Preparation, Characterization, and Hydrogen Storage Capacity of MIL-53 Metal-Organic Frameworks
學年 101
學期 2
出版（發表）日期 2013-04-01
作品名稱 Preparation, Characterization, and Hydrogen Storage Capacity of MIL-53 Metal-Organic Frameworks
作品名稱（其他語言）
著者 Lin, Kuen-Song; Adhikari, Abhijit Krishna; Tu, Mu-Ting; Wang, Chieh-Hung; Chiang, Chao-Lung
單位
出版者
著錄名稱、卷期、頁數 Journal of Nanoscience and Nanotechnology 13(4),p. 2549-2556
摘要 Metal organic frameworks (MOFs) are considered as most promising candidate for hydrogen storage material for practical application. MIL-53(Cr) MOFs were synthesized from Cr(NO3)3·9H2O combined with terephthalic acid organic linker. MIL-53(Cr) MOFs are octahedral in shape and the particle size was around 10 μm identified by FE-SEM. The cleaning of the MOFs crystals with different solvents at different warm temperature were found effective and approved to increase the specific surface area and porosity of MIL-53(Cr) MOFs. The XRD patterns represented that MIL- 53(Cr) MOFs had well crystalline structures. Nitrogen adsorption isotherms show that Mil-53(Cr) has approximately type-I isotherm with a highest BET specific surface area of 1946 m2 g−1 after treated with hot methanol. Hydrogen adsorption study shows that this material can store 0.45 wt.% of H2 measured at 303 K and 32 bar. The pre-edge XANES spectra confirm the existence of Cr(III) in crystalline framework of MIL-53(Cr) and the sharp feature at 6007 eV in XANES spectra represents the dipole-allowed electron transition from 1s to 4p xy. In addition, EXAFS spectra indicate that MIL-53(Cr) metal organic frameworks structure has the Cr—O bond distance of 1.96 Å with a coordination number of 5.4.
關鍵字
語言 en_US
ISSN
期刊性質 國外
收錄於 SCI SSCI Scopus
產學合作
通訊作者 Kuen-Song Lin
審稿制度 是
國別 USA
公開徵稿
出版型式 ,電子版
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