Nanoscale SrFe0.5Ta0.5O3 double perovskite photocatalyst: Low-temperature solvothermal synthesis and photocatalytic NO oxidation performances

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

“…Hematite is considered a paramagnetic material at (temperature > 956 K, its curie temperature; T C ) and weak ferromagnetic that can undergo a phase transition at Morin temperature (T M = 260 K) to antiferromagnetic. Generally, the magnetic property of hematite depends on the particle size, the extent of cations substitution, and the crystallinity (Cornell and Schwertmann, 2003;Zysler et al 2001;Raming et al 2002). Magnetite is ferromagnetic with a Tc = 580 K. However, Magnetic Particles that are ≤ 6 nm are considered superparamagnetic at room temperature.…”

“…Also, the crystal morphology changes the coercivity in the order: Spheres < Cubes < Octahedra as the magnetic axes increase. Thus, Magnetic nanoparticles have Hc = 2.4: 20 KA/m produced by controllable synthesis (Cornell and Schwertmann 2003;Teja and Koh 2009;Meisen and Kathrein 2000). R.N.…”

“…In recent decades, the iron oxides nanoparticles have possessed exceptional features in sorption activities ascribing to their specific surface area, porosity structure, and high magnetic response, resulting in a remarkable sorption ability. In the same context, the iron oxides nanoparticles have existed in nature in diverse compositions, such as the hematite (α-Fe 2 O 3 ) and magnetite (Fe 3 O 4 ), whose suitable properties make them candidates in water remediation such as polymorphism that involves phase transition by temperatureinduction (Abdel Maksoud et al 2020a;Leonel et al 2021;Huang and Chen 2009;Nizamuddin et al 2019;Cornell and Schwertmann 2003;Hammad et al 2021).…”

Recent Progress of Perovskite Oxide in Emerging Photocatalysis Landscape: Water Splitting, CO₂ Reduction, and N₂ Fixation

“…Hydrothermal is mainly employed in the material synthesized in the aqueous solution under the high temperature and the high pressure closed system followed by the steps of separation and post-treating. Cui et al 154 synthesized SrFe0.5Ta0.5O3 nanoparticles with this process by adding sodium oleate to the absolute ethanol containing oleic acid and stirring vigorously ( Fig. 7c).…”

Insights into the role of strontium in catalytic combustion of toluene over La1−xSrxCoO3 perovskite catalysts

“…In the oxygen vacancy studies of non-noble metal catalysts, perovskite oxides (structural formula ABO 3 ), with a vital class of typical non-noble metal catalysts, have been widely investigated due to their better thermal stability, tunable structural properties and excellent redox performance. 15 It is precisely because of the above advantages that perovskite-type oxides have been extensively used in the catalytic oxidation of methane and purification of motor vehicle exhaust. Zhang et al 16 suggested that La 1Àx Sr x Fe 0.8 Al 0.2 O 3 , with Sr doped at the La sites, has good methane activation and oxygen transport properties.…”