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Enhanced visible-light photo-oxidation of nitric oxide using bismuth-coupled graphitic carbon nitride composite heterostructures
| Content Provider | Semantic Scholar |
|---|---|
| Author | Li, Yuhan Lv, Kangle Ho, Wingkei Zhao, Zaiwang Huang, Yu |
| Copyright Year | 2017 |
| Abstract | Abstract Pure bismuth (Bi) metal-modified graphitic carbon nitride (g-C3N4) composites (Bi-CN) with a pomegranate-like structure were prepared by an in situ method. The Bi-CN composites were used as photocatalysts for the oxidation of nitric oxide (NO) under visible-light irradiation. The inclusion of pure Bi metal in the g-C3N4 layers markedly improved the light absorption of the Bi-CN composites from the ultraviolet to the near-infrared region because of the typical surface plasmon resonance of Bi metal. The separation and transfer of photogenerated charge carriers were greatly accelerated by the presence of built-in Mott–Schottky effects at the interface between Bi metal and g-C3N4. As a result, the Bi-CN composite photocatalysts exhibited considerably enhanced efficiency in the photocatalytic removal of NO compared with that of Bi metal or g-C3N4 alone. The pomegranate-like structure of the Bi-CN composites and an explanation for their improved photocatalytic activity were proposed. This work not only provides a design for highly efficient g-C3N4-based photocatalysts through modification with Bi metal, but also offers new insights into the mechanistic understanding of g-C3N4-based photocatalysis. |
| Starting Page | 321 |
| Ending Page | 329 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/S1872-2067(16)62573-1 |
| Alternate Webpage(s) | http://repository.lib.ied.edu.hk/pubdata/ir/link/pub/22196.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/S1872-2067%2816%2962573-1 |
| Volume Number | 38 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
