| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 가을 (10/31 ~ 11/02, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
22권 2호 |
| 발표분야 |
무기재료_포스터 |
| 제목 |
Enhanced catalytic activity of edge exposed 1T-WS2/WO3 nanohelix for efficient water splitting |
| 초록 |
As a substitution of noble metal catalyst for hydrogen evolution reaction (HER), tungsten disulfide (WS2) is recognized as an emerging catalyst because of their active edge site. In addition, it is well known that the 1T phase, as one of the polymorph of TMDCs, can dramatically enhance the catalytic activity. Thus, many researches have tried to fabricate 1T phase WS2 with exposed edge site. Herein, we report for the first time a facile synthesis of 1T-WS2/WO3 nanohelix with exposed edge through the introduction of surface modified curved 3D scaffold. It was investigated that the oxygen deficient surface of WO3 has been affected to the growth behavior of WS2 during the sulfurization. As well as, curved 3D WO3 nanohelix were identified to be responsible for facilitating the formation of 1T phase. As a result, edge exposed 1T-WS2/WO3 nanohelix exhibits excellent high activity with 10 mA at 0.18 V (vs RHE). |
| 저자 |
이노호, 최일용, 도경연, 최시영, 이동화, 김종규
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| 소속 |
포항공과대 |
| 키워드 |
Water splitting; TMDC; 1T
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| E-Mail |
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