Please use this identifier to cite or link to this item: http://cmuir.cmu.ac.th/jspui/handle/6653943832/52567
Title: Photocatalytic mineralization of carboxylic acids over Fe-loaded ZnS nanoparticles
Authors: Natda Wetchakun
Burapat Incessungvorn
Khatcharin Wetchakun
Sukon Phanichphant
Keywords: Engineering
Materials Science
Physics and Astronomy
Issue Date: 1-Apr-2013
Abstract: Zinc sulfide (ZnS) nanoparticles prepared by hydrothermal synthesis were subsequentially impregnated with different iron amounts (0.5-5.0 at%) to obtain Fe-loaded ZnS nanoparticles. Phase composition, crystallinity, crystal size, and morphology of 0.5-5.0 at% Fe-loaded ZnS nanoparticles were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDXS), X-ray photoelectron spectroscopy (XPS), and inductively coupled plasma (ICP). Specific surface area determined by the Brunauer, Emmett and Teller (BET) method was found to be in the range of 85-197 m2/g. The average particle size obtained from TEM analysis of pure ZnS and 2.0 at% Fe-loaded ZnS nanoparticles was 5-20 nm. The optical absorption properties of the samples measured by UV-vis diffuse reflectance spectroscopy (UV-vis DRS) clearly indicated the bathochromic shift upon loading ZnS with Fe. Photocatalytic activities of pure ZnS and Fe-loaded ZnS nanoparticles were examined by studying the mineralization of oxalic acid and formic acid under UVA illumination. It was found that 2.0 at% Fe-loaded ZnS sample exhibited the highest degradation activity possibly due to the presence of Fe in an optimum amount and the increases of surface area and light absorption in UVA region. © 2013 Elsevier Ltd.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84874300737&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/52567
ISSN: 00255408
Appears in Collections:CMUL: Journal Articles

Files in This Item:
There are no files associated with this item.


Items in CMUIR are protected by copyright, with all rights reserved, unless otherwise indicated.