Photocatalytic activity under visible light of Fe-doped CeO 2 nanoparticles synthesized by flame spray pyrolysis
CeO 2 nanoparticles (undoped and Fe-doped) were synthesised using flame spray pyrolysis with varying Fe-dopant concentrations. X-ray diffraction analysis revealed the absence of any impurity phases in all samples. BET (Brunauer, Emmett and Teller) tests showed that the average sizes of undoped and F...
Saved in:
Main Authors: | , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
2014
|
Online Access: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84867411514&partnerID=40&md5=68e7401ba4b83e992e6850a6ddb987e6 http://cmuir.cmu.ac.th/handle/6653943832/6919 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Chiang Mai University |
Language: | English |
id |
th-cmuir.6653943832-6919 |
---|---|
record_format |
dspace |
spelling |
th-cmuir.6653943832-69192014-08-30T03:51:23Z Photocatalytic activity under visible light of Fe-doped CeO 2 nanoparticles synthesized by flame spray pyrolysis Channei D. Inceesungvorn B. Wetchakun N. Phanichphant S. Nakaruk A. Koshy P. Sorrell C.C. CeO 2 nanoparticles (undoped and Fe-doped) were synthesised using flame spray pyrolysis with varying Fe-dopant concentrations. X-ray diffraction analysis revealed the absence of any impurity phases in all samples. BET (Brunauer, Emmett and Teller) tests showed that the average sizes of undoped and Fe-doped CeO 2 particles were 6.39 and 5.94 nm, respectively. Specific surface area of the particles increased with increasing Fe-dopant concentration. High resolution transmission electron microscopy (HRTEM) revealed that the nanoparticles were either spherical or equiaxed in shape. UV-vis spectroscopy showed a shift of the adsorption edge towards longer wavelengths along with a decrease in the optical indirect band gap from 3.18 to 2.90 eV for undoped particles and 2 mol% Fe-doped particles. In terms of photocatalytic performance, Fe-doped CeO 2 nanoparticles were responsible for an increased degradation of the carbon from formic and oxalic acids. Furthermore, the photocatalytic efficiency was ∼100% when 2 mol% Fe-doped CeO 2 particles were used for testing. © 2012. 2014-08-30T03:51:23Z 2014-08-30T03:51:23Z 2012 Article in Press 2728842 10.1016/j.ceramint.2012.09.093 CINND http://www.scopus.com/inward/record.url?eid=2-s2.0-84867411514&partnerID=40&md5=68e7401ba4b83e992e6850a6ddb987e6 http://cmuir.cmu.ac.th/handle/6653943832/6919 English |
institution |
Chiang Mai University |
building |
Chiang Mai University Library |
country |
Thailand |
collection |
CMU Intellectual Repository |
language |
English |
description |
CeO 2 nanoparticles (undoped and Fe-doped) were synthesised using flame spray pyrolysis with varying Fe-dopant concentrations. X-ray diffraction analysis revealed the absence of any impurity phases in all samples. BET (Brunauer, Emmett and Teller) tests showed that the average sizes of undoped and Fe-doped CeO 2 particles were 6.39 and 5.94 nm, respectively. Specific surface area of the particles increased with increasing Fe-dopant concentration. High resolution transmission electron microscopy (HRTEM) revealed that the nanoparticles were either spherical or equiaxed in shape. UV-vis spectroscopy showed a shift of the adsorption edge towards longer wavelengths along with a decrease in the optical indirect band gap from 3.18 to 2.90 eV for undoped particles and 2 mol% Fe-doped particles. In terms of photocatalytic performance, Fe-doped CeO 2 nanoparticles were responsible for an increased degradation of the carbon from formic and oxalic acids. Furthermore, the photocatalytic efficiency was ∼100% when 2 mol% Fe-doped CeO 2 particles were used for testing. © 2012. |
format |
Article |
author |
Channei D. Inceesungvorn B. Wetchakun N. Phanichphant S. Nakaruk A. Koshy P. Sorrell C.C. |
spellingShingle |
Channei D. Inceesungvorn B. Wetchakun N. Phanichphant S. Nakaruk A. Koshy P. Sorrell C.C. Photocatalytic activity under visible light of Fe-doped CeO 2 nanoparticles synthesized by flame spray pyrolysis |
author_facet |
Channei D. Inceesungvorn B. Wetchakun N. Phanichphant S. Nakaruk A. Koshy P. Sorrell C.C. |
author_sort |
Channei D. |
title |
Photocatalytic activity under visible light of Fe-doped CeO
2 nanoparticles synthesized by flame spray pyrolysis |
title_short |
Photocatalytic activity under visible light of Fe-doped CeO
2 nanoparticles synthesized by flame spray pyrolysis |
title_full |
Photocatalytic activity under visible light of Fe-doped CeO
2 nanoparticles synthesized by flame spray pyrolysis |
title_fullStr |
Photocatalytic activity under visible light of Fe-doped CeO
2 nanoparticles synthesized by flame spray pyrolysis |
title_full_unstemmed |
Photocatalytic activity under visible light of Fe-doped CeO
2 nanoparticles synthesized by flame spray pyrolysis |
title_sort |
photocatalytic activity under visible light of fe-doped ceo
2 nanoparticles synthesized by flame spray pyrolysis |
publishDate |
2014 |
url |
http://www.scopus.com/inward/record.url?eid=2-s2.0-84867411514&partnerID=40&md5=68e7401ba4b83e992e6850a6ddb987e6 http://cmuir.cmu.ac.th/handle/6653943832/6919 |
_version_ |
1681420703892504576 |