Photocatalytic performance of Li1−xAgxVMoO6 (0⩽x⩽1) compounds
[Display omitted] •The synthesis of Li1−xAgxVMoO6 (0⩽x⩽1) compounds with lamellar structure.•The evaluation of mixed metal oxides Li1−xAgxVMoO6 (0⩽x⩽1) as photocatalysts.•A comparison of Li1−xAgxVMoO6 (0⩽x⩽1) and TiO2 Degussa P25.•Ag does not improve Li1−xAgxVMoO6 (0⩽x⩽1) photocatalytic performance....
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| Veröffentlicht in: | Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2013-12, Vol.234, p.327-337 |
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| container_title | Chemical engineering journal (Lausanne, Switzerland : 1996) |
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| creator | Hurtado, Lourdes Torres-García, E. Romero, Rubí Ramírez-Serrano, A. Wood, Joseph Natividad, Reyna |
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•The synthesis of Li1−xAgxVMoO6 (0⩽x⩽1) compounds with lamellar structure.•The evaluation of mixed metal oxides Li1−xAgxVMoO6 (0⩽x⩽1) as photocatalysts.•A comparison of Li1−xAgxVMoO6 (0⩽x⩽1) and TiO2 Degussa P25.•Ag does not improve Li1−xAgxVMoO6 (0⩽x⩽1) photocatalytic performance.•Li1−xAgxVMoO6 (0⩽x⩽1) photocatalytic performance is superior to TiO2.
In this work we report the influence of silver content on the structure and photocatalytic performance of Li1−xAgxVMoO6 compounds for the oxidation of benzyl alcohol under UV irradiation (λ=254nm). Photocatalysts were synthesized by solid state method and their structural and morphologic characterization was carried out by powder X-ray Diffraction, Raman Spectroscopy, SEM, TEM, UV–Vis diffuse reflectance spectroscopy and XPS. The effect of variables including silver content, temperature, catalyst concentration and initial concentration of benzyl alcohol on photocatalytic performance were studied. Experimentation was also carried out with TiO2 (Degussa P25) as reference. It was found that all tested Li1−xAgxVMoO6 (0⩽x⩽1) compounds exhibit higher photocatalytic efficiency than TiO2. However, among mixed oxides, silver was found to diminish their catalytic performance and selectivity towards benzaldehyde. The latter was affected in much less extent than activity (94%, 90% and 87% for LiVMoO6, Li0.8Ag0.2VMoO6 and AgVMoO6, respectively). Kinetic modelling was carried out based on Langmuir–Hinshelwood type expressions. Apparent activation energies were found to be 42kJmol−1 and 60.17kJmol−1 for LiVMoO6 and TiO2, respectively. |
| doi_str_mv | 10.1016/j.cej.2013.08.091 |
| format | Article |
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•The synthesis of Li1−xAgxVMoO6 (0⩽x⩽1) compounds with lamellar structure.•The evaluation of mixed metal oxides Li1−xAgxVMoO6 (0⩽x⩽1) as photocatalysts.•A comparison of Li1−xAgxVMoO6 (0⩽x⩽1) and TiO2 Degussa P25.•Ag does not improve Li1−xAgxVMoO6 (0⩽x⩽1) photocatalytic performance.•Li1−xAgxVMoO6 (0⩽x⩽1) photocatalytic performance is superior to TiO2.
In this work we report the influence of silver content on the structure and photocatalytic performance of Li1−xAgxVMoO6 compounds for the oxidation of benzyl alcohol under UV irradiation (λ=254nm). Photocatalysts were synthesized by solid state method and their structural and morphologic characterization was carried out by powder X-ray Diffraction, Raman Spectroscopy, SEM, TEM, UV–Vis diffuse reflectance spectroscopy and XPS. The effect of variables including silver content, temperature, catalyst concentration and initial concentration of benzyl alcohol on photocatalytic performance were studied. Experimentation was also carried out with TiO2 (Degussa P25) as reference. It was found that all tested Li1−xAgxVMoO6 (0⩽x⩽1) compounds exhibit higher photocatalytic efficiency than TiO2. However, among mixed oxides, silver was found to diminish their catalytic performance and selectivity towards benzaldehyde. The latter was affected in much less extent than activity (94%, 90% and 87% for LiVMoO6, Li0.8Ag0.2VMoO6 and AgVMoO6, respectively). Kinetic modelling was carried out based on Langmuir–Hinshelwood type expressions. Apparent activation energies were found to be 42kJmol−1 and 60.17kJmol−1 for LiVMoO6 and TiO2, respectively.</description><identifier>ISSN: 1385-8947</identifier><identifier>EISSN: 1873-3212</identifier><identifier>DOI: 10.1016/j.cej.2013.08.091</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>benzaldehyde ; Benzyl alcohol ; Catalysts ; chemical engineering ; Diffraction ; Heterogeneous photocatalysis ; Mixed-metal oxides ; oxidation ; oxides ; Photocatalysis ; Raman spectroscopy ; Reflectance ; Selective oxidations ; Silver ; temperature ; TiO2 Degussa P25 ; Titanium dioxide ; ultraviolet radiation ; X-ray diffraction ; X-ray photoelectron spectroscopy</subject><ispartof>Chemical engineering journal (Lausanne, Switzerland : 1996), 2013-12, Vol.234, p.327-337</ispartof><rights>2013 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c354t-32828da3ef67f8f050b2b0bfb3ebc3f08cdcbcae29f370d49347b80d84b2208f3</citedby><cites>FETCH-LOGICAL-c354t-32828da3ef67f8f050b2b0bfb3ebc3f08cdcbcae29f370d49347b80d84b2208f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1385894713011443$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Hurtado, Lourdes</creatorcontrib><creatorcontrib>Torres-García, E.</creatorcontrib><creatorcontrib>Romero, Rubí</creatorcontrib><creatorcontrib>Ramírez-Serrano, A.</creatorcontrib><creatorcontrib>Wood, Joseph</creatorcontrib><creatorcontrib>Natividad, Reyna</creatorcontrib><title>Photocatalytic performance of Li1−xAgxVMoO6 (0⩽x⩽1) compounds</title><title>Chemical engineering journal (Lausanne, Switzerland : 1996)</title><description>[Display omitted]
•The synthesis of Li1−xAgxVMoO6 (0⩽x⩽1) compounds with lamellar structure.•The evaluation of mixed metal oxides Li1−xAgxVMoO6 (0⩽x⩽1) as photocatalysts.•A comparison of Li1−xAgxVMoO6 (0⩽x⩽1) and TiO2 Degussa P25.•Ag does not improve Li1−xAgxVMoO6 (0⩽x⩽1) photocatalytic performance.•Li1−xAgxVMoO6 (0⩽x⩽1) photocatalytic performance is superior to TiO2.
In this work we report the influence of silver content on the structure and photocatalytic performance of Li1−xAgxVMoO6 compounds for the oxidation of benzyl alcohol under UV irradiation (λ=254nm). Photocatalysts were synthesized by solid state method and their structural and morphologic characterization was carried out by powder X-ray Diffraction, Raman Spectroscopy, SEM, TEM, UV–Vis diffuse reflectance spectroscopy and XPS. The effect of variables including silver content, temperature, catalyst concentration and initial concentration of benzyl alcohol on photocatalytic performance were studied. Experimentation was also carried out with TiO2 (Degussa P25) as reference. It was found that all tested Li1−xAgxVMoO6 (0⩽x⩽1) compounds exhibit higher photocatalytic efficiency than TiO2. However, among mixed oxides, silver was found to diminish their catalytic performance and selectivity towards benzaldehyde. The latter was affected in much less extent than activity (94%, 90% and 87% for LiVMoO6, Li0.8Ag0.2VMoO6 and AgVMoO6, respectively). Kinetic modelling was carried out based on Langmuir–Hinshelwood type expressions. Apparent activation energies were found to be 42kJmol−1 and 60.17kJmol−1 for LiVMoO6 and TiO2, respectively.</description><subject>benzaldehyde</subject><subject>Benzyl alcohol</subject><subject>Catalysts</subject><subject>chemical engineering</subject><subject>Diffraction</subject><subject>Heterogeneous photocatalysis</subject><subject>Mixed-metal oxides</subject><subject>oxidation</subject><subject>oxides</subject><subject>Photocatalysis</subject><subject>Raman spectroscopy</subject><subject>Reflectance</subject><subject>Selective oxidations</subject><subject>Silver</subject><subject>temperature</subject><subject>TiO2 Degussa P25</subject><subject>Titanium dioxide</subject><subject>ultraviolet radiation</subject><subject>X-ray diffraction</subject><subject>X-ray photoelectron spectroscopy</subject><issn>1385-8947</issn><issn>1873-3212</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNp9kM1OAjEQgBujiYg-gCf3iIddp-3-tPFEiH8JBhPFa9PttlgCFNvFwBt49i18CF-GJ7EEz04ymTl8M5n5EDrHkGHA5dU0U3qaEcA0A5YBxweog1lFU0owOYw9ZUXKeF4do5MQpgBQcsw7aPD05lqnZCtnm9aqZKm9cX4uF0onziRDi7efX-v-ZP366EZl0oPt9886Jr5MlJsv3WrRhFN0ZOQs6LO_2kXj25uXwX06HN09DPrDVNEib-MljLBGUm3KyjADBdSkhtrUVNeKGmCqUbWSmnBDK2hyTvOqZtCwvCYEmKFd1NvvXXr3vtKhFXMblJ7N5EK7VRC4AuAxMIko3qPKuxC8NmLp7Vz6jcAgdsLEVERhYidMABNRWJy52M8Y6YSceBvE-DkCRZTFK1LwSFzvCR2__LDai6Csjqoa67VqRePsP_t_Abgrfw4</recordid><startdate>20131201</startdate><enddate>20131201</enddate><creator>Hurtado, Lourdes</creator><creator>Torres-García, E.</creator><creator>Romero, Rubí</creator><creator>Ramírez-Serrano, A.</creator><creator>Wood, Joseph</creator><creator>Natividad, Reyna</creator><general>Elsevier B.V</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20131201</creationdate><title>Photocatalytic performance of Li1−xAgxVMoO6 (0⩽x⩽1) compounds</title><author>Hurtado, Lourdes ; Torres-García, E. ; Romero, Rubí ; Ramírez-Serrano, A. ; Wood, Joseph ; Natividad, Reyna</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c354t-32828da3ef67f8f050b2b0bfb3ebc3f08cdcbcae29f370d49347b80d84b2208f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>benzaldehyde</topic><topic>Benzyl alcohol</topic><topic>Catalysts</topic><topic>chemical engineering</topic><topic>Diffraction</topic><topic>Heterogeneous photocatalysis</topic><topic>Mixed-metal oxides</topic><topic>oxidation</topic><topic>oxides</topic><topic>Photocatalysis</topic><topic>Raman spectroscopy</topic><topic>Reflectance</topic><topic>Selective oxidations</topic><topic>Silver</topic><topic>temperature</topic><topic>TiO2 Degussa P25</topic><topic>Titanium dioxide</topic><topic>ultraviolet radiation</topic><topic>X-ray diffraction</topic><topic>X-ray photoelectron spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hurtado, Lourdes</creatorcontrib><creatorcontrib>Torres-García, E.</creatorcontrib><creatorcontrib>Romero, Rubí</creatorcontrib><creatorcontrib>Ramírez-Serrano, A.</creatorcontrib><creatorcontrib>Wood, Joseph</creatorcontrib><creatorcontrib>Natividad, Reyna</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Chemical engineering journal (Lausanne, Switzerland : 1996)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hurtado, Lourdes</au><au>Torres-García, E.</au><au>Romero, Rubí</au><au>Ramírez-Serrano, A.</au><au>Wood, Joseph</au><au>Natividad, Reyna</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photocatalytic performance of Li1−xAgxVMoO6 (0⩽x⩽1) compounds</atitle><jtitle>Chemical engineering journal (Lausanne, Switzerland : 1996)</jtitle><date>2013-12-01</date><risdate>2013</risdate><volume>234</volume><spage>327</spage><epage>337</epage><pages>327-337</pages><issn>1385-8947</issn><eissn>1873-3212</eissn><abstract>[Display omitted]
•The synthesis of Li1−xAgxVMoO6 (0⩽x⩽1) compounds with lamellar structure.•The evaluation of mixed metal oxides Li1−xAgxVMoO6 (0⩽x⩽1) as photocatalysts.•A comparison of Li1−xAgxVMoO6 (0⩽x⩽1) and TiO2 Degussa P25.•Ag does not improve Li1−xAgxVMoO6 (0⩽x⩽1) photocatalytic performance.•Li1−xAgxVMoO6 (0⩽x⩽1) photocatalytic performance is superior to TiO2.
In this work we report the influence of silver content on the structure and photocatalytic performance of Li1−xAgxVMoO6 compounds for the oxidation of benzyl alcohol under UV irradiation (λ=254nm). Photocatalysts were synthesized by solid state method and their structural and morphologic characterization was carried out by powder X-ray Diffraction, Raman Spectroscopy, SEM, TEM, UV–Vis diffuse reflectance spectroscopy and XPS. The effect of variables including silver content, temperature, catalyst concentration and initial concentration of benzyl alcohol on photocatalytic performance were studied. Experimentation was also carried out with TiO2 (Degussa P25) as reference. It was found that all tested Li1−xAgxVMoO6 (0⩽x⩽1) compounds exhibit higher photocatalytic efficiency than TiO2. However, among mixed oxides, silver was found to diminish their catalytic performance and selectivity towards benzaldehyde. The latter was affected in much less extent than activity (94%, 90% and 87% for LiVMoO6, Li0.8Ag0.2VMoO6 and AgVMoO6, respectively). Kinetic modelling was carried out based on Langmuir–Hinshelwood type expressions. Apparent activation energies were found to be 42kJmol−1 and 60.17kJmol−1 for LiVMoO6 and TiO2, respectively.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.cej.2013.08.091</doi><tpages>11</tpages></addata></record> |
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| subjects | benzaldehyde Benzyl alcohol Catalysts chemical engineering Diffraction Heterogeneous photocatalysis Mixed-metal oxides oxidation oxides Photocatalysis Raman spectroscopy Reflectance Selective oxidations Silver temperature TiO2 Degussa P25 Titanium dioxide ultraviolet radiation X-ray diffraction X-ray photoelectron spectroscopy |
| title | Photocatalytic performance of Li1−xAgxVMoO6 (0⩽x⩽1) compounds |
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