Search: L773:1095 9130 OR L773:1046 2023
> (2015-2019) >
A bimetallic nanoco...
A bimetallic nanocoral Au decorated with Pt nanoflowers (bio)sensor for H2O2 detection at low potential
-
- Sanzò, Gabriella (author)
- Swiss Federal Institute of Technology,Sapienza University of Rome
-
- Taurino, Irene (author)
- Swiss Federal Institute of Technology
-
- Puppo, Francesca (author)
- Swiss Federal Institute of Technology
-
show more...
-
- Antiochia, Riccarda (author)
- Sapienza University of Rome
-
- Gorton, Lo (author)
- Lund University,Lunds universitet,Biokemi och Strukturbiologi,Centrum för Molekylär Proteinvetenskap,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Biochemistry and Structural Biology,Center for Molecular Protein Science,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
-
- Favero, Gabriele (author)
- Sapienza University of Rome
-
- Mazzei, Franco (author)
- Sapienza University of Rome
-
- Carrara, Sandro (author)
- Swiss Federal Institute of Technology
-
- De Micheli, Giovanni (author)
- Swiss Federal Institute of Technology
-
show less...
-
(creator_code:org_t)
- Elsevier BV, 2017
- 2017
- English.
-
In: Methods. - : Elsevier BV. - 1046-2023. ; 129, s. 89-95
- Related links:
-
http://dx.doi.org/10...
-
show more...
-
https://infoscience....
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- In this work, we have developed for the first time a method to make novel gold and platinum hybrid bimetallic nanostructures differing in shape and size. Au-Pt nanostructures were prepared by electrodeposition in two simple steps. The first step consists of the electrodeposition of nanocoral Au onto a gold substrate using hydrogen as a dynamic template in an ammonium chloride solution. After that, the Pt nanostructures were deposited onto the nanocoral Au organized in pores. Using Pt (II) and Pt (IV), we realized nanocoral Au decorated with Pt nanospheres and nanocoral Au decorated with Pt nanoflowers, respectively. The bimetallic nanostructures showed better capability to electrochemically oxidize hydrogen peroxide compared with nanocoral Au. Moreover, Au-Pt nanostructures were able to lower the potential of detection and a higher performance was obtained at a low applied potential. Then, glucose oxidase was immobilized onto the bimetallic Au-Pt nanostructure using cross-linking with glutaraldehyde. The biosensor was characterized by chronoamperometry at +0.15V vs. Ag pseudo-reference electrode (PRE) and showed good analytical performances with a linear range from 0.01 to 2.00mM and a sensitivity of 33.66μA/mMcm2. The good value of Km app (2.28mM) demonstrates that the hybrid nanostructure is a favorable environment for the enzyme. Moreover, the low working potential can minimize the interference from ascorbic acid and uric acid as well as reducing power consumption to effect sensing. The simple procedure to realize this nanostructure and to immobilize enzymes, as well as the analytical performances of the resulting devices, encourage the use of this technology for the development of biosensors for clinical analysis.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- Au nanocoral
- Bimetallic hybrid nanostructure
- Glucose oxidase
- Hydrogen peroxide
- Pt nanoflowers
- Pt nanospheres
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
-
Methods
(Search for host publication in LIBRIS)
To the university's database