Surfactant-Free Facile Synthesis of Ag/rGO Nanohybrid for SERS-Based Detection of Melamine
Source abstract
Abstract
Surfactant-free silver nanoparticle-loaded reduced graphene oxide (Ag/rGO) nanohybrids have the potential for fabricating efficient SERS-based sensors. Using surfactants in the synthesis of Ag/rGO nanohybrid often passivates the SERS activity and produces interference in the intrinsic Raman signal of the analytes. And also, the chemical-reducing agents used to synthesize Ag/rGO nanohybrid are toxic and not eco-friendly. Therefore, in this work, we have synthesized a stable Ag/rGO nanohybrid without the aid of a surfactant and toxic reducing agent. The Ag/rGO nanohybrid SERS substrate is tested for the detection of melamine in the range of 1 × 10−3 to 1 × 10−8 M in H2O. The characteristic Raman peak intensity was found to vary linearly with respect to melamine concertation with a correlation coefficient of 0.94 and the enhancement factor is 8.4 × 106. SERS analysis on milk extract could detect 1 × 10−6 M melamine adulteration, one order better than the allowable limit of 2.0 × 10−5 M.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Melamine detection and toxicity · Gold and Silver Nanoparticles Synthesis and Applications · Mercury impact and mitigation studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (54)
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