CdOaCdS nanocomposites with enhanced photocatalytic activity for hydrogen generation from water

Nanocomposites of CdOaCdS have been prepared in ethylene glycol water mixture followed by heating at 300 degree C. TEM and XRD studies confirmed the atomic scale mixing of CdO and CdS nanoparticles, leading to the formation of CdSO3 phase at the interfacial region between CdO and CdS. Photocatalytic...

Full description

Saved in:
Bibliographic Details
Published in:International journal of hydrogen energy 2013-11, Vol.38 (35), p.15012-15018
Main Authors: Kahane, Shital, Sasikala, R, Vishwanadh, B, Sudarsan, V, Mahamuni, Shailaja
Format: Article
Language:English
Subjects:
Cadmium sulfides
Ethylene glycol
Hydrogen-based energy
Nanocomposites
Nanoparticles
Photocatalysis
Steady state
Surface area
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nanocomposites of CdOaCdS have been prepared in ethylene glycol water mixture followed by heating at 300 degree C. TEM and XRD studies confirmed the atomic scale mixing of CdO and CdS nanoparticles, leading to the formation of CdSO3 phase at the interfacial region between CdO and CdS. Photocatalytic studies for hydrogen generation from water show an enhanced activity for CdOaCdS composites compared to individual components namely CdO or CdS nanoparticles. Based on optical absorption, surface area measurements, steady state and time resolved fluorescence studies, it is established that, enhanced absorption in the visible region, higher surface area and increase in lifetime of the charge carriers are responsible for the observed increase in hydrogen yield from water when composite sample was used as the photocatalyst compared to individual components. The composite sample when combined with Pt as co-catalyst exhibit a large increase in the photocatalytic activity.
ISSN:0360-3199
DOI:10.1016/j.ijhydene.2013.09.077