The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.
Engineering the Local Microenvironment over Bi Nanosheets for Highly Selective Electrocatalytic Conversion of CO2 to HCOOH in Strong Acid
Abstract
The extensive deployment of the electrocatalytic CO 2 reduction reaction (CO 2 RR) is presently limited by the utilization of alkaline/neutral electrolytes in which carbonate formation severely reduces the carbon efficiency and electrolysis stability. By contrast, the CO 2 RR in a strong acid electrolyte can overcome these shortcomings, yet the hydrogen evolution reaction (HER) greatly outcompetes the CO 2 RR in acidic media. Herein, CO 2 reduction to HCOOH, a significant chemical intermediate in many industrial processes, was realized in strong acid (pH ≤ 1) through introducing K + cations into the electrolyte. The K + -assisted acidic CO 2 RR accordingly manufactured HCOOH with a high Faradaic efficiency of 92.2% @–1.23 V RHE and a commercially relevant current density of −237.1 mA cm –2 . More importantly, a high single-pass carbon efficiency of 27.4% for HCOOH production was demonstrated in acid, which exceeded the value obtained in the alkaline CO 2 RR. Further mechanistic studies demonstrated that K + can engineer the local microenvironment over the Bi catalyst surface by reducing the proton coverage to suppress the competing HER and creating local interaction to stabilize the *OCOH intermediate, which ultimately promotes high-efficiency CO 2 conversion to HCOOH in strong acidic media.
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Self-citation
Metadata
- Authors
- Qiao, Y., Lai, W., Huang, K., Yu, T., Wang, Q., Gao, L., Yang, Z., Ma, Z., Sun, T., Liu, M., Lian, C., & Huang, H.
- Venue
- ACS Catalysis
- Publisher
- American Chemical Society (ACS)
- Published
- 2022-02-01
- Volume
- 12
- Issue
- 4
- Pages
- 2357-2364
- ISSN
- 2155-5435 (ISSN-L)
- OpenAlex
- W4210538176
- Cited by
- 336
- References
- 34
- FWCI
- 12.36
- Type
- journal article
- Language
- en
- Open access
- closed
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