globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.02.001
论文题名:
Bidentate carboxylate linked TiO2 with NH2-MIL-101(Fe) photocatalyst: a conjugation effect platform for high photocatalytic activity under visible light irradiation
作者: Ma Y.; Lu Y.; Hai G.; Dong W.; Li R.; Liu J.; Wang G.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期:8
起始页码: 658
结束页码: 669
语种: 英语
中文关键词: Bandgap ; Conjugation effect ; Electron transfer capability ; Metal-organic frameworks ; Photocatalysis
英文关键词: Aromatic compounds ; Carboxylation ; Degradation ; Density functional theory ; Electron transitions ; Energy gap ; Heterojunctions ; Irradiation ; Light ; Metal-Organic Frameworks ; Nanocomposites ; Nanospheres ; Organic polymers ; Organometallics ; Oxygen vacancies ; Photocatalysis ; Photocatalytic activity ; Titanium dioxide ; Bidentate carboxylates ; Carbon nanosphere ; Conjugation effects ; Electron transfer ; High photocatalytic activities ; Hollow nanospheres ; Metalorganic frameworks (MOFs) ; Visible-light irradiation ; Iron compounds
英文摘要: Interfacial conjugation was employed to engineering preparation of TiO2@NH2-MIL-101(Fe) heterojunction photocataysts through carboxylate bidentate linkage with TiO2 and NH2-MIL-101(Fe), which can enhance the electron transfer capability from metal-organic frameworks (MOFs) to TiO2 and photocatalytic activity. The carbon nanospheres derived from glucose act as reducing agent and template to synthesize oxygen vacancies TiO2 hollow nanospheres. Then, the oxygen vacancies were employed as antennas to connect 2-aminoterephtalic acid as bidentate carboxylate chelating linkage on TiO2, which have been proved by the density functional theory (DFT) calculations. Subsequently, NH2-MIL-101(Fe) was coordinatingly formed on the surface of TiO2. The conjugation effects between TiO2 and NH2-MIL-101(Fe) enhanced the electron transfer capability and could also induce the band tail states to narrow bandgap of the composites. Thus, the photodegradability of methylene blue was remarkably enhanced under visible light irradiation. The degradation rate of TiO2@17%NH2-MIL-101(Fe) was 0.131 min−1, which was about 3.5 and 65 times higher than that of NH2-MIL-101(Fe) and TiO2, respectively. © 2020 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170002
Appears in Collections:气候变化与战略

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作者单位: Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, CA 90095, United States; Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Chemical Engineering, Inner Mongolia University for Nationalities, Tongliao, 028000, China

Recommended Citation:
Ma Y.,Lu Y.,Hai G.,et al. Bidentate carboxylate linked TiO2 with NH2-MIL-101(Fe) photocatalyst: a conjugation effect platform for high photocatalytic activity under visible light irradiation[J]. Science Bulletin,2020-01-01,65(8)
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