the effects of oxidizers on the diameters of the carbon nanotubes ...

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Figure 5.24. The growths with CO2 (CO2(p)/CO2(g): 10/8) at 770 ºC: a), b) FeAlO14 CNT860, 5min. c), d) FeAlO14 CNT923, 10 min. ........... 71 Figure 5.25. The diameter distributions <strong>of</strong> CNTs at different pretreatment time <strong>of</strong> CO2 at 770 ºC: a) CO2(p)/CO2(g): 10/8, 5 min. b) CO2(p)/CO2(g): 10/8, 10 min. ................................................................ 72 Figure 5.26. The growths with CO2 (CO2(p)/CO2(g): 8/2) at 760 ºC: a), b) FeAlO15 CNT783, 5min. c), d) FeAlO15 CNT779, 10 min. ........... 73 Figure 5.27. The diameter distributions <strong>of</strong> CNTs at different pretreatment time <strong>of</strong> CO2 at 760 ºC: a) CO2(p)/CO2(g): 8/2, 5 min. b) CO2(p)/CO2(g): 10/8, 10 min. ................................................................ 74 Figure 5.28. The growths with CO2 (CO2(p)/CO2(g): 10/10) at 770 ºC: a), b) FeAlO16 CNT933, 5min. c), d) FeAlO16 CNT929, 10 min. ........... 75 Figure 5.29. The diameter distributions <strong>of</strong> CNTs at different pretreatment time <strong>of</strong> CO2 at 770 ºC: a) CO2(p)/CO2(g): 10/10, 5 min. b) CO2(p)/CO2(g): 10/10,10 min. .............................................................. 76 Figure 5.30. The growths with CO2 (CO2(p)/CO2(g): 10/10) at 760 °C: a), b) FeAlO17 CNT870, 5min. c), d) FeAlO17 CNT874, 10 min. ........... 77 Figure 5.31. The diameter distributions <strong>of</strong> CNTs at different pretreatment time <strong>of</strong> CO2 at 760 °C: a) CO2(p)/CO2(g): 10/10, 5 min. b) CO2(p)/CO2(g): 10/10, 10 min. ............................................................. 78 Figure 5.32. SEM micrographs taken by STEM detector <strong>of</strong> FeAlO12 CNT771 produced at 760 °C, CO2(p)/CO2(g):10/2, 5 min. a) 1 µm scale, b) 400 nm scale, c) 200 nm scale ....................................... 79 Figure 5.33. Raman spectra <strong>of</strong> CNTs grown at 760 °C: a) FeAlO14 CNT782, CO2(p)/CO2(g): 8/2, 5 min. b) FeAlO14 CNT857, CO2(p)/CO2(g): 10/8, 5 min. .................................. 83 Figure 5.34. Raman spectra <strong>of</strong> CNTs grown at 750 °C: a) FeAlO15 CNT840, CO2(p)/CO2(g): 10/2, 5 min. b) FeAlO15 CNT855, CO2(p)/CO2(g): 10/8, 5 min. .................................. 84 Figure 5.35. Raman spectra <strong>of</strong> CNTs grown at 760 °C: a) FeAlO16 CNT865, CO2(p)/CO2(g): 10/8, 10 min. b) FeAlO16 CNT873, CO2(p)/CO2(g): 10/10, 10 min. .............................. 85 xii
Figure 5.36. Raman spectra <strong>of</strong> CNTs grown at 750 °C: a) FeAlO17 CNT912, CO2(p)/CO2(g): 10/2, 10 min. b) FeAlO17 CNT922, CO2(p)/CO2(g): 10/8, 10 min. ................................ 86 Figure 5.37. The variation <strong>of</strong> CNT diameters as a function <strong>of</strong> ID/IG .............................. 87 Figure 5.38. The variation <strong>of</strong> mean diameters <strong>of</strong> CNTs used FeAlO12 substrate as a function <strong>of</strong> a) pretreatment time and growth temperature, b) CO2 amount and growth temperature .................................................... 88 Figure 5.39. The variation <strong>of</strong> mean diameters <strong>of</strong> CNTs used FeAlO14 substrate as a function <strong>of</strong> a) pretreatment time and growth temperature, b) CO2 amount and growth temperature .................................................... 89 Figure 5.40. The variation <strong>of</strong> mean diameters <strong>of</strong> CNTs used FeAlO15 substrate as a function <strong>of</strong> a) pretreatment time and growth temperature, b) CO2 amount and growth temperature .................................................... 90 Figure 5.41. The variation <strong>of</strong> mean diameters <strong>of</strong> CNTs used FeAlO16 substrate as a function <strong>of</strong> a) pretreatment time and growth temperature, b) CO2 amount and growth temperature ..................................................... 90 Figure 5.42. The variation <strong>of</strong> mean diameters <strong>of</strong> CNTs used FeAlO17 substrate as function <strong>of</strong> a) pretreatment time and growth temperature, b) CO2 amount and growth temperature .................................................... 91 Figure 5.43. a) Standard deviation b) Standard error as CNT sequence <strong>of</strong> <strong>the</strong> samples grown by utilizing CO2 .......................................................... 92 Figure 5.44. a) Kurtosis variations b) Skewness variations with CNT sequence <strong>of</strong> <strong>the</strong> samples grown by using CO2 ............................................................... 93 xiii
Page 1 and 2: THE EFFECTS OF OXIDIZERS ON THE DIA
Page 3 and 4: ACKNOWLEDGEMENTS During my master <
Page 5 and 6: ÖZET KİMYASAL BUHAR BİRİKTİRME
Page 7 and 8: TABLE OF CONTENTS LIST OF FIGURES .
Page 9 and 10: LIST OF FIGURES Figure Page Figure
Page 11: Figure 5.12. The growths with CO2 (
Page 15 and 16: Table 5.12. The amounts of<
Page 17 and 18: first two methods, arc discharge an
Page 19 and 20: Graphite is the mo
Page 21 and 22: preferred nanotube type because <st
Page 23 and 24: Figure 2.7. An illustration <strong
Page 25 and 26: Table 2.1. Advantages and disadvant
Page 27 and 28: 2.3.2. The Laser-Ablation Method Th
Page 29 and 30: hydrocarbons (Cui, et al. 2003) wit
Page 31 and 32: 2.3.3.1.2. Thin Film Support Layer
Page 33 and 34: 2.4. Growth Mechanism of</s
Page 35 and 36: (Amama, et al. 2009, Hata, et al. 2
Page 37 and 38: that the small amo
Page 39 and 40: Figure 4.1. The Magnetron Sputterin
Page 41 and 42: the tube as <stron
Page 43 and 44: Table 4.1 (cont.) FeAlO15CNT840 750
Page 45 and 46: their diameter rou
Page 47 and 48: The principle of R
Page 49 and 50: Figure 4.6. Schematic picture showi
Page 51 and 52: 5.1.1. AFM Results There exists a p
Page 53 and 54: a ) Figure 5.2. AFM micrographs <st
Page 55 and 56: c Figure 5.3. (cont.) Element Wt %
Page 57 and 58: Table 5.2. (cont.) FeAlO12CNT771 76
Page 59 and 60: a b c e Figure 5.4. The growths wit
Page 61 and 62: Figure 5.5. (cont.) Count 35 30 25
Page 63 and 64:
Due to the lack <s
Page 65 and 66:
a c e Figure 5.8. The growths with
Page 67 and 68:
Figure 5.9. (cont.) Count 45 40 35
Page 69 and 70:
Table 5.6 shows that the</s
Page 71 and 72:
a c e Figure 5.12. The growths with
Page 73 and 74:
Figure 5.13. (cont.) Count 45 40 35
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In this part, for the</stro
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For FeAlO15 substrate, two differen
Page 79 and 80:
For FeAlO16 substrate, two differen
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e f Figure 5.20. (cont.) Due to <st
Page 83 and 84:
5.2.1.3. CNT Formation at Different
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Count 30 25 20 15 10 5 0 a 5 10 15
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Count 35 30 25 20 15 10 5 0 a CNT 8
Page 89 and 90:
Count 40 35 30 25 20 15 10 5 0 a CN
Page 91 and 92:
Count 45 40 35 30 25 20 15 10 5 0 a
Page 93 and 94:
Count 30 25 20 15 10 5 0 a 5 10 15
Page 95 and 96:
for SWNTs, there i
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Table 5.17. (cont.) FeAlO15 CNT773
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Intensity (a.u.) 2700 1800 900 CNT8
Page 101 and 102:
Intensity (a.u.) 2100 1400 700 CNT9
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whole face. The formed catalyst par
Page 105 and 106:
Diameter Diameter 10 8 6 4 2 0 5 5
Page 107 and 108:
5.4. Statistical Analysis Results A
Page 109 and 110:
Kurtosis value is a descriptor <str
Page 111 and 112:
Very thin Fe films were grown on Si
Page 113 and 114:
REFERENCES Amama, P.B., C.L. Pint,
Page 115 and 116:
Hasegawa, K. and S. Noda. 2011a. Mi
Page 117 and 118:
Makita, Y., S. Suzuki, H. Kataura,
Page 119 and 120:
Vesselényi, I., K. Niesz, A. Siska
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