In the present paper we describe the development of a surface acoustic wave (SAW) ammonia sensor which utilizes the Rh2(form)4 complex as responding material. It has observed that the SAW resonance frequency shifted reversibly upwards upon NH3 exposures at room temperature. Moreover, the greater affinity of the Rh2(form)4 film coating for the N-Lewis bases guaranteed a selective binding capability towards NH3 in the presence of water vapour, allowing to monitor the concentration of ammonia gas in the head-space of aqueous solutions.
Transition metal complexes as ammonia responsive materials for SAW chemical sensors
LO SCHIAVO, Sandra;CARDIANO, Paola;DONATO, Nicola;LATINO, MARIANGELA;NERI, Giovanni
2011-01-01
Abstract
In the present paper we describe the development of a surface acoustic wave (SAW) ammonia sensor which utilizes the Rh2(form)4 complex as responding material. It has observed that the SAW resonance frequency shifted reversibly upwards upon NH3 exposures at room temperature. Moreover, the greater affinity of the Rh2(form)4 film coating for the N-Lewis bases guaranteed a selective binding capability towards NH3 in the presence of water vapour, allowing to monitor the concentration of ammonia gas in the head-space of aqueous solutions.File in questo prodotto:
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