Is Graphene a Stable Platform for Photocatalysis? Mineralization of Reduced Graphene Oxide With UV-Irradiated TiO2 Nanoparticles

2014 ◽  
Vol 26 (15) ◽  
pp. 4662-4668 ◽  
Author(s):  
James G. Radich ◽  
Anthony L. Krenselewski ◽  
Jiadong Zhu ◽  
Prashant V. Kamat
Keyword(s):  
Graphene Oxide ◽  
Tio2 Nanoparticles ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene

Enhanced gas sensing and photocatalytic activity of reduced graphene oxide loaded TiO2 nanoparticles

2021 ◽  
pp. 138897
Author(s):  
Suresh Sagadevan ◽  
J. Anita Lett ◽  
Getu Kassegn Weldegebrieal ◽  
Md Rokon ud Dowla Biswas ◽  
Won Chun Oh ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Tio2 Nanoparticles ◽  
Reduced Graphene Oxide ◽  
Gas Sensing ◽  
Reduced Graphene

Polyurethane sponge facilitating highly dispersed TiO2 nanoparticles on reduced graphene oxide sheets for enhanced photoelectro-oxidation of ethanol

2015 ◽  
Vol 3 (30) ◽  
pp. 15675-15682 ◽  
Author(s):  
Lin Jing ◽  
Hui Ling Tan ◽  
Rose Amal ◽  
Yun Hau Ng ◽  
Ke-Ning Sun
Keyword(s):  
Graphene Oxide ◽  
Tio2 Nanoparticles ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Highly Dispersed ◽  
Polyurethane Sponge ◽  
Oxidation Of Ethanol ◽  
Graphene Oxide Sheets

Sponge-template TiO2-reduced graphene oxide (RGO) is prepared with improved dispersion of TiO2 on RGO sheets for efficient photoelectro-oxidation of ethanol.

scholarly journals Preparation and Characterization of Reduced Graphene Oxide/Titanium Dioxide Composites by Hydrothermal Method

2019 ◽  
Vol 4 (9) ◽  
pp. 165-173
Author(s):  
Guillermo A Santamaría Juárez ◽  
Estela Gómez Barojas ◽  
Enrique Quiroga-González ◽  
Enrique Sánchez-Mora ◽  
Juana Deisy Santamaría-Juárez
Keyword(s):  
Titanium Dioxide ◽  
Graphene Oxide ◽  
Tio2 Nanoparticles ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
Hydrothermal Process ◽  
Xps Spectra ◽  
Industrial Batch ◽  
Reduced Graphene

In the present work, reduced graphene oxide/Titanium dioxide (rGO/TiO2) composites (1:1 and 1:2 wt %) have been synthesized by the hydrothermal method using graphene oxide (GO) and commercial TiO2 as precursors. Previously, we prepared the GO, in the way optimizing and making safer, the Hummers route. We have chosen the hydrothermal method to prepare the composites because it offers several advantages: 1) It consist of a very simple experimental setup, 2) it utilizes only water, instead of Hydrazine or Sulfonate used as chemical reductants in traditional methods, avoiding the incorporation of un-willing impurities into GO sheets, 3) the temperature and pressure condition reached in the closed hydrothermal system have promoted the recovery of π-conjugation after dehydration diminishing defects concentration and increasing the degree of reduction of the GO sheets, and 4) this system is compatible with industrial batch production. The structure, surface morphology, chemical composition and optical properties of GO, TiO2 and rGO/TiO2 composites have been analyzed using, TEM, FTIR, Raman- and XPS-spectroscopy. TEM micrographs show that the TiO2 nanoparticles are non-homogenously adsorbed onto the GO sheets. FTIR spectra of the rGO/TiO2 composites suggest that during the hydrothermal process the GO sheets get reduced. Raman spectra suggest that TiO2 remains with anatase structure even after the hydrothermal process. The C 1s XPS spectra of the rGO/TiO2 composites have shown a significant decrease of oxygenated carbon related signals, confirming that most of the oxygenated groups were successfully removed. Based on these characterization results we infer that, GO sheets of good quality have been successfully synthesized and the GO sheets have been partially reduced via the TiO2 nanoparticles anchored during the hydrothermal process.

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