Electrochemical properties modulation of Zinc oxide nanoparticles |
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| Institution: | 1. Department of Physics, Andhra University, Visakhapatnam, A.P, India;2. Department of Basic Science and Humanities, Raghu Institute of Technology (A), Dakamarri, Bheemunipatnam Mandal, Visakhapatnam, A.P., India;3. Department of Physics, Sri Venkateswara College, Benito Juarez Marg, Dhaula, University of Delhi, New Delhi, 110021, India;4. Department of Engineering Physics, AUCE (A), Andhra University, Visakhapatnam, A.P, India;5. Department of Physics, College of Natural and Computational Science, Wolkite University, Wolkite, Ethiopia;1. Department of Catalysis and Fine Chemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India;2. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India;1. Department of Chemistry, Raghu Engineering College, Visakhapatnam, 531162, Andhra Pradesh, India;2. Department of Chemistry, Krishna University, Andhra Pradesh, 521004, India;1. Department of Physics, Sri Paramakalyani College, Alwarkurichi, Affiliated to Manomaniam Sundaranar University, Tamil Nadu, India;2. Sri Paramakalyani College, Alwarkurichi, Affiliated to Manomaniam Sundaranar University, Tamil Nadu, India;1. Department of Chemical Engineering, Indian Institute of Technology Guwahati, India;2. Department of Chemical Engineering, Institute of Chemical Technology Marathwada Campus, Jalna, India |
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| Abstract: | The influence of zinc salts precursors (nitrate, acetate, chloride) on the electroactivity of the synthesised Zinc oxide nanoparticles (ZnONPs) was investigated using Glassy carbon ZnONPs modified electrode (ZnONPs films). The precipitation synthesised ZnONPs ‘s optical, morphological, size and Structural properties were assessed by usual spectroscopical technique. The XRD data confirmed synthesis of The ZnONPs which were predominately Zincite except for the nitrate product (zincite, ZHNH). All the NPs were of smaller size with the highest diameter size of 0.25 μM and lowest 0.066 μM for nitrate and chloride NPs respectively. All had good electroactivity, with rate constants (ks) above 1 × 10?2 indicating fast reversible reactions, values ranged from 0.6152 to 0.7515 for Zn(NO3) and Zn(CH3COO)2 respectively. Excellent opto-electric properties were observed with the nitrate product that had the highest band gaps (～3.7 eV), DPV current(,7.57 × 10?7 A) ΔEp, diffusion coefficient (De) (3.120 × 10?1(cm2/s (Ariyanta et al., 2022) 5]) and rate constant (0.62 S-1). In addition it had the lowest resistance as indicated by the Rs value (1.13 kΩ) below the bare electrode value lowest Rct (444.77 kΩ) and CPE (3.00 × 10?6 F). For fabrication of sensors and batteries where low resistance and conductivity are essential, ZnONPs using Nitrate is ideal. |
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| Keywords: | ZnO nanoparticles Film electroactivity Precursors Electron impedance spectroscopy |
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