Enhancing Semiconductor-Photocatalytic Organic Transformation through Interparticle Charge Transfer
C. Karunakaran, S. Karuthapandian
Diphenylamine (DPA) is photocatalytically transformed into N-phenyl-p-benzoquinonimine (PBQ) by ZnS nanoparticles and the reaction conforms to Langmuir-Hinshelwood (L-H) kinetics. The kinetic law has been deduced by studying the reaction under different experimental conditions. The kinetic parameters have been evaluated from the obtained results. Particulate ZnS with ZnO or TiO2 or CeO2 or CdO nanoparticles shows enhanced photocatalytic organic transformation. ZnS, ZnO, TiO2, CeO2 and CdO nanoparticles agglomerate in alcoholic medium. Interparticle charge transfer is the likely reason for the enhanced photocatalysis.
ZnS, ZnO, TiO2, CeO2, CdO, Agglomeration
Published online 2/25/2018, 12 pages
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