B-doped CBO solid solution: Synthesis, characterization, and their application in water splitting

• Published in: Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 2024-06, Vol.451, p.115475, Article 115475
• Main Authors: Ansari, Kahkashan, Sato, Atsushi, Hattori, Ryosuke, Matsuishi, Kiyoto, Marumoto, Kazuhiro, Chouhan, Neelu
• Format: Article
• Language: English
• Subjects: Boron doping; Cerium-bismuth oxides; Combustion method; Solid solution; Water splitting
• ISSN: 1010-6030; 1873-2666
• DOI: 10.1016/j.jphotochem.2024.115475

[Display omitted] •B-doped CBO solid solutions were synthesised by combustion method.•Crystallized in a fluorite FCC phase with particle sizes of almost 13–32 nm.•Maximum hydrogen production was observed for 8 % B-doped CBO i.e. 332.43 µmol g−1 h−1.•The relative oxygen vacancy AID/AF2g is the H2 generation efficiency deciding factor.•Mechanism for water splitting using B-doped CBO is proposed. A series of boron-doped cerium − bismuth oxide (CBO) solid solutions were fabricated by combustion method by using unimolecular mixture of nitrides of cerium and bismuth in presence of fuel i.e., urea at low temperature 300 °C. The combustion product possesses Bi3+ionand Ce3+ and crystallized in a fluorite FCC phase . As-produced fine yellow powder crystallizein almost 13–32 nm size needle-shape particle, clustered in cotton-wool form. The photocatalytic water splitting activity was observed for the entire B-doped CBO series and the maximum hydrogen production was observed for 8 % B-doped CBO sample i.e.332.43 µmol g−1 h−1.