| 학회 |
한국화학공학회 |
| 학술대회 |
2016년 가을 (10/19 ~ 10/21, 대전컨벤션센터) |
| 권호 |
22권 2호, p.2394 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
The Effects of the Size of Graphene Sheets as Support Material on Electrocatalytic Reactions |
| 초록 |
Pt-deposited graphene catalysts are prepared over the reduced graphene oxide (RGO) sheets with different sizes. The size-selected graphene oxide (GO) sheets used as support material are synthesized by the modified Hummers method and subsequent pH-induced size fractionation procedure. Two prepared catalysts of Pt nanoparticles on the smaller RGO sheets (Pt/S-RGO) and larger RGO sheets (Pt/L-RGO) are applied for electrocatalytic reactions of methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR) in acidic media. The Pt/S-RGO presented the higher MOR and ORR activities than the Pt/L-RGO, indicating that the performances of the catalysts could be influenced by the sheet size of graphene. Superior electrocatalytic performances of Pt/S-RGO might be attributed to the synergetic effects of the improved accessibility of reactants and dispersion of Pt nanoparticles caused by the small sized RGO sheets with higher surface area. |
| 저자 |
노유성1, 김윤곤2, 김영민3, 한현수2, 이창민2, 김원배1
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| 소속 |
1포항공과대, 2광주과학기술원, 3한국화학(연) |
| 키워드 |
기타 촉매분야 |
| E-Mail |
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| 원문파일 |
초록 보기 |
