Abstract
A microwave technique was used to prepare palladium nanoparticles (PdNPs) from albizia gum (AG). A major advantage of this method is its rapidity, low cost, and no toxic chemicals. UV–Visible spectrophotometer, FTIR, powder XRD, and TEM were employed to characterize the synthesized AG@PdNPs. The XRD spectrum confirmed a face-centred cubic structure for PdNPs. A spherical shape and 12–14 nm diameter were observed in TEM images of AG@PdNPs. AG@PdNPs effectively degraded Congo red (CR) and 4-nitrophenol (4-NP) dyes in the presence of NaBH4. These reduction processes were explored using a pseudo-first-order kinetic analysis. The impact of temperature and dosage of catalyst on the degradation of 4-nitrophenol to 4-aminophenol was examined. In addition to other thermodynamic properties like activation enthalpy and entropy, the activation energy was estimated. The recyclability of AG@PdNPs was also assessed. AG@PdNPs have a high potential as an environmental catalyst for water remediation.
Original language | English |
---|---|
Article number | 113970 |
Journal | Optical Materials |
Volume | 142 |
DOIs | |
Publication status | Published - Aug 1 2023 |
Keywords
- Activation of entropy and enthalpy changes
- Albizia gum
- Catalytic activity
- Palladium nanoparticles
- Reusability of catalyst
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Spectroscopy
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Electrical and Electronic Engineering