Morphologically Tuned Aluminum Hydrous Oxides and Their Calcined Products
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
Morphologically Tuned Aluminum Hydrous Oxides and Their Calcined Products
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| Creator |
Ghosh, Sourav
Das, Rituparna Naskar, Milan Kanti |
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| Subject |
Engineering Materials
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| Description |
Aluminum hydrous oxides and their derivatives were prepared by a facile solvothermal process in the presence of formamide, dimethyl formamide, and diethyl formamide as solvents at 150 degrees C/ 24 h. The as-synthesized products were calcined at 500 degrees C/ 1 h to obtain gamma-Al2O3. The crystallization behavior and microstructure of the pre-and postcalcination products were studied by X-ray diffraction and transmission electron microscopy, respectively. The surface textural properties of the calcined samples were investigated by N-2 adsorption-desorption analysis. The formamide and its derivatives played a significant role in tuning textural properties of the calcined products. The diethyl formamide based sample exhibited enhanced Brunauer-Emmett-Teller surface area and pore volume of 517 m(2) g(-1) and 2 cm(3) g(-1), respectively. Both the as-prepared and calcined samples showed variable morphologies and crystallinity using different solvents. The trend in morphological changes as nanosheet -> nanorod -> nanowire bundles occurred in the presence of formamide, dimethylformamide, and diethylformamide, respectively. A tentative mechanism has been illustrated for the formation of the products.
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| Publisher |
Wiely / American Ceramic Society
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| Date |
2016-07
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cgcri.csircentral.net/3813/1/rituparna.pdf
Ghosh, Sourav and Das, Rituparna and Naskar, Milan Kanti (2016) Morphologically Tuned Aluminum Hydrous Oxides and Their Calcined Products. Journal of the American Ceramic Society, 99 (7). pp. 2273-2282. ISSN 0002-7820 |
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| Relation |
http://cgcri.csircentral.net/3813/
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