1 research outputs found
Synthesis and Materials Chemistry of Bismuth <i>Tris</i>-(di-i-propylcarbamate): Deposition of Photoactive Bi<sub>2</sub>O<sub>3</sub> Thin Films
The
bismuth carbamate BiÂ(O<sub>2</sub>CNPr<sup>i</sup><sub>2</sub>)<sub>3</sub>, a tetramer in the solid-state, has been synthesized and
used to deposit mixtures of bismuth oxides by aerosol-assisted chemical
vapor deposition (AACVD). The nature of the deposited oxide is a function
of both temperature and run-time. Initially, δ-Bi<sub>2</sub>O<sub>3</sub> is deposited, over which grows a thick layer of β-Bi<sub>2</sub>O<sub>3</sub> nanowires, the latter having an increasing degree
of preferred orientation at higher deposition temperatures. The photocatalytic
activity of a thin film of δ-Bi<sub>2</sub>O<sub>3</sub> for
the degradation of methylene blue dye was found to be similar to that
of a commercial TiO<sub>2</sub> film on glass, while the film overcoated
with β-Bi<sub>2</sub>O<sub>3</sub> nanowires was less active.
Exposure of BiÂ(O<sub>2</sub>CNPr<sup>i</sup><sub>2</sub>)<sub>3</sub> to controlled amounts of moist air affords the novel oxo-cluster
Bi<sub>8</sub>(O)<sub>6</sub>(O<sub>2</sub>CNPr<sup>i</sup><sub>2</sub>)<sub>12</sub>, whose structure has also been determined