Gold nanoparticles plated porous silicon nanopowder for nonenzymatic voltammetric detection of hydrogen peroxide

Md A Rashed; Farid A Harraz; M Faisal; Ahmed Mohamed El-Toni; Mabkhoot Alsaiari; M S Al-Assiri

doi:10.1016/j.ab.2020.114065

Gold nanoparticles plated porous silicon nanopowder for nonenzymatic voltammetric detection of hydrogen peroxide

Anal Biochem. 2021 Feb 15:615:114065. doi: 10.1016/j.ab.2020.114065. Epub 2020 Dec 13.

Authors

Md A Rashed¹, Farid A Harraz², M Faisal³, Ahmed Mohamed El-Toni⁴, Mabkhoot Alsaiari⁵, M S Al-Assiri⁶

Affiliations

¹ Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box: 1988, Najran, 11001, Saudi Arabia; Department of Chemistry, Faculty of Science, Mawlana Bhashani Science and Technology University, Santosh, Tangail, 1902, Bangladesh.
² Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box: 1988, Najran, 11001, Saudi Arabia; Nanomaterials and Nanotechnology Department, Central Metallurgical Research and Development Institute (CMRDI), P.O. 87 Helwan, Cairo, 11421, Egypt. Electronic address: faharraz@nu.edu.sa.
³ Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box: 1988, Najran, 11001, Saudi Arabia; Department of Chemistry, Faculty of Science and Arts, Najran University, Saudi Arabia.
⁴ King Abdullah Institute for Nanotechnology, King Saud University, Riyadh, 11451, Saudi Arabia; Nanomaterials and Nanotechnology Department, Central Metallurgical Research and Development Institute (CMRDI), P.O. 87 Helwan, Cairo, 11421, Egypt.
⁵ Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box: 1988, Najran, 11001, Saudi Arabia; Department of Chemistry, Faculty of Science and Arts at Sharurah, Najran University, Saudi Arabia.
⁶ Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P.O. Box: 1988, Najran, 11001, Saudi Arabia; Department of Physics, Faculty of Science and Arts, Najran University, Saudi Arabia.

PMID: 33321107
DOI: 10.1016/j.ab.2020.114065

Abstract

A voltammetric approach was developed for the selective and sensitive determination of hydrogen peroxide using Au plated porous silicon (PSi) nanopowder modified glassy carbon electrode (GCE). The AuNPs-PSi hybrid structure was synthesized via stain etching procedure followed by an immersion plating method to deposit AuNPs onto PSi via a simple galvanic displacement reaction with no external reducing agent to convert Au³⁺ to Au⁰. The as-fabricated AuNPs-PSi catalyst was successfully characterized by XRD, Raman, FTIR, XPS, SEM, TEM and EDS techniques. Well crystalline nature of the as-fabricated hybrid structure with AuNPs size ranging from 5 to 40 nm was observed. The specific surface area and total pore volume for both PSi and AuNPs plated PSi were evaluated using N₂ adsorption isotherm technique. Cyclic voltammetry and electrochemical impedance spectroscopy techniques were applied to investigate the catalytic efficiency of AuNPs-PSi modified electrode compared to pure PSi/GCE and unmodified GCE. The sensing performance of the active material modified GCE was thoroughly examined with linear sweep voltammetry (LSV) and square wave voltammetry (SWV) techniques. The AuNPs-PSi/GCE exhibited a remarkable linear dynamic range between 2.0 and 13.81 mM (for LSV) and 0.5-6.91 mM for (SWV) with high sensitivity and low detection limit of 10.65 μAmM^-1cm^-2 and 14.84 μM for LSV, whereas 10.41 μAmM^-1cm^-2 and 15.16 μM using SWV techniques, respectively. The fabricated sensor electrode showed excellent anti-interfering ability in the presence of several common biomolecules as well as demonstrated good operational stability and reproducibility with low relative standard deviation. Moreover, the modified electrode showed acceptable recovery of H₂O₂ in a real sample analysis. Thus, the developed AuNPs-PSi hybrid nanomaterial represents an excellent electrocatalyst for the efficient detection and quantification of H₂O₂ by the electrochemical approach.

Keywords: AuNPs; H(2)O(2) sensor; Linear sweep voltammetry; PSi; Sensitivity; Square wave voltammetry.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Carbon / chemistry
Catalysis
Dielectric Spectroscopy / methods
Electrochemical Techniques / methods*
Electrodes
Gold / chemistry*
Hydrogen Peroxide / analysis*
Limit of Detection
Metal Nanoparticles / chemistry*
Nanostructures / chemistry
Porosity
Reproducibility of Results
Silicon / chemistry*

Substances

Carbon
Gold
Hydrogen Peroxide
Silicon