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<p>A study has been undertaken on the synthesis and characterization of a Ni–TiO<sub>2</sub>/Cu electrode, which has the potential to be used as an electrode candidate in the voltammetric sensor. The objective of this study is to create, analyze, measure the highest oxidation current, and assess the specific capacity of Ni–TiO<sub>2</sub>/Cu. The Ni–TiO<sub>2</sub>/Cu electrode underwent characterization by the utilization of FTIR, XRD, and SEM–EDX techniques. FTIR examination indicates the existence of Ti–O and Ti–O–Ti functional groups in the range of 400 to 1000&#xa0;cm⁻<sup>1</sup>. Additionally, Ni–O is observed at 1097.50&#xa0;cm<sup>−1</sup> and 1122.57&#xa0;cm<sup>−1</sup>, while Cu–O is detected at 575&#xa0;cm<sup>−1</sup>. The XRD spectrum exhibits distinctive crystal morphologies with peaks at specific 2θ angles for Ni (20.27°, 34.95°, 48.08°) and TiO<sub>2</sub> anatase (25.30°, 37.18°, 72.31°). The Cu spectrum shows peaks at 2θ angles (44.61°, 55.15°, 62.69°, 75.08°). SEM analysis of surface morphology shows that Ni–TiO<sub>2</sub> has non-agglomerated topography structures that are smaller and smoother. In contrast, Ni–TiO<sub>2</sub>/Cu displays a distinct morphology characterized by clusters of nano-sized primary particles. The material composition of Ni–TiO<sub>2</sub>/Cu is determined using EDX analysis, revealing the presence of the following elements: O (34.53%), Ni (31.58%), Ti (10.96%), Cu (7.69%), and additional unidentified elements. The utilization of the cyclic voltammetry (CV) technique revealed that the Ni–TiO<sub>2</sub>/Cu electrode attained its highest specific capacity at a scan rate of 0.1&#xa0;V/s, reaching a value of 266.8 F&#xa0;g<sup>−1</sup>.</p>

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High Current Capability of Ni–TiO2 Bivalent Semiconductor Nanocomposites in the Presence of CuO Nanoparticles

  • 期刊论文

  • 发表日期：

    2025年9月19日

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  • Muhammad Nurdin,
  • Husain Insawan,
  • Abdul Haris Watoni,
  • Hasnawati Hasnawati,
  • Maulidiyah Maulidiyah,
  • Fadil Arham,
  • Zul Arham

摘要

A study has been undertaken on the synthesis and characterization of a Ni–TiO2/Cu electrode, which has the potential to be used as an electrode candidate in the voltammetric sensor. The objective of this study is to create, analyze, measure the highest oxidation current, and assess the specific capacity of Ni–TiO2/Cu. The Ni–TiO2/Cu electrode underwent characterization by the utilization of FTIR, XRD, and SEM–EDX techniques. FTIR examination indicates the existence of Ti–O and Ti–O–Ti functional groups in the range of 400 to 1000 cm⁻1. Additionally, Ni–O is observed at 1097.50 cm−1 and 1122.57 cm−1, while Cu–O is detected at 575 cm−1. The XRD spectrum exhibits distinctive crystal morphologies with peaks at specific 2θ angles for Ni (20.27°, 34.95°, 48.08°) and TiO2 anatase (25.30°, 37.18°, 72.31°). The Cu spectrum shows peaks at 2θ angles (44.61°, 55.15°, 62.69°, 75.08°). SEM analysis of surface morphology shows that Ni–TiO2 has non-agglomerated topography structures that are smaller and smoother. In contrast, Ni–TiO2/Cu displays a distinct morphology characterized by clusters of nano-sized primary particles. The material composition of Ni–TiO2/Cu is determined using EDX analysis, revealing the presence of the following elements: O (34.53%), Ni (31.58%), Ti (10.96%), Cu (7.69%), and additional unidentified elements. The utilization of the cyclic voltammetry (CV) technique revealed that the Ni–TiO2/Cu electrode attained its highest specific capacity at a scan rate of 0.1 V/s, reaching a value of 266.8 F g−1.