Nano-Structuration of WO<sub>3</sub> Nanoleaves by Localized Hydrolysis of an Organometallic Zn Precursor: Application to Photocatalytic NO<sub>2</sub> Abatement
WO<sub>3</sub> is a known photocatalytic metal oxide frequently studied for its depollution properties. However, it suffers from a high recombination rate of the photogenerated electron/holes pair that is detrimental to its performance. In this paper, we present a new chemical method to...
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MDPI AG
2022-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/24/4360 |
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| author | Kevin Castello Lux Katia Fajerwerg Julie Hot Erick Ringot Alexandra Bertron Vincent Collière Myrtil L. Kahn Stéphane Loridant Yannick Coppel Pierre Fau |
| author_facet | Kevin Castello Lux Katia Fajerwerg Julie Hot Erick Ringot Alexandra Bertron Vincent Collière Myrtil L. Kahn Stéphane Loridant Yannick Coppel Pierre Fau |
| author_sort | Kevin Castello Lux |
| collection | DOAJ |
| description | WO<sub>3</sub> is a known photocatalytic metal oxide frequently studied for its depollution properties. However, it suffers from a high recombination rate of the photogenerated electron/holes pair that is detrimental to its performance. In this paper, we present a new chemical method to decorate WO<sub>3</sub> nanoleaves (NLs) with a complementary metal oxide (ZnWO<sub>4</sub>) in order to improve the photocatalytic performance of the composite material for the abatement of 400 ppb NO<sub>2</sub> under mild UV exposure. Our strategy was to synthesize WO<sub>3</sub>·2H<sub>2</sub>O nanoleaves, then, to expose them, in water-free organic solution, to an organometallic precursor of Zn(Cy)<sub>2</sub>. A structural water molecule from WO<sub>3</sub>·2H<sub>2</sub>O spontaneously decomposes Zn(Cy)<sub>2</sub> and induces the formation of the ZnO@WO<sub>3</sub>·H<sub>2</sub>O nanocomposite. The material was characterized by electronic microscopy (SEM, TEM), TGA, XRD, Raman and solid NMR spectroscopies. A simple thermal treatment under air at 500 °C affords the ZnWO<sub>4</sub>@WO<sub>3</sub> nanocomposite. The resulting material, additionally decorated with 1% wt. Au, presents a remarkable increase (+166%) in the photocatalytic abatement of NO<sub>2</sub> under UV compared to the pristine WO<sub>3</sub> NLs. This synthesis method paves the way to the versatile preparation of a wide range of MOx@WO<sub>3</sub> nanocomposites (MOx = metal oxide). |
| first_indexed | 2024-03-09T16:01:02Z |
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| id | doaj.art-290fc996b88f4434b62e48bd36415d29 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T16:01:02Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-290fc996b88f4434b62e48bd36415d292023-11-24T17:03:01ZengMDPI AGNanomaterials2079-49912022-12-011224436010.3390/nano12244360Nano-Structuration of WO<sub>3</sub> Nanoleaves by Localized Hydrolysis of an Organometallic Zn Precursor: Application to Photocatalytic NO<sub>2</sub> AbatementKevin Castello Lux0Katia Fajerwerg1Julie Hot2Erick Ringot3Alexandra Bertron4Vincent Collière5Myrtil L. Kahn6Stéphane Loridant7Yannick Coppel8Pierre Fau9LMDC, INSA/UPS Génie Civil, 135 Avenue de Rangueil, CEDEX 4, 31077 Toulouse, FranceLCC-CNRS, UPR8241, 205 Route de Narbonne, CEDEX 4, 31077 Toulouse, FranceLMDC, INSA/UPS Génie Civil, 135 Avenue de Rangueil, CEDEX 4, 31077 Toulouse, FranceLMDC, INSA/UPS Génie Civil, 135 Avenue de Rangueil, CEDEX 4, 31077 Toulouse, FranceLMDC, INSA/UPS Génie Civil, 135 Avenue de Rangueil, CEDEX 4, 31077 Toulouse, FranceLCC-CNRS, UPR8241, 205 Route de Narbonne, CEDEX 4, 31077 Toulouse, FranceLCC-CNRS, UPR8241, 205 Route de Narbonne, CEDEX 4, 31077 Toulouse, FranceUniv. Lyon, Université Claude Bernard-Lyon 1, CNRS, IRCELYON-UMR 5256, 2 av. A. Einstein, 69626 Villeurbanne, FranceLCC-CNRS, UPR8241, 205 Route de Narbonne, CEDEX 4, 31077 Toulouse, FranceUniversité de Toulouse, UT3 Paul Sabatier, 118 Route de Narbonne, CEDEX 04, 31062 Toulouse, FranceWO<sub>3</sub> is a known photocatalytic metal oxide frequently studied for its depollution properties. However, it suffers from a high recombination rate of the photogenerated electron/holes pair that is detrimental to its performance. In this paper, we present a new chemical method to decorate WO<sub>3</sub> nanoleaves (NLs) with a complementary metal oxide (ZnWO<sub>4</sub>) in order to improve the photocatalytic performance of the composite material for the abatement of 400 ppb NO<sub>2</sub> under mild UV exposure. Our strategy was to synthesize WO<sub>3</sub>·2H<sub>2</sub>O nanoleaves, then, to expose them, in water-free organic solution, to an organometallic precursor of Zn(Cy)<sub>2</sub>. A structural water molecule from WO<sub>3</sub>·2H<sub>2</sub>O spontaneously decomposes Zn(Cy)<sub>2</sub> and induces the formation of the ZnO@WO<sub>3</sub>·H<sub>2</sub>O nanocomposite. The material was characterized by electronic microscopy (SEM, TEM), TGA, XRD, Raman and solid NMR spectroscopies. A simple thermal treatment under air at 500 °C affords the ZnWO<sub>4</sub>@WO<sub>3</sub> nanocomposite. The resulting material, additionally decorated with 1% wt. Au, presents a remarkable increase (+166%) in the photocatalytic abatement of NO<sub>2</sub> under UV compared to the pristine WO<sub>3</sub> NLs. This synthesis method paves the way to the versatile preparation of a wide range of MOx@WO<sub>3</sub> nanocomposites (MOx = metal oxide).https://www.mdpi.com/2079-4991/12/24/4360WO<sub>3</sub> nanoleaveshetero nanomaterialslocalized hydrolysisphotocatalysisNO<sub>2</sub> abatement |
| spellingShingle | Kevin Castello Lux Katia Fajerwerg Julie Hot Erick Ringot Alexandra Bertron Vincent Collière Myrtil L. Kahn Stéphane Loridant Yannick Coppel Pierre Fau Nano-Structuration of WO<sub>3</sub> Nanoleaves by Localized Hydrolysis of an Organometallic Zn Precursor: Application to Photocatalytic NO<sub>2</sub> Abatement Nanomaterials WO<sub>3</sub> nanoleaves hetero nanomaterials localized hydrolysis photocatalysis NO<sub>2</sub> abatement |
| title | Nano-Structuration of WO<sub>3</sub> Nanoleaves by Localized Hydrolysis of an Organometallic Zn Precursor: Application to Photocatalytic NO<sub>2</sub> Abatement |
| title_full | Nano-Structuration of WO<sub>3</sub> Nanoleaves by Localized Hydrolysis of an Organometallic Zn Precursor: Application to Photocatalytic NO<sub>2</sub> Abatement |
| title_fullStr | Nano-Structuration of WO<sub>3</sub> Nanoleaves by Localized Hydrolysis of an Organometallic Zn Precursor: Application to Photocatalytic NO<sub>2</sub> Abatement |
| title_full_unstemmed | Nano-Structuration of WO<sub>3</sub> Nanoleaves by Localized Hydrolysis of an Organometallic Zn Precursor: Application to Photocatalytic NO<sub>2</sub> Abatement |
| title_short | Nano-Structuration of WO<sub>3</sub> Nanoleaves by Localized Hydrolysis of an Organometallic Zn Precursor: Application to Photocatalytic NO<sub>2</sub> Abatement |
| title_sort | nano structuration of wo sub 3 sub nanoleaves by localized hydrolysis of an organometallic zn precursor application to photocatalytic no sub 2 sub abatement |
| topic | WO<sub>3</sub> nanoleaves hetero nanomaterials localized hydrolysis photocatalysis NO<sub>2</sub> abatement |
| url | https://www.mdpi.com/2079-4991/12/24/4360 |
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