Vol. 2, Issue 3, Part D (2016)

Abstract
In present world photo catalysis is emerging as a new and advanced technique for oxidative removal of Organic and Inorganic waste from water. In this technique semiconductor Nano-particles are used as photo catalyst which on irradiation generates a pair of electrons (e-) and holes (h+) which act as a redox pair to mediate a chemical reaction on catalyst surface. In present work CdS Nano-particles are used as a semiconductor photo catalyst for photo catalytic oxidation of 2-butanol. The progress of reaction has been monitored spectrophoto metrically by noting the absorbance of reaction mixture at different intervals of time. The effect of various parameters like concentration of reactant, time of irradiation, amount of photo catalyst and various types of different photo catalyst on the rate of the reaction has been observed. The use of CdS as a semiconductor photo catalyst is due to its lower band gap energy (2.4 ev) due to which it majorly absorb solar radiations.