Recent advances in structural tailoring of BiOX-based 2D composites for solar energy harvesting

Review: applications of the functional photocatalysts BiOX (X = Cl, Br, I) for clean energy, the environment, and future photobiorefineries

“…For example, nanostructures of BiOX were prepared by the hydrolysis of BiX 3 above 60 °C for 6 h, in a higher acidic medium. 25 In another hydrolysis approach for Bi(NO 3 ) 3 with HCl and Na 2 CO 3 , some 21–85 nm nanosheets were prepared at pH 2 and 25 °C in 30 min. 26 The method is simple but needs a higher acidic quantity to control the pH because minor changes in the pH can influence both the catalyst structure and performance.…”

“…For example, it was reported the bismuth-rich Bi 24 O 31 Br 10 photocatalyst could generate H 2 with a production rate of 66.95 mmol g −1 h −1 in a 10% MeOH mixture solution. 25,93 In another study, Bi 4 O 5 Br 2 delivered 170.25 mmol g −1 h −1 H 2 in a solution of 40% MeOH with 1% Pt, 94 which was 1.65 times higher than that of Bi 4 O 5 I 2 , with the latter having a more negative conduction band. With vacancies of Bi and O on the surface, ultrathin nanosheets of Bi 4 O 5 Br generated 238 mmol g −1 h −1 H 2 .…”

“…93 A Bi 12 O 17 Cl 2 heterojunction was developed with a MoS layer, and it was found to be more active for the generation of H 2 . The MoS could receive photoelectrons from Bi 12 O 17 Cl 2 through the Bi–S bond and transport them to its active sites to generate H 2 , with the catalyst activity stable for 100 h. 25,95 In a typical study, a BiOBr/C Schottky junction was used for H 2 generation with a yield of 2850 μmol g −1 h −1 with a parallel junction. 96 However, there is a scarcity of Bi-based BiOX photocatalysts with CB positions negative enough to split water.…”

New Strategies on Green Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol over Oxide Composites

“…Ceria-based oxide catalysts have attracted a lot of interest because of their promising characteristics, especially the remarkable oxidation-reduction properties and increased O 2 storage capability [ 41 , 42 , 43 , 44 , 45 , 46 , 47 ]. According to earlier findings [ 48 ], CeO 2 has a strong catalytic capacity for dehydration processes, indicating that it might be employed in the synthesis of DMC.…”

Facile synthesis of cobalt cluster-CoNx composites: synergistic effect boosts electrochemical oxygen reduction

“…Fuel cells and metal-air batteries are regarded as the next generation of energy conversion and storage devices due to their advantages of high energy density and environmental friendliness. [1][2][3][4] As a huge challenge, the kinetics of the oxygen reduction reaction (ORR), especially at the cathode in fuel cells, is slow, further hampering the energy conversion efficiencies. [5][6][7] The commercial Pt/C, heretofore as the standard ORR electrocatalyst, has been widely used in industrial applications of fuel cells.…”