Photodegradation of Eosin Y Using Silver-Doped Magnetic Nanoparticles
Identifieur interne : 000067 ( Pmc/Checkpoint ); précédent : 000066; suivant : 000068Photodegradation of Eosin Y Using Silver-Doped Magnetic Nanoparticles
Auteurs : Eman Alzahrani [Arabie saoudite]Source :
- International Journal of Analytical Chemistry [ 1687-8760 ] ; 2015.
Abstract
The purification of industrial wastewater from dyes is becoming increasingly important since they are toxic or carcinogenic to human beings. Nanomaterials have been receiving significant attention due to their unique physical and chemical properties compared with their larger-size counterparts. The aim of the present investigation was to fabricate magnetic nanoparticles (MNPs) using a coprecipitation method, followed by coating with silver (Ag) in order to enhance the photocatalytic activity of the MNPs by loading metal onto them. The fabricated magnetic nanoparticles coated with Ag were characterised using different instruments such as a scanning electron microscope (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDAX) spectroscopy, and X-ray diffraction (XRD) analysis. The average size of the magnetic nanoparticles had a mean diameter of about 48 nm, and the average particle size changed to 55 nm after doping. The fabricated Ag-doped magnetic nanoparticles were used for the degradation of eosin Y under UV-lamp irradiation. The experimental results revealed that the use of fabricated magnetic nanoparticles coated with Ag can be considered as reliable methods for the removal of eosin Y since the slope of evaluation of pseudo-first-order rate constant from the slope of the plot between ln(
Url:
DOI: 10.1155/2015/797606
PubMed: 26617638
PubMed Central: 4649070
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Photodegradation of Eosin Y Using Silver-Doped Magnetic Nanoparticles</title><author><name sortKey="Alzahrani, Eman" sort="Alzahrani, Eman" uniqKey="Alzahrani E" first="Eman" last="Alzahrani">Eman Alzahrani</name><affiliation wicri:level="1"><nlm:aff id="I1">Chemistry Department, Faculty of Science, Taif University, P.O. Box 888, Taif, Saudi Arabia</nlm:aff><country xml:lang="fr">Arabie saoudite</country><wicri:regionArea>Chemistry Department, Faculty of Science, Taif University, P.O. Box 888, Taif</wicri:regionArea><wicri:noRegion>Taif</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">26617638</idno><idno type="pmc">4649070</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4649070</idno><idno type="RBID">PMC:4649070</idno><idno type="doi">10.1155/2015/797606</idno><date when="2015">2015</date><idno type="wicri:Area/Pmc/Corpus">000017</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000017</idno><idno type="wicri:Area/Pmc/Curation">000017</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">000017</idno><idno type="wicri:Area/Pmc/Checkpoint">000067</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Checkpoint">000067</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Photodegradation of Eosin Y Using Silver-Doped Magnetic Nanoparticles</title><author><name sortKey="Alzahrani, Eman" sort="Alzahrani, Eman" uniqKey="Alzahrani E" first="Eman" last="Alzahrani">Eman Alzahrani</name><affiliation wicri:level="1"><nlm:aff id="I1">Chemistry Department, Faculty of Science, Taif University, P.O. Box 888, Taif, Saudi Arabia</nlm:aff><country xml:lang="fr">Arabie saoudite</country><wicri:regionArea>Chemistry Department, Faculty of Science, Taif University, P.O. Box 888, Taif</wicri:regionArea><wicri:noRegion>Taif</wicri:noRegion></affiliation></author></analytic><series><title level="j">International Journal of Analytical Chemistry</title><idno type="ISSN">1687-8760</idno><idno type="eISSN">1687-8779</idno><imprint><date when="2015">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>The purification of industrial wastewater from dyes is becoming increasingly important since they are toxic or carcinogenic to human beings. Nanomaterials have been receiving significant attention due to their unique physical and chemical properties compared with their larger-size counterparts. The aim of the present investigation was to fabricate magnetic nanoparticles (MNPs) using a coprecipitation method, followed by coating with silver (Ag) in order to enhance the photocatalytic activity of the MNPs by loading metal onto them. The fabricated magnetic nanoparticles coated with Ag were characterised using different instruments such as a scanning electron microscope (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDAX) spectroscopy, and X-ray diffraction (XRD) analysis. The average size of the magnetic nanoparticles had a mean diameter of about 48 nm, and the average particle size changed to 55 nm after doping. The fabricated Ag-doped magnetic nanoparticles were used for the degradation of eosin Y under UV-lamp irradiation. The experimental results revealed that the use of fabricated magnetic nanoparticles coated with Ag can be considered as reliable methods for the removal of eosin Y since the slope of evaluation of pseudo-first-order rate constant from the slope of the plot between ln(<italic>C</italic><sub><italic>o</italic></sub>/<italic>C</italic>) and the irradiation time was found to be linear. Ag-Fe<sub>3</sub>O<sub>4</sub> nanoparticles would be considered an efficient photocatalyst to degrade textile dyes avoiding the tedious filtration step.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Gurr, E" uniqKey="Gurr E">E. Gurr</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Shahid Ul Islam" uniqKey="Shahid Ul Islam">Shahid-ul-Islam</name></author><author><name sortKey="Mohammad, F" uniqKey="Mohammad F">F. 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<front><journal-meta><journal-id journal-id-type="nlm-ta">Int J Anal Chem</journal-id><journal-id journal-id-type="iso-abbrev">Int J Anal Chem</journal-id><journal-id journal-id-type="publisher-id">IJAC</journal-id><journal-title-group><journal-title>International Journal of Analytical Chemistry</journal-title></journal-title-group><issn pub-type="ppub">1687-8760</issn><issn pub-type="epub">1687-8779</issn><publisher><publisher-name>Hindawi Publishing Corporation</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">26617638</article-id><article-id pub-id-type="pmc">4649070</article-id><article-id pub-id-type="doi">10.1155/2015/797606</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title>Photodegradation of Eosin Y Using Silver-Doped Magnetic Nanoparticles</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Alzahrani</surname><given-names>Eman</given-names></name><xref ref-type="aff" rid="I1"></xref><xref ref-type="corresp" rid="cor1"><sup>*</sup></xref></contrib></contrib-group><aff id="I1">Chemistry Department, Faculty of Science, Taif University, P.O. Box 888, Taif, Saudi Arabia</aff><author-notes><corresp id="cor1">*Eman Alzahrani: <email>em-s-z@hotmail.com</email></corresp><fn fn-type="other"><p>Academic Editor: Lawrence A. Bottomley</p></fn></author-notes><pub-date pub-type="ppub"><year>2015</year></pub-date><pub-date pub-type="epub"><day>4</day><month>11</month><year>2015</year></pub-date><volume>2015</volume><elocation-id>797606</elocation-id><history><date date-type="received"><day>21</day><month>8</month><year>2015</year></date><date date-type="accepted"><day>8</day><month>10</month><year>2015</year></date></history><permissions><copyright-statement>Copyright © 2015 Eman Alzahrani.</copyright-statement><copyright-year>2015</copyright-year><license license-type="open-access"><license-p>This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p></license></permissions><abstract><p>The purification of industrial wastewater from dyes is becoming increasingly important since they are toxic or carcinogenic to human beings. Nanomaterials have been receiving significant attention due to their unique physical and chemical properties compared with their larger-size counterparts. The aim of the present investigation was to fabricate magnetic nanoparticles (MNPs) using a coprecipitation method, followed by coating with silver (Ag) in order to enhance the photocatalytic activity of the MNPs by loading metal onto them. The fabricated magnetic nanoparticles coated with Ag were characterised using different instruments such as a scanning electron microscope (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDAX) spectroscopy, and X-ray diffraction (XRD) analysis. The average size of the magnetic nanoparticles had a mean diameter of about 48 nm, and the average particle size changed to 55 nm after doping. The fabricated Ag-doped magnetic nanoparticles were used for the degradation of eosin Y under UV-lamp irradiation. The experimental results revealed that the use of fabricated magnetic nanoparticles coated with Ag can be considered as reliable methods for the removal of eosin Y since the slope of evaluation of pseudo-first-order rate constant from the slope of the plot between ln(<italic>C</italic><sub><italic>o</italic></sub>/<italic>C</italic>) and the irradiation time was found to be linear. Ag-Fe<sub>3</sub>O<sub>4</sub> nanoparticles would be considered an efficient photocatalyst to degrade textile dyes avoiding the tedious filtration step.</p></abstract></article-meta></front><floats-group><fig id="fig1" orientation="portrait" position="float"><label>Figure 1</label><caption><p>Photographs of aqueous solutions of F<sub>3</sub>O<sub>4</sub> nanoparticles (a), Ag-Fe<sub>3</sub>O<sub>4</sub> nanoparticles in a vial (b) before and after being separated from solution using an external magnet for 3 s, and (c) the dried fabricated materials.</p></caption><graphic xlink:href="IJAC2015-797606.001"></graphic></fig><fig id="fig2" orientation="portrait" position="float"><label>Figure 2</label><caption><p>TEM micrographs of naked Fe<sub>3</sub>O<sub>4</sub> nanoparticles ((a), (c)) and Ag-doped Fe<sub>3</sub>O<sub>4</sub> nanoparticles ((b), (d)) at different magnifications.</p></caption><graphic xlink:href="IJAC2015-797606.002"></graphic></fig><fig id="fig3" orientation="portrait" position="float"><label>Figure 3</label><caption><p>The size distribution histograms of MNPs and Ag-MNPs corresponding to TEM images (a)–(d) shown in <xref ref-type="fig" rid="fig2">Figure 2</xref>. The size distribution was obtained by counting 100 nanoparticles for each sample.</p></caption><graphic xlink:href="IJAC2015-797606.003"></graphic></fig><fig id="fig4" orientation="portrait" position="float"><label>Figure 4</label><caption><p>SEM micrographs of Fe<sub>3</sub>O<sub>4</sub> nanoparticles ((a), (c)) and Ag-doped Fe<sub>3</sub>O<sub>4</sub> nanoparticles ((b), (d)) at different magnifications.</p></caption><graphic xlink:href="IJAC2015-797606.004"></graphic></fig><fig id="fig5" orientation="portrait" position="float"><label>Figure 5</label><caption><p>EDAX of (a) Fe<sub>3</sub>O<sub>4</sub> nanoparticles and (b) Ag-doped Fe<sub>3</sub>O<sub>4</sub> nanoparticles.</p></caption><graphic xlink:href="IJAC2015-797606.005"></graphic></fig><fig id="fig6" orientation="portrait" position="float"><label>Figure 6</label><caption><p>XRD pattern of Fe<sub>3</sub>O<sub>4</sub> nanoparticles.</p></caption><graphic xlink:href="IJAC2015-797606.006"></graphic></fig><fig id="fig7" orientation="portrait" position="float"><label>Figure 7</label><caption><p>Photographs of eosin Y after treatment with the synthesised Ag-Fe<sub>3</sub>O<sub>4</sub> powder at different time intervals; the colour of eosin Y solution faded, indicating degradation of the dye.</p></caption><graphic xlink:href="IJAC2015-797606.007"></graphic></fig><fig id="fig8" orientation="portrait" position="float"><label>Figure 8</label><caption><p>UV-Vis absorption spectra of eosin Y during the course of reaction with the synthesised Ag-MNP powder at different time intervals under ultraviolet light irradiation at room temperature.</p></caption><graphic xlink:href="IJAC2015-797606.008"></graphic></fig><fig id="fig9" orientation="portrait" position="float"><label>Figure 9</label><caption><p>Photodegradation of eosin Y as a function of irradiation time in the absence and presence of MNPs or Ag-MNPs.</p></caption><graphic xlink:href="IJAC2015-797606.009"></graphic></fig><fig id="fig10" orientation="portrait" position="float"><label>Figure 10</label><caption><p>Schematic diagram of the reaction mechanism involved in photocatalytic activity of Ag-MNPs nanoparticles.</p></caption><graphic xlink:href="IJAC2015-797606.010"></graphic></fig><fig id="fig11" orientation="portrait" position="float"><label>Figure 11</label><caption><p>Plot of In(<italic>C</italic><sub><italic>o</italic></sub>/<italic>C</italic>) versus irradiation time.</p></caption><graphic xlink:href="IJAC2015-797606.011"></graphic></fig><fig id="fig12" orientation="portrait" position="float"><label>Figure 12</label><caption><p>Recycled photocatalytic degradation of eosin Y.</p></caption><graphic xlink:href="IJAC2015-797606.012"></graphic></fig><table-wrap id="tab1" orientation="portrait" position="float"><label>Table 1</label><caption><p>The characteristics of eosin Y dye.</p></caption><table frame="hsides" rules="groups"><tbody><tr><td align="left" rowspan="1" colspan="1">Chemical name</td><td align="center" rowspan="1" colspan="1">2-(2,4,5,7-Tetrabromo-6-oxido-3-oxo-3<italic>H</italic>-xanthen-9-yl)benzoate</td></tr><tr><td align="center" colspan="2" rowspan="1"><hr></hr></td></tr><tr><td align="left" rowspan="1" colspan="1">Chemical formula</td><td align="center" rowspan="1" colspan="1">C<sub>20</sub>H<sub>8</sub>Br<sub>4</sub>O<sub>5</sub></td></tr><tr><td align="center" colspan="2" rowspan="1"><hr></hr></td></tr><tr><td align="left" rowspan="1" colspan="1">Chemical structure</td><td align="center" rowspan="1" colspan="1"><inline-graphic xlink:href="IJAC2015-797606.tab1.i001.jpg"></inline-graphic></td></tr><tr><td align="center" colspan="2" rowspan="1"><hr></hr></td></tr><tr><td align="left" rowspan="1" colspan="1">Molecular weight</td><td align="center" rowspan="1" colspan="1">647.89 g mol<sup>−1</sup></td></tr><tr><td align="center" colspan="2" rowspan="1"><hr></hr></td></tr><tr><td align="left" rowspan="1" colspan="1">Type of dye</td><td align="center" rowspan="1" colspan="1">Anionic dye</td></tr><tr><td align="center" colspan="2" rowspan="1"><hr></hr></td></tr><tr><td align="left" rowspan="1" colspan="1"><italic>λ</italic><sub>max</sub></td><td align="center" rowspan="1" colspan="1">515 nm</td></tr></tbody></table></table-wrap></floats-group></pmc><affiliations><list><country><li>Arabie saoudite</li></country></list><tree><country name="Arabie saoudite"><noRegion><name sortKey="Alzahrani, Eman" sort="Alzahrani, Eman" uniqKey="Alzahrani E" first="Eman" last="Alzahrani">Eman Alzahrani</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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