Preparation and Catalytic Oxidation of Methanol by Pt/g-C3N4/TNTs Composites

YONG-PING LUO, SHAO-YAN CAI, ZI-CHUN HE, ZONG-HU XIAO, WEI ZHONG, HUI OU, HAI-YAN FU

Abstract


In this paper, g-C3N4/TNTs composites were in situ prepared based on TiO2 nanotubes (TNTs) and graphitic carbon nitride (g-C3N4). After deposition of platinum (Pt), Pt/g-C3N4/TNTs catalytic electrode was used for catalytic oxidation of methanol. SEM and XRD were used to characterize the morphology and crystal of the catalytic electrode. Compared with Pt/g-C3N4 and Pt/TNTs, Pt/g-C3N4/TNTs catalyst has better catalytic performance and anti-CO toxicity. Pt/ g-C3N4/TNTs has better anti-CO toxicity ability in catalytic oxidation of methanol, due to higher ratio of forward peak current density and reverse peak current density ratio (Jf/Jb). The improved electrocatalytic performance is attributed to the improved CO adsorption resistance of Pt nanoparticles prepared in situ by g-C3N4/TNTs complex. One possible mechanism is the synergistic effect of g-C3N4 and TNTs to enable Pt catalysts immobilized in g-C3N4/TNTs composite to achieve better catalytic performance. The results showed that g-C3N4/TNTs composites prepared in situ, as a support material, was suitable for preparing Pt base catalyst for electrocatalytic oxidation of methanol.

Keywords


Methanol, Catalytic oxidation, G-C3N4, TiO2 Nanotube.Text


DOI
10.12783/dteees/peems2019/33957

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