New sensor uses graphene and MOFs to detect methanol poisoning

Researchers at the University of Adelaide have developed a simple, low-cost prototype sensor that quickly and easily detects small amounts of methanol in breath. This is a step toward developing a “methanol breathalyzer” to efficiently diagnose poisonings.

The team formulated a specialized electrically conductive ink that combined a zirconium-based metal-organic framework (MOF) and graphene. They then 3D-printed the ink onto a ceramic, creating the sensor. A machine created artificial breath by blending dry air with humid air containing methanol and then mimicked blowing the breath into a chamber containing the sensor. The prototype detected methanol at concentrations as low as 50 parts per billion (below the levels found in breath during methanol poisoning) and maintained its stability and performance after several repeated sensing cycles.

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