Simultaneous removal of Cu²⁺ and Cr³⁺ ions from aqueous solution based on Complexation with Eriochrome cyanine‐R and derivative spectrophotometric method

Abstract

TiO 2 nanoparticles deposited on activated carbon (TiO 2 -NP-AC) was prepared and characterized by XRD and SEM analysis. Subsequently, simultaneous ultrasound- and Cr 3+ ions, respectively. Kinetic evaluation of experimental data showed that the adsorption processes followed well pseudo second order and intraparticle diffusion models.

Fabrication and Characterization of N−TiO2/C/ATP Composite with Enhanced Visible‐Light Photocatalytic Performance for the Degradation of Polyacrylamide in Wastewater

“…The characteristic peaks of TiO 2 in the composite are wider than that of pure TiO 2 , but there is no obvious change in the characteristic peak shape, which indicates that the crystal size of the catalyst sample decreases imply that doping is conducive to the inhibition of crystal growth and the catalyst is successfully compounded. In addition, no obvious characteristic diffraction peak of N oxide was observed in the catalyst, but the angle of the anatase diffraction peaks of TiO 2 in each catalyst shifted to a certain extent from 25.30° to 25.12°, indicating that N atoms may enter the TiO 2 lattice to replace O atoms, which will cause some of the TiO 2 unit cells to be distorted and the diffraction angle to be shifted. Figure is the FT‐IR spectra of ATP and as‐prepared photocatalysts.…”