BiOX (X = Cl, Br, I) photocatalytic nanomaterials: Applications for fuels and environmental management

Poly(sodium 4‐styrenesulfonate) Assisted Room‐Temperature Synthesis for the Mass Production of Bismuth Oxychloride Ultrathin Nanoplates with Enhanced Photocatalytic Activity

“…[1][2][3][4][5][6] As one of emerging and promising semiconductor materials, bismuth oxychloride (BiOCl) with unique layered crystal configuration has attracted considerable attention due to its excellent photocatalytic performance and facile preparation. [3,[7][8][9][10] In the last few years, a variety of synthetic strategies including sputtering and dipping process, [11] template-assisted synthesis, [12] hydrothermal and solvothermal routes, [7][8][9][13][14][15][16][17][18][19][20] sonochemical approaches, [8,21] hydrolysis methods, [22,23] electrospinning process, [24] and precipitation methods [8,25,26] have been developed for the fabrication of BiOCl nanostructures by using aqueous or/and organic solvent as reaction media. Using these liquid-phase methods, BiOCl nanostructures with various morphologies such as nanowires, [11] nanofibers, [24] nanoplates, [13,[16][17][18][20][21][22]26] nanobelts, [19] nanoflakes, [23] mic...…”

Ag2CO3 Decorating BiOCOOH Microspheres with Enhanced Full-Spectrum Photocatalytic Activity for the Degradation of Toxic Pollutants

“…The exploration of a novel full-spectrum-driven photocatalyst that can make the best use of sunlight has an important value in its practical application. Recently, great attention has been paid to Bi-based photocatalysts [4,5,6,7,8,9,10,11]. Among them, BiOCOOH is a kind of layered Bi-based oxide, built from [Bi 2 O 2 ] 2+ fluorite-like layers intercalating by formic acid [12,13].…”

Photocatalytic BiOX Mortars under Visible Light Irradiation: Compatibility, NOx Efficiency and Nitrate Selectivity

“…Provided that BiOCl-cem can only absorb a very small amount of visible light because of its wide band, its higher photocatalytic activity under visible light might be ascribed to the presence of oxygen vacancies, as in the case of TiO 2 -cem [46,56,57]. Furthermore, the VB potential of BiOCl provides strong oxidation ability and the special crystal structures of BiOX whose [Bi 2 O 2 ] 2+ slabs and interleaved halogen-ion layers are favorable to the formation of a self-built internal static electric field, which is very beneficial to the separation and migration of photo-induced electrons and holes [22,55,56,58]. The BiOI-cem sample showed low visible light activity (4.8%), even almost comparable with TiO 2 -cem (4.3%).…”

“…These layered materials possess several extraordinary advantages, such as high surface area, more surface-active sites, superior electron mobility, and good electron transfer, endowing them with promising potential for photocatalytic applications. Of these layered materials, bismuth oxyhalides (BiOX, X = Cl, Br, and I) belong to a new class of promising layered materials because of their unique layered-structure-mediated fascinating physicochemical properties and suitable band-structure, as well as their high chemical and optical stability, nontoxicity, low cost, and corrosion resistance [21,22]. Among all of BiOX materials, BiOI with band gap energy of 1.7 eV exhibits the highest visible light-driven photocatalytic activity attributed to its smaller band gap [21,23,24].…”