전기선폭발법을 이용한 core/shell 구조 Ag/C 나노 입자의 제조 및 열처리조건에 따른 특성
Synthesis of Core/shell Structured Ag/C Nano Particles and Properties on Annealing Conditions
0
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
Multi shell graphite coated Ag nano particles with core/shell structure were successfully synthesized by pulsed wire evaporation (PWE) method. Ar and CH4 (10 vol.%) gases were mixed in chamber, which played a role of carrier gas and reaction gas, respectively. Graphite layers on the surface of silver nano particles were coated indiscretely. However, the graphite layers are detached, when the particles are heated up to 250oC in the air atmosphere. In contrast, the graphite coated layer was stable under Ar and N2 atmosphere, though the core/shell structured particles were heated up to 800oC. The presence of graphite coated layer prevent agglomeration of nanoparticles during heat treatment. The dispersion stability of the carbon coated Ag nanoparticles was higher than those of pure Ag nanoparticles.
Abstract
Multi shell graphite coated Ag nano particles with core/shell structure were successfully synthesized by pulsed wire evaporation (PWE) method. Ar and CH4 (10 vol.%) gases were mixed in chamber, which played a role of carrier gas and reaction gas, respectively. Graphite layers on the surface of silver nano particles were coated indiscretely. However, the graphite layers are detached, when the particles are heated up to 250oC in the air atmosphere. In contrast, the graphite coated layer was stable under Ar and N2 atmosphere, though the core/shell structured particles were heated up to 800oC. The presence of graphite coated layer prevent agglomeration of nanoparticles during heat treatment. The dispersion stability of the carbon coated Ag nanoparticles was higher than those of pure Ag nanoparticles.
참고문헌 (16)
- Y. Liu, , Electrochemistry Communications, 9, pp.1918~ (2007)
- Chang Kyu Rhee, "Fabrication of Al Nano Powders by Pulsed Wire Evaporation (PWE) Method", Journal of Industrial and Engineering Chemistry, 9(1), pp.71~75 (2003), 한국공업화학회
- G. Giesen, , Chem. Eng. Sci, 59, pp.2201~ (2004)
- L. G. Guo, , Matter. Lett, 61, pp.3211~ (2007)
- Z. J. Liu, , Chem. Vap. Deposition, 7, pp.248~ (2001)
- X. F. Zhang, , Appl.Phys. Lett, 89, pp.53115~ (2006)
- B. S. Xu, , Carbon, 44, pp.2631~ (2006)
- X. L. Dong, , J.Appl. Phys, 15, pp.6701~ (1999)
- J. Jiao, , J. Appl. Phys, 83, pp.2442~ (1998)
- T. Hayashi, , Nature, 381, pp.772~ (1996)
- D. Babonneau, , J.Appl. Crystallogr, 33, pp.437~ (2000)
- S. Tomita, , J. Appl. Phys, 88, pp.5452~ (2000)
- J. S. Qiu, , Carbon, 44, pp.2565~ (2006)
- Z. H. Wang, , J.Alloys Compd, 361, pp.289~ (2003)
- G. Viera, , Vacuum, 52, pp.183~ (1999)
- 이희민, "전기선폭발법에 의해 카본 코팅된 Cu 나노분말의 제조 및 특성 연구", 한국분말야금학회지, 16(4), pp.243~248 (2009), 한국분말야금학회