Silicate sol–gel stabilized silver nanoparticles for sensor applications toward mercuric ions, hydrogen peroxide and nitrobenzene
作者： Perumal Rameshkumar , Perumal Viswanathan , Ramasamy Ramaraj
DOI: 10.1016/J.SNB.2014.06.069
关键词:
摘要: Abstract Here, we developed a silver nanoparticles (Ag NPs) based sensor for the detection of mercuric ions (Hg(II)), hydrogen peroxide (H2O2) and nitrobenzene. The silicate sol–gel (SSG) stabilized Ag NPs were synthesized via one-pot synthetic route using mixture hydrazine, ammonium chloride nitric acid as reduction solution. further characterized by absorption spectra, XRD, SEM, TEM, EDX SAED analyses. spectral colorimetric methods revealed efficiency to detect Hg(II) lowest limit was found be 5 μM. Also, exhibited selectivity toward in presence other environmentally relevant heavy metal ions. For H2O2, an enzymeless electrochemical prepared modifying glassy carbon electrode with SSG NPs. Using linear sweep voltammetry (LSV) differential pulse (DPV) techniques, experimental limits H2O2 sensing 0.5 0.1 μM, respectively. Similarly, nitrobenzene modified identified have 1 μM square wave (SWV).
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