Abstract
Zinc oxide nanorods were grown over cellulose fibers by a double step chemical bath deposition process. In the first step, the formation of ZnO seeds layer on cellulose fiber surfaces was induced by the alkaline hydrolysis of aqueous Zn(II). In the second step, growth of ZnO seeds into larger nanoparticles followed by growth of ZnO nanorods was achieved by controlled hydrolysis of Zn(II)-amine complex. The ZnO-cellulose nanocomposite was obtained in form of a white crystalline powder. The electrical properties of the above powder was studied making pellets with hydraulic press machine. Photoconductivity of the above ZnO-cellulose nanocomposite changed when it was exposed to Ultraviolet (UV) light. A higher UV photoconductivity was observed in ZnO-cellulose nanocomposites compared to that observed in case of ZnO nanorods. The above observations show that our ZnO-cellulose can be used for fabrication of ultra-high ON to OFF ratio UV sensors.
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