Proceedings of Materials for Sustainable Development Conference (MAT-SUS) (NFM22)
DOI: https://doi.org/10.29363/nanoge.nfm.2022.158
Publication date: 11th July 2022
Semiconductor nanoparticles (NPs) have attracted a great deal of interest in the last decades due to the increasingly range of applications. However, NPs were produced usually in batch processes and the production on a larger scale is still limited. Among n-type semiconductors, Bismuth vanadate (BiVO4) has emerged as one of the most promising metal oxides as photoanode for water oxidation due to its moderate band gap (2.4 eV), adequate band positions, low-cost, good chemical stability in aqueous medium and environmental inertness.[1] In this regard, our group designed and studied different methodologies for the preparation of this type of photoelectrodes.[2] However, the large-scale synthesis of this material is still limited to the use of conventional batch processes, and it is necessary to achieve high-production yields due to the increasing demand in the field of energy materials. Since the automatization of this process has significant advantages with respect to cost, safety and more precise control of the physical and chemical properties, the emergence of continuous flow technology offers an alternative for preparing inorganic nanoparticles (NPs).[3]
In this communication we show the preparation of BiVO4 NPs by using a simple continuous-flow method based on two liquid peristaltic pumps. The proposed system allows to up-scale the synthesis through a microreactor and contributes to the possible production of large-scale photoelectrodes.
We gratefully acknowledge financial support from the European Commission through the Sun2Chem project under grant agreement No. 884444. We also acknowledge Serveis Centrals d’Instrumentació Científica (SCIC) of the UJI for providing support with the spectroscopic measurements.
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