Theoretical and experimental investigations of BiOCl for electrochemical adsorption of cesium ions

Abstract

BiOCl was found to have excellent electrochemical adsorption properties for cesium ions (Cs+) in electrochemically switched ion exchange (ESIX).

Realization of Oriented and Nanoporous Bismuth Chalcogenide Layers via Topochemical Heteroepitaxy for Flexible Gas Sensors

“…The energy levels of BiOCl and Bi 2 Se 3 (Figure S4, 5) were determined with UV-vis absorption spectra (Figure S6) and UV photoelectron spectroscopy (UPS, Figure S7). The results show that while Bi 2 Se 3 shows n-type semiconducting behavior, BiOCl is a p-type semiconductor, consistent with previous reports [47,48]. The electronic properties of the heterostructure were further studied with first-principle calculations based on density functional theory (DFT).…”

BiOI with Inherent Photo/Electric Biactivity Recovery I– by Novel Photoassisted Electrochemically Switched Ion Exchange Technology

“…This unique crystal and electronic structure make BiOX (X = Cl, Br, I) have decent photocatalytic properties and it has been efficiently used in the photocatalytic degradation of organic pollutants . Moreover, in our previous research, BiOX has been used extensively in the application of ESIX. − ,, BiOI has shown remarkable potential in P-ESIX because of its suitable energy band gap (∼1.8 eV) and electrochemical stability. , BiOI is excitable by visible light and accelerates the separation of electron–hole pairs. Furthermore, I – was released/captured from the layered [(Bi 2 O 2 ) 2+ ] selectivity when a reduction/oxidation potential was applied to the film. , For the above reasons, BiOI could be used in the P-ESIX system to improve the adsorption capacity of I – .…”

“…41 Moreover, in our previous research, BiOX has been used extensively in the application of ESIX. [30][31][32]37,42 BiOI has shown remarkable potential in P-ESIX because of its suitable energy band gap (∼1.8 eV) and electrochemical stability. 43,44 BiOI is excitable by visible light and accelerates the separation of electron−hole pairs.…”