Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, and ‡Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Xue Meng
- Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, and ‡Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Yuxi Liu
- Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, and ‡Key Lab of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
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Bai S, Zhao J, Du G, Zheng J, Zhu Z. In situ modifying of carbon tube-in-tube nanostructures with highly active Fe(2)O(3) nanoparticles. NANOTECHNOLOGY 2008; 19:205605. [PMID: 21825743 DOI: 10.1088/0957-4484/19/20/205605] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A novel in situ method based on a liquid membrane templated self-assembly process is employed to modify carbon tube-in-tube nanostructures (TTCNTs) with Fe(2)O(3) nanoparticles. The as-obtained Fe(2)O(3) modified TTCNTs (Fe(2)O(3)/TTCNTs) nanocomposites are well constructed and the Fe(2)O(3) nanoparticles are well dispersed and decorated on the outer, inner and intramolecular surfaces of TTCNTs. In addition, the Fe(2)O(3)/TTCNTs nanocomposites are employed as catalysts for selective catalytic reduction (SCR) of NO with NH(3) and show high SCR catalytic activity, indicating that the novel multiple intramolecular channels and unique surface chemistry of the TTCNTs should play an important role in improving the properties of TTCNTs.
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Affiliation(s)
- Shuli Bai
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taoyuan South Road 27, Taiyuan 030001, Shanxi, People's Republic of China. Graduate School of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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