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Preparation and characterization of TiO2 nanostructured electrodes modified with metal organic frameworks (MOFs) for application in the preconcentration and reduction of CO2

Grant number: 17/12790-7
Support Opportunities:Scholarships in Brazil - Post-Doctoral
Effective date (Start): October 01, 2017
Effective date (End): December 08, 2022
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
Principal Investigator:Maria Valnice Boldrin
Grantee:Kallyni Irikura
Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
Associated research grant:14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies, AP.TEM
Associated scholarship(s):19/07020-3 - Preparation, characterization and application of electrodes modified with polymer of intrinsic microporosity (PIM) in the capture and reduction of CO2 by triphasic photo(electro)catalytic processes, BE.EP.PD


Carbon dioxide (CO2) is one of the main gases responsible for the greenhouse effect and in high concentrations in the atmosphere has caused several climate changes that affecting directly the survival of some ecosystems and the quality of life of humanity. In an attempt to minimize this problem, different methodologies are being proposed to reduce the concentration of CO2 in the atmosphere. Among the different methodologies, the photoeletrocatalytic processes are widely used, since they can reduce the CO2 molecule to high value added compounds such as CO, CH4, CH3OH, HCHO and HCOOH, among others. However, this methodology presents some limitations such as: low solubility of CO2 in aqueous medium, low selectivity in the conversion of CO2, low efficiency of the semiconductor materials and low adsorption of CO2 on the surface of the semiconductor material, which becomes the process efficiency relatively low. One of the alternatives to improve the efficiency of these processes would be the superficial modification of the semiconductor material using the metal organic frameworks known as MOFs. This new class of compounds presents unique characteristics (high surface area, low density, reasonable thermal stability and the possibility of surface modification due to the organic portion in the material) that allow its application in different areas, such as storage and gas separators, drug carriers and heterogeneous catalysts, among others. Thus, it is intended to obtain TiO2 nanostructured semiconductor materials and modified with Au@ZIF-8, Ru-BTC and UiO-66(Zr)-NH2 MOFs that are capable of minimizing the limitations of the photoelectrocatalytic processes with good selectivity, capture, storage and catalysis of CO2 molecules, thus raising the conversion efficiency of CO2 to compounds with high added value.

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Scientific publications (8)
(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)
SILVA, JOAO PEDRO; IRIKURA, KALLYNI; ZANONI, MARIA VALNICE BOLDRIN; LIMA GOMES, PAULO CLAIRMONT F.. A simple electrogravimetric experimental setup to determine Cu in alloy samples for teaching purposes. CHEMICAL PAPERS, v. 75, n. 2, . (17/12790-7, 14/50945-4, 18/22393-8)
IRIKURA, KALLYNI; LIMA PERINI, JOAO ANGELO; SILVA FLOR, JADER BARBOSA; GALVAO FREM, REGINA CELIA; BOLDRIN ZANONI, MARIA VALNICE. Direct synthesis of Ru-3(BTC)(2) metal-organic framework on a Ti/TiO2NT platform for improved performance in the photoelectroreduction of CO2. JOURNAL OF CO2 UTILIZATION, v. 43, . (17/12790-7, 16/18057-7)
DE BRITO, JULIANA FERREIRA; IRIKURA, KALLYNI; TERZI, CAROLINA MACHADO; NAKAGAKI, SHIRLEY; BOLDRIN ZANONI, MARIA VALNICE. The great performance of TiO2 nanotubes electrodes modified by copper(II) porphyrin in the reduction of carbon dioxide to alcohol. JOURNAL OF CO2 UTILIZATION, v. 41, . (14/50945-4, 13/25343-8, 17/12790-7)
SILVA, BEATRIZ COSTA E; IRIKURA, KALLYNI; SILVA FLOR, JADER BARBOSA; MENEZES DOS SANTOS, RODRIGO MORAIS; LACHGAR, ABDESSADEK; GALVAO FREM, REGINA CELIA; BOLDRIN ZANONI, MARIA VALNICE. Electrochemical preparation of Cu/Cu2O-Cu(BDC) metal-organic framework electrodes for photoelectrocatalytic reduction of CO2. JOURNAL OF CO2 UTILIZATION, v. 42, . (17/12790-7, 14/50945-4)
SANCHEZ DE LA CRUZ, PAMELA TERESA; IRIKURA, KALLYNI; LACHGAR, ABDESSADEK; CARDOSO, JULIANO CARVALHO; ALARCON CAVERO, HUGO; BOLDRIN ZANONI, MARIA VALNICE. Preparation of FTO/CU2O Electrode Protected by PEDOT:PSS and Its Better Performance in the Photoelectrocatalytic Reduction of CO2 to Methanol. ELECTROCATALYSIS, v. 11, n. 5, . (17/12790-7, 15/18109-4)
SILVA, BEATRIZ COSTA E.; IRIKURA, KALLYNI; GALVAO FREM, REGINA CELIA; BOLDRIN ZANONI, MARIA VALNICE. Effect of Cu(BDC-NH2) MOF deposited on Cu/Cu2O electrode and its better performance in photoelectrocatalytic reduction of CO2. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 880, . (14/50945-4, 17/12790-7)
MOURA TORQUATO, LILIAN D.; PASTRIAN, FABIAN A. C.; LIMA PERINI, JOAO A.; IRIKURA, KALLYNI; BATISTA, ANA PAULA DE L.; DE OLIVEIRA-FILHO, ANTONIO G. S.; CORDOBA DE TORRESI, SUSANA I.; BOLDRIN ZANONI, MARIA V.. Relation between the nature of the surface facets and the reactivity of Cu2O nanostructures anchored on TiO2NT@PDA electrodes in the photoelectrocatalytic conversion of CO2 to methanol. APPLIED CATALYSIS B-ENVIRONMENTAL, v. 261, . (17/11631-2, 14/50945-4, 19/00463-7, 17/12790-7, 16/18057-7)
LIMA PERINI, JOAO ANGELO; MOURA TORQUATO, LILIAN D.; IRIKURA, KALLYNI; BOLDRIN ZANONI, MARIA VALNICE. Ag/polydopamine-modified Ti/TiO2 nanotube arrays: A platform for enhanced CO2 photoelectroreduction to methanol. JOURNAL OF CO2 UTILIZATION, v. 34, p. 596-605, . (14/50945-4, 16/18057-7, 17/12790-7)

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