TiO2 based nanostructured materials modified with Prussian Blue and Transition Metal Disulfides as photocatalysts for CO2 reduction

• Grant number: 16/10939-0
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Effective date (Start): October 15, 2016
• Effective date (End): October 14, 2017
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Principal Investigator: Ubirajara Pereira Rodrigues Filho
• Grantee: Elias Paiva Ferreira Neto
• Supervisor: Marcus Andre Worsley
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Research place: Lawrence Livermore National Laboratory (LLNL), United States
• Associated to the scholarship: 13/24948-3 - CO2 Fixation by SiO2@TiO2 nanoparticles decorated with Iron Ferrocyanide (Prussian Blue) and Ruthenium Ferrocyanide: Toward high Sustainability of Biorefineries and Ammonia Synthesis Plants., BP.DR

Abstract

The CO2 emissions are steadily increasing worldwide as result of the intensive use of fossil fuels and important industrial activities, such as concrete production, biorefineries and steam reforming plants. Photocatalytic processes promoted by semiconductor nanomaterials offer an interesting and sustainable approach for the conversion of CO2 to fuels and value added products. However, although the concept is quite promising, the experimental efficiency of such processes is still very low and research and development of better photocatalysts for CO2 reduction are required in order to explore the full potential of such technology. As part of our research project on the preparation of new TiO2-based nanostructured photocatalyts for CO2 reduction, in this internship project we aim to further enhance the properties of the developed photocatalysts and effectively assess their activity for CO2 photoconversion. Nanostructured TiO2-Prussian Blue photocatalysts supported on silica submicron spheres and on high surface area aerogels will be modified with the transition metal disulfides MoS2 and WS2, which can both imbue TiO2 particles with visible light photoactivity, as well as act as co-catalysts for CO2 reduction. We aim to achieve enhancement of UV/visible-light CO2 photoreduction efficiency by the preparation of nanostructured supported photocatalysts with optimal physical properties and by improvement of electronic and catalytic properties through the synergistically interaction of Prussian Blue and transition metal disulfides modifiers.

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

FERREIRA-NETO, ELIAS PAIVA; WORSLEY, MARCUS ANDRE; RODRIGUES-FILHO, UBIRAJARA PEREIRA. Towards thermally stable aerogel photocatalysts: TiCl4-based sol-gel routes for the design of nanostructured silica-titania aerogel with high photocatalytic activity and outstanding thermal stability. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, v. 7, n. 5, OCT 2019. (13/24948-3, 16/10939-0)

FERREIRA-NETO, ELIAS PAIVA; ULLAH, SAJJAD; PERISSINOTTO, AMANDA PASQUOTO; DE VICENTE, FABIO S.; LIMA RIBEIRO, SIDNEY JOSE; WORSLEY, MARCUS ANDRE; RODRIGUES-FILHO, UBIRAJARA PEREIRA. Prussian blue as a co-catalyst for enhanced Cr(vi) photocatalytic reduction promoted by titania-based nanoparticles and aerogels. NEW JOURNAL OF CHEMISTRY, v. 45, n. 23, p. 10217-10231, JUN 21 2021. (16/10939-0, 13/24948-3, 18/19785-1, 18/01934-0, 15/22828-6)

FERREIRA-NETO, ELIAS PAIVA; WORSLEY, MARCUS ANDRE; RODRIGUES-FILHO, UBIRAJARA PEREIRA. Towards thermally stable aerogel photocatalysts: TiCl4-based sol-gel routes for the design of nanostructured silica-titania aerogel with high photocatalytic activity and outstanding thermal stability. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, v. 7, n. 5, p. 16-pg., 2019-10-01. (16/10939-0, 13/24948-3)

FERREIRA-NETO, ELIAS P.; ULLAH, SAJJAD; SIMOES, MATEUS B.; PERISSINOTTO, AMANDA P.; DE VICENTE, FABIO S.; NOESKE, PAUL-LUDWIG M.; RIBEIROB, SIDNEY J. L.; RODRIGUES-FILHO, UBIRAJARA P.. Solvent-controlled deposition of titania on silica spheres for the preparation of SiO2@TiO2 core@shell nanoparticles with enhanced photocatalytic activity. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, v. 570, p. 293-305, JUN 5 2019. (16/10939-0, 13/24948-3)