Structural Properties and Photocatalytic Activity of TiO 2 /Au Nanocomposites Synthesized with Glucose
Abstract A one‐pot synthesis of plasmonic gold‐modified TiO 2 nanocomposites is reported by using glucose reduction of HAuCl 4 in presence of titanium tetraisopropoxide. The resulting nanocomposites are characterized by thermal‐gravimetric analyses, X‐ray diffraction combined with X‐ray fluorescence...
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Published in | Particle & particle systems characterization Vol. 41 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
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Wiley-VCH Verlag
22.04.2024
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Abstract | Abstract
A one‐pot synthesis of plasmonic gold‐modified TiO
2
nanocomposites is reported by using glucose reduction of HAuCl
4
in presence of titanium tetraisopropoxide. The resulting nanocomposites are characterized by thermal‐gravimetric analyses, X‐ray diffraction combined with X‐ray fluorescence and photoelectron spectroscopies. A binary system of β‐TiO
2
and anatase phases is obtained for low Au content while only anatase form is favored when the initial Au rate rises. This investigation also suggests the inclusion of gold in the TiO
2
structure. Although the optical bandgap of the different nanocomposites remains around 3 eV, the increase of Au content induces a shift of both valence and conduction edge bands to lower energy levels. The photocatalytic activity of TiO
2
/Au nanocomposites is assessed through the decolorization of different cationic and anionic dyes as model compounds. Regarding rhodamine and methylene blue dyes, the sample TiO
2
modified with 3.5 wt% of Au presents the best performance. The relation between the structure of the nanocomposites and their capacity to degrade pollutants is discussed. |
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AbstractList | Abstract
A one‐pot synthesis of plasmonic gold‐modified TiO
2
nanocomposites is reported by using glucose reduction of HAuCl
4
in presence of titanium tetraisopropoxide. The resulting nanocomposites are characterized by thermal‐gravimetric analyses, X‐ray diffraction combined with X‐ray fluorescence and photoelectron spectroscopies. A binary system of β‐TiO
2
and anatase phases is obtained for low Au content while only anatase form is favored when the initial Au rate rises. This investigation also suggests the inclusion of gold in the TiO
2
structure. Although the optical bandgap of the different nanocomposites remains around 3 eV, the increase of Au content induces a shift of both valence and conduction edge bands to lower energy levels. The photocatalytic activity of TiO
2
/Au nanocomposites is assessed through the decolorization of different cationic and anionic dyes as model compounds. Regarding rhodamine and methylene blue dyes, the sample TiO
2
modified with 3.5 wt% of Au presents the best performance. The relation between the structure of the nanocomposites and their capacity to degrade pollutants is discussed. A one‐pot synthesis of plasmonic gold‐modified TiO 2 nanocomposites is reported by using glucose reduction of HAuCl 4 in presence of titanium tetraisopropoxide. The resulting nanocomposites are characterized by thermal‐gravimetric analyses, X‐ray diffraction combined with X‐ray fluorescence and photoelectron spectroscopies. A binary system of β‐TiO 2 and anatase phases is obtained for low Au content while only anatase form is favored when the initial Au rate rises. This investigation also suggests the inclusion of gold in the TiO 2 structure. Although the optical bandgap of the different nanocomposites remains around 3 eV, the increase of Au content induces a shift of both valence and conduction edge bands to lower energy levels. The photocatalytic activity of TiO 2 /Au nanocomposites is assessed through the decolorization of different cationic and anionic dyes as model compounds. Regarding rhodamine and methylene blue dyes, the sample TiO 2 modified with 3.5 wt% of Au presents the best performance. The relation between the structure of the nanocomposites and their capacity to degrade pollutants is discussed. |
Author | Lavrynenko, Olena M. Zahornyi, Maksym M. Hotton, Claire Ghazzal, Mohamed Nawfal Paineau, Erwan Quach, Vien‐Duong Pavlenko, Olesya Y. Bodin, Jennifer |
Author_xml | – sequence: 1 givenname: Olena M. surname: Lavrynenko fullname: Lavrynenko, Olena M. organization: Frantsevich Institute for Problems of Materials Science NASU 3 Omeliana Pritsaka Str. Kyiv 03142 Ukraine, CNRS Laboratoire de Physique des Solides Université Paris‐Saclay Orsay 91405 France – sequence: 2 givenname: Maksym M. surname: Zahornyi fullname: Zahornyi, Maksym M. organization: Frantsevich Institute for Problems of Materials Science NASU 3 Omeliana Pritsaka Str. Kyiv 03142 Ukraine – sequence: 3 givenname: Olesya Y. surname: Pavlenko fullname: Pavlenko, Olesya Y. organization: Frantsevich Institute for Problems of Materials Science NASU 3 Omeliana Pritsaka Str. Kyiv 03142 Ukraine – sequence: 4 givenname: Claire surname: Hotton fullname: Hotton, Claire organization: CNRS Laboratoire de Physique des Solides Université Paris‐Saclay Orsay 91405 France – sequence: 5 givenname: Jennifer surname: Bodin fullname: Bodin, Jennifer organization: CNRS Laboratoire de Physique des Solides Université Paris‐Saclay Orsay 91405 France – sequence: 6 givenname: Vien‐Duong surname: Quach fullname: Quach, Vien‐Duong organization: CNRS Institut de Chimie Physique Université Paris‐Saclay Orsay 91405 France – sequence: 7 givenname: Mohamed Nawfal surname: Ghazzal fullname: Ghazzal, Mohamed Nawfal organization: CNRS Institut de Chimie Physique Université Paris‐Saclay Orsay 91405 France – sequence: 8 givenname: Erwan orcidid: 0000-0002-6776-7201 surname: Paineau fullname: Paineau, Erwan organization: CNRS Laboratoire de Physique des Solides Université Paris‐Saclay Orsay 91405 France |
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Cites_doi | 10.1016/0025-5408(82)90085-X 10.1016/j.matpr.2022.03.002 10.1016/j.mssp.2017.12.008 10.1038/nmat3691 10.1038/srep04043 10.1039/D3YA00089C 10.1021/ja2120647 10.1016/j.catcom.2012.08.012 10.1016/j.cej.2023.141514 10.1039/C4CP02201G 10.1016/j.jcis.2003.10.018 10.1016/j.jphotochem.2017.07.004 10.1021/la0015213 10.1016/j.jenvman.2020.110906 10.1039/D1NR08349J 10.1016/j.sab.2006.12.002 10.1021/acsami.6b03842 10.1039/C9TA12665A 10.1039/c39800000694 10.1007/s13204-023-02909-z 10.1039/D0TA12472A 10.3390/catal7070209 10.1021/acsami.3c03451 10.1007/s13204-022-02706-0 10.3390/nano13040704 10.1021/acs.jpclett.3c00509 10.1016/j.jphotochem.2010.07.024 10.1021/j100475a004 10.1038/srep01411 10.1002/anie.201300441 10.1093/nsr/nwaa021 |
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Keywords | titanium dioxide glucose reduction dye degradation noble metals band-gap |
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Snippet | Abstract
A one‐pot synthesis of plasmonic gold‐modified TiO
2
nanocomposites is reported by using glucose reduction of HAuCl
4
in presence of titanium... A one‐pot synthesis of plasmonic gold‐modified TiO 2 nanocomposites is reported by using glucose reduction of HAuCl 4 in presence of titanium... |
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SubjectTerms | Chemical Sciences Material chemistry |
Title | Structural Properties and Photocatalytic Activity of TiO 2 /Au Nanocomposites Synthesized with Glucose |
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