Emulsion based solvothermal synthesis of CuO grainy rod via the formation of quasi-quadrangular prism shaped Cu-2(OH)(3)Br for recyclable catalyst of 4-nitrophenol reduction
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
Emulsion based solvothermal synthesis of CuO grainy rod via the formation of quasi-quadrangular prism shaped Cu-2(OH)(3)Br for recyclable catalyst of 4-nitrophenol reduction
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| Creator |
Ghosh, Sourav
Das, Rituparna Kundu, Sukanya Naskar, Milan Kanti |
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| Subject |
Engineering Materials
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| Description |
Quasi-quadrangular prism shaped Cu-2(OH)(3)Br particles were synthesized by emulsion based solvothermal process followed by their transformation to hierarchical copper oxide grainy rods by calcination at 450 degrees C/2 h. In this process, we employed cetyltrimethyl ammonium bromide (CTAB) as cationic surfactant as well as bromide source, 1-butanol as co-surfactant, cyclohexane as organic (oil) medium, copper acetate as aquo-based copper precursor and hexamethylenetetramine ((CH2)(6)N-4) as the source of ammonia under hydrolyzing condition. The length/diameter of hierarchical CuO grainy rods was found to be around 2.5-10 mu m/0.5-1.5 mu m comprising of smaller grain (20-30 nm) assembly. The proposed reaction trajectory based on anion-exchange mechanism was proposed for the transformation of Cu-2(OH)(3)(CH3COO) to Cu-2(OH)(3)Br. The product showed excellent catalytic performance for 4-nitrophenol reduction. The apparent rate constant values increased from 0.532 min(-1) to 1.038 min(-1) with catalyst amount increased from 1 to 3 mg. This investigation refers the novel synthesis approach of CuO grainy-rod from quasi-quadrangular prism shaped Cu-2(OH)(3)Br precursor, and its role as catalyst for 4-nitrophenol reduction.
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| Publisher |
Pergamon-Elsevier
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| Date |
2020-12
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cgcri.csircentral.net/4842/1/sourav.pdf
Ghosh, Sourav and Das, Rituparna and Kundu, Sukanya and Naskar, Milan Kanti (2020) Emulsion based solvothermal synthesis of CuO grainy rod via the formation of quasi-quadrangular prism shaped Cu-2(OH)(3)Br for recyclable catalyst of 4-nitrophenol reduction. Journal of Physics and Chemistry of Solids, 147. Art No-109551. ISSN 0022-3697 |
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| Relation |
http://cgcri.csircentral.net/4842/
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