Jump to main content
Jump to site search


Visible-light-driven photocatalytic reduction of Cr (VI) on magnetite/carboxylate-rich carbon sheets

Abstract

A solid state ferricarboxylate photocatalyst, magnetite/carboxylate-rich carbon sheets (MCRCS), was synthesized in air via a low-temperature carbonization process. In the structure of MCRCS, both Fe3O4 nanoparticles and EDTA are homogeneously dispersed into the carbon sheets and form the ferricarboxylate complexes. Abundant ferricarboxylate complexes endow the MCRCS with marked visible light absorption properties. MCRCS exhibit excellent visible-light-driven photoreduction activities of Cr(VI). Fe(II), O2•-, and carboxylate radical (R-COO)n3-n* produced from Fe(II)/Fe(III) photoredox cycle of MCRCS are the main reductants for the reduction of Cr(VI). After the photoreduction of Cr(VI), MCRCS can be magnetically separated from aqueous solution easily. Unlike conventional ferricarboxylate photocatalyst (homogeneous and heterogeneous) fabricated by two components, iron species (dissolved or solid) and the dissolved low-molecular-weight carboxylic acids, MCRCS present as all solid state and every particle of MCRCS is an individual unit which can release active radicals O2•- by itself. The specialty of all solid state will simplify the operation process of MCRCS.

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 May 2017, accepted on 11 Sep 2017 and first published on 12 Sep 2017


Article type: Paper
DOI: 10.1039/C7NJ01800B
Citation: New J. Chem., 2017, Accepted Manuscript
  •   Request permissions

    Visible-light-driven photocatalytic reduction of Cr (VI) on magnetite/carboxylate-rich carbon sheets

    Z. Luo, J. Wang, L. Qu, J. Jia, S. Jiang, X. Zhou, X. Wu and Z. Wu, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ01800B

Search articles by author

Spotlight

Advertisements