A real-time comparison of mercury accumulation on noble metal thin films using gravimetric device

Kabir, K, Kandjani, A, Harrison, C, Ippolito, S, Sabri, Y and Bhargava, S 2016, 'A real-time comparison of mercury accumulation on noble metal thin films using gravimetric device', Superlattices and Microstructures, vol. 100, pp. 1151-1158.


Document type: Journal Article
Collection: Journal Articles

Title A real-time comparison of mercury accumulation on noble metal thin films using gravimetric device
Author(s) Kabir, K
Kandjani, A
Harrison, C
Ippolito, S
Sabri, Y
Bhargava, S
Year 2016
Journal name Superlattices and Microstructures
Volume number 100
Start page 1151
End page 1158
Total pages 8
Publisher Academic Press
Abstract We simultaneously compared and analyzed the mercury sorption and sensing performance of gold, silver, palladium and platinum using quartz crystal microbalance (QCM). Overall, the Au- and Ag-QCM showed superior Hg sensing performance over the Pd- and Pt-counterparts when tested toward a range of concentrations (24-365 ppb v ) at various operating temperatures (35-105 °C). However, it was also found that the Hg sensing performance of each metal varied significantly with the operating temperature and is dependent on the concentration tested. For instance, the Ag-QCM exhibited 57% higher response magnitude than the Au-QCM when exposed toward 24 ppb v of Hg 0 vapor at 35 °C; however, the opposite trend was observed when the same concentration of Hg 0 vapor was tested at 105 °C, with Au-QCM showing 104% higher response magnitudes compared to the Ag-QCM. Moreover, the Ag-QCM showed higher response magnitudes than the Au-QCM for exposure toward 365 ppb v of Hg 0 vapor regardless of the operating temperature.
Subject Sensor Technology (Chemical aspects)
Environmental Nanotechnology
Keyword(s) Amalgamation
Elemental mercury vapor
Gold
Mercury
Noble metals
Palladium
Platinum
Quartz crystal microbalance
Silver
DOI - identifier 10.1016/j.spmi.2016.10.084
Copyright notice © 2016 Elsevier
ISSN 0749-6036
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