| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-에너지저장·변환 |
| 제목 |
g-CN Treated by Sulfuric Acid as a Precursor to Synthesize Efficient g-CN for Hydrogen Evolution from Water under Visible Light |
| 초록 |
The photocatalytic activity of graphitic carbon nitride (g-CN) is yet poor owing to wide bandgap and rapid recombination of photoexcited charge carriers. To mitigate these, we develop BCN-SA-CN using oxygen containing triazines as a precursor for thermal polycondensation. The precursor was prepared from bulk g-CN treated with high-concentrated sulfuric acid. It is demonstrated that the resulting BCN-SA-CN has increased carbon and oxygen contents. In addition, this g-CN shows decreased bandgap (2.59 eV) than BCN (2.84 eV). As a result, BCN-SA-CN exhibits photocatalytic hydrogen evolution reaction rate of 4.57 μmol/h under visible light (＞420 nm) by almost two times higher than that (2.37 μmol/h) of bulk g-CN due to the localization of photoexcited charge carriers by C, O co-doping. This study highlights sulfuric-acid treatment of g-CN can be an efficient way to prepare the higher monomeric precursor for g-CN with enhanced photocatalytic activity. |
| 저자 |
서혜원, 강희주, 이태규, Gazi A. K. M. Rafiqul Bari, 박재우, 황현진, 안병현, 문종석, 전영시
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| 소속 |
전남대 |
| 키워드 |
graphitic carbon nitride; sulfuric acid; C; O co-doping; hydrogen evolution; photocatalyst
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| E-Mail |
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