Sökning: onr:"swepub:oai:DiVA.org:kth-327268" >
Engineering Single-...
Engineering Single-Atom Active Sites on Covalent Organic Frameworks for Boosting CO2Photoreduction
-
Ran, L. (författare)
-
Li, Z. (författare)
-
Ran, B. (författare)
-
visa fler...
-
Cao, J. (författare)
-
Zhao, Y. (författare)
-
Shao, T. (författare)
-
Song, Y. (författare)
-
Leung, M. K. H. (författare)
-
- Sun, Licheng, 1962- (författare)
- KTH,Kemi
-
Hou, J. (författare)
-
visa färre...
-
(creator_code:org_t)
- 2022-09-06
- 2022
- Engelska.
-
Ingår i: Journal of the American Chemical Society. - : American Chemical Society (ACS). - 0002-7863 .- 1520-5126. ; 144:37, s. 17097-17109
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Solar carbon dioxide (CO2) conversion is an emerging solution to meet the challenges of sustainable energy systems and environmental/climate concerns. However, the construction of isolated active sites not only influences catalytic activity but also limits the understanding of the structure-catalyst relationship of CO2 reduction. Herein, we develop a universal synthetic protocol to fabricate different single-atom metal sites (e.g., Fe, Co, Ni, Zn, Cu, Mn, and Ru) anchored on the triazine-based covalent organic framework (SAS/Tr-COF) backbone with the bridging structure of metal-nitrogen-chlorine for high-performance catalytic CO2 reduction. Remarkably, the as-synthesized Fe SAS/Tr-COF as a representative catalyst achieved an impressive CO generation rate as high as 980.3 μmol g-1 h-1 and a selectivity of 96.4%, over approximately 26 times higher than that of the pristine Tr-COF under visible light irradiation. From X-ray absorption fine structure analysis and density functional theory calculations, the superior photocatalytic performance is attributed to the synergic effect of atomically dispersed metal sites and Tr-COF host, decreasing the reaction energy barriers for the formation of *COOH intermediates and promoting CO2 adsorption and activation as well as CO desorption. This work not only affords rational design of state-of-the-art catalysts at the molecular level but also provides in-depth insights for efficient CO2 conversion.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Catalyst activity
- Catalyst selectivity
- Density functional theory
- Metals
- Solar energy
- X ray absorption
- carbon dioxide
- cobalt
- copper
- iron
- manganese
- metal organic framework
- nickel
- ruthenium
- zinc
- Active site
- CO2 reduction
- Covalent organic frameworks
- Metal sites
- Performance
- Photo reduction
- Single-atoms
- Sustainable energy systems
- Synthetic protocols
- ]+ catalyst
- adsorption
- Article
- atom
- catalyst
- chemical structure
- covalent bond
- desorption
- engineering
- photocatalysis
- reduction (chemistry)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
Ran, L.
-
Li, Z.
-
Ran, B.
-
Cao, J.
-
Zhao, Y.
-
Shao, T.
-
visa fler...
-
Song, Y.
-
Leung, M. K. H.
-
Sun, Licheng, 19 ...
-
Hou, J.
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Kemi
-
och Materialkemi
- Artiklar i publikationen
-
Journal of the A ...
- Av lärosätet
-
Kungliga Tekniska Högskolan