A Sensitive Hydroquinone Amperometric Sensor Based on a Novel Palladium Nanoparticle/Porous Silicon/Polypyrrole-Carbon Black Nanocomposite

• Published in: Biosensors (Basel) Vol. 13; no. 2; p. 178
• Main Authors: Alrashidi, Abdullah, El-Sherif, Anas M, Ahmed, Jahir, Faisal, M, Alsaiari, Mabkhoot, Algethami, Jari S, Moustafa, Mohamed I, Abahussain, Abdulaziz A M, Harraz, Farid A
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 23.01.2023; MDPI
• Subjects: Biosensors; Black carbon; Carbon; Carbon black; Chemical sensors; Composition; Control; Cost analysis; Electrical measurement; Electrochemistry; Electrodes; Environmental aspects; Environmental impact; Glassy carbon; Health aspects; Health hazards; Hydroquinone; hydroquinone sensor; Metal oxides; Nanocomposites; Nanomaterials; Nanoparticles; Nanostructured materials; Nitrogen dioxide; Palladium; Pd nanoparticles; Phenols; Physical characteristics; Pollutants; Polymers; polypyrrole; Polypyrroles; Porous silicon; Reproducibility; Silicon; Spectrum analysis; standard addition method; Saudi Arabia; polypyrrole; standard addition method; carbon black; hydroquinone sensor; Pd nanoparticles; porous silicon
• ISSN: 2079-6374; 2079-6374
• DOI: 10.3390/bios13020178

Exposure to hydroquinone (HQ) can cause various health hazards and negative impacts on the environment. Therefore, we developed an efficient electrochemical sensor to detect and quantify HQ based on palladium nanoparticles deposited in a porous silicon-polypyrrole-carbon black nanocomposite (Pd@PSi-PPy-C)-fabricated glassy carbon electrode. The structural and morphological characteristics of the newly fabricated Pd@PSi-PPy-C nanocomposite were investigated utilizing FESEM, TEM, EDS, XPS, XRD, and FTIR spectroscopy. The exceptionally higher sensitivity of 3.0156 μAμM cm and a low limit of detection (LOD) of 0.074 μM were achieved for this innovative electrochemical HQ sensor. Applying this novel modified electrode, we could detect wide-ranging HQ (1-450 μM) in neutral pH media. This newly fabricated HQ sensor showed satisfactory outcomes during the real sample investigations. During the analytical investigation, the Pd@PSi-PPy-C/GCE sensor demonstrated excellent reproducibility, repeatability, and stability. Hence, this work can be an effective method in developing a sensitive electrochemical sensor to detect harmful phenol derivatives for the green environment.