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Enhanced Photodegradation of Toxic Pollutants on Plasmonic Au–Ag–AgI/Al2O3 Under Visible Irradiation
Au–Ag–AgI nanoparticles (NPs) were uniformly dispersed onto mesoporous alumina by deposition–precipitation and photoreduction at low temperature. Compared with Ag–AgI/Al 2 O 3 , the catalyst showed higher photocatalytic activity under visible irradiation. In particular, the release of metal ions fro...
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| Published in: | Catalysis letters 2012-05, Vol.142 (5), p.646-654 |
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| cites | cdi_FETCH-LOGICAL-c276t-379fbd081ffba2b7d443c275ec9b2da835d04d8d47a734a74e4686056eeb0623 |
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| container_issue | 5 |
| container_start_page | 646 |
| container_title | Catalysis letters |
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| creator | Peng, Tianwei Hu, Chun Hu, Xuexiang Zhou, Xuefeng Qu, Jiuhui |
| description | Au–Ag–AgI nanoparticles (NPs) were uniformly dispersed onto mesoporous alumina by deposition–precipitation and photoreduction at low temperature. Compared with Ag–AgI/Al
2
O
3
, the catalyst showed higher photocatalytic activity under visible irradiation. In particular, the release of metal ions from the catalyst was significantly inhibited during photodegradation of pollutants. Electron spin resonance and cyclic voltammograms studies under a variety of experimental conditions verified that the coupling of Au and Ag NPs increased the efficiency of light energy conversion and accelerated interfacial electron transfer processes. The main active species involved in the photoreaction of Au–Ag–AgI/Al
2
O
3
were O
2
•−
and excited h
+
on the metal NPs. The presence of several ubiquitous anions, including HCO
3
−
, SO
4
2−
, and NO
3
−
could act as electron donors trapping excited h
+
on the metal NPs to facilitate electron circulation. The results obtained herein indicated that coupled, noble, bimetal NPs exhibited high photosensitivity and photostability due to enhanced surface plasmon resonance and interfacial electron transfer.
Graphical Abstract
Addition of Au made Au–Ag–AgI nanoparticles (NPs) disperse more uniformly onto mesoporous Al
2
O
3
and showed higher photocatalytic activity under visible irradiation. |
| doi_str_mv | 10.1007/s10562-012-0788-2 |
| format | article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2258925780</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2258925780</sourcerecordid><originalsourceid>FETCH-LOGICAL-c276t-379fbd081ffba2b7d443c275ec9b2da835d04d8d47a734a74e4686056eeb0623</originalsourceid><addsrcrecordid>eNp1kLFOwzAQhi0EEqXwAGyWEGOo7TixM0ZVgUqV2qGgbpYTO22q1C52KsHGO_CGPAlOU8HE4LN199_nux-AW4weMEJs5DFKUhIhHA7jPCJnYIATRiLOstV5eCOMo5iR1SW48n6LEMoYzgZgMzEbaUqt4GJjW6v02kkl29oaaCu4tO91CRe2aQ6tNK2HIb1opN9ZE_L54fvzK18fw3SUN2QewxejtIOvta-LRsOpC7T6iLsGF5VsvL453UOwfJwsx8_RbP40HeezqCQsbcOIWVUoxHFVFZIUTFEah0qiy6wgSvI4UYgqriiTLKaSUU1TnobdtS5QSuIhuOuxe2ffDtq3YmsPzoQfBSEJz0jCOAoq3KtKZ713uhJ7V--k-xAYic5P0fspgp-i81N05PsTWfpSNpULttX-t5EkGSY06XSk1_lQMmvt_ib4H_4DFMSGxw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2258925780</pqid></control><display><type>article</type><title>Enhanced Photodegradation of Toxic Pollutants on Plasmonic Au–Ag–AgI/Al2O3 Under Visible Irradiation</title><source>Springer Nature</source><creator>Peng, Tianwei ; Hu, Chun ; Hu, Xuexiang ; Zhou, Xuefeng ; Qu, Jiuhui</creator><creatorcontrib>Peng, Tianwei ; Hu, Chun ; Hu, Xuexiang ; Zhou, Xuefeng ; Qu, Jiuhui</creatorcontrib><description>Au–Ag–AgI nanoparticles (NPs) were uniformly dispersed onto mesoporous alumina by deposition–precipitation and photoreduction at low temperature. Compared with Ag–AgI/Al
2
O
3
, the catalyst showed higher photocatalytic activity under visible irradiation. In particular, the release of metal ions from the catalyst was significantly inhibited during photodegradation of pollutants. Electron spin resonance and cyclic voltammograms studies under a variety of experimental conditions verified that the coupling of Au and Ag NPs increased the efficiency of light energy conversion and accelerated interfacial electron transfer processes. The main active species involved in the photoreaction of Au–Ag–AgI/Al
2
O
3
were O
2
•−
and excited h
+
on the metal NPs. The presence of several ubiquitous anions, including HCO
3
−
, SO
4
2−
, and NO
3
−
could act as electron donors trapping excited h
+
on the metal NPs to facilitate electron circulation. The results obtained herein indicated that coupled, noble, bimetal NPs exhibited high photosensitivity and photostability due to enhanced surface plasmon resonance and interfacial electron transfer.
Graphical Abstract
Addition of Au made Au–Ag–AgI nanoparticles (NPs) disperse more uniformly onto mesoporous Al
2
O
3
and showed higher photocatalytic activity under visible irradiation.</description><identifier>ISSN: 1011-372X</identifier><identifier>EISSN: 1572-879X</identifier><identifier>DOI: 10.1007/s10562-012-0788-2</identifier><language>eng</language><publisher>Boston: Springer US</publisher><subject>Aluminum oxide ; Bimetals ; Catalysis ; Catalysts ; Catalytic activity ; Chemistry ; Chemistry and Materials Science ; Colloidal state and disperse state ; Dispersion ; Electron paramagnetic resonance ; Electron spin ; Electron transfer ; Electrons ; Energy conversion efficiency ; Exact sciences and technology ; General and physical chemistry ; Gold ; Industrial Chemistry/Chemical Engineering ; Irradiation ; Nanoparticles ; Organometallic Chemistry ; Photocatalysis ; Photochemistry ; Photodegradation ; Photosensitivity ; Physical and chemical studies. Granulometry. Electrokinetic phenomena ; Physical Chemistry ; Physical chemistry of induced reactions (with radiations, particles and ultrasonics) ; Pollutants ; Porous materials ; Silver ; Spin resonance ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><ispartof>Catalysis letters, 2012-05, Vol.142 (5), p.646-654</ispartof><rights>Springer Science+Business Media, LLC 2012</rights><rights>2015 INIST-CNRS</rights><rights>Catalysis Letters is a copyright of Springer, (2012). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c276t-379fbd081ffba2b7d443c275ec9b2da835d04d8d47a734a74e4686056eeb0623</citedby><cites>FETCH-LOGICAL-c276t-379fbd081ffba2b7d443c275ec9b2da835d04d8d47a734a74e4686056eeb0623</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25912452$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Peng, Tianwei</creatorcontrib><creatorcontrib>Hu, Chun</creatorcontrib><creatorcontrib>Hu, Xuexiang</creatorcontrib><creatorcontrib>Zhou, Xuefeng</creatorcontrib><creatorcontrib>Qu, Jiuhui</creatorcontrib><title>Enhanced Photodegradation of Toxic Pollutants on Plasmonic Au–Ag–AgI/Al2O3 Under Visible Irradiation</title><title>Catalysis letters</title><addtitle>Catal Lett</addtitle><description>Au–Ag–AgI nanoparticles (NPs) were uniformly dispersed onto mesoporous alumina by deposition–precipitation and photoreduction at low temperature. Compared with Ag–AgI/Al
2
O
3
, the catalyst showed higher photocatalytic activity under visible irradiation. In particular, the release of metal ions from the catalyst was significantly inhibited during photodegradation of pollutants. Electron spin resonance and cyclic voltammograms studies under a variety of experimental conditions verified that the coupling of Au and Ag NPs increased the efficiency of light energy conversion and accelerated interfacial electron transfer processes. The main active species involved in the photoreaction of Au–Ag–AgI/Al
2
O
3
were O
2
•−
and excited h
+
on the metal NPs. The presence of several ubiquitous anions, including HCO
3
−
, SO
4
2−
, and NO
3
−
could act as electron donors trapping excited h
+
on the metal NPs to facilitate electron circulation. The results obtained herein indicated that coupled, noble, bimetal NPs exhibited high photosensitivity and photostability due to enhanced surface plasmon resonance and interfacial electron transfer.
Graphical Abstract
Addition of Au made Au–Ag–AgI nanoparticles (NPs) disperse more uniformly onto mesoporous Al
2
O
3
and showed higher photocatalytic activity under visible irradiation.</description><subject>Aluminum oxide</subject><subject>Bimetals</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Catalytic activity</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Colloidal state and disperse state</subject><subject>Dispersion</subject><subject>Electron paramagnetic resonance</subject><subject>Electron spin</subject><subject>Electron transfer</subject><subject>Electrons</subject><subject>Energy conversion efficiency</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Gold</subject><subject>Industrial Chemistry/Chemical Engineering</subject><subject>Irradiation</subject><subject>Nanoparticles</subject><subject>Organometallic Chemistry</subject><subject>Photocatalysis</subject><subject>Photochemistry</subject><subject>Photodegradation</subject><subject>Photosensitivity</subject><subject>Physical and chemical studies. Granulometry. Electrokinetic phenomena</subject><subject>Physical Chemistry</subject><subject>Physical chemistry of induced reactions (with radiations, particles and ultrasonics)</subject><subject>Pollutants</subject><subject>Porous materials</subject><subject>Silver</subject><subject>Spin resonance</subject><subject>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</subject><issn>1011-372X</issn><issn>1572-879X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp1kLFOwzAQhi0EEqXwAGyWEGOo7TixM0ZVgUqV2qGgbpYTO22q1C52KsHGO_CGPAlOU8HE4LN199_nux-AW4weMEJs5DFKUhIhHA7jPCJnYIATRiLOstV5eCOMo5iR1SW48n6LEMoYzgZgMzEbaUqt4GJjW6v02kkl29oaaCu4tO91CRe2aQ6tNK2HIb1opN9ZE_L54fvzK18fw3SUN2QewxejtIOvta-LRsOpC7T6iLsGF5VsvL453UOwfJwsx8_RbP40HeezqCQsbcOIWVUoxHFVFZIUTFEah0qiy6wgSvI4UYgqriiTLKaSUU1TnobdtS5QSuIhuOuxe2ffDtq3YmsPzoQfBSEJz0jCOAoq3KtKZ713uhJ7V--k-xAYic5P0fspgp-i81N05PsTWfpSNpULttX-t5EkGSY06XSk1_lQMmvt_ib4H_4DFMSGxw</recordid><startdate>20120501</startdate><enddate>20120501</enddate><creator>Peng, Tianwei</creator><creator>Hu, Chun</creator><creator>Hu, Xuexiang</creator><creator>Zhou, Xuefeng</creator><creator>Qu, Jiuhui</creator><general>Springer US</general><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20120501</creationdate><title>Enhanced Photodegradation of Toxic Pollutants on Plasmonic Au–Ag–AgI/Al2O3 Under Visible Irradiation</title><author>Peng, Tianwei ; Hu, Chun ; Hu, Xuexiang ; Zhou, Xuefeng ; Qu, Jiuhui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c276t-379fbd081ffba2b7d443c275ec9b2da835d04d8d47a734a74e4686056eeb0623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Aluminum oxide</topic><topic>Bimetals</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>Catalytic activity</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Colloidal state and disperse state</topic><topic>Dispersion</topic><topic>Electron paramagnetic resonance</topic><topic>Electron spin</topic><topic>Electron transfer</topic><topic>Electrons</topic><topic>Energy conversion efficiency</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Gold</topic><topic>Industrial Chemistry/Chemical Engineering</topic><topic>Irradiation</topic><topic>Nanoparticles</topic><topic>Organometallic Chemistry</topic><topic>Photocatalysis</topic><topic>Photochemistry</topic><topic>Photodegradation</topic><topic>Photosensitivity</topic><topic>Physical and chemical studies. Granulometry. Electrokinetic phenomena</topic><topic>Physical Chemistry</topic><topic>Physical chemistry of induced reactions (with radiations, particles and ultrasonics)</topic><topic>Pollutants</topic><topic>Porous materials</topic><topic>Silver</topic><topic>Spin resonance</topic><topic>Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Peng, Tianwei</creatorcontrib><creatorcontrib>Hu, Chun</creatorcontrib><creatorcontrib>Hu, Xuexiang</creatorcontrib><creatorcontrib>Zhou, Xuefeng</creatorcontrib><creatorcontrib>Qu, Jiuhui</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central</collection><collection>AUTh Library subscriptions: ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><jtitle>Catalysis letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Peng, Tianwei</au><au>Hu, Chun</au><au>Hu, Xuexiang</au><au>Zhou, Xuefeng</au><au>Qu, Jiuhui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhanced Photodegradation of Toxic Pollutants on Plasmonic Au–Ag–AgI/Al2O3 Under Visible Irradiation</atitle><jtitle>Catalysis letters</jtitle><stitle>Catal Lett</stitle><date>2012-05-01</date><risdate>2012</risdate><volume>142</volume><issue>5</issue><spage>646</spage><epage>654</epage><pages>646-654</pages><issn>1011-372X</issn><eissn>1572-879X</eissn><abstract>Au–Ag–AgI nanoparticles (NPs) were uniformly dispersed onto mesoporous alumina by deposition–precipitation and photoreduction at low temperature. Compared with Ag–AgI/Al
2
O
3
, the catalyst showed higher photocatalytic activity under visible irradiation. In particular, the release of metal ions from the catalyst was significantly inhibited during photodegradation of pollutants. Electron spin resonance and cyclic voltammograms studies under a variety of experimental conditions verified that the coupling of Au and Ag NPs increased the efficiency of light energy conversion and accelerated interfacial electron transfer processes. The main active species involved in the photoreaction of Au–Ag–AgI/Al
2
O
3
were O
2
•−
and excited h
+
on the metal NPs. The presence of several ubiquitous anions, including HCO
3
−
, SO
4
2−
, and NO
3
−
could act as electron donors trapping excited h
+
on the metal NPs to facilitate electron circulation. The results obtained herein indicated that coupled, noble, bimetal NPs exhibited high photosensitivity and photostability due to enhanced surface plasmon resonance and interfacial electron transfer.
Graphical Abstract
Addition of Au made Au–Ag–AgI nanoparticles (NPs) disperse more uniformly onto mesoporous Al
2
O
3
and showed higher photocatalytic activity under visible irradiation.</abstract><cop>Boston</cop><pub>Springer US</pub><doi>10.1007/s10562-012-0788-2</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1011-372X |
| ispartof | Catalysis letters, 2012-05, Vol.142 (5), p.646-654 |
| issn | 1011-372X 1572-879X |
| language | eng |
| recordid | cdi_proquest_journals_2258925780 |
| source | Springer Nature |
| subjects | Aluminum oxide Bimetals Catalysis Catalysts Catalytic activity Chemistry Chemistry and Materials Science Colloidal state and disperse state Dispersion Electron paramagnetic resonance Electron spin Electron transfer Electrons Energy conversion efficiency Exact sciences and technology General and physical chemistry Gold Industrial Chemistry/Chemical Engineering Irradiation Nanoparticles Organometallic Chemistry Photocatalysis Photochemistry Photodegradation Photosensitivity Physical and chemical studies. Granulometry. Electrokinetic phenomena Physical Chemistry Physical chemistry of induced reactions (with radiations, particles and ultrasonics) Pollutants Porous materials Silver Spin resonance Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry |
| title | Enhanced Photodegradation of Toxic Pollutants on Plasmonic Au–Ag–AgI/Al2O3 Under Visible Irradiation |
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