Corrosion inhibition of copper particles on ITO with 1,2,4-triazole-3-carboxylic acid

Feng Hao Chang, Tai You Chen, Szu Han Lee, Yun Hsien Chen, You Jyun Chen, Jong Liang Lin

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3 Citations (Scopus)


Copper particles electrodeposited on ITO/glass (Cu/ITO) have been prepared and used to explore the inhibitory capability of 1,2,4-triazole-3-carboxylic acid (TCA) against the copper oxidation. The protective effect of TCA for the Cu/ITO is demonstrated in CH3OH solution with NaOH and in H2O solution with NaCl, using cyclic voltammetry. The surface species responsible for the corrosion inhibition are analyzed using X-ray photoelectron and infrared spectroscopies. The spectroscopic results strongly suggest that the doubly dehydrogenated TCA (TCA-2H), from the N–H and O–H bond scission, plays an important role for the copper protection. The density-functional-theory calculations of the TCA-2H on Cu(100) and Cu(111) model surfaces show that it is adsorbed with a perpendicular orientation, via the 1N, 2N and one of the carboxylate oxygens. Moreover, the calculated vibrational frequencies of the TCA-2H on Cu(100) agree with the observed ones from the species exerting the inhibitory effect.

Original languageEnglish
Pages (from-to)162-169
Number of pages8
JournalSurfaces and Interfaces
Publication statusPublished - 2018 Mar

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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