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低調(diào)而已金蟲 (小有名氣)
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[求助]
求助g-C3N4的XRD標(biāo)準(zhǔn)卡片
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| 如題,求助類石墨相C3N4的XRD標(biāo)準(zhǔn)卡片 |
g-C3N4 | g-C3N4 |
金蟲 (小有名氣)
木蟲 (著名寫手)
有木有蟲
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Card Information Names: beta-Carbon Nitride Formula: C3 N4 PDF Number: 50-1250 Quality: indexed Subfiles: inorganic alloy Cell and Symmetry Information System: hexagonal Space Group: P63/m (no. 176) a: 6.4262 c: 2.4590 Z: 2 Instrument Information Radiation: Wavelength: Instrument(d): diffractometer Instrument(I): visual estimate I type: unknown Comments and Additional Information Unit Cell: Reference reports: a=6.43, c=2.46. General: Cell parameters generated by least squares refinement. Preparation: Prepared by radio frequency sputtering of C target onto Si or Ge wafer at 400-600 C under H2 atmosphere. Analysis: Chemical analysis (at.%): C 60.0, N 30.0, O 10.0. d-Spacings: 1 Reflection (200) overlaps forbidden peak from substrate which appears because of strain. Literature References General: Yu, K.-M., Cohen, M., Haller, E., Hansen, W.,Liu, A., Wu, I. Phys. Rev. B: Condens. Matter 49 5034 (1994) PeakList h k l d I 1 0 0 5.5650 50 1 1 0 3.2130 50 2 0 0 2.7830 100 1 0 1 2.2590 100 2 1 0 2.1030 50 1 1 1 1.9530 50 3 0 0 1.8550 50 2 1 1 1.5980 5 3 1 0 1.5430 5 3 0 1 1.4810 5 2 2 1 1.3450 5 3 2 0 1.2770 5 0 0 2 1.2290 5 3 2 1 1.1330 50 2 0 2 1.1250 5 4 1 1 1.0890 5 |
木蟲 (著名寫手)
有木有蟲
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Card Information Names: Carbon Nitride Formula: C3 N4 PDF Number: 78-1747 Quality: calculated Subfiles: inorganic FIZ Cell and Symmetry Information System: rhombohedral Space Group: R3m (no. 160) a: 4.74413 c: 9.19285 Density (Dx): 2.559 Z: 3 Instrument Information Radiation: CuKa1 Wavelength: 1.54060 Instrument(d): calculated Cut Off: 17.7 Instrument(I): calculated I type: peak heights I/Icor: 2.11 Comments and Additional Information ICSD Number: 041952 TT No R value given. TT At least one TF missing. NT This entry was previously Zr3 Rh5, ICSD 062932 TI Stability of carbon nitride solids WY b2 a (R3MR) AF N3O4 Literature References General: Calculated from ICSD using POWD-12++ ( ) Structure: Liu, A.Y., Wentzcovitch, R.M. Phys. Rev. B: Solid State 50 10362 (1994) Peak Data PeakList h k l d I 1 0 1 3.7510 117 0 0 3 3.0643 999 0 1 2 3.0643 999 1 1 0 2.3721 15 1 0 4 2.0048 158 0 2 1 2.0048 158 1 1 3 1.8755 120 2 0 2 1.8755 120 0 1 5 1.6782 3 0 0 6 1.5321 79 0 2 4 1.5321 79 1 2 2 1.4712 3 2 0 5 1.3700 23 3 0 0 1.3700 23 1 1 6 1.2867 3 2 1 4 1.2867 3 1 0 7 1.2509 2 0 3 3 1.2509 2 1 2 5 1.1860 35 2 2 0 1.1860 35 1 3 1 1.1308 1 2 2 3 1.1061 54 0 2 7 1.1061 54 |
木蟲 (著名寫手)
有木有蟲
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以上兩個就是g-C3N4的標(biāo)準(zhǔn)卡片。 g-C3N4中的g是graphite或graphitic之意,想必你明白的,石墨的結(jié)構(gòu)就六方和三方兩種,你不知道么?你還想要哪種呢? 現(xiàn)在合成出的g-C3N4其化學(xué)組成基本上都不滿足C/N=3/4,就跟石墨化碳材料絕大部分不是純碳一個意思,也就是達(dá)不到完美的六方或三方石墨結(jié)構(gòu),否則就直接用β-C3N4了,何必遮遮掩掩地用g-C3N4呢? 不明白可以好好看看下面這幾篇文獻(xiàn): Chem.–Eur. J., 2007, 13, 4969–4980. J. Am. Chem. Soc., 2001, 123, 7788-7796. Diamond Relat. Mater., 1999, 8, 1175–1182. |
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