Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 115, Issue 20, Pages 10180-10186Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp2020534
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Funding
- National Science Council of the Republic of China [NSC-97-2113-M-002-012-MY3]
- Grants-in-Aid for Scientific Research [22015002] Funding Source: KAKEN
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This investigation demonstrates the photocatalytic properties and activities of N-doped InTaO4 photocatalysts, which were prepared by impregnating Ni and the use of a modified Ni@NiO core-shell nanostructure-cocatalytic method for the reduction of CO2 to methanol. X-ray absorption spectroscopy (XAS) clearly indicates the oxygen vacancies and mechanism of a series of InTaO4-based photocatalysts. Nitrogen doping produces visible-light-responsive photocatalytic activity and further enhances absorbance. The cocatalytic method not only dramatically enhances absorbance, but also efficiently avoids electron-hole recombination that would otherwise be caused by electrons and holes separated from the crystal. The photocatalytic activity that was determined by the methanol yield demonstrates that N-doped samples give approximately twice the yield of undoped ones, whereas the cocatalytic method gives about triple the yield. A mechanism is aided in attempts to elucidate the correlation between structures and activities.
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