Modification of structured bio‑carbon derived from spongin-based scaffolds with nickel compounds to produce a functional catalyst for reduction and oxidation reactions: Potential for use in environmental protection - Publication - Bridge of Knowledge

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Modification of structured bio‑carbon derived from spongin-based scaffolds with nickel compounds to produce a functional catalyst for reduction and oxidation reactions: Potential for use in environmental protection

Abstract

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.

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Category:
Articles
Type:
artykuły w czasopismach
Published in:
SCIENCE OF THE TOTAL ENVIRONMENT no. 794,
ISSN: 0048-9697
Language:
English
Publication year:
2021
Bibliographic description:
Żółtowska S., Bielan Z., Zembrzuska J., Siwińska-Ciesielczyk K., Piasecki A., Zielińska-Jurek A., Jesionowski T.: Modification of structured bio‑carbon derived from spongin-based scaffolds with nickel compounds to produce a functional catalyst for reduction and oxidation reactions: Potential for use in environmental protection// SCIENCE OF THE TOTAL ENVIRONMENT -Vol. 794, (2021), s.148692-
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.scitotenv.2021.148692
Verified by:
Gdańsk University of Technology

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