Gold Coated Nanostructured Molybdenum Oxide Mercury Vapour Quartz Crystal Microbalance Sensor

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A novel mercury vapour sensor based on a quartz crystal microbalance has been developed using gold coated nano templates of molybdenum oxide. The molybdenum oxide layer was characterised using scanning electron microscopy and X-ray diffraction methods. Characterization data revealed that the molybdenum oxide nano templates consisted of hexagonal platelets which are an orthorhombic form of molybdenum oxide. Gold was used as a selective layer due to its high affinity to mercury and inertness to interfering gases. The sensor had a mercury response approximately 85% larger than that of a commercial gold sensor.


Document Type: Research Article


Publication date: February 1, 2008

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