Cui Hua
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- Professor
- Supervisor of Doctorate Candidates
- Supervisor of Master's Candidates
- Name (English):Hua Cui
- Name (Pinyin):Cui Hua
- E-Mail:
- Business Address:环境资源楼-339
- Contact Information:0551－3600730
- Degree:Dr
- Professional Title:Professor
- Teacher College:Chemistry and Materials Science
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- Paper Publications
Synthesis, characterization, and electrochemiluminescence of luminol-reduced gold nanoparticles and their application in a hydrogen peroxide sensor
Release time:2021-08-02 Hits:
- DOI number:10.1002/chem.200700011
- Journal:Chem. Eur. J.
- Abstract:It was found that chloroauric acid (HAuCl4) could be directly reduced by the luminescent reagent luminol in aqueous solution to form gold nanoparticles (AuNPs), the size of which depended on the amount of luminol. The morphology and surface state of as-prepared AuNPs were characterized by transmission electron microscopy, UV/visible spectroscopy, X-ray photoelectron spectroscopy, FTIR spectroscopy, and thermogravimetric analysis. All results indicated that residual luminol and its oxidation product 3-aminophthalate coexisted on the surface of AuNPs through the weak covalent interaction between gold and nitrogen atoms in their amino groups. Subsequently, a luminol-capped AuNP-modified electrode was fabricated by the immobilization of AuNPs on a gold electrode by virtue of cysteine molecules and then immersion in a luminol solution. The modified electrode was characterized by cyclic voltammetry, electrochemical impedance spectroscopy, and scanning electron microscopy. The as-prepared modified electrode exhibited an electrochemiluminescence (ECL) response in alkaline aqueous solution under a double-step potential. H2O2 was found to enhance the ECL. On this basis, an ECL sensor for the detection of H2O2 was developed. The method is simple, fast, and reagent free. It is applicable to the determination of H2O2 in the range of 3×10−7–1×10−3 mol L−1 with a detection limit of 1×10−7 mol L−1 (S/N=3).
- Co-author:段春凤,董永平,郭吉兆
- First Author:王伟
- Indexed by:Journal paper
- Correspondence Author:Hua Cui
- Discipline:Natural Science
- Document Type:J
- Volume:13
- Issue:24
- Page Number:6975-6984
- Translation or Not:no
- Date of Publication:2007-08-07
- Included Journals:SCI
- Links to published journals:https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/chem.200700011