One-Step Hydrothermal Synthesis of Precious Metal-Doped Titanium Dioxide-Graphene Oxide Composites for Photocatalytic Conversion of CO 2 to Ethanol.

Autor: Lertthanaphol N; Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Salaya, Nakornpathom 73170, Thailand., Pienutsa N; Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Salaya, Nakornpathom 73170, Thailand., Chusri K; Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Salaya, Nakornpathom 73170, Thailand., Sornsuchat T; Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Salaya, Nakornpathom 73170, Thailand., Chanthara P; Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Salaya, Nakornpathom 73170, Thailand., Seeharaj P; Advanced Materials Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand., Kim-Lohsoontorn P; Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand., Srinives S; Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Salaya, Nakornpathom 73170, Thailand.
Jazyk: angličtina
Zdroj: ACS omega [ACS Omega] 2021 Dec 15; Vol. 6 (51), pp. 35769-35779. Date of Electronic Publication: 2021 Dec 15 (Print Publication: 2021).
DOI: 10.1021/acsomega.1c05799
Abstrakt: We utilized a one-step hydrothermal process for the synthesis of precious metal-doped titanium dioxide (TiO 2 )/graphene oxide (GO) composites. The metal-doped TiO 2 /GO composites, including silver-TiO 2 /GO (Ag-TiO 2 /GO), palladium-TiO 2 /GO (Pd-TiO 2 /GO), and copper-TiO 2 /GO (Cu-TiO 2 /GO), were synthesized by mixing a metal precursor, titanium butoxide, and graphene oxide in a water-ethanol mixture in an autoclave hydrothermal reactor. The photocatalytic performance of the composites was tested in the photoreduction of carbon dioxide (CO 2 ) to ethanol. Ag-TiO 2 /GO, Pd-TiO 2 /GO, and Cu-TiO 2 /GO exhibited an ethanol production rate of 109, 125, and 233 μmol/g cat h, respectively. The outstanding performances of Cu-TiO 2 /GO can be attributed to a combined effect of key parameters, including optical band gap, crystallite size, and BET surface area.
Competing Interests: The authors declare no competing financial interest.
(© 2021 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
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