Journal
ELECTROANALYSIS
Volume 29, Issue 5, Pages 1434-1442Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201600775
Keywords
Electrochemical sensor; Silver nanospheres; Nitrite; Green synthesis; pre-hydrolysed liquor
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Funding
- TEQIP-II (Technical Education Quality Improvement Programme, Centre of Excellence in Advanced Materials Research) of BMS College of Engineering, Bangalore
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Silver nanospheres (AgNS) with SPR band approximate to 417nm was synthesized by Green synthesis, using a pre-hydrolysed liquor (PHL) of Nilgiri wood without any pretreatment. The synthesis was carried out at room temperature and was complete within three hours. The reduction and stabilization of silver is brought about by hemicelluloses present in the pre-hydrolysed liquor. Electrochemical oxidation of nitrite on glassy carbon electrode (GCE) modified with the AgNS in 0.1M phosphate buffer solution (PBS) of pH7.0 was found to occur at 0.86 V with respect to Ag/AgCl. Electrochemical sensing experiments with AgNS/GCE showed a linear range of detection between 0.1 to 8 M, with detection limit of 0.031 M and a sensitivity of 580 A mM(-1)cm(-2).
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