Papers by Keyword: Platinum Electrode

Abstract: This paper studies the degradation of herbicide atrazine. It was degraded by three-dimension-electrode electrochemical oxidation, which platinum was used as cathode and anode, and activated carbon was used as packed material and adsorbent. The effect of input current, initial pH, electrolyte concentration and solution temperature on degradation efficiency of atrazine was discussed. The results showed that atrazine can be effectively degraded by three-dimension-electrode electrochemical oxidation. The optimal conditions of operation are as follows: input current is 30mA, initial pH is 4, solution temperature is 20°C, and electrolyte concentrations is 0.10mol/L. Under the optimal conditions, degradation efficiency of atrazine can reach more than 99%, and the degradation rate is highest.

Abstract: Through screen-printing technology, we prepared heater which is used for planar oxygen sensor with YSZ solid electrolyte, alumina insulating layer and platinum(Pt) paste, then sintered at different temperatures.Analysis the properties of Pt electrode through aging time test and thermal shock test. The results show that 1100°C is the best sintering temperature for Pt electrode.Resistance and surface morphology of Pt electrode changed obviously with aging time increasing and 100 times thermal shock is not enough to affect the morphology of electrode and the change of resistance has no regularity.

Abstract: This paper studies the residual stress distributions and tip deflections of microfabricated bilayer cantilevers of varying beam thickness and platinum electrode length. The bilayer cantilevers discussed here are composed of low-stress silicon nitride films deposited on silicon beams. Platinum electrodes are deposited and patterned on the low-stress silicon nitride layers. A thermal elastic-plastic finite element model is utilized to calculate the residual stress distribution across the cantilever cross-section and to determine the cantilever tip deflection following heat treatment. A contact model is introduced to simulate the influence of contact on the residual stress distribution. The influences of the beam thickness and the platinum electrode length on the residual stress distribution and tip deflections are thoroughly investigated. The numerical results indicate that a smaller beam thickness leads to a larger compressive residual stress within the platinum electrode and delivers a larger tip deflection. The results also indicate that a larger platinum electrode length delivers a smaller tip deflection.