Electrosynthesis of bismuth nanodendrites/gallium nitride electrode for non-enzymatic hydrogen peroxide detection

Qing-Mei Jiang; Miao-Rong Zhang; Li-Qiang Luo; Ge-Bo Pan

doi:10.1016/j.talanta.2017.04.075

Electrosynthesis of bismuth nanodendrites/gallium nitride electrode for non-enzymatic hydrogen peroxide detection

Talanta. 2017 Aug 15:171:250-254. doi: 10.1016/j.talanta.2017.04.075. Epub 2017 May 1.

Authors

Qing-Mei Jiang¹, Miao-Rong Zhang², Li-Qiang Luo³, Ge-Bo Pan⁴

Affiliations

¹ Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, 200444 Shanghai, PR China; Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 215123 Suzhou, PR China.
² Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 215123 Suzhou, PR China; University of Chinese Academy of Sciences, 100049 Beijing, PR China.
³ Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, 200444 Shanghai, PR China.
⁴ Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 215123 Suzhou, PR China.

PMID: 28551137
DOI: 10.1016/j.talanta.2017.04.075

Abstract

Bismuth nanodendrites (BiNDs) were electrodeposited on planar gallium nitride (GaN) electrode via a differential pulse voltammetric technique to fabricate the non-enzymatic hydrogen peroxide (H₂O₂) sensor. SEM images revealed that the as-obtained BiNDs had numerous dendrite sub-branches, whose diameters ranged from 136 to 152nm. The BiNDs/GaN electrode showed linear amperometric responses for H₂O₂ in the concentration range from 10µM to 1mM with the sensitivity of 60.0μAmM^-1cm^-2. Another linear range was from 1 to 10mM with the sensitivity of 23.3μAmM^-1cm^-2. The limit of detection (LOD) was 5µM with the signal-to-noise ratio of 3. The applicability of the sensor was investigated to the H₂O₂ detection in real samples such as fetal bovine serum and milk, and the sensor exhibited excellent anti-interference capacity. The achieved results indicate that the as-prepared BiNDs/GaN sensor with good reproducibility and long-term stability was promising for detecting H₂O₂ in practical environments.

Keywords: Bismuth nanodendrites; Electrosynthesis; Gallium nitride; Hydrogen peroxide detection.