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Preparing Cuprous Iodide Nanocolloid by the Electrical Spark Discharge Method

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Abstract

In this study, the electric spark discharge method was used to prepare a cuprous iodide nanocolloid (CuINC); specifically, an electrical discharge machine was used to prepare a CuINC under five sets of pulse width modulation (Ton–Toff) parameters, and ultraviolet–visible spectrophotometry and a zetasizer were used to evaluate the most suitable parameter set. Copper wires were used as electrodes (copper content = 99.7%, diameter = 1 mm), and deionized water mixed with iodine was used as the dielectric fluid. The analysis results indicated that the CuINC prepared under Ton–Toff = 10–10 µs had absorbance of 1.8 and a zeta potential of − 31.9 mV. The resultant CuINC had the highest concentration and suspension stability; this indicated that Ton–Toff = 10–10 µs is the most suitable parameter combination for preparing a CuINC. X-ray diffraction revealed a complete CuI crystal structure. Transmission electron microscopy images showed that most of the CuI nanoparticles were smaller than 5 nm and that the nanoparticles were evenly dispersed. The electric-discharge-based production process employed in this study is rapid and simple, and the end products have favorable suspension power. The method is a safe, environmentally friendly, and rapid method of preparing CuINCs.

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Abbreviations

CuINC:

Cuprous iodide nanocolloid

DC:

Direct current

NC:

Nanocolloid

CuINPs:

Cuprous iodide nanoparticles

ESDM:

Electrical Spark Discharge Method

EDX:

Energy-dispersive X-ray spectroscopy

DW:

Deionized water

UV–Vis:

Ultraviolet–Visible spectrophotometry

NPs:

Nanoparticles

XRD:

X-ray diffraction

EDMs:

Electrical discharge machines

TEM:

Transmission electron microscopy

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Acknowledgements

The authors would like to thank the Precision Research and Analysis Center, National Taipei University of Technology for technically supporting this research.

Funding

The authors would like to thank the Ministry of Science and Technology (MOST 108-2221-E-027-050-) for financial support of this research.

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Authors and Affiliations

  1. Department of Electrical Engineering, National Taipei University of Technology, Taipei, Taiwan (R.O.C.)

    Kuo-Hsiung Tseng, Wei-Jhih Lin, Meng-Yun Chung & Der-Chi Tien

  2. Materials Chemistry, Warsaw University of Technology, Warynskiego 1, 00-645, Warsaw, Poland

    Leszek Stobinski

Authors
  1. Kuo-Hsiung Tseng
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  2. Wei-Jhih Lin
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  3. Meng-Yun Chung
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  4. Der-Chi Tien
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  5. Leszek Stobinski
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Contributions

Data curation, MC and DT; Formal analysis, WL; Funding acquisition, KT; Methodology, DT and WL; Project administration, KT; Resources, KT; Supervision, KT and LS; Validation, DT and LS; Writing—original draft, WL and DT; Writing—review & editing, LS and MC. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Kuo-Hsiung Tseng.

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Tseng, KH., Lin, WJ., Chung, MY. et al. Preparing Cuprous Iodide Nanocolloid by the Electrical Spark Discharge Method. J Clust Sci 33, 2069–2075 (2022). https://doi.org/10.1007/s10876-021-02127-z

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  • DOI: https://doi.org/10.1007/s10876-021-02127-z

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