%0 Journal Article
%T Photoelectrochemical Studies at CdS/PTTh Nanoparticles Interfaces
%A Kasem K. Kasem
%A Nida Zia
%J Materials Sciences and Applications
%P 719-727
%@ 2153-1188
%D 2012
%I Scientific Research Publishing
%R 10.4236/msa.2012.310105
%X Photo-activities at Inorganic/Organic/Interfaces (IOI) consisting of CdS/ Polyterthiophine (PTTh) assemblies were investigated in nanoparticle suspension and in thin solid film forms. The effects PTTh modifier cause on the photoelec-trochemical behavior of the IOI were investigated using [Fe(CN)<sub>6</sub>]<sup>4-</sup> as photoactive hydrated electron donor agent. Results show that the adsorption process of [Fe(CN)<sub>6</sub>]<sup>3-</sup> (photolysis product) control the photoactivity outcome of IOI assemblies. CdS/PTTh shows lower heterogeneous photochemical response than native CdS. Native CdS amorphous nanoparticles adsorb more [Fe(CN)<sub>6</sub>]<sup>3-</sup> with very steady adsorption /desorption process than the modified ones. The interface activities were explained by analyzing the IOI junctionsĄŻ characteristics, such as electron affinity, work function and hole/electrons barrier heights. The aqueous nano-systems retained moderate stability as indicated by the reproducibility of their photocatalytic activities. Both [Fe(CN)<sub>6</sub>]<sup>4-</sup> and PTTh contributed to the stability of native CdS surfaces.
%K Poly-Terthiophine
%K Nanoparticles
%K Photolysis
%K Inorganic/Organic/Interface
%K CdS
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=23493