Effect of Cu(BDC-NH2) MOF deposited on Cu/Cu2O electrode and its better performance in photoelectrocatalytic reduction of CO2

Author(s)

Silva, Beatriz Costa E. ^{[1, 2]} ; Irikura, Kallyni ^{[1, 2]} ; Galvao Frem, Regina Celia ^[1] ; Boldrin Zanoni, Maria Valnice ^{[1, 2]}

Affiliation

^[1] Sao Paulo State Univ UNESP, Inst Chem, Araraquara 55 Prof Francisco Degni St, BR-14800060 Araraquara, SP - Brazil

^[2] Sao Paulo State Univ UNESP, Natl Inst Alternat Technol Detect, Inst Chem, Toxicol Evaluat & Removal Micropollutants & Radio, BR-14800060 Araraquara, SP - Brazil

• Document type: Journal article
• Source: JOURNAL OF ELECTROANALYTICAL CHEMISTRY; v. 880, JAN 1 2021.
• Web of Science Citations: 2

Abstract

The present work reports the development of Cu/Cu2O-Cu(BDC-NH2) electrode, prepared by electrochemical deposition using the ligand 2-amino-1,4-benzenedicarboxylic acid and copper ion (II) produced in situ, and its application in CO2 reduction in aqueous medium. The Cu(BDC-NH2) MOF deposited on Cu/Cu2O electrode act as efficient catalyst for the photoelectrocatalytic reduction of CO2 due to its high surface area and high capacity of trapping CO2. Under optimized conditions and based on the application of the proposed electrode, the photoelectrocatalytic reduction of 0.1 mol L?1 sodium sulfate saturated with CO2 under UV?Vis irradiation and applied potential of +0.1 V can generate an amount of approximately 674 ?mol L?1 of methanol in 3 h of treatment. The amine substituent in Cu(BDC-NH2) MOF plays an important role in the capturing of CO2, and this contributes toward obtaining better photoelectrocatalytic efficiency of the CO2/methanol conversion compared to the use of the Cu/Cu2O and the nonfunctionalized Cu/Cu2O-Cu(BDC) MOF electrode. (AU)

• FAPESP's process: 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies
• Grantee: Maria Valnice Boldrin
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 17/12790-7 - Preparation and characterization of TiO2 nanostructured electrodes modified with metal organic frameworks (MOFs) for application in the preconcentration and reduction of CO2
• Grantee: Kallyni Irikura
• Support Opportunities: Scholarships in Brazil - Post-Doctoral