Influences of silver halides AgX (X = Cl, Br, and I) on magnesium bismuth oxide photocatalyst in methylene blue degradation under visible light irradiation

Enhanced adsorptive removal of indigo carmine dye by bismuth oxide doped MgO based adsorbents from aqueous solution: equilibrium, kinetic and computational studies

“…22 Magnesium bismuth oxides composites with silver iodide were prepared by Dai et al, as a photocatalytic active agent to remove some dyes from water, the composite showed a performance of 92.3-99.5% degradation within 10 min under visible light irradiation. 23 The use of density functional theory has become increasingly common among chemists, providing them with a useful tool to study the mechanism of interaction between two chemical species 24,25 in particular the adsorption of molecules on the surface of a solid, [26][27][28][29] thus the rationalization of the doping mechanism of some metal oxides. [30][31][32] The current study aims to fabricate magnesium bismuth oxide nanoparticles in different proportions and explore their removal capacities as environmentally safe sorbent for removing indigo carmine hazardous dye.…”

Enhanced Visible Light Photocatalytic Degradation of Methylene Blue by CdS-ZnS-BiPO4 Nanocomposites Prepared by a Solvent-Assisted Heating Method

“…The variations in the MB concentration (C/C0), where C0 is the initial MB concentration, and C is the MB concentration at time t, with the irradiation time for BiPO4, CdS-BiPO4, ZnS-BiPO4, and The photocatalytic performance of BiPO 4 , CdS-BiPO 4 , ZnS-BiPO 4 , and CdS-ZnS-BiPO 4 nanocomposites was evaluated by measuring the rate of MB degradation (20 ppm) under visible irradiation. According to our previous experience, the degradation efficiency decreased with increasing dye concentration [23,[30][31][32][33][34]. This is because the excessive coverage of dye on the active surface of photocatalysts leads to a decrease in the photocatalytic activity.…”

“…The prepared BiPO 4 , CdS-BiPO 4 , ZnS-BiPO 4 , and CdS-ZnS-BiPO 4 nanocomposites were used to degrade MB under visible light irradiation in a PCX-50A multichannel photochemical reaction system equipped with an LED disc (400-800 nm, 0.42 W/cm 2 , Beijing Perfectlight Technology Co., LTD., Beijing, China) (Figure A1) [35][36][37], and their photocatalytic activity was evaluated based on our earlier reports with modifications [23,[30][31][32][33][34]. Prior to irradiation, 50 mL of 20 mg/L MB (20 ppm) aqueous solution containing 0.20 g of nanocomposites was stirred in the dark for 30 min.…”

“…The charge separation efficiency and recombination rate for the prepared nanocomposites were evaluated based on our earlier reports [23,[30][31][32][33][34]. For determination of recombination rate of e − /h + pairs, PL spectra were collected using a Varian Cary Eclipse fluorescence spectrometer (Agilent Technologies, Inc., Santa Clara, CA, USA).…”

Silver Halide-Based Nanomaterials in Biomedical Applications and Biosensing Diagnostics

“…AgX belongs to semiconductors, and the bandgaps of AgCl, AgBr, and AgI are 3.28, 2.89, and 2.22 eV, respectively [77]. Pure AgX as a semiconductor has a low photocatalytic efficiency under ambient light irradiation [78][79][80]. Nevertheless, Ag nano-dots can still swiftly grow on the surface of AgX even with weak light irradiation [8,54,[65][66][67]69], which generates Ag/AgX nanocomposites.…”