Visible Light CO2 Reduction to CH4 Using Hierarchical Yolk@shell TiO2–xHx Modified with Plasmonic Au–Pd Nanoparticles

Ziarati, Abolfazl; Luque, Rafael; Dadras, M.; Bürgi, Thomas

doi:10.1021/acssuschemeng.9b06751

Cited by 51 publications

(35 citation statements)

References 43 publications

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“…Subsequently, Pt nanoparticles played a pivotal role in gathering the electrons from the CB of TiO 2 nanocrystals and transferred them to rGO; as a result, the photogenerated electrons reached a tiny region of the wrapped rGO shell and participated in the CO 2 reduction reaction while the left holes on the VB of TiO 2 reacted with water to generate oxygen. Similar previously published works with high value are also available here, 84,122‐125 which highlight the importance of core‐shell structure engineering and offer a novel idea for catalyst design. However, progress toward encapsulation technology in artificial photosynthesis is still at an early stage, and further in‐depth and rigorous investigations are required, both in synthesis methods and fundamental understanding of the reaction mechanisms behind and the mutual relationship between structures and properties.…”

Section: Design and Synthesis Of Efficient Photocatalystssupporting

confidence: 84%

Engineering approach toward catalyst design for solar photocatalytic CO ₂ reduction: A critical review

Zhang

et al. 2021

Int J Energy Res

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Summary Solar‐driven converting CO2 to value‐added chemicals can not only address the ever‐growing energy crisis, but also simultaneously mitigate CO2 emission. Although much progress has been made in the last decade, it still remains great challenge to achieve the efficient reduction of CO2 with desirable productivity and high product selectivity because CO2 is a thermodynamically stable and inert molecule with large bond energy. Design and synthesis of efficient catalyst play a pivotal role in promoting the activity and selectivity of photocatalytic CO2 reduction. Apart from the active sites engineering, manipulation of the charge separation and light harvesting efficiency or prolonging the lifetime of photogenerated carriers also greatly matters. Consequently, this review summarizes recent advances in photocatalyst design for CO2 conversion from two major aspects, namely active sites engineering and carriers lifespan prolonging. Firstly, we sort out the fundamental principles and merits of artificial photosynthesis in order to provide readers with a current snapshot of this rapidly developed field. Subsequently, various catalyst engineering strategies, including doping, alloying, Z‐scheme structure construction, are discussed in detail. Finally, some challenging issues as well as insights into the future development of artificial photosynthesis are presented.

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Section: Design and Synthesis Of Efficient Photocatalystssupporting

confidence: 84%

Engineering approach toward catalyst design for solar photocatalytic CO ₂ reduction: A critical review

Zhang

et al. 2021

Int J Energy Res

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“…The conversions of CO 2 into valuable products, such as CH 4 , [ 43–50 ] CH 3 OH, [ 51–55 ] or HCOOH, [ 56–61 ] have been reported, but the yield and selectivity of these products still need to be improved. [ 62 ] As the most common product in gas system, CO formation just requires two protons and two electrons, whereas CH 4 formation needs eight protons and electrons and prefers to be produced on noble metal cocatalysts.…”

Section: Overview Of Photocatalysts For Co2 Reductionmentioning

confidence: 99%

Inside‐and‐Out Semiconductor Engineering for CO₂ Photoreduction: From Recent Advances to New Trends

et al. 2020

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Photocatalytic CO2 reduction attracts substantial interests for the production of chemical fuels via solar energy conversion, but the activity, stability, and selectivity of products were severely determined by the efficiencies of light harvesting, charge migration, and surface reactions. Structural engineering is a promising tactic to address the aforementioned crucial factors for boosting CO2 photoreduction. Herein, a timely and comprehensive review focusing on the recent advances in photocatalytic CO2 conversion based on the design strategies over nano‐/microstructure, crystalline and band structure, surface structure and interface structure is provided, which covers both the thermodynamic and kinetic challenges in CO2 photoreduction process. The key parameters essential for tailoring the size, morphology, porosity, bandgap, surface, or interfacial properties of photocatalysts are emphasized toward the efficient and selective conversion of CO2 into valuable chemicals. New trends and strategies in the structural design to meet the demands for prominent CO2 photoreduction activity are also introduced. It is expected to furnish a comprehensive guideline for inside‐and‐out design of state‐of‐the‐art photocatalysts with well‐defined structures for CO2 conversion.

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“…Enhanced CO 2 photoreduction by fabricating various metal-semiconductor arrangements, including core-shell and other nature-inspired designs such as nanoflowers, nanodendrites, etc., has been explored for various combinations of plasmonic metal and semiconductor. [106,107,109,[125][126][127][128] An important aspect to consider is the synergy between surface strain (improves adsorption) and interfacial polarization (difference in work function/electronegativity promotes charge transfer) that is achieved the maximum in core-shell structure, as explored by Cai et al in Pd@Au core-shell over TiO 2 photocatalyst. [128] Both the effects were modulated by Au thickness.…”

Section: Wwwadvmatinterfacesde 10 Plasmonic-metal/semiconductor Heter...mentioning

confidence: 99%

Recent Progress and Challenges in Plasmon‐Mediated Reduction of CO₂ to Chemicals and Fuels

Mittal

Ahlawat

Rao

2022

Adv Materials Inter

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Meanwhile, global energy demands also continue to rise. In such a situation, inspiration from nature's process of photosynthesis can be taken to target both the challenges, and artificial systems can be employed that recycle atmospheric CO 2 into valuable hydrocarbon fuels. [2,3] At the outset, artificial photosynthesis seems a straightforward and sustainable approach. However, conversion of CO 2 into value-added chemicals such as, carbon monoxide (CO), formic acid (HCOOH), methanol (CH 3 OH), methane (CH 4 ), and other C 2+ products is an endergonic process, involving a significant positive change in Gibbs free energy. [4] Also, kinetics and product selectivity are major challenges to tackle. While the energy barriers might be surpassed by thermal or electrical energy input to catalysts, economic feasibility, product yields, and selectivity are complex factors. A better strategy is to utilize solar energy to drive the thermodynamically uphill reactions and produce chemical fuels in a renewable and sustainable way. Moreover, the light excitation of catalysts allows more controlled CO 2 reduction. Nanotechnology in this scenario provides myriad opportunities to develop photocatalysts that produce electron-hole pairs upon light illumination and carry out the required chemical transformation. Semiconductor materials, mainly titania (TiO 2 ), have dominated the photocatalysis field but pose constraints regarding limited visible light absorption (while visible light constitutes ≈46% of the sunlight) and other factors. [5][6][7][8] As such, the quest to develop an efficient alternative has recently led to the emergence of photocatalysts consisting of plasmonic metal nanoparticles, mainly Au, Ag, Cu, and Al, that can harvest visible light with high optical cross-section and serve as a platform for surface catalyzed reactions. [9][10][11][12][13] Plasmonic nanostructures exhibit strong interaction with the incident electromagnetic radiation and trigger localized surface plasmon resonance (LSPR), leading to enhancement of local electric fields and subsequent generation of energetic charge carriers and heat that can be exploited in tremendous applications of chemical transformation. [14] The energetic charge carriers are generated with a non-equilibrium distribution, and their potential energy depends upon the electronic band structure of the nanomaterial. This regulates their overall contribution to the chemical reaction's free energy and the extent of activation of the reactants. Recent theoretical and experimentalThe realization of the strong interaction of plasmonic nanostructures with electromagnetic radiation, subdiffraction-limit field localization, and unusually high field enhancement enables immense opportunities to harness visible light in the field of photocatalysis. Plasmon-induced energetic charge carriers allow the metal nanostructures to catalyze surface reactions with selective pathways that are rather a holy grail of thermal catalysis. An intriguing application of plasmonic photocatalysis includes sequestr...

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Visible Light CO₂ Reduction to CH₄ Using Hierarchical Yolk@shell TiO_2–xH_x Modified with Plasmonic Au–Pd Nanoparticles

Cited by 51 publications

References 43 publications

Engineering approach toward catalyst design for solar photocatalytic CO ₂ reduction: A critical review

Engineering approach toward catalyst design for solar photocatalytic CO ₂ reduction: A critical review

Inside‐and‐Out Semiconductor Engineering for CO₂ Photoreduction: From Recent Advances to New Trends

Recent Progress and Challenges in Plasmon‐Mediated Reduction of CO₂ to Chemicals and Fuels

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Visible Light CO2 Reduction to CH4 Using Hierarchical Yolk@shell TiO2–xHx Modified with Plasmonic Au–Pd Nanoparticles

Cited by 51 publications

References 43 publications

Engineering approach toward catalyst design for solar photocatalytic CO 2 reduction: A critical review

Engineering approach toward catalyst design for solar photocatalytic CO 2 reduction: A critical review

Inside‐and‐Out Semiconductor Engineering for CO2 Photoreduction: From Recent Advances to New Trends

Recent Progress and Challenges in Plasmon‐Mediated Reduction of CO2 to Chemicals and Fuels

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Product

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About

Visible Light CO₂ Reduction to CH₄ Using Hierarchical Yolk@shell TiO_2–xH_x Modified with Plasmonic Au–Pd Nanoparticles

Engineering approach toward catalyst design for solar photocatalytic CO ₂ reduction: A critical review

Engineering approach toward catalyst design for solar photocatalytic CO ₂ reduction: A critical review

Inside‐and‐Out Semiconductor Engineering for CO₂ Photoreduction: From Recent Advances to New Trends

Recent Progress and Challenges in Plasmon‐Mediated Reduction of CO₂ to Chemicals and Fuels