The Pivotal Roles of Light and Ca‐Doping in Photothermocatalytic CO2 Reduction by Methane on Nanocomposites of Nickel Nanoparticles Loaded on Ca‐Doped Al2O3 DOI

Xiaocui Yu,

Huamin Cao, Yuanzhi Li

et al.

Solar RRL, Journal Year: 2024, Volume and Issue: 8(8)

Published: March 11, 2024

CO 2 and CH 4 are greenhouse gases that can be converted into H through light‐driven photothermocatalytic reduction with methane (CRM), which is a process of solar energy collection storage. However, conventional catalysts require high light intensities (≥192.0 kW m −2 ) to obtain fuel reaction rates solar‐to‐fuel efficiency ( η ), deactivate easily coking at temperature. Herein, nanomaterial Ni nanoparticles loaded on Ca‐doped Al O 3 (Ni/Ca–Al synthesized. Ca doping improves the adsorption capacity Ni/Ca–Al . Under focused ultraviolet–visible–infrared illumination low intensity (80.8 obtains production (, 76.85 mmol min −1 g r , 90.90 1.9 1.3 times those in dark respectively, exhibits large (30.3%) good stability. The rate reduced by factor 25.8 compared reference catalyst improvement catalytic activity anticoking properties stems from photoactivation, not only accelerates CRM nanoparticles, but also enhances oxidation carbon species (produced nanoparticles) strong Ca–Al interface.

Language: Английский

Recent advances in unconventional heating and external field-assisted enhancement for dry reforming of methane DOI

Zhiyong Tu,

Chunxia Mu,

Yuan Yao

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 481, P. 148899 - 148899

Published: Jan. 20, 2024

Language: Английский

Citations

16
Photothermal catalytic dry reforming of methane over Ce‐promoted Ni/NiO heterostructure DOI Open Access
Xue Yao, Wenjing Dong,

Zixian Li

et al.

AIChE Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Abstract Photothermal catalytic dry reforming of methane (DRM) provides a sustainable carbon conversion route, but the syngas production rates remain unsatisfactory under low‐temperature conditions. This study reported layered double hydroxide‐derived Ni–NiO heterojunction catalyst with optimized electronic environments via Ce doping. The Ce‐doped exhibited excellent photothermal DRM performance, H 2 and CO 93.90 114.25 mmol g −1 min , respectively, superior 12‐h stability. Mechanistic studies revealed that activated CH 4 to form x * O* species, while doping promoted coupling these intermediates 3 O*, enhancing generation. strategy effectively bonded intermediate species generated from reactants, thereby into syngas.

Language: Английский

Citations

1
Low-Temperature Methane Conversion over Single-Atom Photocatalysts (a Review) DOI
Н. Н. Ежова, K. B. Golubev, Yu. M. Snatenkova

et al.

Petroleum Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

Language: Английский

Citations

0
Uncovering the Origin of Light‐Promoted Synergetic Effect and Y Doping in Enhancing Photothermocatalytic Dry Reforming of Methane on Ni/Ni‐Y2‐Al2O3 DOI Open Access
Dongzhi Chen, Lei Ji, Yuanzhi Li

et al.

Solar RRL, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 31, 2025

Photothermocatalytic dry reforming of methane (DRM) can convert CH 4 and CO 2 into syngas, offering an effective approach to reducing greenhouse gas emissions. However, photothermocatalytic DRM reaction generally needs a high light intensity surpassing 192 kW m −2 attain light‐fuel conversion. Also, catalysts applied are liable inactivation due carbon deposition. Herein, nanocomposite Ni nanoparticles supported on Ni‐ Y‐doped Al O 3 (Ni/Ni‐Y ‐Al ) is prepared. It achieves H production rates with light‐to‐fuel efficiency (29.2%) at lower (80.1 ). Meanwhile, it sustains excellent durability accomplishes 37‐fold reduction in deposition rate compared Ni/Al . The substantially enhanced catalytic activity resistance Ni/Ni‐Y correlated accelerating species (C*) oxidation (the rate‐determining steps DRM). This acceleration derives from the synergetic effect carbonate resulting Y doping, which participate C* via two separate pathways. When light, further facilitates oxidation. Simultaneously, immensely reduces activation energy, activates NiO bonds interface region, expedites between interface, enhancing resistance.

Language: Английский

Citations

0
Light-promoted synergy between CO2 adsorption sites and active oxygen leads to efficient photothermocatalytic dry reforming of methane on Ni/Ni-Sr-Al2O3 DOI

Wenhao Liao,

Lei Ji, Yuanzhi Li

et al.

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163027 - 163027

Published: March 1, 2025

Language: Английский

Citations

0
The Pivotal Roles of Light and Ca‐Doping in Photothermocatalytic CO2 Reduction by Methane on Nanocomposites of Nickel Nanoparticles Loaded on Ca‐Doped Al2O3 DOI

Xiaocui Yu,

Huamin Cao, Yuanzhi Li

et al.

Solar RRL, Journal Year: 2024, Volume and Issue: 8(8)

Published: March 11, 2024

CO 2 and CH 4 are greenhouse gases that can be converted into H through light‐driven photothermocatalytic reduction with methane (CRM), which is a process of solar energy collection storage. However, conventional catalysts require high light intensities (≥192.0 kW m −2 ) to obtain fuel reaction rates solar‐to‐fuel efficiency ( η ), deactivate easily coking at temperature. Herein, nanomaterial Ni nanoparticles loaded on Ca‐doped Al O 3 (Ni/Ca–Al synthesized. Ca doping improves the adsorption capacity Ni/Ca–Al . Under focused ultraviolet–visible–infrared illumination low intensity (80.8 obtains production (, 76.85 mmol min −1 g r , 90.90 1.9 1.3 times those in dark respectively, exhibits large (30.3%) good stability. The rate reduced by factor 25.8 compared reference catalyst improvement catalytic activity anticoking properties stems from photoactivation, not only accelerates CRM nanoparticles, but also enhances oxidation carbon species (produced nanoparticles) strong Ca–Al interface.

Language: Английский

Citations

1