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Information × Registration Number 0221U107274, 0118U006175 , R & D reports Title Development of intelligent sensory system with sensing elements based on hybrid conducting nanocomposites for the registration of environmentally harmful volatile compounds. Section 1. Development, manufacturing and optimization of new sensing materials on the basis of conducting hybrid nanocomposites. popup.stage_title Head Pud Oleksandr A., Доктор хімічних наук Registration Date 30-12-2021 Organization V.P. Kukhar Institute of Bioorganic Chemistry and Petrochemistry of the National Academy of Sciences of Ukraine popup.description2  The dependence of sensory characteristics of thin layers of the nanocomposites based on natural material halloysite and polyaniline (PANI) on the conditions of layer formation has been studied, namely on the type of solvent, dispersion concentrations, durations of ultrasonic treatment of the dispersions, a method of electrode application, a time of layer formation, etc. It has been found that the maximum intensity and quality of sensory responses to VOCs (acetone, isopropanol) are obtained by sequential multiple application of the layers of 1 wt.% dispersion of nanocomposites in ethanol according to a Layer by Layer method. At the same time a classical method of a layer application of 2 wt.% dispersion in chlorobenzene has been found to be the best one when determining ammonia. The optimal durations of ultrasonic treatment of the dispersions of nanocomposites, volumes of their drops for application, drying / formation time for the most efficient sensor layers with a PANI content of 7.0 wt% and 15.8 wt% have been determined. The standardized techniques have been developed and worked out for their manufacture depending on the target analyte. Calibration curves for acetone and isopropanol in the range of 100 ppm - 5000 ppm, for ammonia - 2 ppm - 100 ppm. Product Description popup.authors Myronyuk Iryna Ye. Noskov Yuriy V. popup.nrat_date 2022-03-09 Close