Article history: Cu Se thin ﬁlm with cubic berzelianite phase was prepared by a simple, low-cost two electrode 2−X Received 1 November 2015 electrochemical technique and the photocatalytic and thermoelectric properties of the thin ﬁlms were Received in revised form investigated. The results showed that Cu Se crystallized in the cubic berzelianite phase and found to 2−X 28 December 2015 possess both direct and indirect band gaps of 2.9 and 1.05 eV respectively, covering almost the entire range Accepted 2 February 2016 of solar-spectrum. The photocatalytic discoloration of aqueous methylene blue (MB) and rose-bengal (RB) Available online 9 February 2016 dyes over Cu Se thin ﬁlms were investigated under visible light irradiation. Cu Se thin ﬁlms showed 2−X 2−X higher catalytic activity for MB compared to RB in presence of H O . The photocatalytic discoloration 2 2 Keywords: followed ﬁrst-order reaction kinetics. Complete removal of aqueous MB was realized after visible light Thin ﬁlm semiconductor irradiation for 150 min with Cu Se thin ﬁlm catalyst in presence of H O . Thermoelectric perform- 2−X 2 2 Galvanic synthesis ances through power factor and ﬁgure of merit have been evaluated. Carrier concentration obtained Photocatalytic property Thermoelectric property from thermoelectric
Applied Surface Science – Elsevier
Published: Apr 30, 2016
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