Ghosh, Sourav and Naskar, Milan Kanti (2013) A rapid one-pot synthesis of hierarchical hollow mesoporous CuO microspheres and their catalytic efficiency for the decomposition of H2O2. RSC Advances, 3 (33). pp. 13728-13733. ISSN 2046-2069

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Hierarchical hollow mesoporous CuO microspheres were synthesized by a rapid one-pot hydrothermal method at 150 degrees C for 2 h, using aqueous based precursors like copper acetate, urea and water. The as-prepared (uncalcined) and calcined (300-500 degrees C) particles were characterized by differential thermal analysis (DTA), thermogravimetry (TG), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), multipoint BET (Brunauer-Emmett-Teller) surface area, field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). The catalytic efficiency of the synthesized microspheres was examined by tracking the decomposition of H2O2. The size of the hollow microspheres was 3-8 mu m comprised of small particles (100-300 nm) which were formed by the self-assembly of nanometer sized (5-20 nm) particles with a stone-wall-like structure. The formation mechanism of the hierarchical hollow CuO microspheres is discussed. The BET surface area and total pore volume of the 300 degrees C-treated sample were found to be 51 m(2) g(-1) and 0.25 cm(3) g(-1), respectively, and it exhibited the highest catalytic performance for the decomposition of H2O2 with a rate constant of 27.49 x 10(-3) min(-1), the highest value ever published. The catalytic activity was studied in terms of the textural properties and calcination temperatures of the microspheres. The hollow CuO microspheres were used as recyclable catalyst.

Item Type: Article
Subjects: Engineering Materials
Divisions: Sol Gel
Depositing User: Bidhan Chaudhuri
Date Deposited: 10 Sep 2013 08:46
Last Modified: 21 Nov 2014 08:09

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