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TiO2DiazoniumGraphene Oxide Composites: Synthesis and Visible-Light-Driven Photocatalytic Degradation of Methylene Blue
Joint Authors
Vu, Tuan A.
Vuong Hoan, Nguyen Thi
Quang Khieu, Dinh
Thanh, Nguyen Mau
Nguyen, Minh Ngoc
Thang Nguyen, Vo
Van Hung, Nguyen
Nguyen, Van Thang
Nhi, Thoi Thi Kim
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-01-08
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
In the present article, the synthesis of TiO2/diazonium/graphene oxide and its photocatalytic activity for methylene blue (MB) degradation have been demonstrated.
The functionalization of graphene oxide (GO) with diazonium salt (diazonium-GO) was conducted for enhancing the dispersibility of GO in distilled water.
TiO2 was highly dispersed in diazonium-GO to form TiO2/diazonium/graphene.
The obtained specimens were characterized by X-ray diffraction, FT-IR spectroscopy, Raman spectroscopy, UV-Vis spectroscopy, scanning electron microscope, transmission electron microscopy, and X-ray photoelectron spectroscopy.
It was found that the TiO2 phase in TiO2/diazonium/GO composites can be controlled by adjusting the amount of ethanol or titanium oxide in the reactant mixture.
The obtained composites exhibited photocatalytic activities for methylene blue degradation (MB).
The composite with ac.
70% anatase can provide the highest MB degradation efficiency.
The studying of some intermediates for MB photocatalytic degradation using LC-MS showed that structure of MB by the cleavage and oxidation of one or more of the methyl group substituent on the amine groups lead to form compounds with low molecular masses.
Total organic carbon studies confirmed a complete mineralization of MB.
The present catalyst was stable and recyclable after three times with a negligible loss of catalytic activity.
In addition, the TiO2/diazonium/GO can also photocatalyze for the degradation of some other dyes (phenol, methyl red, and Congo red).
American Psychological Association (APA)
Vuong Hoan, Nguyen Thi& Nguyen, Minh Ngoc& Nhi, Thoi Thi Kim& Nguyen, Van Thang& Vu, Tuan A.& Thang Nguyen, Vo…[et al.]. 2020. TiO2DiazoniumGraphene Oxide Composites: Synthesis and Visible-Light-Driven Photocatalytic Degradation of Methylene Blue. Journal of Nanomaterials،Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1188428
Modern Language Association (MLA)
Vuong Hoan, Nguyen Thi…[et al.]. TiO2DiazoniumGraphene Oxide Composites: Synthesis and Visible-Light-Driven Photocatalytic Degradation of Methylene Blue. Journal of Nanomaterials No. 2020 (2020), pp.1-15.
https://search.emarefa.net/detail/BIM-1188428
American Medical Association (AMA)
Vuong Hoan, Nguyen Thi& Nguyen, Minh Ngoc& Nhi, Thoi Thi Kim& Nguyen, Van Thang& Vu, Tuan A.& Thang Nguyen, Vo…[et al.]. TiO2DiazoniumGraphene Oxide Composites: Synthesis and Visible-Light-Driven Photocatalytic Degradation of Methylene Blue. Journal of Nanomaterials. 2020. Vol. 2020, no. 2020, pp.1-15.
https://search.emarefa.net/detail/BIM-1188428
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1188428