Development of coated-wire silver ion selective electrodes on paper using conductive films of silver nanoparticles

Abstract

Films of silver nanoparticles are used for the first time as an electrical conductor and ion-to-electron transducer to fabricate coated-wire ion selective electrodes (ISEs) on paper. The film of nano silver ink (nano silver film), synthesized from the reduction of AgNO3 by NaBH4, was screen printed on paper. Transmission electron microscopy showed that the synthesized silver nanoparticles (AgNPs) possessed a spherical shape with diameter ca. 5 nm. Energy-dispersive X-ray spectroscopy supported the purity and good stability of the synthesized AgNPs. Nano silver films were sintered at room temperature, 100 °C and 200 °C. Upon increasing the sintering temperature, atomic force microscopy showed that the size of AgNPs of nano silver films increased, but the sheet resistivity decreased. Silver ISEs were then fabricated from nano silver films and o-NPOE-plasticized polymeric membranes containing benzothiazolyl calix[4]arene () as ionophore and KTpClPB as anionic site. The performance of the developed Ag-ISEs was investigated by potentiometric measurements, potentiometric water layer tests, current reversal chronopotentiometry and electrochemical impedance spectroscopy. The coated-wire electrode fabricated from the nano silver film sintering at room temperature showed the best characteristics of Ag-ISEs giving a near Nernstian response slope of 59.7 ± 1.0 mV per decade, 10(-6) to 10(-2) M linear range, detection limit of 4.5 × 10(-7) M, long-term potential stability and good reversibility.

Direct-writing of circuit interconnects on cellulose paper using ultra-long, silver nanowires based conducting ink

“…50 The paper based substrates are commonly available, cost effective, environment friendly, recyclable, lightweight and can be tailor made into any 3D congurations. 10,[51][52][53] Among various printing techniques, direct-writing approach is a simple and cost-effective method for constructing desired conductive patterns on paper based substrates for various exible electronics applications by a single-step process. To draw such hybrid printed paper electronics circuits on paper substrates, it is necessary to make low resistance electrical interconnects between the conductive components.…”

Simple Determination of Silver Nanoparticles Concentration as Ag+ by Using ISE as Potential Alternative to ICP Optical Emission Spectrometry

“…Recently, different uses for the ion selective silver electrode have been proposed both in chemical and biological fields and the present work could contribute to confirm its reliability and enlarge its application range.…”

Silver Selective Electrode Based on Hybrid Mesoporous Silica (MCM‐41) Modified Material

“…9), and has lower detection limit of 1.0 × 10 À 9 M. The increasing the concentration of ionophore, plasticizer and NaTBP do not have significant effect on linear concentration range, LOD and slope of calibration curve (electrode no. 10,11,12,13,14). Hence the electrode no.…”

“…Several methods including flame atomic absorption spectrometry (FAAS), inductively-coupled plasma mass spectrometry (ICP-MS), Voltammetry, and gravimetric etc. [6][7][8][9][10] have been used for the determination of silver in various samples, but all these methods are either time consuming, required large infrastructure and involving some sample manipulations. Several potentiometric silver selective electrodes based on PVC membrane or carbon paste electrodes have been constructed by different workers, however most of these reported electrodes have narrow concentration range, high detection limit; slow response mechanism [11][12][13][14][15].…”