Nickel Metal–Organic Framework Monolayers for Photoreduction of Diluted CO2: Metal‐Node‐Dependent Activity and Selectivity. (21st November 2018)

• Record Type: Journal Article
• Authors: Han, Bin; Ou, Xinwen; Deng, Ziqi; Song, Yao; Tian, Chen; Deng, Hong; Xu, Yi‐Jun; Lin, Zhang
• Is Part Of: Angewandte Chemie. Volume 130:Number 51(2018)
• Page Start: 17053
• Page End: 17057
• Publication Date: 2018-11-21
• Subjects: Metall-organische Gerüststrukturen -- Monoschichten -- Nickel -- Photochemische CO2-Reduktion -- Selektivität; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201811545
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Photocatalytic conversion of diluted CO2 into solar fuel is highly appealing yet still in its infancy. Herein, we demonstrate the metal‐node‐dependent performance for photoreduction of diluted CO2 by constructing Ni metal–organic framework (MOF) monolayers (Ni MOLs). In diluted CO2 (10 %), Ni MOLs exhibit a highest apparent quantum yield of 1.96 % with a CO selectivity of 96.8 %, which not only exceeds reported systems in diluted CO2 but also is superior to most catalysts in pure CO2 . Whereas isostructural Co MOLs is almost inactive in diluted CO2, indicating the performance is dependent on the metal nodes. Experimental and theoretical investigations show that strong CO2 binding affinity of Ni MOLs is the crucial factor, which stabilizes the Ni‐CO2 adducts and facilitates CO2 ‐to‐CO conversion. Abstract : Die photokatalytische Umwandlung von verdünntem CO2 gelingt hoch effizient und selektiv an Monoschichten einer Nickel‐organischen Gerüstverbindung. Die anfängliche CO2 ‐Adsorption ist der entscheidende Schritt; sie hängt von der Natur der Metall‐Baugruppe ab.