Visible light responsive photocatalytic applications of transition metal (M=Cu, Ni and Co) doped α-Fe2O3 nanoparticles

Zn Doped α-Fe2O3: An Efficient Material for UV Driven Photocatalysis and Electrical Conductivity

“…Photocatalytic properties of nanoparticles were performed for hazardous Rose bengal dye and showed effective degradation in the presence of UV light. Hence, Zn 2+ doped hematite can be considered as an efficient material for the potential applications in the domain of photocatalysis and also higher value of dielectric constant at room temperature makes them applicable in high energy storage devices.Crystals 2020, 10, 273 2 of 18 potential applications such as photocatalysts, magnetic data storage, gas sensors, lithium-ion batteries, spintronics and ferrofluids [1,[5][6][7][8]. The atomic arrangement possessed by hematite is similar to that of corundum α-Al 2 O 3 structure, in which anions (O 2− ions) are stacked in hexagonal close-packed arrangement (framework by the regular alternating layers, in each layer the atoms lie at the vertices of a series of equilateral triangles and the atoms overlie one another in one layer), with cations (Fe 3+ ) occupying 2/3 octahedral coordination geometry [9].α-Fe 2 O 3 is a promising photocatalyst with optical band gap of~2.6 eV.…”

“…Crystals 2020, 10, 273 2 of 18 potential applications such as photocatalysts, magnetic data storage, gas sensors, lithium-ion batteries, spintronics and ferrofluids [1,[5][6][7][8]. The atomic arrangement possessed by hematite is similar to that of corundum α-Al 2 O 3 structure, in which anions (O 2− ions) are stacked in hexagonal close-packed arrangement (framework by the regular alternating layers, in each layer the atoms lie at the vertices of a series of equilateral triangles and the atoms overlie one another in one layer), with cations (Fe 3+ ) occupying 2/3 octahedral coordination geometry [9].…”

Exploration of Ag decoration and Bi doping on the photocatalytic activity α‐Fe2O3 under simulated solar light irradiation

“…Ag and Bi doped α‐Fe 2 O 3 nanoparticles (Ag/Bi‐Fe 2 O 3 ) were prepared by a simple co‐precipitation method as follows . The atomic percentage of Ag and Bi was fixed at 5 %.…”

“…The details of characterization were already described in our previous report . The crystalline phases were analyzed by a Bruker D8 Advance X‐ray diffractometer (XRD) at 40 kV and 40 mA (CuKa irradiation, k = 1.542 Å).…”

“…The COD was measured using the dichromate method as follows: 20 mL of RB solution was taken in a round bottom flask with a reflux condenser. To this container, 10 mL of K 2 Cr 2 O 7 (0.25 N) solution was added.…”