AI Article Synopsis
- Graphene sheets were modified with nickel or copper oxides and polyaniline, creating new materials for detecting methanol through a straightforward electrochemical method.
- * The sensors demonstrated strong electrocatalytic activity, with a dynamic range of 20-1300 mM for methanol and high sensitivity without interference from ethanol or other alcohols.
- * This research presents an innovative and cost-effective alternative to traditional precious metal sensors for identifying methanol in potentially counterfeit alcoholic drinks.
Article Abstract
Graphene sheets decorated with nickel or copper oxides that were anchored on polyaniline (denoted as PANI-graphene/NiO and PANI-graphene/CuO) were prepared by a simple, easy to-control electrochemical method and applied as novel materials for sensitive and selective methanol sensing. The fabricated sensors exhibited good electrocatalytic activity, appropriate dynamic linear range (20-1300 mM), sensitivity (0.2-1.5 μA mM cm) and excellent selectivity towards methanol. It should be highlighted from the selectivity tests that no significant interference was observed from ethanol and other alcohols. To our best knowledge, using inexpensive but efficient transition metals like Ni, Cu instead of Pt, Pd and their composites with PANI, graphene would be scientifically novel and practically feasible approach for sensor fabrication that could be potentially used to identify methanol adulteration in counterfeit alcoholic beverages.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9038141 | PMC |
| http://dx.doi.org/10.1039/d1ra04164a | DOI Listing |
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