MOF-5를 합성하고 X-ray 결정학으로 결정구조를 확인한다.
이 실험에서는 수소흡착과 다른 기체들의 분리/정제에 응용되는 Metal-organic frameworks (MOF)에 대해 공부하고 결정구조를 확인하는 법을 알게 된다.
MOF (metal-organic framework)
유기분자와 금속이온 사면체가 모여 만든 다공성의 분자구조로서. 유기
formula
KH₂PO₄
Melting point
96℃
Specific gravity
2.238g/ml
Solubility
26g/100gH₂O (25℃)
Molecular weight
136.09
PH
4.2~4.9 (25℃)
system ofcrystallization
tetragonal system
Table. 3. KDP(KH₂PO₄)
The growth of KDP and CuSO₄single crystals were carried out bythe temperature decrease method andthe constant temperature method. The
ofthe Sn and Ge doped ZnO films. High-purity N2 gas was fed at about 100 sccm into the tube furnace at one end, while the other end was connected to a rotary pump. The growth process was allowed to proceed for 1 h. A vacuum of 6 Torr was maintained inside the tube furnace during the deposition ofthe films. Thecrystalstructure and morphology ofthe products were investigated by X-ray diffracti
and intensified photodiode array detector (Princeton Instrument co., IRY1024, USA) at room temperature.
3. Results and Discussion
3.1 Structural Properties
Fig.1. presents cross-sectional FE-SEM images of all the samples. For all the samples, the columnar shaped ZnO grains grown normal to the substrate surface are clearly seen. When MZO and GZO films are deposited after ZnO films, it s
Thecrystalstructure is a member ofthe hexagonal crystal system and consists of tetrahedrally coordinated Zinc and Sulfur atoms that are stacked in an ABABAB pattern.
Thestructure is closely related to thestructure of lonsdaleite, or hexagonal diamond.
As there all orientations ofthecrystal, rings of different 2θ values are formed
A single crystal specimen in a Bragg-Brentano diffrac