Cu doped graphitic C3N4 for p-nitrophenol reduction and sensing applications

Vattakkoval Nisha, Sreejesh Moolayadukkam, Anjali Paravannoor, Deepthi Panoth, Yu Hsu Chang, Shajesh Palantavida, Steven J. Hinder, Suresh C. Pillai, Baiju Kizhakkekilikoodayil Vijayan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A series of Cu doped graphitic carbon nitride (g-C3N4) catalysts with different ratios of copper were synthesized by thermal method, using urea and copper sulphate as precursors. XPS (X-ray Photoelectron Spectroscopy) studies indicated that the peak of N1s at 398.9 eV is due to Cu–N bond and a peak at 932.9 eV showed the presence of Cu–N–C bond. Catalytic hydrogenation of p-nitrophenol (Para-NP) to para-aminophenol (Para-AP) in presence of g-C3N4 (gCN) and copper doped g-C3N4 (CN-Cu) with sodium borohydride (NaBH4) was investigated by UV–Visible spectroscopy. The as-synthesized graphitic carbon nitride with 1% copper (CN-1Cu) doped sample exhibits superior catalytic performance and higher stability compared to fine Cu powder in the second cycle. Additionally, electrochemical paracetamol sensing properties of the samples were studied using cyclic voltammetry and chronoamperometry. Consistent with the catalytic performances, CN-1Cu exhibited greater sensitivity towards the detection of paracetamol within the broad range of 38 µM to 3.64 mM and the study was carried out in the physiological pH ∼ 7.4.

Original languageEnglish
Article number109598
JournalInorganic Chemistry Communications
Volume142
DOIs
Publication statusPublished - Aug 2022
Externally publishedYes

Keywords

  • Copper doped carbon nitride
  • P-Nitrophenol reduction
  • Paracetamol sensor

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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