Journal
NANOMATERIALS
Volume 11, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/nano11061377
Keywords
TiO2; photocatalysis; nanobelts; chemical vapor deposition
Categories
Funding
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2020R1A4A4079397, 2021R1A2C1006241]
- Ministry of Education [2019R1A6A3A13095792]
- National Research Foundation of Korea [2021R1A2C1006241, 2020R1A4A4079397] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Efficient visible-light photocatalysis was achieved by synthesizing TiO2-delta nanobelts with abundant surface states and self-doping carbon atoms under judicious growth conditions, demonstrating the effective utilization of large surface area and high concentration of surface states in a wide range of photocatalysis applications.
Efficient visible-light photocatalysis was realized by exploring self-induced defect states, including the abundant surface states of TiO2-delta nanobelts synthesized through metal-organic chemical vapor deposition (MOCVD). The TiO2-delta nanobelts exhibited two strong defect-induced absorption peaks at 2.91 and 1.92 eV, overlapping with the conduction band states so that photoexcited carriers can contribute effectively for the photocatalysis reaction. To further enhance visible-light photocatalytic activity, carbon atoms, the by-product of the MOCVD reaction, were self-doped at the judiciously determined growth conditions. The resulting visible-light photocatalysis suggests that the large surface area and consequent high concentration of the surface states of the TiO2-delta nanobelts can be effectively utilized in a wide range of photocatalysis applications.
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