Publications by Julieta Soledad Riva

Visible-light driven water oxidation and oxygen production at soft interfaces

Hubert Girault, Astrid Johana Olaya Avendano, Jorge Gustavo Uranga, Julieta Soledad Riva, Sara Natalia Moya Betancourt

The visible light driven water oxidation reaction (WOR) by the organic electron acceptor 2,3,5,6-tetrafluoro-7,7,8,8-tetracyano-quinodimethane (TCNQF(4)) was studied at the water|butyronitrile interface. The WOR was performed at neutral pH, and without any ...

Royal Society of Chemistry2022

Water photo-oxidation on self-assembled organic/Co3O4 metal junctions in biphasic systems

Hubert Girault, Astrid Johana Olaya Avendano, Julieta Soledad Riva

A microwater vertical bar butyronitrile (W vertical bar BCN) interface was used to study the effect of the interfacial chemical polarization on the efficiency of the visible-light induced water oxidation reaction (WOR) by the electron acceptor/ photosensit ...

PERGAMON-ELSEVIER SCIENCE LTD2022

Visible-Light-Driven Water Oxidation on Self-Assembled Metal-Free Organic@Carbon Junctions at Neutral pH

Hubert Girault, Astrid Johana Olaya Avendano, Julieta Soledad Riva, Dominika Baster, Wanderson Oliveira Da Silva

Sustainable water oxidation requires low-cost, stable, and efficient redox couples, photosensitizers, and catalysts. Here, we introduce the in situ self-assembly of metal-atom-free organic-based semiconductive structures on the surface of carbon supports. ...

AMER CHEMICAL SOC2021

A Self-Assembled Organic/Metal Junction for Water Photo-Oxidation

Hubert Girault, Astrid Johana Olaya Avendano, Natalia Gasilova, Jonnathan Cesar Hidalgo Acosta, Victor Costa Bassetto, Terumasa Omatsu, Julieta Soledad Riva

We report the in situ self-assembly of TTF, TTF•+, and BF4 − or PF6 − into p-type semiconductors on the surface of Pt microparticles dispersed in water/acetonitrile mixtures. The visible light photoactivation of these selfassemblies leads to water oxidatio ...

2019

Standard ion transfer potential at the water|butyronitrile interface

Hubert Girault, Astrid Johana Olaya Avendano, Victor Costa Bassetto, Julieta Soledad Riva

Butyronitrile is an organic solvent stable enough to be used in photochemical reactions at liquid/liquid interfaces. However, it provides a rather short polarisation window making the analysis of ion transfer across the water|butyronitrile interface challe ...

2019