An Account on BiVO4 as Photocatalytic Active Matter

Photocatalytic materials are gaining popularity and research investment for developing light-driven micromotors. While most of the early work used highly stable TiO2 as a material to construct micromotors, mostly in combination with noble metals, other semiconductors offer a wider range of propertie...

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Autores: Heckel, Sandra, Wittmann, Martin, Reid, Marc, Villa, Katherine, Simmchen, Juliane
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2072/537487
Acceso en línea:http://hdl.handle.net/2072/537487
https://doi.org/10.1021/accountsmr.3c00021
Access Level:acceso abierto
Palabra clave:Química
54
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spelling An Account on BiVO4 as Photocatalytic Active MatterHeckel, SandraWittmann, MartinReid, MarcVilla, KatherineSimmchen, JulianeQuímica54Photocatalytic materials are gaining popularity and research investment for developing light-driven micromotors. While most of the early work used highly stable TiO2 as a material to construct micromotors, mostly in combination with noble metals, other semiconductors offer a wider range of properties, including independence from high-energy UV light. This review focuses on our work with BiVO4 which has shown promise due to its small band gap and resulting ability to absorb blue light. Additionally, this salt's well-defined crystal structures lead to exploitable charge separation on different crystal facets, providing sufficient asymmetry to cause active propulsion. These properties have given rise to fascinating physical and chemical behaviors that show how rich and variable active matter can become. Here, we present the synthesis of different BiVO4 microparticles and their material properties that make them excellent candidates as active micromotors. A critical factor in understanding inherently asymmetric micromotors is knowledge of their flow fields. However, due to their small size and the need to use even smaller tracer particles to avoid perturbing the flow field, measuring flow fields at the microscale is a difficult task. We also present these first results, which allow us to demonstrate the correlation between chemical reactivity and the flow generated, leading to active motion. Due to the nontoxic nature of BiVO4, these visible-light-responsive microswimmers have been used to study the first steps toward applications, even in sensitive areas such as food technology. Although these initial tests are far from being realized, we have to face the fact that a single microswimmer will not be able to perform macroscale tasks. Therefore, we present the reader with the first simple studies of collective motion, hoping for many new contributions to the field. The one-step synthesis of BiVO4 clearly paves the way for studies requiring large numbers of particles. We predict that the combination of promising applications for a nontoxic material which is readily synthesized in large quantities will contribute pivotally to advance the field of active matter beyond the proof-of-concept stage.ACS Publications2024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion13 p.application/pdfhttp://hdl.handle.net/2072/537487https://doi.org/10.1021/accountsmr.3c00021RECERCAT (Dipòsit de la Recerca de Catalunya)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésJ.S., M.W., and S.H. acknowledge a Freigeist grant (no. 91619) from the Volkswagen foundation and a Fulbright Cottrell Award, which partially supported this studyM.W. and J.S. acknowledge the DFG/ANR project RODROLLS.K.V. acknowledges the support from the Spanish Ministry of Science (MCIN/AEI/10.13039/501100011033) and the European Union (Next generation EU/PRTR) through the Ramón y Cajal grant, RYC2021-031075-I.CC-BY 4.0info:eu-repo/semantics/openAccessoai:recercat.cat:2072/5374872026-05-29T05:05:01Z
dc.title.none.fl_str_mv An Account on BiVO4 as Photocatalytic Active Matter
title An Account on BiVO4 as Photocatalytic Active Matter
spellingShingle An Account on BiVO4 as Photocatalytic Active Matter
Heckel, Sandra
Química
54
title_short An Account on BiVO4 as Photocatalytic Active Matter
title_full An Account on BiVO4 as Photocatalytic Active Matter
title_fullStr An Account on BiVO4 as Photocatalytic Active Matter
title_full_unstemmed An Account on BiVO4 as Photocatalytic Active Matter
title_sort An Account on BiVO4 as Photocatalytic Active Matter
dc.creator.none.fl_str_mv Heckel, Sandra
Wittmann, Martin
Reid, Marc
Villa, Katherine
Simmchen, Juliane
author Heckel, Sandra
author_facet Heckel, Sandra
Wittmann, Martin
Reid, Marc
Villa, Katherine
Simmchen, Juliane
author_role author
author2 Wittmann, Martin
Reid, Marc
Villa, Katherine
Simmchen, Juliane
author2_role author
author
author
author
dc.subject.none.fl_str_mv Química
54
topic Química
54
description Photocatalytic materials are gaining popularity and research investment for developing light-driven micromotors. While most of the early work used highly stable TiO2 as a material to construct micromotors, mostly in combination with noble metals, other semiconductors offer a wider range of properties, including independence from high-energy UV light. This review focuses on our work with BiVO4 which has shown promise due to its small band gap and resulting ability to absorb blue light. Additionally, this salt's well-defined crystal structures lead to exploitable charge separation on different crystal facets, providing sufficient asymmetry to cause active propulsion. These properties have given rise to fascinating physical and chemical behaviors that show how rich and variable active matter can become. Here, we present the synthesis of different BiVO4 microparticles and their material properties that make them excellent candidates as active micromotors. A critical factor in understanding inherently asymmetric micromotors is knowledge of their flow fields. However, due to their small size and the need to use even smaller tracer particles to avoid perturbing the flow field, measuring flow fields at the microscale is a difficult task. We also present these first results, which allow us to demonstrate the correlation between chemical reactivity and the flow generated, leading to active motion. Due to the nontoxic nature of BiVO4, these visible-light-responsive microswimmers have been used to study the first steps toward applications, even in sensitive areas such as food technology. Although these initial tests are far from being realized, we have to face the fact that a single microswimmer will not be able to perform macroscale tasks. Therefore, we present the reader with the first simple studies of collective motion, hoping for many new contributions to the field. The one-step synthesis of BiVO4 clearly paves the way for studies requiring large numbers of particles. We predict that the combination of promising applications for a nontoxic material which is readily synthesized in large quantities will contribute pivotally to advance the field of active matter beyond the proof-of-concept stage.
publishDate 2024
dc.date.none.fl_str_mv 2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/2072/537487
https://doi.org/10.1021/accountsmr.3c00021
url http://hdl.handle.net/2072/537487
https://doi.org/10.1021/accountsmr.3c00021
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv J.S., M.W., and S.H. acknowledge a Freigeist grant (no. 91619) from the Volkswagen foundation and a Fulbright Cottrell Award, which partially supported this study
M.W. and J.S. acknowledge the DFG/ANR project RODROLLS.
K.V. acknowledges the support from the Spanish Ministry of Science (MCIN/AEI/10.13039/501100011033) and the European Union (Next generation EU/PRTR) through the Ramón y Cajal grant, RYC2021-031075-I.
dc.rights.none.fl_str_mv CC-BY 4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv CC-BY 4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 13 p.
application/pdf
dc.publisher.none.fl_str_mv ACS Publications
publisher.none.fl_str_mv ACS Publications
dc.source.none.fl_str_mv RECERCAT (Dipòsit de la Recerca de Catalunya)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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