Platinum single-atoms anchored covalent triazine framework for efficient photoreduction of CO2 to CH4

Huang, Guocheng; Niu, Qing; Zhang, Jiangwei; Hu, Haitao; Chen, Qiaoshan; Bi, Jinhong; Wu, Ling

doi:10.1016/j.cej.2021.131018

Cited by 72 publications

(52 citation statements)

References 87 publications

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“…This is an impressive example of how SACs can be used to selectively control reactions with a significantly reduced amount of precious metal. In contrast, supported Pt single atoms by triazine covalent organic framework (COF) were found highly active to methanation under visible light illumination [137]. These results confirm again the concept that the activity of single atoms toward a specific product is strongly dependent on the support material, reaction conditions, and regime of catalysts used (e.g., photocatalysis versus thermocatalytic reactions).…”

Section: Pt-single-atom Catalystssupporting

confidence: 61%

“…These results confirm again the concept that the activity of single atoms toward a specific product is strongly dependent on the support material, reaction conditions, and regime of catalysts used (e.g., photocatalysis versus thermocatalytic reactions). Interestingly, the activity of Pt-supported triazine COF catalysts is significantly lower than that detected on the Pt SAC catalyst [137]. These aspects should be examined more in depth in the future, in particular the effect of support material on the activity and selectivity toward a specific product.…”

Section: Pt-single-atom Catalystsmentioning

confidence: 93%

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Review of CO2 Reduction on Supported Metals (Alloys) and Single-Atom Catalysts (SACs) for the Use of Green Hydrogen in Power-to-Gas Concepts

Abdel‐Mageed

Wohlrab

2021

Catalysts

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The valorization of carbon dioxide by diverting it into useful chemicals through reduction has recently attracted much interest due to the pertinent need to curb increasing global warming, which is mainly due to the huge increase of CO2 emissions from domestic and industrial activities. This approach would have a double benefit when using the green hydrogen generated from the electrolysis of water with renewable electricity (solar and wind energy). Strategies for the chemical storage of green hydrogen involve the reduction of carbon dioxide to value-added products such as methane, syngas, methanol, and their derivatives. The reduction of CO2 at ambient pressure to methane or carbon monoxide are rather facile processes that can be easily used to store renewable energy or generate an important starting material for chemical industry. While the methanation pathway can benefit from existing infrastructure of natural gas grids, the production of syngas could be also very essential to produce liquid fuels and olefins, which will also be in great demand in the future. In this review, we focus on the recent advances in the thermocatalytic reduction of CO2 at ambient pressure to basically methane and syngas on the surface of supported metal nanoparticles, single-atom catalyst (SACs), and supported bimetallic alloys. Basically, we will concentrate on activity, selectivity, stability during reaction, support effects, metal-support interactions (MSIs), and on some recent approaches to control and switch the CO2 reduction selectivity between methane and syngas. Finally, we will discuss challenges and requirements for the successful introduction of these processes in the cycle of renewable energies. All these aspects are discussed in the frame of sustainable use of renewable energies.

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Section: Pt-single-atom Catalystssupporting

confidence: 61%

Section: Pt-single-atom Catalystsmentioning

confidence: 93%

Review of CO2 Reduction on Supported Metals (Alloys) and Single-Atom Catalysts (SACs) for the Use of Green Hydrogen in Power-to-Gas Concepts

Abdel‐Mageed

Wohlrab

2021

Catalysts

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“…[134,136,145,152,170] Huang et al incorporated Pt SAs in an alternative support, a covalent triazine network (Pt-SA/ CTF), to realize a catalyst with improved catalytic activity and stability. [176] The Pt SAs coordinate with N and C atoms to promote CO 2 adsorption and accelerate charge separation. Similar studies based on SAs of Au, [155,172,177] Pd, [136,166] and Ru [178,179] have been conducted as discussed in Section 4.…”

Section: Noble Metal-based Sacsmentioning

confidence: 99%

Single‐Atom Catalysts (SACs) for Photocatalytic CO₂ Reduction with H₂O: Activity, Product Selectivity, Stability, and Surface Chemistry

Hiragond

Powar

Lee

et al. 2022

Small

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electrochemical, [7][8][9] thermo-, [10,11] and biocatalysis. [12,13] Converting CO 2 using readily available sunlight and water is one of the most promising strategies due to the following advantages: i) it utilizes solar light, a renewable energy, to drive the reduction of CO 2 , ii) it can convert CO 2 into valuable carbonaceous products like CO, CH 4 , C 2 H 6 , and CH 3 OH, iii) it operates under atmospheric conditions, iv) it is a controllable process, and v) it is scalable for industrial application. [14,15] Thus, converting undesirable CO 2 into value-added chemicals using artificial photosynthesis is a plausible way to address the current environmental and energy issues associated with the burning of fossil fuels. [16] Given the significance of photocatalytic CO 2 conversion, researchers have extensively researched various catalysts, such as metal oxides, alloys, chalcogenides, carbon-based structures, organic polymers, inorganic complexes, and MXenes. [17][18][19][20][21][22][23][24][25][26] However, low productivity, poor product selectivity, poor long-term stability, sluggish mechanisms, and economic unviability limit the application of these conventional catalysts. Furthermore, the solar to fuel conversion efficiency of most reported catalysts is less than 1%, which is insufficient for large-scale applications. Accordingly, the need for high-performance and economically viable catalysts has prompted research organizations to design and synthesize a range of materials that can advance CO 2 reduction technology and its commercial viability.It has been recognized that the downsizing of nanoparticles (NPs) of a catalyst exposes more active sites, leading to the optimization of its electronic properties. [27] Recently, catalysts based on size-and shape-controlled, atomically dispersed metals have garnered the attention of the scientific community for various energy and environmental applications. [28,29] Single-atom (SA) catalysts (SACs) are obtained once the size and aggregation of metal particles are reduced to isolated metal atoms, which form low coordination states and enable the use of almost 100% of active metal sites; the electronic properties of metal SAs differ from those of corresponding bulk materials. [30,31] In nature, the magnesium porphyrin complex in chlorophyll has an SA-like structure necessary for photosynthesis; the iron porphyrin complex in cytochrome has a similar SA-like structure which plays a vital role in the molecular transfer of CO 2 . [32][33][34] In recent years, single-atom catalysts (SACs) have attracted the interest of researchers owing to their suitability for various catalytic applications. For instance, their optoelectronic features, site-specific activity, and costeffectiveness make SACs ideal for photocatalytic CO 2 reduction. The activity, product selectivity, and photostability of SACs depend on various factors such as the nature of the metal/support material, the interaction between the metal atoms and support, light-harvesting ability, charge separation behavior, ...

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“…[ 4 ] Compared with CO, CH 4 is a more valuable chemical, yet the production of CH 4 is more challenging in view of the complexity and kinetics difficulty of eight electron transfer for CH 4 through CO 2 PR. The pioneered work reported some photocatalysts that can realize the CH 4 production, such as oxides, [ 5 ] precious metals, [ 6 ] single atoms, [ 7 ] and covalent organic polymers. [ 8 ] Nevertheless, their performances for CH 4 selectivity, are still not satisfying, which is probably due to the lack of effective reaction sites for CH 4 formation and severe electron‐hole recombination.…”

Section: Introductionmentioning

confidence: 99%

Rational Regulation of Electronic Structure in Layered Double Hydroxide Via Vanadium Incorporation to Trigger Highly Selective CO₂ Photoreduction to CH₄

Tan

Bai

et al. 2022

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Platinum single-atoms anchored covalent triazine framework for efficient photoreduction of CO2 to CH4

Cited by 72 publications

References 87 publications

Review of CO2 Reduction on Supported Metals (Alloys) and Single-Atom Catalysts (SACs) for the Use of Green Hydrogen in Power-to-Gas Concepts

Review of CO2 Reduction on Supported Metals (Alloys) and Single-Atom Catalysts (SACs) for the Use of Green Hydrogen in Power-to-Gas Concepts

Single‐Atom Catalysts (SACs) for Photocatalytic CO₂ Reduction with H₂O: Activity, Product Selectivity, Stability, and Surface Chemistry

Rational Regulation of Electronic Structure in Layered Double Hydroxide Via Vanadium Incorporation to Trigger Highly Selective CO₂ Photoreduction to CH₄

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Platinum single-atoms anchored covalent triazine framework for efficient photoreduction of CO2 to CH4

Cited by 72 publications

References 87 publications

Review of CO2 Reduction on Supported Metals (Alloys) and Single-Atom Catalysts (SACs) for the Use of Green Hydrogen in Power-to-Gas Concepts

Review of CO2 Reduction on Supported Metals (Alloys) and Single-Atom Catalysts (SACs) for the Use of Green Hydrogen in Power-to-Gas Concepts

Single‐Atom Catalysts (SACs) for Photocatalytic CO2 Reduction with H2O: Activity, Product Selectivity, Stability, and Surface Chemistry

Rational Regulation of Electronic Structure in Layered Double Hydroxide Via Vanadium Incorporation to Trigger Highly Selective CO2 Photoreduction to CH4

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Single‐Atom Catalysts (SACs) for Photocatalytic CO₂ Reduction with H₂O: Activity, Product Selectivity, Stability, and Surface Chemistry

Rational Regulation of Electronic Structure in Layered Double Hydroxide Via Vanadium Incorporation to Trigger Highly Selective CO₂ Photoreduction to CH₄