Please use this identifier to cite or link to this item: http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1273
Enhanced Photocatalytic Activity for H2 Production by RGO/P25 Composite through UV Assisted Anchoring
BLANCA CRISTINA HERNANDEZ MAJALCA
ROGELIO SALINAS GUTIERREZ
ALEJANDRO LOPEZ ORTIZ
VIRGINIA HIDALINA COLLINS MARTINEZ
MIGUEL JESUS MELENDEZ ZARAGOZA
Acceso Abierto
Atribución-NoComercial-SinDerivadas
graphene oxide
Photocatalysis
In this work, graphene oxide (GO) was prepared by the Tour method from graphite powder employing a microwave pre-treatment, which was used to modify TiO2 (P25). A composite of reduced graphene oxide (RGO) and P25 was prepared (RGO/P25) by UV assisted anchoring of P25 on RGO. The structure, morphology, textural and optical properties were studied by XRD, SEM, BET and UV-Vis techniques, respectively. Water splitting photocatalytic evaluation used an aqueous methanol solution of the suspended composite material and a 250 W mercury lamp as light irradiation source. Results indicate a bandgap value of 2.57 eV for the RGO/P25 composite, while this material exhibited a H2 production rate greater than either P25 or graphene oxide alone. A significant enhancement in the hydrogen production rate was achieved by RGO/P25 as photocatalyst obtaining ~400 μmol H2/gh. This can be presumably attributed to graphene oxide acting as an electron collector and transporter in the RGO/P25 composite.
2017
Memoria de congreso
Inglés
OTRAS
Versión revisada
submittedVersion - Versión revisada
Appears in Collections:Artículos de Congresos

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