Commercialization of single-source precursors: Applications, intellectual property, and technology transfer

Hepp, Aloysius F.; Harris, Jerry D.; Apblett, Allen W.; Barron, Andrew R.

doi:10.1016/b978-0-12-820340-8.00008-3

Cited by 3 publications

(1 citation statement)

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“…Single-source precursors (SSPs) are defined as solitary species that contain all the elements required for a synthetic reaction. − In our case, a SSP for BiOX would contain Bi, O, and X within one species. SSPs have broad applications, including chemical vapor deposition of films, intermetallic nanoparticle synthesis, and industrial manufacturing of complex metal oxides and chalcogenides. − The benefits of SSPs over their multisource counterparts include improved homogeneity, stoichiometric control, no differences in precursor rates of vaporization, reaction, or nucleation, and most importantly to us, the molecular combination of incompatible functional groups. ,, …”

Section: Introductionmentioning

confidence: 99%

Single-Source Precursors for the Controlled Aqueous Synthesis of Bismuth Oxyhalides

et al. 2023

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Bismuth oxyhalides are a promising class of photocatalysts for harvesting solar energy. These materials are often synthesized in aqueous media with poor synthetic control resulting from the extremely fast nucleation and growth rates of the particles. These fast rates are caused by the rapid precipitation of bismuth salts with free halide ions. We have developed watersoluble precursors combining bismuth with either chlorine or bromine atoms in the same metal−organic complex. With the application of heat, halide ions are released, which then precipitate with bismuth ions as BiOX (X = Cl, Br). By controlling the halide ion formation rate, the nucleation and growth rates of BiOX materials can be tuned to provide synthetic control. The diverse potential of these precursors is demonstrated by synthesizing BiOX in three ways: aqueous colloidal synthesis, solid-state decomposition, and fabrication of films of BiOX via spray pyrolysis of the aqueous precursor solutions. These broadly applicable single-source precursors will enhance the ability to synthesize future BiOX materials with controlled morphologies.

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