Gold nanoparticles for sensing Mn2+ in water

Krishna Sarma, Devabrata Sarmah, Sunandan Baruah

Abstract


Abstract: Gold nanoparticles coated with polymers like chitosan, polyvinyl alcohol (PVA), polyvinyl pyrrolidone (PVP) and poly acrylic acid (PAA) can effectively be used to detect the presence of Mn2+ ions in water. A shift in the optical absorbance peak of the Au colloid is observed in the presence of Mn2+ ions. The shift in the absorbance peak wavelength is directly proportional to the concentration of Mn2+ ions in water. Chitosan capping was found to give the maximum shift and as such was selected for the development of a sensor for detecting Mn2+ ions in water. The variation in photo-energy of the photons after passing through the colloidal dispersion of chitosan coated Au nanoparticles varies the conductivity of the detector and this can be related to the concentration of the Mn2+ ions in water. Two different detectors were tested, a nanosensor and a light dependent resistor, with the latter demonstrating better response.

 


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References


Reference:

.T.M. Ansari, I.L. Marr and N. Tariq, “Heavy Metals in Marine Pollution Perspective”–A Mini Review,Journal of Applied Sciences, Volume 4 (1):-20, 2004.

.

https://www.mrwa.com/WaterWorksMnl/Chapter%2014%20Iron%20and%20Manganes...” Iron and Manganese Removal”

Applications including sensors, photo catalysis and solar cell.

N.J Langford and R.E.Ferner, “Toxicity of Mercury” Journal of Human Hypertension, vol. 13, pp. 651-656 1999.

R.A. Goyer, “Lead Toxicity: Current concerns”, Environmental Health Perspectives, vol. 100, pp. 177-187, April, 1993.

A.K .Tareen, ImranaNiaz Sultan, Pramuk, Parakulsuksaid, Mohammod Shafi, Asraf Khan, Mohammod Waseem Khan and Saradt Hussain,“Detection of heavy metals (Pb, Sb, Al, AS) through atomic absorption spectroscopy from Drinking water at District Pishin, Balochistan, Pakistan”, International Journal of current Microbiology and Applied Science, vol. 3, pp. 299-308, 2014.

http://www.intechopen.com/books/plasmonics-principles-and-applications/plasmonic-conducting-polymers-for-heavy-metal-sensing downloaded on 22 April 2015.

Yu-Lun Hung ,Tung- Ming Hsiung ,Yi-you Cheng Y, Yu Fen Huang and Chih-Ching Huang , “Colorimetric Detection of Heavy Metal Ions using Label Free Gold Nanoparticles and Alkanethiols”,The Journal of Physical Chemistry C , vol. 114, pp. 16329-16334, 2010.


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