Reduced graphene oxide-ZnO hybrid composites as photocatalysts: The role of nature of the molecular target in catalytic performance.
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| Title: | Reduced graphene oxide-ZnO hybrid composites as photocatalysts: The role of nature of the molecular target in catalytic performance. |
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| Authors: | Landström, Anton1 (AUTHOR), Gradone, Alessandro2,3 (AUTHOR), Mazzaro, Raffaello2 (AUTHOR), Morandi, Vittorio2 (AUTHOR), Concina, Isabella1 (AUTHOR) isabella.concina@ltu.se |
| Source: | Ceramics International. Jul2021, Vol. 47 Issue 14, p19346-19355. 10p. |
| Subjects: | Drug target, Photocatalysts, Graphene oxide, Electron microscope techniques, Metallic oxides, Zinc oxide |
| Abstract: | Spurred by controversial literature findings, we enwrapped reduced graphene oxide (rGO) in ZnO hierarchical microstructures (rGO loadings spanning from 0.01 to 2 wt%) using an in situ synthetic procedure. The obtained hybrid composites were carefully characterized, aiming at shining light on the possible role of rGO on the claimed increased performance as photocatalysts. Several characterization tools were exploited to unveil the effect exerted by rGO, including steady state and time resolved photoluminescence, electron microscopies and electrochemical techniques, in order to evaluate the physical, optical and electrical features involved in determining the catalytic degradation of rhodamine B and phenol in water. Several properties of native ZnO structures were found changed upon the rGO enwrapping (including optical absorbance, concentration of native defects in the ZnO matrix and double-layer capacitance), which are all involved in determining the photocatalytic performance of the hybrid composites. The findings discussed in the present work highlight the high complexity of the field of application of graphene-derivatives as supporters of semiconducting metal oxides functionality, which has to be analyzed through a multi-parametric approach. [ABSTRACT FROM AUTHOR] |
| Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 150931025 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Reduced graphene oxide-ZnO hybrid composites as photocatalysts: The role of nature of the molecular target in catalytic performance. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Landström%2C+Anton%22">Landström, Anton</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gradone%2C+Alessandro%22">Gradone, Alessandro</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mazzaro%2C+Raffaello%22">Mazzaro, Raffaello</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Morandi%2C+Vittorio%22">Morandi, Vittorio</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Concina%2C+Isabella%22">Concina, Isabella</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> isabella.concina@ltu.se</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Jul2021, Vol. 47 Issue 14, p19346-19355. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Drug+target%22">Drug target</searchLink><br /><searchLink fieldCode="DE" term="%22Photocatalysts%22">Photocatalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Graphene+oxide%22">Graphene oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+microscope+techniques%22">Electron microscope techniques</searchLink><br /><searchLink fieldCode="DE" term="%22Metallic+oxides%22">Metallic oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Zinc+oxide%22">Zinc oxide</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Spurred by controversial literature findings, we enwrapped reduced graphene oxide (rGO) in ZnO hierarchical microstructures (rGO loadings spanning from 0.01 to 2 wt%) using an in situ synthetic procedure. The obtained hybrid composites were carefully characterized, aiming at shining light on the possible role of rGO on the claimed increased performance as photocatalysts. Several characterization tools were exploited to unveil the effect exerted by rGO, including steady state and time resolved photoluminescence, electron microscopies and electrochemical techniques, in order to evaluate the physical, optical and electrical features involved in determining the catalytic degradation of rhodamine B and phenol in water. Several properties of native ZnO structures were found changed upon the rGO enwrapping (including optical absorbance, concentration of native defects in the ZnO matrix and double-layer capacitance), which are all involved in determining the photocatalytic performance of the hybrid composites. The findings discussed in the present work highlight the high complexity of the field of application of graphene-derivatives as supporters of semiconducting metal oxides functionality, which has to be analyzed through a multi-parametric approach. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ceramint.2021.03.271 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 19346 Subjects: – SubjectFull: Drug target Type: general – SubjectFull: Photocatalysts Type: general – SubjectFull: Graphene oxide Type: general – SubjectFull: Electron microscope techniques Type: general – SubjectFull: Metallic oxides Type: general – SubjectFull: Zinc oxide Type: general Titles: – TitleFull: Reduced graphene oxide-ZnO hybrid composites as photocatalysts: The role of nature of the molecular target in catalytic performance. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Landström, Anton – PersonEntity: Name: NameFull: Gradone, Alessandro – PersonEntity: Name: NameFull: Mazzaro, Raffaello – PersonEntity: Name: NameFull: Morandi, Vittorio – PersonEntity: Name: NameFull: Concina, Isabella IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 07 Text: Jul2021 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 02728842 Numbering: – Type: volume Value: 47 – Type: issue Value: 14 Titles: – TitleFull: Ceramics International Type: main |
| ResultId | 1 |
