hrvatski

Photoelectrochemical Properties of WxTi1-xO2 thin films for Water Treatment

Many approaches have been devoted to improve photoelectrochemical (PEC) and photocatalytic efficiency of TiO2 due to its intrinsic drawbacks like wide band gap and fast photogenerated charge recombination. In this work, a series of transparent thin films (WxTi1-xO2) are obtained by anodizing co-sputtered tungsten-titanium in different atomic ratios on FTO glass substrates in ethylene glycol solution containing 0.6 wt% NH4F. The thin films were characterized by different techniques. The incorporation of W slightly decreased the band gap of WxTi1-xO2. The thin film with 1%W showed the maximum photocurrent. PEC results also revealed that the charge recombination decreased with increasing the ratio of W. Moreover, PC activity was evaluated by degradation of methylene blue solution at different pH which higher pH showed enhanced removal rate.

WxTi1-xO2 ; magnetron co-sputtering ; Photoelectrochemical ; Photocatalyst ; Water treatment

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