Journal
MATERIALS LETTERS
Volume 145, Issue -, Pages 189-192Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2015.01.075
Keywords
Semiconductors; CeO2 HRFNs; Fe-doped CeO2 HPNs; Nanocrystalline materials; Photocatalytic activity; MB dye
Funding
- Technology Innovation Program - Ministry of Trade, industry & Energy (MI, Korea) and Civil-Military Technology Cooperation Center [13-DU-EE-13, 10041957]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10041957] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Self-assembled CeO2 hierarchical rose flower-like nanostructures (HRFNs) and Fe-doped CeO2 hierarchically porous nanostructured (HPNs) thin films were synthesized by solvothermal method followed by thermal annealing process. Optical absorption for Fe-doped CeO2 HPNs showed an enhanced photo-absorption ability with an estimated band gap energy value of 2.63 eV. Photocatalytic degradation results showed that Fe-doped CeO2 HPNs exhibited an excellent photocatalytic activity in degrading Methylene Blue (MB) dye under UV-visible light irradiation compared with those of CeO2 HRFNs. The degradation rate of Fe-doped CeO2 HPNs was found to be 80% after 180 min and obeys pseudo-first-order equation. (C) 2015 Elsevier B.V. All rights reserved.
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