Produção Nacional
Revisado por pares
Synthesis and photothermal performance of non-stoichiometric molybdenum oxide (MoO 3− x ) prepared by gamma radiation
2023; Royal Society of Chemistry; Volume: 52; Issue: 24 Linguagem: Inglês
10.1039/d3dt00183k
ISSN1477-9234
AutoresDaniel da Silva Lima, Aldebarã Fausto Ferreira, Stterferson E. Silva, Severino Alves, Felipe L. N. Sousa, W.M. de Azevêdo,
Tópico(s)TiO2 Photocatalysis and Solar Cells
ResumoThis work reports the interaction of γ-rays with MoO3 in several solvents to obtain non-stoichiometric (sub-oxide) MoO3-x through a one-pot synthesis. The effect of different doses of γ-radiation (30-90 kGy) with different protic solvents (water, N,N-dimethylformamide and formic acid) was investigated. Structural modifications were characterized by X-ray diffractometry and scanning electron microscopy while optical properties were investigated by UV-Vis spectroscopy. The analysis of the highly intense (020), (040) and (060) diffraction peaks suggests that there is a reduction in water and formic acid allowing the formation of MoO3-x nanosheets. Additionally, the photothermal response of MoO3-x obtained under different conditions was characterized, and a possible mechanism to explain the interaction of γ-rays with solvents and the oxide structure by oxidative/reductive processes in the solution was proposed.
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