Structural effects on the catalytic activity of carbon-supported magnetite nanocomposites in heterogeneous Fenton-like reactions.

ABSTRACT: The catalytic reactivity of synthetic bare magnetite nanoparticles, activated carbon supported magnetite (AC-Mt), and graphene oxide supported magnetite (GO-Mt) for heterogeneous Fenton-like oxidation of methylene blue (MB) were compared, in order to investigate how the structural features of the support impact catalytic activity of the nanocomposites. The different effects of AC and GO on MB removal rate, hydroxyl radical (˙OH) production, iron leaching, and surface deactivation have been systematically studied. The rate constant of MB removal by AC-Mt was 0.1161 min^-1, one order of magnitude larger than the value of bare magnetite nanoparticles (0.0566 min^-1). The higher catalytic activity of AC-Mt might be attributed to the larger reactive surface area of well-disp

SUBMITTER: Zang H 

PROVIDER: S-EPMC9080278 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature