Journal
DALTON TRANSACTIONS
Volume 40, Issue 25, Pages 6745-6750Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0dt01794a
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Funding
- National Science Foundation of China [91022032, 31070730, 20871001, 50973001]
- Anhui Provincial Education Department [ZD2007004-1]
- Science Foundation for Excellent Youth Scholars of Higher Education of Anhui Province [2011SQRL016ZD, 2009SQRZ023]
- 211 Project of Anhui University [2009QN012A]
- Functional Material of Inorganic Chemistry of Anhui Province
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A novel and facile protocol for the rapid synthesis of flower-like Cu2O architectures is reported in the presence of ionic liquid 1-n-butyl-3-methyl imidazolium tetrafluoroborate ([BMIM]BF4) with the assistance of microwave irradiation. The hierarchical structures are assembled from many thin nanosheets with tunable sizes by adjusting the amount of [BMIM]BF4 in the reaction solution. Noticeably, the flower-like Cu2O architectures present a high surface area of 65.77 cm(2) g(-1) with a band gap of about 2.25 eV, and exhibit high and stable photochemical activity for the reduction of Cr(VI) to Cr(III) under visible light irradiation. A reasonable model of an absorption and diffusion-limited aggregation process is proposed for explaining the possible formation mechanism of the flower-like Cu2O. The approach described in this study provides a feasible and rapid method to synthesize flower-like Cu2O with a hierarchical structure that is ready for application in the fields of photocatalytic hazard pollutants.
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