Electrochemical CO2 reduction of rhenium tricarbonyl complex


  • Nguyen N. Phuong Institute of Applied Materials Science, Vietnam Academy of Science and Technology (VAST), 29TL Street, Ward Thanh Loc, District 12, Ho Chi Minh City, Viet Nam
  • Nguyen M. Tuan Institute of Applied Materials Science, Vietnam Academy of Science and Technology (VAST), 29TL Street, Ward Thanh Loc, District 12, Ho Chi Minh City, Viet Nam
  • Tran T. Trang Faculty of Materials Scienceand Technology, University of Science, 227 Nguyen Van Cu Str., Dist. 5, Ho Chi Minh City, Viet Nam
  • Tran T. N. Anh Faculty of Materials Scienceand Technology, University of Science, 227 Nguyen Van Cu Str., Dist. 5, Ho Chi Minh City, Viet Nam
  • Nam N. Dang Future Materials and Devices Lab, Institute of Fundamental and Applied Sciences, Duy Tan University, Ho Chi Minh City, Viet Nam
  • Dang V. Quang Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet Street, Cau Giay, Ha Noi, Viet Nam
  • Pham D. Khanh Institute of Applied Materials Science, Vietnam Academy of Science and Technology (VAST), 29TL Street, Ward Thanh Loc, District 12, Ho Chi Minh City, Viet Nam
  • Nguyen V. Khiem Institute of Applied Materials Science, Vietnam Academy of Science and Technology (VAST), 29TL Street, Ward Thanh Loc, District 12, Ho Chi Minh City, Viet Nam




rhenium tricarbonyl complexes, electrocatalytic reduction CO2, electrochemistry


Carbon dioxide isconsidered asa primary reason forglobal climate change, thus CO2 needs to be urgently reduced. Catalyticconversion of CO2 into chemical fuels is oneof the most crucial technologiesthat can address both global warming and the depletion of fossil fuels. Rhenium tricarbonyl complex [Re(bpy)(CO)3Cl] (bpy: 2,2’ bipyridine) possesses a great potential of capturing and highly selective converting CO2 to carbon monoxide. In the current study, we synthesized and characterized the structure of [Re(bpy)(CO)3Cl] by 1H NMR, ESI-MS, FITR, and PL spectroscopy. The electrochemical properties and the electrochemical CO2 reduction of [Re(bpy)(CO)3Cl] in the absence and presence of an electron donor source were carried out using cyclic voltammetric measurements. The cyclic voltammogram of [Re(bpy)(CO)3Cl] in N2-saturated DMF solution displayedone irreversible reduction wave at -1.33 V. [Re(bpy)(CO)3Cl] expressedits electrocatalytic behavior in CO2 atmosphere by the enhancement of the cathodic current density. The current increased approximately twofold in CO2-saturated DMF solution(from 0.15 to 0.32 mA/cm2)and more enhancement when adding TEOA solvent. With the presence of an electron donor, the CO2 reduction efficiency of [Re(bpy)(CO)3Cl] was improved and represented by an approximately fourfold increase in cathodic current from 0.32 to 1.12 mA/cm2. One-electron reduced species of [Re(bpy)(CO)3Cl] observed at 1.33 V in N2 and CO2-saturated electrolytescontributedto the reaction with CO2.


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How to Cite

N. N. Phuong, “Electrochemical CO2 reduction of rhenium tricarbonyl complex”, Vietnam J. Sci. Technol., vol. 59, no. 6A, pp. 125–134, Mar. 2022.



International Symposium on Materials Science and Engineering - ISMSE