| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터) |
| 권호 |
27권 2호, p.1883 |
| 발표분야 |
에너지 환경 |
| 제목 |
Oxygen-Containing Triazines as a Precursor to Synthesize Graphitic Carbon Nitride for Efficient Visible Light-Driven Hydrogen Evolution from Water |
| 초록 |
The photocatalytic activity of graphitic carbon nitride (g-CN) is still not considered as practical owing to the large bandgap and fast recombination of photoexcited charge carriers. To mitigate these, we develop a functional g-CN using oxygen containing triazines as a precursor for structural functionalization. This precursor was prepared from bulk g-CN treated with high-concentrated sulfuric acid at high temperature. Resulting BCN-SA-CN has increased carbon, oxygen contents and decreased bandgap (2.59 eV) than pristine BCN (2.84 eV). As a result, BCN-SA-CN exhibits photocatalytic hydrogen evolution reaction rate of 4.57 μmol/h under the visible light (>420 nm) by almost two times higher than that (2.37 μmol/h) of BCN due to the charge localization effect by C, O co-doping. This study highlights sulfuric-acid treatment of g-CN can be an efficient way to prepare the g-CN with enhanced photocatalytic activity. |
| 저자 |
서혜원, 강희주, 이태규, 박재우, 황현진, 전영시
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| 소속 |
전남대 |
| 키워드 |
에너지; 환경
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| E-Mail |
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| 원문파일 |
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