Effects of Thiols on Photocatalytic Properties of Nano-CdS- Polythiourethane Composite Particles
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Nano-CdS-polythiourethane (PTU) composite particles (CdS-PTU) are prepared via making nano-CdS in a reverse micellar system, followed by surface-modification with thiol molecules, and polymerization (polyaddition) of hexamethylene diisocyanate (HDI) and dithiols (xylene-<I>α</I>, <I>α</I>′-dithiol: XDT) or 4-hydroxythiophenol (HTP) in the presence of the surface-modified nano-CdS. The effects of thiols used as the surface-modification agent and polymerizing monomer (XDT or HTP) on stability of CdS-PTU for photo-irradiation during photocatalytic H<SUB>2</SUB> generation from aqueous solution of 2-propanol are investigated. The composite containing nano-CdS more dispersed exhibits improved photocatalytic properties, which are found to have been effected by employing benzyl mercaptan as the surface-modification agent for nano-CdS, and HTP as the monomer.
- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 31(6), pp.1003-1006, 1998-12-01
The Society of Chemical Engineers, Japan