Publication

Highly Sensitive Electrodic Materials Based on Pt Nanoflowers Grown on Pt Nanospheres for Biosensor Development

Giovanni De Micheli, Sandro Carrara, Irene Taurino
2015
Conference Papers

Abstract

In this work we describe the realization of monometallic nanostructures by two simple electrodeposition steps. The surface of the modified electrode was characterized by scanning electron microscopy that confirms a homogeneous deposition of Pt nanospheres decorated with Pt nanoflowers. The so obtained nanostructured sensor exhibited good amperometric response towards hydrogen peroxide sensing at +0.30 V vs Ag|AgCl|Cl-. Therefore, it is especially useful toward glucose detection with reduced interferences. Glucose oxidase was immobilized onto the nanostructured surface by cross-linking with glutaraldehyde and the biosensor was characterized by chronoamperometric method in phosphate buffer. The biosensor showed a sensitivity of 29 ± 2 μA/(mM cm2). Measurements in cell media reveal that the Pt-Pt hybrid nanostructures are promising for real-time glucose monitoring in real biosample.

Official source

https://infoscience.epfl.ch/entities/publication/f26caf78-a5d7-416f-9ec6-7d1cbfcfb291

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Giovanni De Micheli, Sandro Carrara, Irene Taurino
2015
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f26caf78-a5d7-416f-9ec6-7d1cbfcfb291

About this result

Related concepts (22)

Biosensor

A biosensor is an analytical device, used for the detection of a chemical substance, that combines a biological component with a physicochemical detector. The sensitive biological element, e.g. tissue, microorganisms, organelles, cell receptors, enzymes, antibodies, nucleic acids, etc., is a biologically derived material or biomimetic component that interacts with, binds with, or recognizes the analyte under study. The biologically sensitive elements can also be created by biological engineering.

Glucose meter

A glucose meter, also referred to as a "glucometer", is a medical device for determining the approximate concentration of glucose in the blood. It can also be a strip of glucose paper dipped into a substance and measured to the glucose chart. It is a key element of glucose testing, including home blood glucose monitoring (HBGM) performed by people with diabetes mellitus or hypoglycemia. A small drop of blood, obtained from slightly piercing a fingertip with a lancet, is placed on a disposable test strip that the meter reads and uses to calculate the blood glucose level.

Nanoparticle

A nanoparticle or ultrafine particle is usually defined as a particle of matter that is between 1 and 100 nanometres (nm) in diameter. The term is sometimes used for larger particles, up to 500 nm, or fibers and tubes that are less than 100 nm in only two directions. At the lowest range, metal particles smaller than 1 nm are usually called atom clusters instead.

Related publications (30)

Polydopamine-coated photoautotrophic bacteria for improving extracellular electron transfer in living photovoltaics

Fabian Fischer, Ardemis Anoush Boghossian, Charlotte Elisabeth Marie Roullier, Melania Reggente, Mohammed Mouhib, Patricia Brandl, Hanxuan Wang

Living photovoltaics are microbial electrochemical devices that use whole cell–electrode interactions to convert solar energy to electricity. The bottleneck in these technologies is the limited electron transfer between the microbe and the electrode surfac ...

2024

Revealing the Mechanism Underlying 3D-AFM Imaging of Suspended Structures by Experiments and Simulations

Marcos Penedo Garcia

The invention of 3D atomic force microscopy (3D-AFM) has enabled visualizing subnanoscale 3D hydration structures. Meanwhile, its applications to imaging flexible molecular chains have started to be experimentally explored. However, the validity and princi ...

Wiley-V C H Verlag Gmbh2024

Structural study of nickelate based heterostructures

Jean-Marc Triscone, Duncan Thomas Lindsay Alexander, Bernat Mundet, Chih-Ying Hsu

Heterostructures consisting of SmNiO3 and NdNiO3 alternating layers with additional LaAlO3 spacer layers were grown and fully characterized by means of x-ray diffraction, atomic force microscopy, and scanning transmission electron microscopy. A change in t ...

Aip Publishing2024