Sonocatalytic carbon dioxide reduction for syngas production over surface‐roughened <scp> Cu <sub> <i>x</i> </sub> O </scp> catalyst
Sonocatalytic carbon dioxide reduction for syngas production over surface‐roughened Cu x O catalyst
Authors (6): D. Xia, Y. Qin, H. Khalid, Y. N. Regmi, L. A. King, J. Kwan
Themes: Water-Energy
DOI: 10.1002/aic.70605
Citations: 0
Pub type: journal-article
Pub year: 2026

Publisher: Wiley

Issue:

License: [{"start"=>{"date-parts"=>[[2026, 8, 16]], "date-time"=>"2026-08-16T00:00:00Z", "timestamp"=>1786838400000}, "content-version"=>"vor", "delay-in-days"=>0, "URL"=>"http://creativecommons.org/licenses/by/4.0/"}, {"start"=>{"date-parts"=>[[2026, 8, 16]], "date-time"=>"2026-08-16T00:00:00Z", "timestamp"=>1786838400000}, "content-version"=>"tdm", "delay-in-days"=>0, "URL"=>"http://doi.wiley.com/10.1002/tdm_license_1.1"}]

Publication date(s): 2026/08/16 (online)

Pages:

Volume: Issue:

Journal: AIChE Journal

Link: [{"URL"=>"https://aiche.onlinelibrary.wiley.com/doi/pdf/10.1002/aic.70605", "content-type"=>"application/pdf", "content-version"=>"vor", "intended-application"=>"text-mining"}, {"URL"=>"https://aiche.onlinelibrary.wiley.com/doi/full-xml/10.1002/aic.70605", "content-type"=>"application/xml", "content-version"=>"vor", "intended-application"=>"text-mining"}, {"URL"=>"https://aiche.onlinelibrary.wiley.com/doi/pdf/10.1002/aic.70605", "content-type"=>"unspecified", "content-version"=>"vor", "intended-application"=>"similarity-checking"}]

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Abstract The transition to a carbon‐circular economy requires efficient technologies for converting CO 2 into value‐added chemical feedstocks. Sonocatalytic CO 2 conversion has recently emerged as a compelling approach to drive this conversion. Here, we report a surface‐roughened Cu x O catalyst for sonocatalytic CO 2 reduction in aqueous media, achieving a marked CO 2 ‐to‐CO conversion alongside H 2 production, yielding tunable syngas (CO/H 2 ) ratios relevant to Fischer–Tropsch and methanol synthesis processes. We demonstrate that the CO/H 2 ratio is systematically controlled by varying the solution composition (KHCO 3 , CH 3 COOK, and KCl), revealing solution‐mediated selectivity as an unexplored lever in CO 2 sonocatalytic systems. Prolonged testing in CO 2 ‐saturated KHCO 3 solutions induced morphological deformations of the Cu x O catalyst which were shown to benefit sonolysis, as evidenced by higher CO production rates during long‐term operation. Our findings highlight surface‐roughened Cu x O catalyst for sonocatalytic conversion of CO 2 ‐saturated solutions to syngas and introduce solution engineering as a new approach to tune product selectivity.

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