Amperometric nitric oxide gas sensor: preparation of Au/SPE and sensing behavior

Amperometric NO gas sensor in the presence of diffusion barrier: selectivity, mass transfer of NO and effect of temperature

“…Hence, it is very important for the environmental conservation to monitor the level of nitric oxide in the atmosphere. The chemiluminescene method [1] and electrochemical sensors [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] can monitor the concentration of nitric oxide in the gas phase.…”

“…Three types of electrochemical methods are used to monitor the concentration of nitric oxide: the conductimetric [2,3,15], potentiometric [4,15] and amperometric [5][6][7][8][9][10][11][12][13][14][15][16][17] gas sensors. Au/solid polymer electrolyte (Au/SPE) prepared by the chemical plating method is used as a working electrode for assembling the amperometric nitric oxide gas sensor [16].…”

“…Au/solid polymer electrolyte (Au/SPE) prepared by the chemical plating method is used as a working electrode for assembling the amperometric nitric oxide gas sensor [16]. The characteristics of Au/SPE and the sensing behavior of amperometric nitric oxide are systematically studied [17].…”

“…The selectivity and the effect of temperature on the mass transfer of nitric oxide in the amperometric nitric oxide gas sensor are also investigated. Gold was deposited on Nafion 1 (117) by TakenakaTorikai (T-T) chemical plating method [16,17]. The loading of Au and the electroactive area of Au/Nafion 1 were discussed elsewhere [16][17][18].…”

“…Gold was deposited on Nafion 1 (117) by TakenakaTorikai (T-T) chemical plating method [16,17]. The loading of Au and the electroactive area of Au/Nafion 1 were discussed elsewhere [16][17][18]. The PTFE films with pore sizes of 0.2 mm (Advantec MFS, SIERAA CD65), 1.0 mm (MSI, WESTBORO 82291), 5.0 mm (MSI, WESTBORO 76121) and 10.0 mm (MSI, WESTBORO 83634) were used as diffusion barriers covered on the working electrode (Au/ Nafion 1 ).…”