Effect of Rotational Speed Variation with Spin Coating Method on pH Sensor Performance Based on Titanium Dioxide (TiO2)
Eka Maulana, Novvy Nurdiana Dewi, Onny Setyawati
The thick layer deposition of TiO2:AgCl on the alumina substrate by using spin coating method for pH sensor application has been done. Part of pH sensor in this investigation is electrode and sensing area, the electrode material is AgCl and the material were made to sensing area is TiO2. AgCl paste and TiO2 paste was made by mixing binder solution (PVA) with AgCl powder and TiO2 powder which stirrer with magnetic stirrer that the mixture became homogenous paste. The AgCl material were deposed to alumina substrate at various rotational speed spin coating 300 rpm, 500 rpm, 700 rpm, 1000 rpm, 1500 rpm, and the TiO2 material were deposed to alumina substrate at rotational speed spin coating 300 rpm. The result of sensor voltage showed that rotational speed spin coating effect on sensor output voltage. The sensor repeatability result showed that was used of sensors repeatedly resulted in decreased sensor performance. This proves that the materials used make the sensor ineffective for reusable sensors. The sensitivity result of 1000 rpm and 1500 rpm sensors, showed that the optimum sensitivity is 1000 rpm sensor with -41,07 mV/pH. In the calculation of error analysis showed that the pH sensor has the best uncertainly is 1500 rpm sensor that is 0,5484%.
| Status: | Published |
| Published in: | Sustainable Information Engineering And Technology For Sustainable Environment And Green Technology (SIET 2017), 24-25 November 2017, Batu. Scopus indexed [IEEE Xplore]. |
| Link: | http://siet.ub.ac.id/ |