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A simple chemical solution synthesis of nanowire-assembled hierarchical CuO microspheres with enhanced photochemical properties.
- Source :
-
Dalton Transactions: An International Journal of Inorganic Chemistry . 11/14/2018, Vol. 47 Issue 42, p15009-15016. 8p. - Publication Year :
- 2018
-
Abstract
- Hierarchical micro/nanostructures manifest attractive prospects for photocatalytic application. Nevertheless, large-scale hierarchical micro/nanostructures for industrial application with facile, low-cost and eco-friendly routes remain difficult. Herein, nanowire-assembled hierarchical CuO microspheres (HCMAW) are synthesized for the first time by CO32ā ions induced synthesis route. The time-dependent SEM images reveal that the growth mechanism for HCMAW is the well-known Ostwald ripening with self-assembly. The specific surface area of the HCMAW is 7.265 m2 gā1, which is higher than that of hierarchical CuO microspheres assembled with nanosheets (HCMAS) (4.952 m2 gā1) prepared by direct self-assembly scheme without the introduction of CO32ā ions. Meanwhile, the HCMAW possess strong light absorption around a broadband wavelength from 300 nm to 800 nm. As a result, the photodegradation activity test demonstrates that the HCMAW shows the degradation efficiency of 98.8% for rhodamine B (RhB) under white light irradiation for 30 min in the presence of H2O2 higher than those of HCMAS (66.3%) and commercial CuO (48.3%) under the same condition, which is one of the highest reported till date related to CuO nanomaterials for the degradation of RhB. The novel HCMAW synthesized by the ion-induced protocol is worth being generalized to more assembled hierarchical micro/nanostructures for versatile applications. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SYNTHESIS of nanowires
*COPPER oxide
*PHOTOCHEMISTRY
Subjects
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 47
- Issue :
- 42
- Database :
- Academic Search Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 132761985
- Full Text :
- https://doi.org/10.1039/c8dt02931h