Details

Autor(en) / Beteiligte

• Dildar, Aqsa
• Siddique, Amna
• Rabbee, Muhammad Fazle
• Rafiq, Muhammad Zeeshan
• Althomali, Raed H.
• Sharif, Shahzad
• faifi, Abeer Jaber
• Irfan, M.
• Aljabri, Mahmood D.
• Akhtar, Muhammad Nadeem
• Rahman, Saidur
• Rahman, Md. Rezaur
• Jillani, Shehzada Muhammad Sajid
• Sheikh, Tahir Ali
• Rahman, Mohammed M.

Titel

para-Nitrophenol detection by an electrochemical approach based on two-dimensional binary metal oxides ZrO2-Nd2O3 nanorod fabricated with PEDOT:PSS onto glassy carbon electrode

Ist Teil von

• Microchemical journal, 2024-07, Vol.202, p.110720, Article 110720

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •Binary metal oxide (ZrO2-Nd2O3) nanorods prepared via wet chemical method.•ZrO2-Nd2O3-NRs/PEDOT:PSS/GCE is fabricated for an ultra-sensitive detection of para-NP.•Newly fabricated ZrO2-Nd2O3-NRs/PEDOT:PSS/GCE as working electrode.•Sensor exhibited lowest detection limit (0.0141 pM) and highest sensitivity (0.67 μAμM-1cm−2)•Electrocatalytic degradation of para-NP by Advanced Oxidation Processes (AOPs)•Sensor presents good recovery in spike samples analysis. In this approach, a wet chemical method was employed to synthesize the nanorods (NRs) of Zirconium oxide − Neodymium Oxide (ZrO2-Nd2O3) in an aqueous solution. Comprehensive characterizations encompassing ultraviolet/visible diffuse reflectance spectroscopy (UV/vis DRS), Fourier transform infrared spectroscopy (FTIR), powder X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), alongside field emission scanning electron microscopy (FESEM) equipped with X-ray energy-dispersive spectroscopy (EDS), were applied for optical, elemental, morphological, and structural analyses of resultant material. To fabricate a highly selective and ultra-sensitive electrochemical sensor for para-Nitrophenol (para-NP) in the presence of other interfering toxic chemicals, a glassy carbon electrode (GCE) was modified with a thin layer of ZrO2-Nd2O3NRs. Poly 3,4-ethylenedioxythiophene polystyrene sulfonate (PEDOT:PSS) served as an adhesive conducting binder in this modification process. Subsequently, we introduced a novel electrochemical approach for the first time for the detection of para-NP by making use of newly developed ZrO2-Nd2O3-NRs/PEDOT:PSS/GCE as selective para-NP electrochemical sensor in an aqueous medium. This innovative electrochemical approach exhibited remarkable electrochemical responses, featuring high sensitivity and long-term stability when applied to para-NP detection. The calibration curve demonstrated linearity across broad linear dynamic range (LDR) spanning para-NP concentrations from 0.1 pM to 0.1 mM. Key analytical parameters, including limit of detection (LOD) at signal-to-noise ratio (SNR) of 3, limit of quantification (LOQ), and sensitivity, were determined to be 0.0141 pM, 0.047 pM, and 0.67 μAμM-1cm−2, respectively, based also on the gradient of calibration plot. This sensor holds significant promise for real sample analysis aimed at preserving the natural environment. So, this study introduces a novel and well-structured approach to the development of a highly sensitive para-NP sensor utilizing ZrO2-Nd2O3-NRs/PEDOT:PSS/GCE, employing a reliable electrochemical approach.