Generation of novel n-p-n (CeO2-PPy-ZnO) heterojunction for photocatalytic degradation of micro-organic pollutants

Generation of novel n-p-n (CeO2-PPy-ZnO) heterojunction for photocatalytic degradation of micro-organic pollutants.

Metal oxides/sulfides have been considered as promising anode candidates for use in next-generation lithium-ion batteries (LIBs), but the large volume changes and poor electron and ion conductivities limit their practical applications. Here, twin-born Fe3O4/FeS/carbon nanosheets (TB-FeOSC-NS) were precisely fabricated for the first time by using MIL-88b(Fe) as a self-sacrificing template. By adjusting the amount of citric acid and the annealing temperature, the structure and phase composition could be accurately controlled. Benefitting from its unique structure, TB-FeOSC-NS can provide an abundant contact interface with electrolytes and active sites for redox reactions, providing a short diffusion path for electrons and ions. Therefore, as an anode material for use in LIBs, the TB-FeOSC-NS electrode exhibits admirable electrochemical performance, including a high specific capacity, excellent cycling stability, and superior rate performance, with a high capacity of 400 mA h g−1 at an ultrahigh current density of 20 A g−1. More importantly, this work deepens our understanding of the precise synthesis of heterostructured materials for electrochemical energy storage and the synergistic modulation of morphologies, phase compositions, and interfaces.

The precise synthesis of twin-born Fe3O4/FeS/carbon nanosheets for high-rate lithium-ion batteries

Abstract Ta 2 O 5 films have been successfully fabricated on tantalum substrate via a facile hydrothermal route and characterized by a series of spectroscopic techniques. The morphology of the as-prepared Ta 2 O 5 films showed great impacts on the photocatalytic activity. Without any co-catalysts, the as-prepared Ta 2 O 5 films on tantalum exhibited remarkable photocatalytic activity and recyclability both in the degradation of rhodamine B and in the hydrogen production from water splitting under UV irradiation.

Short communication Fabrication of Ta2O5 films on tantalum substrate for efficient photocatalysis

The current investigation intends to devise a couple stress continuum-based moving Kriging meshfree shell model for axial nonlinear buckling and postbuckling responses of random checkerboard composite cylindrical microshells. Accordingly, the graphene nanoplatelet reinforcements are supposed to be randomly dispersed based upon a checkerboard scheme within the resin matrix, the effective material properties of which are estimated based upon a probabilistic method. The modified couple stress continuum elasticity is implemented into the higher-order shear deformation shell theory incorporating geometrical nonlinearity. The established microstructural-dependent shell model is then numerically analyzed via the moving Kriging meshfree technique with the ability to take the essential boundary conditions into account accurately by employing proper moving Kriging shape function. By tracing the postbuckling paths, the snap-through phenomenon is observed. It is found that for a higher graphene nanoplatelet volume fraction, the significance of the stiffening character associated with the rotation gradient tensor increases. Furthermore, for a specific value of graphene nanoplatelet volume fraction, by reducing the length to width aspect ratio of graphene nanoplatelet reinforcements, the role of couple stress size dependency in the critical buckling load and critical shortening of an axially compressed cylindrical microshell becomes more important. • Development a size-dependent shell model including rotation gradient tensor. • Probabilistic-based homogenization scheme for random checkerboard reinforced composites. • Moving Kriging meshfree interpolation for size-dependent shell model. 

S. Swathi

Papers

Annealing temperature effect on cobalt ferrite nanoparticles for photocatalytic degradation.

Cancer targeting potential of bioinspired chain like magnetite (Fe3O4) nanostructures

Hydrothermally synthesized α-MnS nanostructures for electrochemical water oxidation and photocatalytic hydrogen production

Gadolinium doped CeO2 for efficient oxygen and hydrogen evolution reaction

Branched and unbranched ZnO nanorods grown via chemical vapor deposition for photoelectrochemical water-splitting applications