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ABSTRACT
In the last few decades gold nanoparticles have become an intense topic of research due to it's eminent size and morphology dependent optical, chemical, physical and electrical properties. Gold nanoparticles show useful technological applications in the province of nanoelectronics, optoelectronics, chemical and biological sensors. Due to the size- and shape-dependent properties, synthesis of gold nanoparticles with various methods is still an important area of research.
Recent literature reports indicate that gold nanoparticles have vast biomedical applications such as biosensors, bio-imaging, targeted drug delivery and controlled drug release. Other than size and shape, the inter-particle distance dependent optical properties of gold nanoparticles have very interesting applications in the field of sensors. Gold nanoparticles show good selectivity and sensitivity for colorimetric identification of heavy toxic metal ions such as Hg2+, Cd2+, As3+, Pb2+ etc and various biomolecules. The concentration of such toxic metal ions in water can be identified by naked eye also.
Acknowledgements
VAD and RKG are highly thankful to Defence Institute of Advanced Technology (DIAT) for support and also thankful to our guide Dr R. B. Sharma for introducing us to the interesting world of Nanoscience and Nanotechnology.
Disclosure statement
No potential conflict of interest was reported by the authors.
Additional information
Notes on contributors
Vinayak A. Dhumale
Dr. Vinayak A. Dhumale, is presently working as Assistant Professor at MIT Art Design and Technology University, Pune. He obtained his MSc in Physics from Fergusson College, Pune and PhD from Defence Institute of Advanced Technology (Deemed University), Pune. His research interest includes fabrication of metal nanoparticles, antibacterial properties, sensors and biomedical applications.
Rajesh K. Gangwar
Dr. Rajesh K. Gangwar is presently working as Joint Director (Research) at Council of Science & Technology UP (DST, Govt. of UP), Lucknow (India). He obtained his MSc in Physics from M.J.P. Rohilkhand University Bareilly (U.P.) and PhD from Defence Institute of Advanced Technology, Pune (Maharashtra). His research interests include synthesis of nanomaterials, sensing & biomedical applications of nanomaterials, sensor and analysers.
Nishigandh Pande
Dr. Nishigandh S. Pande is presently working as Assistant Professor at Symbiosis Skills and Professional University, Pune. He obtained his MSc in Inorganic Chemistry from S. P. College (University of Pune) and PhD from Symbiosis International University, Pune. His research interests include synthesis of nanoparticles, energy storage devices, catalysis and sensor.