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Regulation of the microenvironment of PbO@BiO-tube by structural reconstruction for boosting the electrochemical ozone production performance
Electrochemical ozone preparation (EOP) provided a novel technological path for on-site preparation of ozone. However, the elucidation of authentic active sites within anodic electrocatalysts during the EOP process remained a formidable challenge. Herein, tubular Bi 2 O 3 was synthesized and Pb 2 O...
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| Published in: | Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2024-05, Vol.12 (18), p.1852-1862 |
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| Main Authors: | , , , , , , , |
| Format: | Article |
| Language: | |
| Online Access: | Get full text |
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| Summary: | Electrochemical ozone preparation (EOP) provided a novel technological path for on-site preparation of ozone. However, the elucidation of authentic active sites within anodic electrocatalysts during the EOP process remained a formidable challenge. Herein, tubular Bi
2
O
3
was synthesized and Pb
2
O
3
particles were embedded inside the tubular structure by wet chemistry methodologies (named Pb
2
O
3
@Bi
2
O
3
-tube). The unique structure could expose the active site and enhances the coupled contact between the reactive species and the active site. More importantly, the Pb
2
O
3
@Bi
2
O
3
-tube electrocatalyst showed a dissolution remodeling phenomenon during the EOP reaction, and partially transformed into sheet Bi
24
Pb
2
O
40
. Correspondingly, structural characterization revealed that the reconfigured electrocatalyst induces changes in the electronic environment. Moreover, the reconfigured electrocatalyst also provides more active sites and faster electron transfer capability, which could optimize the microenvironment for electrochemical reactions and accelerating the EOP reaction. The satisfactory electrodegradation performance of the reconfigured electrocatalysts for organic pollutants implied their capability for environmental applications.
The morphological reconfiguration of Pb
2
O
3
@Bi
2
O
3
-tube could optimized the surface microenvironment and enhanced electrochemical properties (FEO
3
= 11.29%). And the excellent electrochemical degradation implied the potential environmental application of Pb
2
O
3
@Bi
2
O
3
-tube. |
|---|---|
| ISSN: | 2050-7488 2050-7496 |
| DOI: | 10.1039/d4ta00719k |