In Situ Growth of Surfactant-Free Gold Nanoparticles on Nitrogen-Doped Graphene Quantum Dots for Electrochemical Detection of Hydrogen Peroxide in Biological Environments

• Published in: Analytical chemistry (Washington) Vol. 87; no. 3; pp. 1903 - 1910
• Main Authors: Ju, Jian, Chen, Wei
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 03.02.2015
• Subjects: Adsorption; Biosensing Techniques - methods; Biosensors; blood serum; detection limit; Electrocatalysis; Electrochemical Techniques - methods; Electrochemistry; Fabrication; Gold; Gold - chemistry; Graphene; Graphite - chemistry; HeLa Cells; Human; Humans; Hydrogen peroxide; Hydrogen Peroxide - analysis; Hydrogen Peroxide - blood; Metal Nanoparticles - chemistry; Metal Nanoparticles - ultrastructure; mixing; Models, Molecular; nanocomposites; nanogold; Nanoparticles; Nanotechnology; neoplasm cells; Nitrogen; Nitrogen - chemistry; Quantum dots; Quantum Dots - chemistry; Quantum Dots - ultrastructure; reducing agents; Spectrum analysis; Surface chemistry; Surfactants; Transmission electron microscopy; uterine cervical neoplasms; X-ray diffraction; X-ray photoelectron spectroscopy

In this work, we report a green and simple strategy for the in situ growth of surfactant-free Au nanoparticles (Au NPs) on nitrogen-doped graphene quantum dots (Au NPs–N-GQDs). The formation of hybrid was achieved by just mixing the N-GQDs and HAuCl4·4H2O without addition of any other reductant and...