Graphene oxide (GO)

Graphene oxide (GO)

The present research study, ITO/TiO2 thin films are prepared on glass substrate by using e-beam evaporation system at different annealing temperatures (300, 350, 400 and 450 ºC). The amorphous and crystalline natures of ITO/TiO2 structure was analysed by X-ray diffraction study. As the grain size becomes larger, indirectly it will develop the crystalline quality of the TiO2 films studied from AFM. The surface of TiO2 films and the crystallite size of the sample are increased gradually with respect to temperature which is observed in SEM. The elemental composition determined by the energy dispersive analysis of EDAX showed that TiO2 thin films were highly stoichiometric. The grain size and average slope of 1/f noise were increased with an increasing annealing temperature. Further, the higher optical transmittance (~93%) was obtained with 450 ºC annealed ITO/ TiO2 film. The optical band gap was increases corresponding annealing temperatures (300, 350, 400 and 450 ºC). All the above results of this present work can be utilized for solar cell and optoelectronic device applications.

Glassy carbon electrode modified sensitive Pd-CuO/MWCNTs electrochemical nanosensor was used for detection of ametridione pesticide in water samples. The morphology characteristics of Pd-CuO/MWCNTs are examined by scanning electron microscopy and EDX. The ametridione pesticide under voltammetric investigation involves irreversible, 4e? electron reduction based on the protonation of the two carbonyl groups (>C=O). The voltammetric method was applied for the detection of ametridione in BR buffer solution at pH 5.0 as a supporting electrolyte. The detection limit, limit of quantification and concentration ranges of the proposed method were 0.0796 ?g?mL?1 (signal/noise=3), 0.5560 ?g?mL?1 and 0.1 to 10.0 ?g?mL?1, respectively. The electrochemical sensor was successfully applied for the detection of ametridione in tap, agricultural run-off and river water samples showing >98% mean recoveries.