期刊
MATERIALS LETTERS
卷 97, 期 -, 页码 64-66出版社
ELSEVIER
DOI: 10.1016/j.matlet.2013.01.047
关键词
Nanocompasite; Phase transformation; Electrospun; TiO2 nanofibers; Metal dopin1
资金
- Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Korea Government Ministry of Knowledge Economy [201140100090]
- Technology Innovation Program
- The Ministry of Knowledge Economy
Metal (Co2+, Ni2+, Cu2+, and Zn2+) doped TiO2 nanofibers were fabricated by a sol-gel method and an electrospinning technique using poly(methyl methacrylate) (PMMA) and titanium isopropoxide as precursors. Co, Ni, and Zn were found to promote the anatase-rutile (A-R) phase transformation, whereas Zn inhibited this process. The as-prepared catalysts were evaluated in the photodecomposition of methylene blue under UV light. Ni- and Zn-doped TiO2 nanofibers were found to be more efficient than pure TiO2 nanofibers in this reaction. The photocatalytic degradation rate fitted a pseudo-first-order equation. Zn-doped TiO2 nanofibers were found to be promising materials for the photocatalytic decomposition of methylene blue with a kinetic constant of 0.0240 min(-1). (C) 2013 Elsevier B.V. All rights reserved.
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