Deposition of ZnO-Valinomycin Film on Al Substrate for the Detection of K+ in KOH Solution
Chemically synthesized Nanocrystalline ZnO with valinomycin was deposited on Al substrate by modified chemically wet and dry (CWD) method. The lattice parameters a and c of ZnO are estimated to be 3.258 Å and 5.183 Å with an average crystallite size of 60 nm. The micrograph and energy dispersive X-ray spectrum analysis clearly indicates that ZnO is embedded in the valinomycin fibres. The ohmic character and non-magnetic character of the films is confirmed from the electrical and frequency dependent inductance characterisation. It is found that at higher frequency, impedance of the film does not depend upon the resistance and inductance. Hence the capacitance behaviour of the film is improved. The potassium sensing ability of the ZnO embedded valinomycin has a life time of 20 days which predicts that this organic polymer embedded ZnO can be used as a K+ detect biosensor.
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Document Type: Short Communication
Publication date: March 1, 2014
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- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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