High charge transfer response of g-C3N4/Ag/AgCl/BiVO4 microstructure for the selective photocatalytic reduction of CO2 to CH4 under alkali activation

Rather, Rayees Ahmad; Khan, Musharib; Lo, Irene Man Chi

doi:10.1016/j.jcat.2018.07.027

Cited by 77 publications

(29 citation statements)

References 41 publications

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“…Surface modification strategies show diversification in photocatalysts. Metal ions, [ 126 ] basic sites, [ 29 ] halogens [ 41 ] and amines, [ 127 ] etc. with different functions may be promising candidates for surface grafting decoration to enhance the activity and selectivity of CO 2 reduction of CH 4 .…”

Section: Discussionmentioning

confidence: 99%

“…[ 22 ] However, widespread adoption of CO 2 ‐to‐CH 4 photoreduction is hampered by the poor activity, [ 23 ] selectivity, [ 24 ] and stability [ 25 ] of presently available photocatalysts, motivating an exhaustive search for active and selective yet stable materials. Experimental catalyst engineering approaches for improving activity and selectivity include heterojunctions, [ 26 ] defect engineering, [ 27 ] cocatalysts, [ 28 ] surface modification, [ 29 ] facet engineering, [ 30 ] and single‐atom catalysis, [ 31 ] among which the former two have received the majority of attention in recent years (Figure 1b). However, it is also worth noting that single‐atom catalysis has very recently emerged as a new frontier in photocatalysis research.…”

Section: Introductionmentioning

confidence: 99%

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Emerging Strategies for CO₂ Photoreduction to CH₄: From Experimental to Data‐Driven Design

Cheng

Sun

Lim

et al. 2022

Advanced Energy Materials

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been described as a key metric for understanding the effects of global warming due to its direct impact on climate change. [2] Extensive modeling with energy-economyenvironment scenarios or projections to keep the global temperature from rising above 1.5 °C by the year 2100 shows that such a positive outlook is only possible if the global energy system is completely decarbonized (i.e., net-zero global CO 2 emissions) by mid-century, followed by active CO 2 removal (i.e., carbon-negative) in the second half of the century. [3] The catalytic conversion of CO 2 to valuable energy-related products (e.g., syngas, CH 4 , CH 3 OH, and longer-chain hydrocarbons) [4] by thermal reforming and hydrogenation, [5][6][7][8][9][10][11] electrocatalysis, [12][13][14] or photocatalysis [15] could occupy an important position in a future carbon-negative economy by directly replacing nonrenewable sources of these molecules, provided that the energy inputs to these processes are themselves derived from renewable sources. [16,17] In this regard, photocatalytic strategies stand out by not requiring a secondary medium of energy storage, and being able to realize the CO 2 conversion into high value-added fuels directly via renewable solar energy without external energy input. [18] Indeed, photocatalytic CO 2 reduction has been considered to be a "kill two birds with one stone" approach for sustainable energy production and greenhouse gas reduction. [19] In contrast, thermocatalytic approachesThe solar-energy-driven photoreduction of CO 2 has recently emerged as a promising approach to directly transform CO 2 into valuable energy sources under mild conditions. As a clean-burning fuel and drop-in replacement for natural gas, CH 4 is an ideal product of CO 2 photoreduction, but the development of highly active and selective semiconductor-based photocatalysts for this important transformation remains challenging. Hence, significant efforts have been made in the search for active, selective, stable, and sustainable photocatalysts. In this review, recent applications of cutting-edge experimental and computational materials design strategies toward the discovery of novel catalysts for CO 2 photocatalytic conversion to CH 4 are systematically summarized. First, insights into effective experimental catalyst engineering strategies, including heterojunctions, defect engineering, cocatalysts, surface modification, facet engineering, and single atoms, are presented. Then, datadriven photocatalyst design spanning density functional theory (DFT) simulations, high-throughput computational screening, and machine learning (ML) is presented through a step-by-step introduction. The combination of DFT, ML, and experiments is emphasized as a powerful solution for accelerating the discovery of novel catalysts for photocatalytic reduction of CO 2 . Last, challenges and perspectives concerning the interplay between experiments and data-driven rational design strategies for the industrialization of large-scale CO 2 photoreduction technologies are described.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Emerging Strategies for CO₂ Photoreduction to CH₄: From Experimental to Data‐Driven Design

Cheng

Sun

Lim

et al. 2022

Advanced Energy Materials

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“…This metal free semiconductor can be formed in many ways such as deposition-precipitation technique, 316,317 through solid phase method, 318,319 or hydrothermally. [320][321][322] In general, graphitic carbon nitride is a high temperature resistant n-type semiconductor. It is affordable and has a high CB, which attracted many researchers for a variety of applications such as H 2 generation, pollution degradation, and CO 2 reduction.…”

Section: Graphite Carbon Nitride Photocatalystmentioning

confidence: 99%

Recent advances in constructing heterojunctions of binary semiconductor photocatalysts for visible light responsiveCO₂reduction to energy efficient fuels: A review

Alhebshi

Aldeen

Mim

et al. 2021

Intl J of Energy Research

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Photocatalysis of carbon dioxide by the assistance of solar energy has been one of the most promising approaches to reduce CO 2 to renewable fuel. Several methods are pertained to enhance the photocatalytic activity for stimulating CO 2 reduction to selective fuels. Even though many researchers have been exploring methods of assembling a suitable semiconductor, practical constraints such as charge carrier recombination and low light utilization limit the photocatalytic activity. In this review, recent advancement in semiconductors and their characteristics toward the photoreduction of CO 2 has been comprehensively discussed. The major semiconductors that are discussed and analyzed based on their limitations in this review are TiO 2 , BiVO 4 , CdS, g-C 3 N 4 , ZnO, and MoS 2 -based composites. Initially, the fundamentals of heterogeneous photocatalysis such as the possible molecular pathways, product selectivity, and thermodynamics have been deliberated. Advancement in semiconductors in relation to quantum dots, heterojunction, and sacrificial reagent has been systematically analyzed. Doping and co-doping of semiconductors have proven to reduce the band gap notably and its outstanding electronic band position for the visible light photocatalysis has been identified. Furthermore, the developments of cocatalysts such as noble metals and nonmetals to stimulate photocatalysts performance in view of CO 2 reduction to value-added products have been disclosed. Specific developments in binary semiconductors through Z-scheme, S-scheme, and ternary heterojunction for charge separation and their characterization has been thoroughly deliberated. In addition, the role of doping, structural defects, as well as sensitization in enhancing the light harvesting abilities of the photocatalyst has been discoursed. The developments in photocatalytic reactors with their characteristics and limitations are also assiduously discussed. Finally, conclusions and future directions for photocatalysis of carbon dioxide toward renewable fuel production have been suggested.

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“…[188] As shown in Figure layers with poor vanadium vacancies. [192][193][194][195][196] 5.4. On the other hand, although such ac atalytic system is extremely attractive for liquid fuel generation, deactivation of BiVO 4 results in low reaction yields.…”

Section: Bivomentioning

confidence: 99%

“…Recently,m ore BiVO 4 -based heterojunctions, includingt ype II, and direct Z-scheme heterojunctions, such as BiVO 4 ÀAuÀCu 2 O, Au/TiO 2 /BiVO 4 ,C dS/BiVO 4 ,g -C 3 N 4 /Ag/ AgCl/BiVO 4 ,a nd BiVO 4 /carbon-coated Cu 2 O, were reported to improvet he photocatalytic CO 2 reduction activity of BiVO 4 . [192][193][194][195][196]…”

Section: Bivomentioning

confidence: 99%

Bismuth‐Based Photocatalysts for Solar Photocatalytic Carbon Dioxide Conversion

et al. 2019

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Reviews Figure 5. Characterization of bulk layered Bi 12 O 17 Cl 2 nanosheets. a) SEM image, b) top-view HRTEM image,c)SAED pattern, d) side-viewH RTEM image, e) crystal orientations, f) schematicillustration, g) side-view atomic-resolution high-angle annular dark-field scanningt ransmission electron microscopy (HAADF-STEM)i mage, and h-j) corresponding electron energy-loss spectroscopy( EELS) elemental maps.T he inset in d) showst he crystals tructure of bulk layered

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High charge transfer response of g-C3N4/Ag/AgCl/BiVO4 microstructure for the selective photocatalytic reduction of CO2 to CH4 under alkali activation

Cited by 77 publications

References 41 publications

Emerging Strategies for CO₂ Photoreduction to CH₄: From Experimental to Data‐Driven Design

Emerging Strategies for CO₂ Photoreduction to CH₄: From Experimental to Data‐Driven Design

Recent advances in constructing heterojunctions of binary semiconductor photocatalysts for visible light responsiveCO₂reduction to energy efficient fuels: A review

Bismuth‐Based Photocatalysts for Solar Photocatalytic Carbon Dioxide Conversion

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High charge transfer response of g-C3N4/Ag/AgCl/BiVO4 microstructure for the selective photocatalytic reduction of CO2 to CH4 under alkali activation

Cited by 77 publications

References 41 publications

Emerging Strategies for CO2 Photoreduction to CH4: From Experimental to Data‐Driven Design

Emerging Strategies for CO2 Photoreduction to CH4: From Experimental to Data‐Driven Design

Recent advances in constructing heterojunctions of binary semiconductor photocatalysts for visible light responsiveCO2reduction to energy efficient fuels: A review

Bismuth‐Based Photocatalysts for Solar Photocatalytic Carbon Dioxide Conversion

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Emerging Strategies for CO₂ Photoreduction to CH₄: From Experimental to Data‐Driven Design

Emerging Strategies for CO₂ Photoreduction to CH₄: From Experimental to Data‐Driven Design

Recent advances in constructing heterojunctions of binary semiconductor photocatalysts for visible light responsiveCO₂reduction to energy efficient fuels: A review