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One-step synthesis of ZnO and Ag/ZnO heterostructures and their photocatalytic activity.
- Source :
-
Ceramics International . Apr2018, Vol. 44 Issue 6, p6176-6180. 5p. - Publication Year :
- 2018
-
Abstract
- By following a one-step, novel methodology, ZnO and Ag/ZnO heterostructures were successfully synthesized at room-temperature. This route is simple, effective, high yield (91%), environmentally friendly (green synthesis) and consists of a mechanically assisted metathesis reaction. The metathesis reaction used in this investigation showed two results: the in-situ generation of alkaline nitrates, LiNO 3 /NaNO 3 , and the direct crystallization of the desired Zn-based compounds in milling media; revealing a true mechanochemical synthesis of ZnO and Ag/ZnO (1.25, 2.50 and 4.50 mol% of Ag) heterostructures. Particles showed spherical-like morphologies and sizes smaller than 20 nm. The Ag/ZnO heterostructures exhibited higher photocatalytic activity than ZnO for degrading methylene blue (MB) dye. It was also shown that the presence of Ag (up to 1.25 mol%) nanoparticles (NPs) in ZnO accelerates the photodegradation reaction and then slows down with further increases in Ag contents. The 1.25-Ag/ZnO sample (10 mg) showed the highest photocatalytic activity (96%) for degrading MB (100 ml, 10 mg L −1 ) within 100 min under UV–Vis light irradiation (λ = 310 nm). [ABSTRACT FROM AUTHOR]
- Subjects :
- *ZINC oxide synthesis
*HETEROSTRUCTURES
*PHOTOCATALYSIS
Subjects
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 44
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 127985609
- Full Text :
- https://doi.org/10.1016/j.ceramint.2018.01.001