Mesoporous g-C3N4/MXene (Ti3C2Tx) heterojunction as a 2D electronic charge transfer for efficient photocatalytic CO2 reduction

Li, Xing; Bai, Yang; Shi, Xian; Huang, Jinde; Zhang, Kai; Ren, Wei; Ye, Liqun

doi:10.1016/j.apsusc.2021.149111

Cited by 69 publications

(26 citation statements)

References 32 publications

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“…The enhanced 2D/2D Ti 3 C 2 /g-C 3 N 4 heterojunction performance was due to creating the intimate interface contact and quicker electron transfer. Furthermore, the composite demonstrated strong chemisorption of CO 2 and was conducive to the activation of CO 2 , to stimulate the photocatalytic reaction of CO 2 to fuels . In another research, through direct heating of the mixture of mesoporous g-C 3 N 4 and Ti 3 C 2 T x , mesoporous g-C 3 N 4 /Ti 3 C 2 T x was obtained.…”

Section: Mxene As a Co-catalyst For Photocatalytic Co2 Reductionmentioning

confidence: 96%

Titanium Carbide (Ti₃C₂) MXene as a Promising Co-catalyst for Photocatalytic CO₂ Conversion to Energy-Efficient Fuels: A Review

et al. 2021

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Photocatalytic CO2 reduction to produce valuable chemicals and fuels using solar energy provides an appealing route to alleviate global energy and environmental problems. However, available semiconductor materials are less efficient to promote CO2 conversion to energy-efficient fuels. In the current development, titanium carbide (Ti3C2) MXene as a co-catalyst with a high conductivity, abundant active sites, and large specific surface area, is a preeminent candidate to promote semiconductor photoactivity. This review provides an overview in the utilization of Ti3C2 as a promising co-catalyst for maximizing CO2 reduction efficiency and product selectivity. In the mainstream, developments in Ti3C2 MXene-based composites for CO2 conversion through different processes, such as CO2 reduction with water, photocatalytic CO2 methanation, and natural gas flaring reduction to synthesis gas, have been discussed. The review also gives an overview of the factors crucial to affect photocatalytic properties of Ti3C2, such as morphological, electrical, optical, and luminescence characteristics. The fundamental mechanism of Ti3C2T x for photocatalytic reduction of CO2 and strategies to improve the photocatalytic performance are also described. The great emphasis is given on in situ TiO2 production and hybridization with other semiconductors to obtain an efficient co-catalyst for selective CO2 reduction. Lastly, conclusions and future prospectives to further explore in the field of energy and fuels are included.

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Section: Mxene As a Co-catalyst For Photocatalytic Co2 Reductionmentioning

confidence: 96%

Titanium Carbide (Ti₃C₂) MXene as a Promising Co-catalyst for Photocatalytic CO₂ Conversion to Energy-Efficient Fuels: A Review

et al. 2021

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“…In another study, mmesoporous g-C 3 N 4 /Ti 3 C 2 T x showed excellent photocatalytic activity and the mechanism can be seen in Figure 37A. 348 The Ti 3 C 2 T x acts as excellent capacitor for the separation of the charges while the mesoporous g-C 3 N 4 provides great surface area for the CO 2 adsorption, which led to a CH 4 generation rate of 2.117 μmol h À1 g À1 . Z-scheme and type II heterojunction formation facilitates electrons and holes separation and utilizes the powerful reduction and oxidation potential as seen in Figure 37C.…”

Section: Conservative Heterojunctionmentioning

confidence: 93%

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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“…However, there are still some limitations in the g-C 3 N 4 -based photocatalytic process, such as low quantum efficiency, high rapid recombination rate of photogenerated electron–hole pairs, and low electrical conductivity, which lead to poor photocatalytic performance. The performance of g-C 3 N 4 has been improved by a variety of methods, including metal and nonmetal doping and the preparation of composites with other semiconductors. − …”

Section: Photocatalytic Reduction Of Carbon Dioxide With Various Ligh...mentioning

confidence: 99%

Research Progress on CO₂ Photocatalytic Reduction with Full Solar Spectral Responses

et al. 2021

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Photoreduction of CO 2 can effectively alleviate the troublesome global energy crisis and environmental problems by converting CO 2 into hydrocarbons. Due to the discovery of photocatalysts that can respond to infrared light, the application of full spectrum in photocatalysis has attracted many researchers. This review comprehensively summarizes the progress in CO 2 photocatalytic reduction based on full-spectrum photocatalytic systems, and the basic theory of photoresponse, the mechanism of photocatalysis and photoreduction of CO 2 , and the representative photocatalytic materials working under ultraviolet, visible, and infrared irradiation are discussed. The strategies and related mechanisms of realizing full-spectrum photocatalysis are introduced, and the contribution of photoreactors to CO 2 photocatalytic reduction is also mentioned. Finally, the application prospects of light-driven reactions in CO 2 reduction are prospected. It is hoped that this review can offer clearer guidance for CO 2 reduction and construction of full spectrum-driven photocatalyst for efficient photocatalytic CO 2 reduction in the future.

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Mesoporous g-C3N4/MXene (Ti3C2Tx) heterojunction as a 2D electronic charge transfer for efficient photocatalytic CO2 reduction

Cited by 69 publications

References 32 publications

Titanium Carbide (Ti₃C₂) MXene as a Promising Co-catalyst for Photocatalytic CO₂ Conversion to Energy-Efficient Fuels: A Review

Titanium Carbide (Ti₃C₂) MXene as a Promising Co-catalyst for Photocatalytic CO₂ Conversion to Energy-Efficient Fuels: A Review

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

Research Progress on CO₂ Photocatalytic Reduction with Full Solar Spectral Responses

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Mesoporous g-C3N4/MXene (Ti3C2Tx) heterojunction as a 2D electronic charge transfer for efficient photocatalytic CO2 reduction

Cited by 69 publications

References 32 publications

Titanium Carbide (Ti3C2) MXene as a Promising Co-catalyst for Photocatalytic CO2 Conversion to Energy-Efficient Fuels: A Review

Titanium Carbide (Ti3C2) MXene as a Promising Co-catalyst for Photocatalytic CO2 Conversion to Energy-Efficient Fuels: A Review

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

Research Progress on CO2 Photocatalytic Reduction with Full Solar Spectral Responses

Contact Info

Product

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Titanium Carbide (Ti₃C₂) MXene as a Promising Co-catalyst for Photocatalytic CO₂ Conversion to Energy-Efficient Fuels: A Review

Titanium Carbide (Ti₃C₂) MXene as a Promising Co-catalyst for Photocatalytic CO₂ Conversion to Energy-Efficient Fuels: A Review

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

Research Progress on CO₂ Photocatalytic Reduction with Full Solar Spectral Responses