跳到主要內容

臺灣博碩士論文加值系統

(44.222.189.51) 您好!臺灣時間:2024/05/24 18:27
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

: 
twitterline
研究生:李承遠
研究生(外文):Chen-Yuan Lee
論文名稱:以拉曼光譜研究石墨包裹金屬的奈米晶粒
論文名稱(外文):On graphite encapsulated metal nanoparticles:A Raman spectroscopic study
指導教授:鄭嘉良
指導教授(外文):Chia-Liang Cheng
學位類別:碩士
校院名稱:國立東華大學
系所名稱:應用物理研究所
學門:自然科學學門
學類:物理學類
論文種類:學術論文
畢業學年度:93
語文別:英文
論文頁數:74
中文關鍵詞:石墨包裹金屬的奈米晶粒拉曼光譜
外文關鍵詞:Raman spectroscopygraphitegraphite encapsulated metalnanoparticles
相關次數:
  • 被引用被引用:0
  • 點閱點閱:206
  • 評分評分:
  • 下載下載:25
  • 收藏至我的研究室書目清單書目收藏:3
Abstract
In this work, a detail research on the carbon-metal nanoparticles based on the knowledge of Raman spectroscopy and surface sciences was conducted. Graphite encapsulated metal (GEM) nanoparticles are composite materials with a very special core-and-shell spherical structure. They are 5~50 nm in diameter, a small number of GEM can reach 100 nm. The core is metal nanocrystals and the shell consists of several to over ten layers even more of graphitic sheets. Because the outer shell protects the inner metal nanoparticles, the materials are stable in environment, such as in strong acid, and in a high temperature oxygen-free condition.
In this study, Raman spectroscopy was used to investigate the structural information of the Fe-, Co-and Ni-GEM prepared using arc-discharge method. Raman spectra were obtained using 532 nm diode pumped solid state laser (DPSS) as excitation source. The Raman spectra of all samples exhibit typical graphitic D-and G-bands in the 1000-2000 cm-1 region even were different metal cores encapsulated. Characteristic transpolyacetylene chains in ~1150 cm-1 and ~1450 cm-1 in GEM carbon layers was also observed. Laser annealing/damage effects on the GEMs were discussed. Upon laser annealing/damage, the ID/IG (intensity D- and G-band) ratio changed were observed. Different GEMs prepared using different carbon source, post-production treatment with acid-washing and the influence CH4 in the preparation stage were also discussed.
Contents




Abstract I
Contents II
List of Tables III
List of Figures IV


Chapter 1 Introduction 1

Chapter 2 A general review
2.1 Carbon structures 4
2.2 Nano-scale materials
2.2.1 Graphite Encapsulated Metal (GEM) 6
2.2.2 Arc-discharge method 7
2.2.3 Two-step encapsulation model 8
2.3 Experimental setup
2.3.1 GEM preparation 10

2.3.2 Raman instrumentation…………………………………11

Chapter 3 GEM - Raman Spectroscopic Study
3.1 The Raman spectral measurements
3.1.1 The carbon source re-binding 17
3.1.2 Transpolyacetylene chains in GEM carbon layers 19
3.2 The influence of laser on the Raman measurements
3.2.1 Laser damage effect 21
3.2.2 Leaser annealing and the ID/IG ratio from Raman spectra.. ….22
3.2.3 Metal oxidization in ex-situ measurements 24
3.2.4 Graphitization, annealing and damage effects on GEMs...
25
3.3 Raman spectroscopic analysis of GEM prepared with different parameter of preparation
3.3.1 Different carbon sources for GEM production…………26
3.3.2 Acid washing…………………………………………...27
3.3.3 The influence of CH4 on the process …………………..28
3.4 TEM image study 29

Chapter 4 Summary 58

References 61
1. M. Tomita, Y. Saito and T. Hayashi, Jpn. J. Appl. Phy., 32 Part2, No.2B L280(1993)
2. S. Subramoney, R. S. Ruoff, D. C. Lorents and R. Malhotra, Nature, 366 (1993)
3. M. H. Teng, J. J. Host, J. H. Hwang, and B. R. Elliott, J. Mater. Res, 10, No.2 233 (1995)
4. V. P. Dravid, J. J. Host, M. H. Teng and B. R. Elliott, Nature, 374, No.13, 602 (1995)
5. C. -L. Cheng, C. -T. Chia, C.-C. Chiu, and I. -N. Lin, Diamond 11, 262 (2002)
6. C.-C. Chiu, Spectroscopic studies of hydrogen etching on diamond-like carbon films, 2000
7. Raymond Chang, “Essential Chemistry-A Core text for general chemistry”, second edition, 2000
8. Harold Kroto, Robert F. Curl, Jr. and Richard E. Smalley, Nature 318, 162 (1985)
9. W. Kratschmer, L.D. Lamb, K. Fostiropoulos and D.R. Huffman, Nature, 347. 354(1990)
10.B. R. Elliott, J. J. Host, V. P. Dravid, M. H. Teng, J. Mater. Res, 12, No.12 3323 (1997)
11. J. J. Host, V. P. Dravid, M. H. Teng, B. R. Elliott, J. Mater. Res, 12, No.12 1268 (1997)
12. Y. Saito, T. Yoshikaw, M. Okuda, N. Fujimoto, and S. Yamamuro,
Chem. Phys. Lett. 212, 379 (1993)
13. C. Guerret-Piecourt, L. Lebouar, A. Lolseau and H. Pascard, Nature, 372, 761 (1994)
14. S. Seraphin, D. Zhou and J. Jiao, J. Appl. Phys., 80, 2097 (1996)
15. J. Jiao and S. Seraphin, J. Appl. Phys., 83, No.5 2442 (1998)
16. J. H. Hwang, V. P. Dravid J. Mater. Res., 12, No.4 (1997)1076
18. D. S. Knight and W. B. White, J. Mater. Res. 4, 385 (1989)
19. J. wag, M. Ramsteiner, C. Wild, and P. Koidl, Phys. Rev. B 40, 1817 (1989)
20. M. A. Tamor, J. A. Haire, C. H. Wu, and K. C. Hass, Appl. Phys. Lett. 54, 123 (1989)
21. R. J. Nemanich and S. A. Solin, Phys. Rev. B 20, 392 (1979)
22. F. Tuinstra and J. L. Koening, J. Chem. Phys. 53, 1126 (1970)
23. P. Lespade, A. Marchard, M. Couzi, and F. Cruege, Carbon 22, 375(1984)
24. M. Yoshikawa, N. Magai, and M. Matsuki, Phys. Rev. B 46, 7169 (1992)
25. M. J. Matthews and M. A. Pimenta Phys. Rev. B 59, 6585 (1999)
26. G. S. Painte and D. E. Ellis, Phys. Rev. B 1, 4747 (1970)
27. R. F. Willis, B. Fitton, and G. S. Painter, Phys. Rev. B 9, 1920 (1974)
28. J. Schwan, S. Ulrich, V. Batori, and H. Ehrhardt, J. Appl. Phys 80,1 (1996)
29. A. C. Ferrari, and J. Robertson, Phys. Rev. B 61, 14095 (1999)
30. A. C. Ferrari, and J. Robertson, Phys. Rev. B 63, 121405 (2000)
31. F. Piazza , A.Golanski, Ss. Schulze, and G. Relihan, Appl. Phys. Lett. 82, 358 (2003)
32. A. J. Heeger, S. Kivelson, J. R. Schrieffer, and W. P. Su, Rev. Mod. Phys. 60 , 781 (1998)
33. F. Tuinstra and L. Koenig, J. Appl. Phys. 53, 1126 (1970)
34. M. Tamor, J. Haire, C. Wu, and K Hass, Appl. Phys. Lett. 54, 123 (1989)
35. M. Tamor, C. Wu, R. Carter , and N. Lindsay, Appl. Lett. 55, 1388 (1989)
36. Z. H. Wang, Z. D. Zhang, C. J. Choi, and B. K. Kim, J. Alloys and compounds. 361, 289 (2003)
37. W. Wang, Y. Liu, C. Xu, C. Zheng, and G. Wang, Chem. Phys. Lett. 362, 119 (2002)
38. S. Tomita, M. Hikita, M. Fujii, S. Hayashi, K. Akamatsu, S. Deki, and H. Yasuda, J. Appl. Phys. 88, 5452 (2000)
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top