Morphology Regulation Mechanism and Enhancement of Photocatalytic Performance of BiOX (X = Cl, Br, I) via Mannitol-Assisted Synthesis

BiOX (X = Cl, Br, I) photocatalysts with dominant (110) facets were synthesized via a mannitol-assisted solvothermal method. This is the first report on exposed facets-, size-, and defects-controlled synthesis of achieved by mannitol. polyol alcohol acted simultaneously as solvent, capping agent, and/or soft template. The mannitol concentration new morphology surface properties was investigated in detail. At lowest tested, structure-directing causing unification nanoparticles, while at higher concentrations, it functioned solvent effect facet defects (Bi(3?x)+, Bi4+, Bi5+) photocatalytic activity nanomaterials under UV–Vis irradiation evaluated oxidation Rhodamine B (RhB) 5-fluorouracil (5-FU), an anticancer drug, reduction Cr(VI). Additionally, influence crucial factors formation discussed extensively, mechanism proposed. These studies presented simple method for synthesizing without any additional surfactants or shape control agents good activity. study also provided better understanding effects conditions crystal growth.