Comparison of the Peroxidase‐Like Activity of Unmodified, Amino‐Modified, and Citrate‐Capped Gold Nanoparticles
Top Cited Papers
- 2 March 2012
- journal article
- research article
- Published by Wiley in Chemphyschem
- Vol. 13 (5), 1199-1204
- https://doi.org/10.1002/cphc.201100906
Abstract
The origin of the peroxidase‐like activity of gold nanoparticles and the impact of surface modification are studied. Furthermore, some influencing factors, such as fabrication process, redox property of the modifier, and charge property of the substrate, are investigated. Compared to amino‐modified or citrate‐capped gold nanoparticles, unmodified gold nanoparticles show significantly higher catalytic activity toward peroxidase substrates, that is, the superficial gold atoms are a contributing factor to the observed peroxidase‐like activity. The different catalytic activities of amino‐modified and citrate‐capped gold nanoparticles toward 3,3′,5,5′‐tetramethylbenzidine (TMB) and 2,2′‐azino‐bis(3‐ethylbenzothiazoline‐6‐sulfonic acid) diammonium salt (ABTS) show that the charge characteristics of the nanoparticles and the substrate also play an important role in the catalytic reactions.Keywords
This publication has 48 references indexed in Scilit:
- Prussian-blue-modified iron oxide magnetic nanoparticles as effective peroxidase-like catalysts to degrade methylene blue with H2O2Journal of Hazardous Materials, 2011
- Peroxidase‐Like Activity of Cupric Oxide NanoparticleChemCatChem, 2011
- Carbon nanodots as peroxidase mimetics and their applications to glucose detectionChemical Communications, 2011
- Au@Pt nanostructures as oxidase and peroxidase mimetics for use in immunoassaysBiomaterials, 2011
- Efficient Removal of Organic Pollutants with Magnetic Nanoscaled BiFeO3 as a Reusable Heterogeneous Fenton-Like CatalystEnvironmental Science & Technology, 2010
- The artificial peroxidase activity of magnetic iron oxide nanoparticles and its application to glucose detectionBiomaterials, 2009
- Highly Efficient Drug Delivery with Gold Nanoparticle Vectors for in Vivo Photodynamic Therapy of CancerJournal of the American Chemical Society, 2008
- Effect of gold nanoparticle as a novel nanocatalyst on luminol–hydrazine chemiluminescence system and its analytical applicationAnalytica Chimica Acta, 2008
- Calculated Absorption and Scattering Properties of Gold Nanoparticles of Different Size, Shape, and Composition: Applications in Biological Imaging and BiomedicineThe Journal of Physical Chemistry B, 2006
- Surface Plasmon Resonance Scattering and Absorption of anti-EGFR Antibody Conjugated Gold Nanoparticles in Cancer Diagnostics: Applications in Oral CancerNano Letters, 2005