Novel development of zinc oxide–coated carbon nanoparticles from pineapple leaves using sol gel method for optimal adsorption of Cu2+ and reuse in latent fingerprint application

Bienvenu Gael Fouda-Mbanga, Kriveshini Pillay, Zikhona Tywabi-Ngeva

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

This study underlines a latest approach of preparing nitrogen carbon nanoparticles fused on zinc oxide nanoparticle nanocomposite (N-CNPs/ZnONP nanocomposite) for the uptake of copper ions (Cu2+) from wastewater using a sol gel method. The metal loaded adsorbent was then applied in the latent fingerprint application. N-CNPs/ZnONP nanocomposite proved to be a good sorbent for the optimal adsorption of Cu2+ at pH 8 and 1.0 g/L dosage. Langmuir isotherm best fitted the process with the maximum adsorption capacity of 285.71 mg/g that was superior to most values reported in other studies for the removal of Cu2+. At 25 °C, the adsorption was spontaneous and endothermic. Furthermore, Cu2+-N-CNPs/ZnONP nanocomposite revealed to be sensitive and selective for latent fingerprint (LFP) identification on a variety of porous surfaces. As a result, it is an excellent identifying chemical for latent fingerprint recognition in forensic science. Graphical Abstract: (Figure presented.)

Original languageEnglish
Pages (from-to)38801-38820
Number of pages20
JournalEnvironmental Science and Pollution Research
Volume31
Issue number27
DOIs
Publication statusPublished - Jun 2024

Keywords

  • Adsorption
  • Copper ions
  • Latent fingerprint
  • Metal-loaded adsorbent
  • Nanocomposite

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis

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