| 학회 |
한국화학공학회 |
| 학술대회 |
2021년 봄 (04/21 ~ 04/23, 부산 BEXCO) |
| 권호 |
27권 1호, p.1058 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
A study on the influence of chemical oxidation on Pt containing graphitic carbon nitride photocatalysts in Photocatalytic Hydrogen production |
| 초록 |
In this study, we prepared Pt-containing graphitic carbon nitride (g-C3N4) catalysts modified by a simple chemical oxidation of g-C3N4 and applied them for photocatalytic hydrogen evolution tests for the first time. The hydrogen production rates of the chemically oxidative Pt/g-C3N4 photocatalysts were at least five times as high as those of the bulk Pt/g-C3N4. The chemical oxidation of g-C3N4 introduced the oxygen-containing functional groups on the tri-s-triazine units, resulting in more negatively charged surface of g-C3N4. During the Pt photodeposition on the g-C3N4 surface, the chemically oxidative g-C3N4 with more negatively charged surface and the functional groups not only promoted the agglomeration of Pt nanoparticles on the g-C3N4 surface but also maintained the high ratio of Pt2+/Pt0 for the Pt nanoparticles, which enhanced the hydrogen evolution rate by suppressing the reversible reaction route of H2 to 2H+. In addition, the presence of the oxygen-containing functional groups on the chemically oxidative g-C3N4 increased the separation efficiency of photo-excited charges over Pt/g-C3N4. |
| 저자 |
Dao Duc Quang, 웬티킴안, 왕명연, 김상윤, 신은우
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| 소속 |
Univ. of Ulsan |
| 키워드 |
촉매 |
| E-Mail |
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| 원문파일 |
초록 보기 |
