Novel Synthesis of LaFeO3 Nanostructure Dendrites: A Systematic Investigation of Growth Mechanism, Properties, and Biosensing for Highly Selective Determination of Neurotransmitter Compounds

TLDR: In this article, single-crystalline novel LaFeO3 dendritic nanostructures are synthesized by a well-controlled, surfactant-assisted facile hydrothermal process.

Abstract: Single-crystalline novel LaFeO3 dendritic nanostructures are synthesized by a well-controlled, surfactant-assisted facile hydrothermal process. The morphology of the material is investigated by high-resolution transmission and scanning electron microscopy. The crystal nature and chemical composition of LaFeO3 dendritic nanostructures are revealed from the X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy. Structural characterizations imply the preferential growth along the [121] direction by oriented attachment of LaFeO3 nanoparticles in the diffusion limit, leading to the formation of LaFeO3 dendrites. The microscopic studies confirm the formation of dendrites with a length of 3–4 μm, a branch diameter of 80 nm, and a length of 1–1.5 μm. The possible growth mechanism of the dendritic morphology is discussed from the aspect of diffusion and oriented attachment based on experimental results. Further, the electrochemical measurements performed on LaFeO3 dendritic nanostructures dep...