| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 봄 (04/22 ~ 04/24, 제주 ICC) |
| 권호 |
21권 1호, p.945 |
| 발표분야 |
재료 |
| 제목 |
Greener Method to Control Shape and Phase of Iron Pyrite (FeS2) |
| 초록 |
Pyrite iron disulfide (FeS2) is a very green and promising material for photovoltaic applications because of its earth abundance, and non – toxicity. A greener method was applied to synthesize pyrite with phase purity and high quality nanocrystals (NCs) by using non-toxic solvent as trioctylamine (TOA) together with octadodecylamine (ODA) and oleylamine (OLA). It was observed when increasing the ratios of ODA/TOA, the phase of iron sulfide transformed from makinawite (FeS) through gregite (Fe3S4) to pyrite (FeS2). So, Fe3S4 was considered as intermediate phase in the formation of FeS2 phase in the reaction between FeS phase and excess sulfur. The small cubic and nano-denrite iron pyrite NCs with the size of 50 nm and 20 nm, respectively, were successfully controlled by using different solvents to dissolve sulfur element. A mechanism involving the concentration of sulfur source and the aggregation are proposed to explain the shape change observed. |
| 저자 |
트린탄기에우1, 트롱윈탐윈1, 팜하우탄비엣1, 김창득2, 박진호1
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| 소속 |
1영남대, 2경북대 |
| 키워드 |
Iron pyrite; greener method; pure phase; non - toxic material; trioctylamine
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| E-Mail |
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| 원문파일 |
초록 보기 |
