Hierarchical Carbon Nanocage-Enabled Electron Buffering to Indium Oxide for Efficient CO2 Hydrogenation to Methanol DOI

Zidi Wang,

Xudong Dong, Zixuan Sun

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 26, 2025

The hydrogenation of CO2 to methanol over In2O3-based catalysts is highly sensitive the concentration surface oxygen vacancies (Ov). While increasing Ov can enhance catalytic performance, it also increases risk over-reduction during hydrogenation, leading a trade-off between activity and stability. Here, we demonstrate that hierarchical carbon nanocages (hCNCs) act as effective "electron buffering agents" for In2O3, mitigating this thereby enhancing yield, with nitrogen doping hCNCs further amplifying effect. Detailed investigations reveal donate electrons Ov-deficient In2O3 promote formation, while extracting from Ov-rich In2O3-x, preventing metallic In. As result, supported on maintains consistently high concentration, both This work highlights promising potential in stimulates interest their exploitation other redox processes.

Language: Английский

Synergistical effect of CoIn alloy and oxygen vacancies over Co-In-Zr ternary catalysts boosting CO2 hydrogenation to methanol DOI Creative Commons
Xueyang Jiang,

Xiaoshen Li,

Shaohui Xiong

et al.

Carbon Capture Science & Technology, Journal Year: 2025, Volume and Issue: unknown, P. 100376 - 100376

Published: Jan. 1, 2025

Language: Английский

Citations

0
In Situ Observations of CO2 Activation on the PdIn(111) Alloy Surface at Ambient Pressures DOI
Ji Won Park,

Siwoo Noh,

Young Jae Kim

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: unknown, P. 4131 - 4138

Published: April 17, 2025

The CO2 activation process has been investigated on the palladium-indium (PdIn) (111) alloy surface using ambient pressure scanning tunneling microscopy (AP-STM) and synchrotron-based X-ray photoelectron spectroscopy (AP-XPS). Pd In atoms diffuse onto topmost layer after annealing at 840 K, which adopts intermetallic PdIn geometries in an ultrahigh vacuum. AP-STM reveals that interfacial Pd-InOx nanostructures are created by dissociative adsorption under CO2(g) environments even 300 K. Synchrotron-based AP-XPS measurements support idea observed induces InOx segregation PdIn(111) dissociated atomic oxygen from CO2. After all, gas molecules simultaneously adsorb oxygen-terminated sites of nanoclusters to produce carbonate species. Our situ observations indicate restructuring metastable may provide active for efficient activation, contributing rational catalyst design toward sustainable utilizations.

Language: Английский

Citations

0
Intermetallic Electrocatalysts for Small‐Molecule Fuel Oxidation DOI Creative Commons

Qi Mai,

Yaohua Mai, Yiwen Zhong

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Abstract Intermetallic compounds with well‐ordered crystal structures and precise stoichiometry are emerging as a transformative class of electrocatalysis. Existing reviews have primarily focused on intermetallic for specific electrocatalytic reactions or their synthesis strategies, while comprehensive perspective how ordered contribute to performance across different electrochemical applications that share similarity remains underexplored. In this review, the recent progress is examined in compounds, particularly focusing structure–property‐performance correlations four critical small‐molecule fuel oxidation reactions, including hydrogen formic acid methanol ethanol reactions. These central sustainable fuel‐cell technologies due high theoretical energy densities, relatively benign byproducts, scalability clean production. This review begins by highlighting advantages compound nanocrystals over metal alloys, such unique structures, exceptional thermodynamic stability, enhanced durability, improved intrinsic activity, optimized distribution active sites, scalability. Subsequently, these comprehensively discussed detail. concludes an outlook future directions application nanocrystals, emphasizing role advancing technologies.

Language: Английский

Citations

0
Fabricating Nano-Multi-Interface Al2O3-In/In2O3 by A Dual-Functional Interfacial Engineering Strategy for Boosting Photothermal Catalytic CO2 Hydrogenation to Methanol DOI
Qingshan Yang, Yiming He, Peng Guo

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125479 - 125479

Published: May 1, 2025

Language: Английский

Citations

0
Hierarchical Carbon Nanocage-Enabled Electron Buffering to Indium Oxide for Efficient CO2 Hydrogenation to Methanol DOI

Zidi Wang,

Xudong Dong, Zixuan Sun

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 26, 2025

The hydrogenation of CO2 to methanol over In2O3-based catalysts is highly sensitive the concentration surface oxygen vacancies (Ov). While increasing Ov can enhance catalytic performance, it also increases risk over-reduction during hydrogenation, leading a trade-off between activity and stability. Here, we demonstrate that hierarchical carbon nanocages (hCNCs) act as effective "electron buffering agents" for In2O3, mitigating this thereby enhancing yield, with nitrogen doping hCNCs further amplifying effect. Detailed investigations reveal donate electrons Ov-deficient In2O3 promote formation, while extracting from Ov-rich In2O3-x, preventing metallic In. As result, supported on maintains consistently high concentration, both This work highlights promising potential in stimulates interest their exploitation other redox processes.

Language: Английский

Citations

0