Next Article in Journal
Assessment of the Condition of Wharf Timber Sheet Wall Material by Means of Selected Non-Destructive Methods
Next Article in Special Issue
Improved Method for Measuring the Permeability of Nanoporous Material and Its Application to Shale Matrix with Ultra-Low Permeability
Previous Article in Journal
The Addition of Poly(Vinyl Alcohol) Fibers to Apatitic Calcium Phosphate Cement Can Improve Its Toughness
Previous Article in Special Issue
Effects of the Limestone Particle Size on the Sulfation Reactivity at Low SO2 Concentrations Using a LC-TGA
Open AccessArticle

Colorimetric Detection of Mercury Ions in Water with Capped Silver Nanoprisms

1
Department of Zoology, Government College University, Lahore 54000, Pakistan
2
Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
*
Author to whom correspondence should be addressed.
Materials 2019, 12(9), 1533; https://doi.org/10.3390/ma12091533
Received: 29 March 2019 / Revised: 6 May 2019 / Accepted: 7 May 2019 / Published: 10 May 2019
(This article belongs to the Special Issue Micro/Nano Materials for Clean Energy and Environment)
The emission of mercury (II) from coal combustion and other industrial processes may have impacts on water resources, and the detection with sensitive but rapid testing methods is desirable for environmental screening. Towards this end, silver nanoprisms were chemically synthesized resulting in a blue reagent solution that transitioned towards red and yellow solutions when exposed to Hg2+ ions at concentrations from 0.5 to 100 µM. A galvanic reduction of Hg2+ onto the surfaces is apparently responsible for a change in nanoprism shape towards spherical nanoparticles, leading to the change in solution color. There were no interferences by other tested mono- and divalent metal cations in solution and pH had minimal influence in the range of 6.5 to 9.8. The silver nanoprism reagent provided a detection limit of approximately 1.5 µM (300 µg/L) for mercury (II), which compared reasonably well with other reported nanoparticle-based techniques. Further optimization may reduce this detection limit, but matrix effects in realistic water samples require further investigation and amelioration. View Full-Text
Keywords: nanoparticles; nanoplates; spectral blue shift; amalgam; water quality nanoparticles; nanoplates; spectral blue shift; amalgam; water quality
Show Figures

Figure 1

MDPI and ACS Style

Tanvir, F.; Yaqub, A.; Tanvir, S.; An, R.; Anderson, W.A. Colorimetric Detection of Mercury Ions in Water with Capped Silver Nanoprisms. Materials 2019, 12, 1533.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop