Ion exchanged potassium titanoniobate as photocatalyst under visible light

Abstract

Potassium titanoniobate (KTiNbO 5 ) was synthesized by solid-state reaction. The potassium ion of KTiNbO 5 was exchanged for hydrogen ion in hydrochloric acid, and the sample was heat-treated. The shrinkage of the distance between titanoniobate layers that arise from ion-exchange was observed by using X-ray diffraction. The absorption edges of the UV-Vis spectra for the ion exchanged samples which were treated at higher temperature shifted from ultraviolet region to visible region. The change of binding energy was observed by X-ray Photoelectron Spectroscopy.

Probing the pseudo-1-D ion diffusion in lithium titanium niobate anode for Li-ion battery

“…The satellite peak at 530.7 eV is due to oxygen which appears due to physically adsorbed water in the system. 39 The morphology and shape of the as-synthesized Li-Ti-niobate particles are studied using transmission electron microscopy, TEM (Fig. 3).…”

Microstructural control of new intercalation layered titanoniobates with large and reversible d-spacing for easy Na + ion uptake

“…It should be noted that all those titanoniobates maintain the layered structures and channels of (200)- and/or (020)-derived planes due to the gliding of (Ti/Nb)O 6 layers only through a and c directions and the slight unit cell changes (fig. S4) ( 30 , 31 ). Figure 2 (D to G) shows inverse fast Fourier transform (FFT) images and their corresponding line profiles to visualize the change of d-spacing ( c lattice constant).…”

Synthesis and Characterization of KTiNbO5Nano-particles by Novel Polymerizable Complex Method

“…They can be modified through ion-exchange, 1,2 organic intercalation 3,4 or exfoliation-assembly. 5 Based on these modification, a lot of new materials can be constructed, such as photoluminescence material, 6 fast proton conductivity, 7 photocatalysts, 8,9 solid acid catalyst, 10 as well as functional composite material.…”