| 학회 |
한국공업화학회 |
| 학술대회 |
2016년 봄 (05/02 ~ 05/04, 여수 엑스포 컨벤션) |
| 권호 |
20권 1호 |
| 발표분야 |
무기재료_포스터 |
| 제목 |
Large-scale synthesis and thermoelectric properties of Sb2Q3 (Q=S, Se) nanofibers |
| 초록 |
Sb2Q3 (Q = S, Se) compounds are promising for thermoelectric and photovoltaic applications. Though stabilizing them in a nanoscale has been widely studied, their synthesis in a large scale is still challenging. In this work, we report a new facile method to synthesize single crystalline Sb2Q3 nanowires in a large scale with band gap tunability. Sb2Q3 nanowires are solvothermally obtained by topotactic conversion from ternary metal chalcogenide compound of K2Sb8Q13. K2Sb8Q13 can be readily prepared by a torch-flame reaction giving tens of gram scale. Then, K2Sb8Q13, conceptually [K2Se][Sb2Q3]4, are topotactically converted to Sb2Q3 nanowires. This new process also enables facile synthesis of solid solution of Sb2S3-xSey nanowires with band gap tunability. The thickness of nanowires is controllable by reaction condition. Sb2Q3 nanowires exhibit enhanced thermoelectric properties compared to the bulk counterparts. |
| 저자 |
이형석1, 김명길2, 안경한3, 정인4
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| 소속 |
1School of Chemical and Biological Engineering, 2Seoul National Univ. / Center for Nanoparticle Research, 3Institute for Basic Science (IBS), 4Department of Chemistry |
| 키워드 |
Large-scale nanofiber synthesis; Solvothermal method; Topotactic conversion; K2Sb8Q13; Sb2Q3 Nanowires; Thermoelectric materials
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| E-Mail |
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