𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Electrochemical DNA Biosensors Based on Palladium Nanoparticles Combined with Carbon Nanotubes

✍ Scribed by Zhu Chang; Hao Fan; Kun Zhao; Miao Chen; Pingang He; Yuzhi Fang

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
200 KB
Volume
20
Category
Article
ISSN
1040-0397

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Palladium nanoparticles, in combination with multi‐walled carbon nanotubes (MWCNTs), were used to fabricate a sensitivity‐enhanced electrochemical DNA biosensor. MWCNTs and palladium nanoparticles were dispersed in Nafion, which were used to modify a glassy carbon electrode (GCE). Oligonucleotides with amino groups at the 5′ end were covalently linked onto carboxylic groups of MWCNTs on the electrode. The hybridization events were monitored by differential pulse voltammetry (DPV) measurement using methylene blue (MB) as an indicator. Due to the ability of carbon nanotubes to promote electron‐transfer and the high catalytic activities of palladium nanoparticles for electrochemical reaction of MB, the sensitivity of presented electrochemical DNA biosensors was remarkably improved. The detection limit of the method for target DNA was 1.2×10^−13^ M.

📜 SIMILAR VOLUMES

Amperometric Glucose Biosensor Based on
Amperometric Glucose Biosensor Based on Platinum Nanoparticles Combined Aligned Carbon Nanotubes Electrode
✍ Kun Zhao; Shuqi Zhuang; Zhu Chang; Haiyan Songm; Liming Dai; Pingang He; Yuzhi F 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 167 KB

## Abstract A sensitive amperometric glucose biosensor based on platinum nanoparticles (PtNPs) combined aligned carbon nanotubes (ACNTs) electrode was investigated. PtNPs which can enhance the electrocatalytic activity of the electrode for electrooxidating hydrogen peroxide by enzymatic reaction we

Glucosinolate Amperometric Bienzyme Bios
Glucosinolate Amperometric Bienzyme Biosensor Based on Carbon Nanotubes-Gold Nanoparticles Composite Electrodes
✍ V. Serafín; L. Agüí; P. Yáñez-Sedeño; José M. Pingarrón 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 220 KB

## Abstract A novel electrochemical biosensor design for glucosinolate determination involving bulk‐incorporation of the enzymes glucose oxidase and myrosinase into a colloidal gold ‐ multiwalled carbon nanotubes composite electrode using Teflon as binder is reported. Myrosinase catalyzes the hydro