Synthesis, Characterization and Catalytic Properties of Perovskite LaFeO₃Nanoparticles

Abstract

Abstract. Orthorhombic structure of rare earth perovskite-type oxide LaFeO 3 nanoparticles with light absorption properties in the visible range was prepared by co-precipitation method. The prepared nanoparticles was characterized by several measurements such as X-ray diffraction, energy dispersive X-ray, field emission scanning electron microscope, diffuse reflectance spectroscopy, vibrating sample magnetometer and electron spin resonance spectroscopy. Methylene blue was taken as the model pollutant to evaluate its photocatalytic, sonocatalytic, photosonocatalytic degradation in the presence of LaFeO 3 nanoparticles. The degradation of methylene blue followed the pseudo-first order model in all three processes. The observed rate constants indicate that the photosonocatalytic was faster than the respective individual. Radical scavenger experiments revealed that holes were the predominant oxidative species involved in all three processes.

Autocombustion‐Promoted Synthesis of Lanthanum Iron Oxide: Application as Heterogeneous Catalyst for Synthesis of Piperidines, Substituted Amines and Light‐Assisted Degradations

“…Moreover, LFO are known to show multiferroic behaviour that is the co-existence of both ferroelectric and ferro/ferri-magnetic or antiferromagnetic properties. [4] Different methodologies are there in the literature to synthesize LFO NPs like co-precipitation method, [5] solution autocombustion method, [6] sonochemical method, [7] sol-gel technique, [8] hydrothermal method, [9] Reverse Microemulsion method, [10] polymerizable complex method, [11] thermal decomposition, [12] solid-state reaction [13] and many more. Among these, the solution autocombustion method offers lots of advantages.…”

The effect of different graphene surface area on photocatalytic activity of LaFeO3 nanoparticles

“…LaCl3.7H2O (Merck), FeCl2.4H2O (Merck), and NaOH (Merck) were used to synthesize LaFeO3 nanoparticle based on our previous work [10]. Nanographene Platelets (Angstron Materials) and Graphene (Angstron Materials) with different specific surface areas of 30 m 2 /g and 400 m 2 /g were used to synthesize the composites which were labeled with LaFeO3/SA-1 and LaFeO3/SA-2, respectively.…”

Sustainable Synthesis Strategies: A Comparative Life Cycle Perspective on LaFeO3 Nanoparticles

“…14 The sonication methods are promising alternatives to conventional methods due to its decreased time and energy requirements. 15 However, the utilization of complex and energy-intensive reagents in mainstream synthesis methods have influenced researchers in the direction of "green synthesis". Plant extracts have been successfully used as reducing agent or stabilizing agents in this process.…”

“…In addition, vapor phase methods of LFO bulk synthesis were reported that utilize spray–flame pyrolysis . The sonication methods are promising alternatives to conventional methods due to its decreased time and energy requirements . However, the utilization of complex and energy-intensive reagents in mainstream synthesis methods have influenced researchers in the direction of “green synthesis”.…”