DEVELOPMENT OF DOPED ZnO AND IRON PHTHALOCYANINE DERIVATIVE MATERIAL WITH PHOTOCATALYTIC ACTIVITY FOR ENVIRONMENTAL APPLICATIONS
Project no. 583 · Status: Kapanmış · 2016
Summary
It is well known that the optical and electrical behaviours of semiconductor materials can easily be manipulated by incorporation of impurity atoms in their crystal structures. In this project, the structural, optical and photocatalytic properties of zinc oxide materials doped with nitrogen and boron elements in new, easy and effective mechanochemical method and in ratios of 1-5% (B: ZnO and N: ZnO) have been investigated. The produced semiconductor photocatalysts were characterized using X-ray diffractometry (XRD) and diffuse reflectance spectrophotometer (DRS) with UV-Vis. XRD analysis shows that the samples crystallize in hexagonal wurtzite structure. The Kubelka-Munk transformed DRS spectra of semiconductors have shown that there is no significant change in optical band gaps. 4% doped ZnO photocatalysts synthesized with the most successful photocatalytic activity were tested on the degradation of the organic contaminant of Rhodamine B. Photodegradation efficiency calculations and spectroscopic measurement results showed parallelism. N doping enhances the photocatalytic activity of ZnO, while B doping decreases. On the other hand, iron derivatives of tetra substituted acid and ester group phthalocyanine were obtained in the peripheral position and their structures were defined by FTIR, UV-Visible, NMR and Mass spectroscopy methods and their solubilities were determined. The ester substituent has opened up a new field for optoelectronic systems with the feature that the derivative of phthalocyanine can form a good film in the solid phase while the solubility of the phthalocyanine derivative in the organic solvents is greatly increased, while the acid derivatives have low solubility in organic solvents.