Photocatalytic CO₂ reduction of Rhenium tricarbonyl complexes with high CO selectivity under visible light

¹ Institute of Applied Materials Science, Vietnam Academy of Science and Technology, 29TL Street, Ward Thanh Loc, District 12, Ho Chi Minh City, Viet Nam
² Graduate University of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay, Ha Noi, Viet Nam
³ National Institute of Applied Mechanics and Informatics, Vietnam Academy of Science and Technology, 291 Dien Bien Phu Street, Vo Thi Sau Ward, District 3, Ho Chi Minh City, Vietnam

^* Email: nguyenmanhtuan@iams.vast.vn

Abstract

Visible-light-driven photocatalytic CO₂ reduction can address climate change and energy short-age. Homogenous photocatalysis converted CO₂ to value chemicals have a straightforward procedure synthesis and CO₂ conversion mechanism. Rhenium complexes based on pyridyl-triazole work as efficient catalysts for CO₂ reduction at room conditions and under visible light. Photo-catalytic measurements show Re(bpy-COOH) possesses the highest catalytic CO₂ conversion activity, whereas Re(Hpytr) is the lowest catalytic activity. These complexes posses the high product selectively, which produce two gases CO and H2 with high CO selectively. CO selectivity of Re(bpy-COOH), Re(Hphtr), and Re(Hpytr) are determined by 99.0, 97.9 and 92.8, respectively. TONCO reaches the highest value at 100 min are 5.46, 1.56, and 0.51 for Re(bpy-COOH), Re(Hphtr), and Re(Hpytr), respectively. This study explore the new property as photocatalysts active for CO₂ reduction of these complexes with high CO selectively.