Repozytorium publikacji - Politechnika Gdańska

Three different 3D fibrous-like NiO/Ni(OH)2/Ni‑carbonized spongin-based materials were prepared via a simple sorption–reduction method. Depending on the support used, the catalysts were composed of carbon, nickel oxide, nickel hydroxide and zero-valent nickel, with the surface content of the nickel-containing phase in the range 15.2–26.0 wt%. Catalytic studies showed promising activity in the oxidation of phenolic compounds in water and in the reduction of 4-nitrophenol. The oxidation efficiency depends on the substrate used and ranges from 80% for phenol at pH 2 to 99% for 4-chlorophenoxyacetic acid (4-CPA) and methylchlorophenoxypropionic acid (MCPP). In the reduction reaction, all catalysts exhibited superior activity, with rate constants in the range 0.648–1.022 min-1. The work also includes a detailed investigation of reusability and kinetic studies.

Autorzy

• Sonia Żółtowska,
• Zuzanna Bielan,
• Joanna Zembrzuska,
• dr hab. inż. Katarzyna Siwińska-Ciesielczyk,
• Adam Piasecki,
• prof. dr hab. inż. Anna Zielińska-Jurek link otwiera się w nowej karcie ,
• Teofil Jesionowski