Fabrication of nanocrystalline LaFeO3: An efficient sol–gel auto-combustion assisted visible light responsive photocatalyst for water decomposition

Peculiarities of LaFeO3 nanocrystals formation via glycine-nitrate combustion

“…4(a). According to the shown data, the samples synthesized at a glycine-nitrate ratio close to the stoichiometric point (G/N = 0.4 -0.8) have a relatively low specific surface area of about 10 m 2 /g, which agrees with data reported previously [10,24]. At G/N below 0.4, a drastic decrease of the specific surface area to 0.5 m 2 /g (G/N = 0.1) is observed, which is related to the replacement of the bulk combustion mode inherent to the stoichiometric reaction by the smoldering mode.…”

“…[2][3][4][5][6][7][8][9]. Lately, materials based on LaFeO 3 are also considered as promising materials to obtain hydrogen by the photocatalytic decomposition of water under visible light irradiation [10][11][12]. In this case, the efficiency and the rate of H 2 generation are defined by the value of a specific surface area of photocatalyst and therefore the use of nanoscale lanthanum orthoferrite powders can be more advantageous relative to coarse-crystalline ones.…”

“…The most important factor among them is the redox composition of the initial solution, which was previously shown [21][22][23] to define the combustion conditions and temperature in the reaction zone. Despite much research [10,24,25] being focused on obtaining lanthanum orthoferrite by solution combustion synthesis, the influence of redox composition on processes of LaFeO 3 nanocrystal formation has not been studied in detail. Thus, the theoretical and practical goals of the present paper are the investigation of the influence of redox composition on LaFeO 3 formation and synthesis of lanthanum orthoferrite nanopowders with a high specific surface area.…”

Superparamagnetic Behaviour and Induced Ferrimagnetism of LaFeO3 Nanoparticles Prepared by a Hot-Soap Technique

“…The excellent sensitivity and selectivity towards various toxic gases such as CO and NOx are observed as well [4]. Moreover, LaFeO3 nanoparticles exhibited good photocatalytic properties such as water decomposition and dye degradation under visible light irradiation [5,6]. These properties are enhanced by the homogeneity and high surface area of the fabricated LaFeO3 particles.…”

Improvement of the Photocatalytic Water Splitting Activity of Silver Tantalate by Photodeposited Platinum and Cobalt-Oxide Nanoclusters

“…To date, a considerable number of photocatalysts have been developed to construct water splitting systems including one-step [2][3][4][5][6][7][8][9][10][11] and two-step 12-17 photoexcitation systems. However, in both systems, the water oxidation process is currently considered to be a key bottleneck in water splitting.…”