In:
Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 11, No. 22 ( 2023), p. 7389-7396
Abstract:
The CO 2 emissions from flue gases in traditional electricity generation and industrial sectors account for the main source of global emissions. The direct conversion of CO 2 in flue gases into value-added carbon production is a low-cost and simple process to realize a carbon neutral cycle, yet the development of an efficient catalyst to treat the CO 2 in flue gases is still in its infancy. Here, we present two polyoxometalate-based metal organic frameworks (POMOFs) with [W 10 O 32 ] 4− as the connecting node, named Co 2 (W 10 O 32 )(BIA) 4 (CH 3 CN) 4 (compound 1) and Co 4 (W 10 O 32 )(INA) 6 (CH 3 CN) 4 (TBA) 2 (compound 2), as catalysts for the photoreduction of CO 2 in exhaust gases. Under a pure CO 2 atmosphere, syngas is the main product and the yield of compound 1 is 72.7 μmol h −1 , which is ∼40% higher than that of compound 2 (54.2 μmol h −1 ). Notably, the yield of compound 1 reaches 42.7 μmol h −1 with 15% CO 2 in the flue gas, which indicates that the catalyst can not only overcome the low CO 2 concentration but also tolerate the harsh gas composition in the flue gas. In addition, density functional theory (DFT) calculations show that the charge distribution and steric hindrance of compound 1 were conducive to the reduction reaction.
Type of Medium:
Online Resource
ISSN:
2050-7526
,
2050-7534
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
2702245-6
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