Faculty Publications
Permanent URI for this communityhttps://idr.nitk.ac.in/handle/123456789/18736
Publications by NITK Faculty
Browse
Search Results
Item Surface plasmon resonance sensor using polypyrrole-chitosan/graphene quantum dots layer for detection of sugar(Institute of Physics Publishing helen.craven@iop.org, 2019) Sadrolhosseini, A.R.; Abdul Rashid, S.; Jamaludin, N.; Bin Muhammad Noor, A.S.M.; Isloor, A.M.The Polypyrrole-chitosan/graphene quantum dots nanocomposite layer was prepared by using electrochemical deposition on the surface of gold-coated glass. The prepared layer was used to detect and measure the low concentration of glucose, fructose, and sucrose, using the surface plasmon resonance sensor. X-ray diffraction spectroscopy, and field emission scanning electron microscopy confirmed the GQDs as being formed in the composite layer. The thickness of the polypyrrole-chitosan/graphene quantum dots composite layer was in the range of 10.2 nm to 46.5 nm. The sensitivity of the sensor for glucose detection was higher than fructose and sucrose. The sensor limit and the response time were about 1 ppm and 320 s, respectively. © 2019 IOP Publishing Ltd.Item Experimental and molecular modeling of interaction of carbon quantum dots with glucose(Springer Verlag service@springer.de, 2019) Sadrolhosseini, A.R.; Abdul Rashid, S.A.; Jamaludin, N.; Isloor, A.M.Carbon Quantum Dots are a 0D dimension nanomaterial and they have promising properties, such as fluorescence. In this study, the carbon quantum dots were derived from biochar. The prepared sample was characterized using a UV–visible spectrometer, Fourier transform infrared spectroscopy, and fluorescence spectroscopy, and the morphology was investigated using a high-resolution transmission electron microscopy image. The linear and nonlinear refractive indies were obtained from a UV–visible spectrum and a Z-scan signal. The carbon quantum dots were combined with glucose, and then the variation between the fluorescence spectrum and response time were investigated. The interaction of the carbon quantum dots with the glucose was simulated using density functional theory for finding the stable molecular in the lower energy. Consequently, the carbon quantum dots interacted with the glucose in van der Waals bonding. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.