Beilstein J. Nanotechnol.2022,13, 1531–1540, doi:10.3762/bjnano.13.126
octahedral iron chain handles its conductivity and redox properties, causing the magnetite to initialize oxidation/reduction reactions. Fe3O4 nanoparticles have been used as a photocatalyst for the degradation of azo dyes [15], for wastewater treatment [16][17], for water decomposition, and for Cr(VI
) reduction [18].
The study investigated the degradation of aqueous solutions of phenol (PhOH) and 2,6-dibromo-4-methylphenol (DBMP) via two processes, namely photocatalysis and ozonolysis. Two types of magnetite (M1 and M2) were used as catalysts in the photocatalysis process. The same type of magnetite
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Figure 1:
X-ray diffraction measurements of M1 (red), M2 (blue) (a), and UV–vis absorption spectra of M1 (red...
Beilstein J. Nanotechnol.2018,9, 1448–1470, doi:10.3762/bjnano.9.137
photocatalytic reduction of Cr(VI) along with their good recoverability and recyclability.
Keywords: charge transfer; Cr(VI) reduction; heterojunction; modified TiO2; photocatalysis; spinel oxides; Review
Introduction
The increase in the global population demands rapid growth of industrialization and
TiO2 modified with reduced graphene oxides (RGOs), CNTs and CDs. The various preparation methods of modified photocatalysts, conditions for photocatalytic reduction, source of illumination, percentage of Cr(VI) reduction and the superior performance of the composite photocatalysts in comparison with
for efficient photocatalytic Cr(VI) reduction [134]. They prepared the photocatalyst using a direct-wrapped route followed by hydrothermal etching. The high charge separation efficiency and redox ability are due to the synergetic effect of formation of a Z scheme photocatalytic process and its
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Figure 1:
Speciation diagram of Cr(VI). Reprinted from [6], copyright 2016 Thermo Fisher Scientific Inc.