Single titanium-oxide species implanted in 2D g-C3N4 matrix as a highly efficient visible-light CO2 reduction photocatalyst
| Autor: | Xue-Peng Yin, Xiu-Li Lu, Guanyu Wang, Tong-Bu Lu, Shang-Feng Tang |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Graphitic carbon nitride 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Photochemistry 01 natural sciences Fluorescence Atomic and Molecular Physics and Optics 0104 chemical sciences law.invention Titanium oxide chemistry.chemical_compound chemistry law Photocatalysis General Materials Science Irradiation Electrical and Electronic Engineering 0210 nano-technology Spectroscopy Electron paramagnetic resonance Visible spectrum |
| Zdroj: | Nano Research. 12:457-462 |
| ISSN: | 1998-0000 1998-0124 |
| Popis: | A visible-light-response, efficient and robust photo-catalyst for CO2 reduction is highly desirable. Herein, we demonstrate that single titanium-oxide species implanted in two-dimensional (2D) graphitic carbon nitride (g-C3N4) matrix (2D TiO-CN) can efficiently photo-catalyze the reduction of CO2 to CO under the irradiation of visible light. The synergistic interaction between single titanium oxide species and g-C3N4 in 2D TiO-CN not only enhances the separation of photo-excited charges, but also results in visible light response of single titanium-oxide species, realizing high activity of CO2 photo-reduction with extremely high CO generation rate of 283.9 μmol·h−1·g−1, 5.7, 6.8 and 292.2 times larger than those of TiO2/CN hybrid material, CN and commercial TiO2, respectively. Time-resolved fluorescence and electron spin resonance spectroscopy revealed the catalytic mechanism of the fabricated 2D TiO-CN photocatalysts for CO2 reduction. |
| Databáze: | OpenAIRE |
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