Insights into mesoporous MCM-41-supported titania decorated with CuO nanoparticles for enhanced photodegradation of tetracycline antibiotic
In this research, tetracycline photodegradation under UV light was investigated over bare TiO 2 and a series of MCM-41 supported CuO-TiO 2 heterojunctions varying in CuO content with the intent of exploring the effect of MCM-41 presence and especially, CuO addition. Several techniques including XRD,...
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| Veröffentlicht in: | Environmental science and pollution research international 2021, Vol.28 (1), p.862-879 |
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| creator | Khanmohammadi, Morteza Shahrouzi, Javad Rahbar Rahmani, Farhad |
| description | In this research, tetracycline photodegradation under UV light was investigated over bare TiO
2
and a series of MCM-41 supported CuO-TiO
2
heterojunctions varying in CuO content with the intent of exploring the effect of MCM-41 presence and especially, CuO addition. Several techniques including XRD, FESEM, EDX, DRS, BET, and PL were applied to characterize the physicochemical and photophysical properties of synthesized nanocomposites. It was found that the co-existence of MCM-41 and CuO enhances the surface dispersion of Ti species, leading to less number of agglomerates and smaller particle size of TiO
2
, which it promoted photophysical properties and reinforced the interaction of surface species with the support and thereby, the photosite leachings were lessened. However, the excessive loadings alleviate the synergetic effect of CuO due to the significant decrease of surface area, the appearance of more number of agglomerations, and surface coverage of MCM-41. The results revealed that CuO addition not only enhances the photocatalytic activity of TiO
2
/MCM-41 but also makes it reusable in further experiments. It was also observed that the highest photodegradation of tetracycline was obtained over TiO
2
-CuO/MCM-41 nanocomposite containing 5 wt% CuO. It is attributed to less electron-hole recombination, appropriate band gap, smaller number of agglomerations, and more uniform dispersion of photosites. Following the obtained results, a possible reaction mechanism was also proposed. |
| doi_str_mv | 10.1007/s11356-020-10546-0 |
| format | Article |
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2
and a series of MCM-41 supported CuO-TiO
2
heterojunctions varying in CuO content with the intent of exploring the effect of MCM-41 presence and especially, CuO addition. Several techniques including XRD, FESEM, EDX, DRS, BET, and PL were applied to characterize the physicochemical and photophysical properties of synthesized nanocomposites. It was found that the co-existence of MCM-41 and CuO enhances the surface dispersion of Ti species, leading to less number of agglomerates and smaller particle size of TiO
2
, which it promoted photophysical properties and reinforced the interaction of surface species with the support and thereby, the photosite leachings were lessened. However, the excessive loadings alleviate the synergetic effect of CuO due to the significant decrease of surface area, the appearance of more number of agglomerations, and surface coverage of MCM-41. The results revealed that CuO addition not only enhances the photocatalytic activity of TiO
2
/MCM-41 but also makes it reusable in further experiments. It was also observed that the highest photodegradation of tetracycline was obtained over TiO
2
-CuO/MCM-41 nanocomposite containing 5 wt% CuO. It is attributed to less electron-hole recombination, appropriate band gap, smaller number of agglomerations, and more uniform dispersion of photosites. Following the obtained results, a possible reaction mechanism was also proposed.</description><identifier>ISSN: 0944-1344</identifier><identifier>EISSN: 1614-7499</identifier><identifier>DOI: 10.1007/s11356-020-10546-0</identifier><identifier>PMID: 32820444</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Agglomeration ; Anti-Bacterial Agents ; Antibiotics ; Aquatic Pollution ; Atmospheric Protection/Air Quality Control/Air Pollution ; Catalysis ; Catalytic activity ; Copper ; Copper oxides ; Earth and Environmental Science ; Ecotoxicology ; Environment ; Environmental Chemistry ; Environmental Health ; Environmental science ; Heterojunctions ; Holes (electron deficiencies) ; Nanocomposites ; Nanoparticles ; Photocatalysis ; Photodegradation ; Photolysis ; Reaction mechanisms ; Recombination ; Research Article ; Silicon Dioxide ; Titanium ; Titanium dioxide ; Ultraviolet radiation ; Waste Water Technology ; Water Management ; Water Pollution Control ; X-Ray Diffraction</subject><ispartof>Environmental science and pollution research international, 2021, Vol.28 (1), p.862-879</ispartof><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2020</rights><rights>Springer-Verlag GmbH Germany, part of Springer Nature 2020.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c412t-a036e07b311c206d4093ef4e2f487e83aa992be79bda6599410186578f33fe273</citedby><cites>FETCH-LOGICAL-c412t-a036e07b311c206d4093ef4e2f487e83aa992be79bda6599410186578f33fe273</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11356-020-10546-0$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11356-020-10546-0$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/32820444$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Khanmohammadi, Morteza</creatorcontrib><creatorcontrib>Shahrouzi, Javad Rahbar</creatorcontrib><creatorcontrib>Rahmani, Farhad</creatorcontrib><title>Insights into mesoporous MCM-41-supported titania decorated with CuO nanoparticles for enhanced photodegradation of tetracycline antibiotic</title><title>Environmental science and pollution research international</title><addtitle>Environ Sci Pollut Res</addtitle><addtitle>Environ Sci Pollut Res Int</addtitle><description>In this research, tetracycline photodegradation under UV light was investigated over bare TiO
2
and a series of MCM-41 supported CuO-TiO
2
heterojunctions varying in CuO content with the intent of exploring the effect of MCM-41 presence and especially, CuO addition. Several techniques including XRD, FESEM, EDX, DRS, BET, and PL were applied to characterize the physicochemical and photophysical properties of synthesized nanocomposites. It was found that the co-existence of MCM-41 and CuO enhances the surface dispersion of Ti species, leading to less number of agglomerates and smaller particle size of TiO
2
, which it promoted photophysical properties and reinforced the interaction of surface species with the support and thereby, the photosite leachings were lessened. However, the excessive loadings alleviate the synergetic effect of CuO due to the significant decrease of surface area, the appearance of more number of agglomerations, and surface coverage of MCM-41. The results revealed that CuO addition not only enhances the photocatalytic activity of TiO
2
/MCM-41 but also makes it reusable in further experiments. It was also observed that the highest photodegradation of tetracycline was obtained over TiO
2
-CuO/MCM-41 nanocomposite containing 5 wt% CuO. It is attributed to less electron-hole recombination, appropriate band gap, smaller number of agglomerations, and more uniform dispersion of photosites. Following the obtained results, a possible reaction mechanism was also proposed.</description><subject>Agglomeration</subject><subject>Anti-Bacterial Agents</subject><subject>Antibiotics</subject><subject>Aquatic Pollution</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>Catalysis</subject><subject>Catalytic activity</subject><subject>Copper</subject><subject>Copper oxides</subject><subject>Earth and Environmental Science</subject><subject>Ecotoxicology</subject><subject>Environment</subject><subject>Environmental Chemistry</subject><subject>Environmental Health</subject><subject>Environmental science</subject><subject>Heterojunctions</subject><subject>Holes (electron deficiencies)</subject><subject>Nanocomposites</subject><subject>Nanoparticles</subject><subject>Photocatalysis</subject><subject>Photodegradation</subject><subject>Photolysis</subject><subject>Reaction mechanisms</subject><subject>Recombination</subject><subject>Research 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Int</addtitle><date>2021</date><risdate>2021</risdate><volume>28</volume><issue>1</issue><spage>862</spage><epage>879</epage><pages>862-879</pages><issn>0944-1344</issn><eissn>1614-7499</eissn><abstract>In this research, tetracycline photodegradation under UV light was investigated over bare TiO
2
and a series of MCM-41 supported CuO-TiO
2
heterojunctions varying in CuO content with the intent of exploring the effect of MCM-41 presence and especially, CuO addition. Several techniques including XRD, FESEM, EDX, DRS, BET, and PL were applied to characterize the physicochemical and photophysical properties of synthesized nanocomposites. It was found that the co-existence of MCM-41 and CuO enhances the surface dispersion of Ti species, leading to less number of agglomerates and smaller particle size of TiO
2
, which it promoted photophysical properties and reinforced the interaction of surface species with the support and thereby, the photosite leachings were lessened. However, the excessive loadings alleviate the synergetic effect of CuO due to the significant decrease of surface area, the appearance of more number of agglomerations, and surface coverage of MCM-41. The results revealed that CuO addition not only enhances the photocatalytic activity of TiO
2
/MCM-41 but also makes it reusable in further experiments. It was also observed that the highest photodegradation of tetracycline was obtained over TiO
2
-CuO/MCM-41 nanocomposite containing 5 wt% CuO. It is attributed to less electron-hole recombination, appropriate band gap, smaller number of agglomerations, and more uniform dispersion of photosites. Following the obtained results, a possible reaction mechanism was also proposed.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>32820444</pmid><doi>10.1007/s11356-020-10546-0</doi><tpages>18</tpages></addata></record> |
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| ispartof | Environmental science and pollution research international, 2021, Vol.28 (1), p.862-879 |
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| language | eng |
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| subjects | Agglomeration Anti-Bacterial Agents Antibiotics Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution Catalysis Catalytic activity Copper Copper oxides Earth and Environmental Science Ecotoxicology Environment Environmental Chemistry Environmental Health Environmental science Heterojunctions Holes (electron deficiencies) Nanocomposites Nanoparticles Photocatalysis Photodegradation Photolysis Reaction mechanisms Recombination Research Article Silicon Dioxide Titanium Titanium dioxide Ultraviolet radiation Waste Water Technology Water Management Water Pollution Control X-Ray Diffraction |
| title | Insights into mesoporous MCM-41-supported titania decorated with CuO nanoparticles for enhanced photodegradation of tetracycline antibiotic |
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