Intensive photocatalytic activity enhancement of Bi 5 O 7 I via coupling with band structure and content adjustable BiOBr x I 1− x

Light‐Induced Dynamic Stability of Oxygen Vacancies in BiSbO4 for Efficient Photocatalytic Formaldehyde Degradation

“…[ 9–15 ] Until now, many metal oxides or ternary compounds materials, such as TiO 2 , [ 16–19 ] Co 3 O 4 , [ 20–22 ] BiVO 4 [ 23 ] and BiOX (X = Cl, Br, and I), have been synthesized and applied in air purification. [ 24–27 ] However, these photocatalysts are still under the requirements for practical applications on account of their low efficiency and unsatisfactory stability owing to the high recombination of charge carriers, narrow photoabsorption range, and sluggish surface reaction. Hence, it is urgent to design and fabricate more efficient photocatalysts to upgrade the performance.…”

Photocatalytic Reduction on Bismuth-Based p-Block Semiconductors

“…Furthermore, the low concentration of active sites on the exposed accessible surfaces is a major factor that limits their photocatalytic efficiency. 23,[27][28][29] To overcome these scientific and technical limitations, three key strategies have been proposed and developed to improve the photocatalytic efficiencies of Bi-based p-block semiconductors, including constituent adjustment, [30][31][32][33][34][35][36] vacancy engineering, [37][38][39][40][41] and construction of heterostructures. 1,7,[42][43][44] This short review will provide a special overview of this emerging p-block Bibased family of semiconductors for photocatalytic H 2 evolution, CO 2 reduction, and N 2 fixation, including the proposed working mechanisms of the three key strategies, constituent adjustment, vacancy engineering and construction of heterostructures.…”

“…Practical applications of Bi-based p -block semiconductors in photocatalysis remain a challenge, however, due to their low photocatalytic efficiency. , In most cases, the large band gap and unsuitable energetic positions in the band structure can lead to limited visible-light absorption and low solar-conversion efficiency. Furthermore, the low concentration of active sites on the exposed accessible surfaces is a major factor that limits their photocatalytic efficiency. ,− To overcome these scientific and technical limitations, three key strategies have been proposed and developed to improve the photocatalytic efficiencies of Bi-based p -block semiconductors, including constituent adjustment, − vacancy engineering, − and construction of heterostructures. ,,− …”

“…Furthermore, when the ratio of different halides is changed through the hydrothermal method, a new family of BiOM x X 1– x (M, X = F, Cl, Br, I) photocatalysts can be obtained via a self-assembly process, such as BiOCl x Br 1– x, ,, BiOCl x I 1– x, BiOBr x I 1– x, etc. Reports on these have demonstrated that the photocatalytic activities of these semiconductors with hybrid halides are much higher than for those having individual halogens (BiOCl, BiOBr, and BiOI).…”

Regulating Electron-Hole Separation to Promote the Photocatalytic Property of BiOBr<sub>1&#8722x</sub>I<sub>x</sub>/BiOBr Local Distorted Hierarchical Microspheres

“…In recent years, various lamellar bismuth based compounds, e.g. BiO X (X = Br, I, Cl) [7], BiOIO 3 [13], Bi 2 O 2 (OH)(NO 3 ) [14], Bi-M-O (M = V, Mo, W) [15] [16], and so on, have been synthesized and gradually developed to be a series of materials that widely applied in the field of photocatalysis [17]. Compared to the conventional semiconductor photocatalysts, these series of layered bismuthbased materials not only support the forming of an internal electric field to allow the charges diffusion between layers, but also provide abundant distance to polarize orbitals and atoms, enabling the electron-hole pairs separate efficiently [11].…”