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Enhanced Visible Light Photocatalytic Activity of ZnO Nanowires Doped with Mn(2+) and Co(2+) Ions

In this research, ZnO nanowires doped with Mn(2+) and Co(2+) ions were synthesized through a facile and inexpensive hydrothermal approach, in which Mn(2+) and Co(2+) ions successfully substituted Zn(2+) in the ZnO crystal lattice without changing the morphology and crystalline structure of ZnO. The...

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Detalles Bibliográficos
Autores principales: Li, Wei, Wang, Guojing, Chen, Chienhua, Liao, Jiecui, Li, Zhengcao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5295210/
https://www.ncbi.nlm.nih.gov/pubmed/28336854
http://dx.doi.org/10.3390/nano7010020
Descripción
Sumario:In this research, ZnO nanowires doped with Mn(2+) and Co(2+) ions were synthesized through a facile and inexpensive hydrothermal approach, in which Mn(2+) and Co(2+) ions successfully substituted Zn(2+) in the ZnO crystal lattice without changing the morphology and crystalline structure of ZnO. The atomic percentages of Mn and Co were 6.29% and 1.68%, respectively, in the doped ZnO nanowires. The photocatalytic results showed that Mn-doped and Co-doped ZnO nanowires both exhibited higher photocatalytic activities than undoped ZnO nanowires. Among the doped ZnO nanowires, Co-doped ZnO, which owns a twice active visible-light photocatalytic performance compared to pure ZnO, is considered a more efficient photocatalyst material. The enhancement of its photocatalytic performance originates from the doped metal ions, which enhance the light absorption ability and inhibit the recombination of photo-generated electron-hole pairs as well. The effect of the doped ion types on the morphology, crystal lattice and other properties of ZnO was also investigated.