![]() ![]() Hence here we give the detailed description on the recent developments of glucose sensors based on noble metal nanoparticles and real-time applications for the detection. Thus, gold-silver core-shell nanoparticles (NPs) were prepared with different shell thicknesses in a two-step chemical process without the use of any. Though various nanoparticles are available in earlier reports, this book chapter is mainly focused on noble metal (Ag, Au) nanoparticles as glucose sensors for detecting the desired bioanalyte of interest due to its distinctive properties. en Simple strategies for producing silver and gold nanoparticles (AgNP and AuNP) along with the corresponding core shell nanoparticles (Au-Ag and Ag-Au). Various metal oxide nanoparticles such as CuO, La 2O 3, etc., and carbon-based materials are used for biosensing. Thin continuous silver shells of variable thickness were subsequently obtained by reducing controlled amounts of silver nitrate added in the gold sol. A series of methods have been developed to measure blood glucose levels such as non-enzymatic electrochemical detection, colorimetric detection, surface-enhanced Raman scattering (SERS), and fluorescence detection. The stabilizer-free gold core particles with an average diameter of 30 nm were first precipitated by rapid reduction of HAuCl (4) with l-ascorbic acid. Many efforts are made by humans toward synthesis of nonenzymatic glucose sensing materials mainly based on noble nanostructured materials such as Ag, Au, etc. Using the optical properties of metallic nanoparticles, surface plasmon resonance was determined by UV-Vis spectroscopy, and the values obtained for gold and silver were approximately 520 nm and 400 nm in wavelength, respectively. Even though tracking the glucose in diabetic patient is at peak and more sensing strips are available, researchers are mainly focused on developing nonenzymatic glucose sensor, whereas enzyme-based glucose sensor suffers from many drawbacks, such as high cost, pH value, humidity, temperature, and poor long-term stability. Gold nanoparticles were synthesized, and silver cations were then reduced on the nanoparticles. This number will increase to about 592 million by 2035. By 2014, there were about 422 million adults with diabetes globally. During last few decades environmental issues are at the topmost level around the world causing unfortunate health and energy-related problems. ![]()
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