Photoelectrochemical H2-generation over Spinel FeCr2O4 in X2− solutions (X2−=S2− and )

Photocatalytic reduction of Cr(VI) on the novel hetero-system CuFe2O4/CdS

“…The spinels have been recently investigated as promising materials for photocatalytic applications [17]; CuFe 2 O 4 is selected because of its low cost, its chemical stability under the operating conditions and its non-toxicity. Indeed, copper and iron are by far the most attractive with regard to toxicity concern.…”

Rational design of manganese ferrite-graphene hybrid photocatalysts: Efficient water splitting and effective elimination of organic pollutants

“…In this issue, ZnFe 2 O 4 photocatalyst with p-type conductivity and a visible E g was investigated for water photo-decomposition into H 2 (197 mol g -1 s -1 ) [7] in the presence of S 2-; worked as a hole scavenger [10]. Photo-catalytic H 2 production was appreciably observed (8.26 cm 3 g -1 h -1 ) upon using FeCr 2 O 4 , that has been stabilized while involving S 2-and S 2 O 3 2-as hole consumption species [11][12]. Consequently, improving ferrospinels in water photodecomposition for sake of H 2 production can be attained in this current work via hybridizing MnFe 2 O 4 with graphene/graphene oxide to decrease E g , enhancing both surface area and electronic conductivity as well as decreasing particles size.…”

“…Magnetically recyclable MnFe 2 O 4 synthesized using sol gelhydrothermal technique and own an average particle diameter of 8 nm has presented high activity towards nitroarenes reduction [14]. Although nanoferrites own unusual properties such as magnetocrystalline anisotropy, high coercivity and moderate saturation magnetization [15], their usage alone in photoassisted reactions were usually hindered by many factors including morphology controlled synthesis and limited absorption of irradiated photons [10][11][12][13][14][15]. Accordingly, it is of great interest to design a nanoferrite material with smaller particle size (<10 nm), desired surface texturing properties, and controlled shape.…”

Photocatalytic reduction of Cr(VI) on the new hetero-system CuAl2O4/TiO2

“…This drawback can be overcome by introduction of cationic orbital VB which raises the energy and reduces the gap. In this regard, the spinels have attracted much attention as photocatalysts due to their ability to reduce water under visible illumination [18]. Among the congeners, CuAl 2 O 4 has interesting photocatalytic properties [19].…”