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Iodide-Mediated Etching of Gold Nanostar for the Multicolor Visual Detection of Hydrogen Peroxide.
- Source :
- Biosensors (2079-6374); Jun2023, Vol. 13 Issue 6, p585, 10p
- Publication Year :
- 2023
-
Abstract
- A multicolor visual method for the detection of hydrogen peroxide (H<subscript>2</subscript>O<subscript>2</subscript>) was reported based on the iodide-mediated surface etching of gold nanostar (AuNS). First, AuNS was prepared by a seed-mediated method in a HEPES buffer. AuNS shows two different LSPR absorbance bands at 736 nm and 550 nm, respectively. Multicolor was generated by iodide-mediated surface etching of AuNS in the presence of H<subscript>2</subscript>O<subscript>2</subscript>. Under the optimized conditions, the absorption peak Δλ had a good linear relationship with the concentration of H<subscript>2</subscript>O<subscript>2</subscript> with a linear range from 0.67~66.67 μmol L<superscript>−1</superscript>, and the detection limit is 0.44 μmol L<superscript>−1</superscript>. It can be used to detect residual H<subscript>2</subscript>O<subscript>2</subscript> in tap water samples. This method offered a promising visual method for point-of-care testing of H<subscript>2</subscript>O<subscript>2</subscript>-related biomarkers. [ABSTRACT FROM AUTHOR]
- Subjects :
- ETCHING
GOLD
DRINKING water
DETECTION limit
WATER sampling
HYDROGEN peroxide
Subjects
Details
- Language :
- English
- ISSN :
- 20796374
- Volume :
- 13
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Biosensors (2079-6374)
- Publication Type :
- Academic Journal
- Accession number :
- 164581271
- Full Text :
- https://doi.org/10.3390/bios13060585