Investigating S-scheme charge transfer pathways in NiS@Ta2O5 hybrid nanofibers for photocatalytic CO2 conversion

Shao, Xiuli; Li, Ke; Li, Jingping; Cheng, Qiang; Wang, Guohong; Wang, Kai

doi:10.1016/s1872-2067(23)64478-x

Cited by 31 publications

(1 citation statement)

References 74 publications

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“…Meanwhile, a new vibration peak at 1513 cm −1 is observed, which can be assigned to the carbonates (*CO 3 ) species, suggesting that high temperature was favorable for CO 2 activation. 44 Upon exposure to light, the peak intensities of *HCO 3 and *HCOO species are further reduced, while the vibration peak of CH 4 (3016 cm −1 ) is detected, suggesting that *HCO 3 and *HCOO species are the main intermediate species for the CO 2 conversion to CH 4 . 16,45 The finding indicated that light irradiation could expedite the conversion of intermediates and therefore promote the CO 2 methanation reaction.…”

Section: Mechanisms For Photopromoted Activity Enhancementmentioning

confidence: 94%

Ruthenium–Cobalt Solid-Solution Alloy Nanoparticles for Enhanced Photopromoted Thermocatalytic CO₂ Hydrogenation to Methane

Tang,

Wang,

Guo

et al. 2024

ACS Nano

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Bimetallic alloy nanoparticles have garnered substantial attention for diverse catalytic applications owing to their abundant active sites and tunable electronic structures, whereas the synthesis of ultrafine alloy nanoparticles with atomic-level homogeneity for bulk-state immiscible couples remains a formidable challenge. Herein, we present the synthesis of Ru x Co1–x solid-solution alloy nanoparticles (ca. 2 nm) across the entire composition range, for highly efficient, durable, and selective CO2 hydrogenation to CH4 under mild conditions. Notably, Ru0.88Co0.12/TiO2 and Ru0.74Co0.26/TiO2 catalysts, with 12 and 26 atom % of Ru being substituted by Co, exhibit enhanced catalytic activity compared with the monometallic Ru/TiO2 counterparts both in dark and under light irradiation. The comprehensive experimental investigations and density functional theory calculations unveil that the electronic state of Ru is subtly modulated owing to the intimate interaction between Ru and Co in the alloy nanoparticles, and this effect results in the decline in the CO2 conversion energy barrier, thus ultimately culminating in an elevated catalytic performance relative to monometallic Ru and Co catalysts. In the photopromoted thermocatalytic process, the photoinduced charge carriers and localized photothermal effect play a pivotal role in facilitating the chemical reaction process, which accounts for the further boosted CO2 methanation performance.

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Section: Mechanisms For Photopromoted Activity Enhancementmentioning

confidence: 94%

Ruthenium–Cobalt Solid-Solution Alloy Nanoparticles for Enhanced Photopromoted Thermocatalytic CO₂ Hydrogenation to Methane

Tang,

Wang,

Guo

et al. 2024

ACS Nano

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Research Progress of NiS Cocatalysts in Photocatalysis

Gu,

Lin,

et al. 2024

Physica Status Solidi (a)

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In recent decades, photocatalysis technology, a typical mild and environmentally friendly technique, can use sunlight to drive the oxidation/reduction reactions on the surface of catalysts. However, single semiconductor materials can hardly meet the requirements of photocatalytic application due to the low availability of visible light, quick e− − h+ recombination, and the insufficiency of active sites. Cocatalysts are often introduced to solve the above problems. Among the numerous cocatalysts, NiS cocatalysts exhibit excellent properties, such as superior chemical stability, suitable band structure, and larger specific surface area, which can improve the photocatalytic efficiency of various semiconductors. Herein, the research progress of NiS cocatalysts in photocatalysis is reviewed. First, the structure of NiS and several common preparation methods are briefly introduced. Second, the NiS cocatalytic principle about how to achieve the effective separation of photogenerated carriers is introduced. Third, the methods to optimize the catalytic activity of NiS are mainly summarized. At the same time, the review summarizes the research progress of composite photocatalysts based on NiS cocatalyst. Finally, the review discusses the existing challenges and obstacles of NiS‐based photocatalytic systems and proposes feasible improvements and ideas to meet the future requirements of practical applications.

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Boosting the photosynthesis of hydrogen peroxide directly from pure water and air over S-scheme fiber heterojunction

Li,

Mei,

et al. 2024

Sci. China Mater.

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Investigating S-scheme charge transfer pathways in NiS@Ta2O5 hybrid nanofibers for photocatalytic CO2 conversion

Cited by 31 publications

References 74 publications

Ruthenium–Cobalt Solid-Solution Alloy Nanoparticles for Enhanced Photopromoted Thermocatalytic CO₂ Hydrogenation to Methane

Ruthenium–Cobalt Solid-Solution Alloy Nanoparticles for Enhanced Photopromoted Thermocatalytic CO₂ Hydrogenation to Methane

Research Progress of NiS Cocatalysts in Photocatalysis

Boosting the photosynthesis of hydrogen peroxide directly from pure water and air over S-scheme fiber heterojunction

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Investigating S-scheme charge transfer pathways in NiS@Ta2O5 hybrid nanofibers for photocatalytic CO2 conversion

Cited by 31 publications

References 74 publications

Ruthenium–Cobalt Solid-Solution Alloy Nanoparticles for Enhanced Photopromoted Thermocatalytic CO2 Hydrogenation to Methane

Ruthenium–Cobalt Solid-Solution Alloy Nanoparticles for Enhanced Photopromoted Thermocatalytic CO2 Hydrogenation to Methane

Research Progress of NiS Cocatalysts in Photocatalysis

Boosting the photosynthesis of hydrogen peroxide directly from pure water and air over S-scheme fiber heterojunction

Contact Info

Product

Resources

About

Ruthenium–Cobalt Solid-Solution Alloy Nanoparticles for Enhanced Photopromoted Thermocatalytic CO₂ Hydrogenation to Methane

Ruthenium–Cobalt Solid-Solution Alloy Nanoparticles for Enhanced Photopromoted Thermocatalytic CO₂ Hydrogenation to Methane