What is it about?
Green and biogenic synthesis of positively charged gold nanoparticles. Detection of hydrogen peroxide using positively charged gold nanoparticles. Colormetric method of hydrogen peroxide detection
Featured Image
Why is it important?
Visual detection and simple
Perspectives
This study provides a simple, fast, and sensitive colorimetric method for the detection of H2O2 in the linear range from 1.0 × 10−3 to 2.5 × 10−3 M. The (+)AuNPs possessed extraordinary intrinsic peroxidase-like activity (peroxidase mimic) compared to citrate-capped negatively charged AuNPs. This approach to the colorimetric detection of H2O2 is novel and simple because it uses positively charged gold nanoparticles, which may provide new areas for further research.
Professor Mohammad Mansoob Khan
Universiti Brunei Darussalam
Read the Original
This page is a summary of: Positively Charged Gold Nanoparticles for Hydrogen Peroxide Detection, BioNanoScience, January 2018, Springer Science + Business Media,
DOI: 10.1007/s12668-018-0503-x.
You can read the full text:
Resources
Positively Charged Gold Nanoparticles for Hydrogen Peroxide Detection
This paper reports the synthesis of positively charged gold nanoparticles [(+)AuNPs] for the colorimetric detection of hydrogen peroxide (H2O2). (+)AuNPs were synthesized using an electrochemically active biofilm in an aqueous solution, which is a novel, simple, and green approach. The as-synthesized (+)AuNPs were characterized by ultraviolet-visible (UV-Vis) spectroscopy, dynamic light scattering (DLS), X-ray diffraction (XRD), transmission electron microscopy (TEM), and high-resolution TEM (HRTEM). UV-Vis spectroscopy confirmed the synthesis of AuNPs and DLS showed that the as-synthesized AuNPs had a charge of +32.72 mV. XRD confirmed the formation of AuNPs as well as the purity, crystallinity, and fcc structure. TEM and HRTEM showed that (+)AuNPs were 15–21 nm in size and spherical in shape. The as-synthesized (+)AuNPs were used for the colorimetric detection of H2O2 using 3,3,5,5-tetramethylbenzidine dihydrochoride. This study provides a simple, fast, and sensitive colorimetric method for the detection of H2O2 in the linear range from 1.0 × 10−3 to 2.5 × 10−3 M. The (+)AuNPs possessed extraordinary intrinsic peroxidase-like activity (peroxidase mimic) compared to citrate-capped negatively charged AuNPs. This approach to the colorimetric detection of H2O2 is novel and simple because it uses positively charged gold nanoparticles, which may provide new areas for further research.
Positively Charged Gold Nanoparticles for Hydrogen Peroxide Detection
Gold Nanoparticles for Hydrogen Peroxide assay
Contributors
The following have contributed to this page
