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Grant number: 14/09014-7
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): September 01, 2014
Effective date (End): August 31, 2017
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal researcher:Cauê Ribeiro de Oliveira
Grantee:André Esteves Nogueira
Home Institution: Embrapa Instrumentação Agropecuária. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). Ministério da Agricultura, Pecuária e Abastecimento (Brasil). São Carlos , SP, Brazil


The welfare of the population and technological progress of our society depend, in large part, of the development of alternative energy production that are environmentally friendly and capable of mitigating the impacts of other human activities. Reform strategies of greenhouse gases for the production of hydrocarbons, also known as artificial photosynthesis, are among these alternatives. However, further studies are needed of catalysts for these reactions for that might make them viable and energetically favorable, for example, activating these reactions by means of solar radiation. Among the materials of interest, the heteroestruturados have been investigated as an interesting option for photoactivated reactions, due to the increase in its photocatalytic efficiency. However, combinations of oxides most suitable for the process of CO2 reduction and reaction conditions are not still established in the literature. In this context, this project proposes a detailed study about the formation of heterostructures copper oxides (CuO and Cu2O) and niobium (Nb2O5) with different ratios of Cu:Nb, which will be obtained by co-precipitation of salts inorganic assisted by hydrothermal crystallization. A study of the structure and morphology of these heterostructures will be conducted to understand their influence on the photocatalytic properties. The synthesized materials are characterized by X-ray diffraction (XRD), Fourier transform nfrared spectroscopy (FTIR) and Raman spectroscopy. The morphological aspects will be analyzed by field emission scanning electron microscopy (FESEM) and high resolution transmission electron microscopy (HRTEM). The optical properties are investigated by reflectance spectra in the ultraviolet-visible region (DRS/UV-Vis) and photoluminescence spectroscopy (PL). These materials are used in the photoreduction of CO2 in the liquid phase (batch) to obtain compounds such as CO, CH3, CH4, and other (using ultraviolet and visible radiation). Furthermore, the influence of the operating parameters of reaction such as temperature, type of radiation, the initial mass of the photocatalyst and the gas flow will be investigated. Finally, it is expected to perform kinetic studies determined photoreduction of CO2 and determine/quantify the product generated by chromatographic techniques and mass spectrometry.

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Scientific publications (12)
(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)
NOGUEIRA, ANDRE E.; SILVA, GELSON T. S. T.; OLIVEIRA, JESSICA A.; LOPES, OSMANDO F.; TORRES, JULIANA A.; CARMO, MARCELO; RIBEIRO, CAUE. CuO Decoration Controls Nb2O5 Photocatalyst Selectivity in CO2 Reduction. ACS APPLIED ENERGY MATERIALS, v. 3, n. 8, p. 7629-7636, AUG 24 2020. Web of Science Citations: 0.
NOGUEIRA, ANDRE E.; DA SILVA, GELSON T. S. T.; OLIVEIRA, JESSICA A.; TORRES, JULIANA A.; DA SILVA, MITCHELL G. S.; CARMO, MARCELO; RIBEIRO, CAUE. Unveiling CuO role in CO2 photoreduction process - Catalyst or reactant?. Catalysis Communications, v. 137, APR 5 2020. Web of Science Citations: 0.
RIBEIRO, LUCAS S.; NOGUEIRA, ANDRE E.; AQUINO, JOSE M.; CAMARGO, EMERSON R. A new strategy to obtain nano-scale particles of lithium titanate (Li4Ti5O12) by the oxidant peroxo method (OPM). CERAMICS INTERNATIONAL, v. 45, n. 18, A, p. 23917-23923, DEC 15 2019. Web of Science Citations: 0.
NOGUEIRA, ANDRE E.; OLIVEIRA, JESSICA A.; DA SILVA, GELSON T. S. T.; RIBEIRO, CAUE. Insights into the role of CuO in the CO2 photoreduction process. SCIENTIFIC REPORTS, v. 9, FEB 4 2019. Web of Science Citations: 2.
TORRES, J. A.; SILVA, M. C.; LOPES, J. H.; NOGUEIRA, A. E.; NOGUEIRA, F. G. E.; CORREA, A. D. Development of a reusable and sustainable biocatalyst by immobilization of soybean peroxidase onto magnetic adsorbent. International Journal of Biological Macromolecules, v. 114, p. 1279-1287, JUL 15 2018. Web of Science Citations: 4.
OLIVEIRA, JESSICA A.; NOGUEIRA, ANDRE E.; GONCALVES, MARIA C. P.; PARIS, ELAINE C.; RIBEIRO, CAUE; POIRIER, GAEL Y.; GIRALDI, TANIA R. Photoactivity of N-doped ZnO nanoparticles in oxidative and reductive reactions. Applied Surface Science, v. 433, p. 879-886, MAR 1 2018. Web of Science Citations: 16.
NOGUEIRA, ANDRE E.; RIBEIRO, LUCAS S.; GORUP, LUIZ F.; SILVA, GELSON T. S. T.; SILVA, FERNANDO F. B.; RIBEIRO, CAUE; CAMARGO, EMERSON R. New Approach of the Oxidant Peroxo Method (OPM) Route to Obtain Ti(OH)(4) Nanoparticles with High Photocatalytic Activity under Visible Radiation. INTERNATIONAL JOURNAL OF PHOTOENERGY, 2018. Web of Science Citations: 0.
NOGUEIRA, ANDRE E.; LOPES, OSMANDO F.; NETO, ARQUIMINIO B. S.; RIBEIRO, CAUE. Enhanced Cr(VI) photoreduction in aqueous solution using Nb2O5/CuO heterostructures under UV and visible irradiation. CHEMICAL ENGINEERING JOURNAL, v. 312, p. 220-227, MAR 15 2017. Web of Science Citations: 21.
CARVALHO, KELE T. G.; NOGUEIRA, ANDRE E.; LOPES, OSMANDO F.; BYZYNSKI, GABRIELA; RIBEIRO, CAUE. Synthesis of g-C3N4/Nb2O5 heterostructures and their application in the removal of organic pollutants under visible and ultraviolet irradiation. CERAMICS INTERNATIONAL, v. 43, n. 4, p. 3521-3530, MAR 2017. Web of Science Citations: 18.
FRANCATTO, P.; SOUZA NETO, F. N.; NOGUEIRA, A. E.; KUBO, A. M.; RIBEIRO, L. S.; GONCALVES, L. P.; GORUP, L. F.; LEITE, E. R.; CAMARGO, E. R. Enhanced reactivity of peroxo-modified surface of titanium dioxide nanoparticles used to synthesize ultrafine bismuth titanate powders at lower temperatures. CERAMICS INTERNATIONAL, v. 42, n. 14, p. 15767-15772, NOV 1 2016. Web of Science Citations: 5.
LOPES, OSMANDO F.; CARVALHO, KELE T. G.; NOGUEIRA, ANDRE E.; AVANSI, JR., WALDIR; RIBEIRO, CAUE. Controlled synthesis of BiVO4 photocatalysts: Evidence of the role of heterojunctions in their catalytic performance driven by visible-light. APPLIED CATALYSIS B-ENVIRONMENTAL, v. 188, p. 87-97, JUL 5 2016. Web of Science Citations: 67.
NOGUEIRA, ANDRE E.; GIROTO, AMANDA S.; NETO, ARQUIMINIO B. S.; RIBEIRO, CAUE. CuO synthesized by solvothermal method as a high capacity adsorbent for hexavalent chromium. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, v. 498, p. 161-167, JUN 5 2016. Web of Science Citations: 12.

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