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Hg(II) Ion Detection Using Thermally Reduced Graphene Oxide Decorated with Functionalized Gold Nanoparticles
Abstract
Fast and accurate detection of aqueous contaminants is of significant importance as these contaminants raise serious risks for human health and the environment. Mercury and its compounds are highly toxic and can cause various illnesses; however, current mercury detectors suffer from several disadvantages, such as slow response, high cost, and lack of portability. Here, we report field-effect transistor (FET) sensors based on thermally reduced graphene oxide (rGO) with thioglycolic acid (TGA) functionalized gold nanoparticles (Au NPs) (or rGO/TGA-AuNP hybrid structures) for detecting mercury(II) ions in aqueous solutions. The lowest mercury(II) ion concentration detected by the sensor is 2.5 × 10(-8) M. The drain current shows rapid response within less than 10 s after the solution containing Hg(2+) ions was added to the active area of the rGO/TGA-AuNP hybrid sensors. Our work suggests that rGO/TGA-AuNP hybrid structures are promising for low-cost, portable, real-time, heavy metal ion detectors.
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Citations
Cited by
Environmental applications of graphene-based nanomaterials
Perreault, F., Fonseca de Faria, A., & Elimelech, M. (2015) · Chemical Society Reviews · doi:10.1039/c5cs00021a · Cited by 1,528
A review on detection of heavy metal ions in water—An electrochemical approach
Gumpu, M. B., Sethuraman, S., Krishnan, U. M., & Rayappan, J. B. B. (2015) · Sensors and Actuators B: Chemical · doi:10.1016/j.snb.2015.02.122 · Cited by 1,027
Chang, H., & Wu, H. (2013) · Energy & Environmental Science · doi:10.1039/c3ee42518e · Cited by 549
Graphene oxide and reduced graphene oxide-based scaffolds in regenerative medicine
Raslan, A., Saenz del Burgo, L., Ciriza, J., & Pedraz, J. L. (2020) · International Journal of Pharmaceutics · doi:10.1016/j.ijpharm.2020.119226 · Cited by 258
Metadata
- Authors
- Chen, K., Lu, G., Chang, J., Mao, S., Yu, K., Cui, S., & Chen, J.
- Venue
- Analytical Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-04-20
- Volume
- 84
- Issue
- 9
- Pages
- 4057-4062
- ISSN
- 0003-2700 (ISSN-L)
- 1520-6882
- OpenAlex
- W2039939706
- Cited by
- 253
- References
- 0
- FWCI
- 13.77
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chen, K., Lu, G., Chang, J., Mao, S., Yu, K., Cui, S., & Chen, J. (2012). Hg(II) Ion Detection Using Thermally Reduced Graphene Oxide Decorated with Functionalized Gold Nanoparticles. Analytical Chemistry. https://doi.org/10.1021/ac3000336
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