Boosting the Photocatalytic Ability of Cu<sub>2</sub>O Nanowires for CO<sub>2</sub> Conversion by MXene Quantum Dots

Zeng, Zhiping; Yan, Yibo; Chen, Jie; Zan, Ping; Tian, Qinghua; Chen, Peng

doi:10.1002/adfm.201806500

Cited by 392 publications

(261 citation statements)

References 60 publications

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Section: Mxene‐based Catalysts For Photocatalysismentioning

confidence: 99%

“…In additional to the 2D/2D heterojunction, MXenes‐based heterostructures with reduced dimensional were also developed for efficient CO 2 conversion. Zeng et al reported the 0D MXene quantum dots (QDs) derived from 2D Ti 3 C 2 MXene and their coupling with 1D Cu 2 O nanowires (NWs) for the 0D/1D heterostructures . The Ti 3 C 2 QDs/Cu 2 O NWs/Cu delivered a CH 3 OH yield of 153.38 ppm cm −2 , which was 2.15 times of that from Ti 3 C 2 sheets/Cu 2 O NWs/Cu and 8.25 times of that from Cu 2 O NWs/Cu.…”

Section: Mxene‐based Catalysts For Photocatalysismentioning

confidence: 99%

“…Zeng et al reported the 0D MXene quantum dots (QDs) derived from 2D Ti 3 C 2 MXene and their coupling with 1D Cu 2 O nanowires (NWs) for the 0D/1D heterostructures. [45] The Ti 3 [24] Copyright 2017, Springer Nature. d) SEM image of TiO 2 /Ti 3 C 2 T x catalyst showing the rice-crust structure.…”

Section: Photocatalytic Co 2 Reductionmentioning

confidence: 99%

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2D Early Transition Metal Carbides (MXenes) for Catalysis

2019

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MXenes, a bourgeoning class of 2D transition metal carbides, are of considerable interest in catalysis due to their rich surface chemistry, tunable electronic structures, and thermal stability. Here, recent conceptual advances in applying MXenes and their nanocomposites in (photo)electrocatalysis and conventional heterogeneous catalysis are highlighted. In addition, the nature of active sites in the MXene‐based catalysts are discussed and the significance and challenges in the future development of catalysts using MXenes as the platforms are summarized.

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Section: Mxene‐based Catalysts For Photocatalysismentioning

confidence: 99%

Section: Mxene‐based Catalysts For Photocatalysismentioning

confidence: 99%

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2D Early Transition Metal Carbides (MXenes) for Catalysis

2019

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“…[1][2][3][4][5] Photocatalytic CO 2 reduction into chemical fuels powered by [1][2][3][4][5] Photocatalytic CO 2 reduction into chemical fuels powered by …”

Section: Introductionmentioning

confidence: 99%

Graphdiyne: A New Photocatalytic CO₂ Reduction Cocatalyst

Meng

Zhu

et al. 2019

Adv Funct Materials

240

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Exploring new and efficient cocatalysts to boost photocatalytic CO 2 reduction is of critical importance for solar-to-fuel conversion. As an emerging carbon allotrope, graphdiyne (GDY) features 2D characteristics and unique carboncarbon bonds. Herein, a novel GDY cocatalyst coupled TiO 2 nanofibers for boosted photocatalytic CO 2 reduction, synthesized by an electrostatic selfassembly approach is reported. First-principle calculation and in situ X-ray photoelectron spectroscopy measurement reveal that the delocalized electrons in GDY can hybrid with the empty orbitals in TiO 2 within the TiO 2 /GDY network, leading to the formation of an internal electric field at the interfaces, pointing from GDY to TiO 2 . The theoretical simulation further implies strong chemisorption and deformation of CO 2 molecules upon GDY, which can be verified by in situ diffuse reflectance infrared Fourier transform spectroscopy. These effects, in combination with the photothermal effect of GDY, result in enhanced charge separation and directed electron transfer, enhanced CO 2 adsorption and activation as well as accelerated catalytic reactions over the TiO 2 /GDY heterostructure, thereby resulting in significantly improved CO 2 photoreduction efficiency and meanwhile with remarkable selectivity. This work demonstrates that GYD can function as a highly effective cocatalyst for solar energy harvesting and may be used in other catalysis processes.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201904256. solar irradiation is recognized as a potential solution to these issues. [6][7][8][9][10][11] As one of the most popular photocatalytic materials, TiO 2 is chemically stable, nontoxic and earth-abundant to be proverbially utilized for CO 2 photoreduction. [12][13][14][15][16] However, the photocatalytic efficiency of unitary TiO 2 is still far away from the practical requirements largely due to its rapid electron-hole recombination. [17][18][19][20] Modifying TiO 2 with a cocatalyst has been widely adopted to tackle this issue owing to the advantages of cocatalysts such as improving the selectivity, minimizing the overpotentials, promoting the charge separation, enhancing the adsorption of CO 2 , suppressing the photocorrosion and so on. [21,22] Up to now, various cocatalysts have been exploited to promote the photocatalytic performance of TiO 2 and the most widely used cocatalysts were noble metals, such as Pt, Pd, Au, Ag, and their alloys. [23][24][25][26][27][28] However, noble metals are scarce and expensive, hindering their prospect severely. Therefore, it is of significance to search for novel cocatalysts for TiO 2 -based photocatalyst to improve the photocatalytic CO 2 reduction performance.Carbon allotropes such as 0D carbon dot, 1D carbon nanotube and 2D graphene have attracted significant interests in many fields including catalysis, new device structures and solar energy harvesting. [29][30][31] Particularly, the discovery of graphene has raised a wave of new ...

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“…The Mott-Schottky (MS) patterns of the nanocomposites are measured to investigate its at band potential and charge density, [44][45][46][47][48][49][50] as shown in Fig. 6c.…”

Section: Resultsmentioning

confidence: 99%

One-pot synthesis of Cu₂O/C@H-TiO₂ nanocomposites with enhanced visible-light photocatalytic activity

Jian

Wang

et al. 2019

RSC Adv.

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Boosting the Photocatalytic Ability of Cu₂O Nanowires for CO₂ Conversion by MXene Quantum Dots

Cited by 392 publications

References 60 publications

2D Early Transition Metal Carbides (MXenes) for Catalysis

2D Early Transition Metal Carbides (MXenes) for Catalysis

Graphdiyne: A New Photocatalytic CO₂ Reduction Cocatalyst

One-pot synthesis of Cu₂O/C@H-TiO₂ nanocomposites with enhanced visible-light photocatalytic activity

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Boosting the Photocatalytic Ability of Cu2O Nanowires for CO2 Conversion by MXene Quantum Dots

Cited by 392 publications

References 60 publications

2D Early Transition Metal Carbides (MXenes) for Catalysis

2D Early Transition Metal Carbides (MXenes) for Catalysis

Graphdiyne: A New Photocatalytic CO2 Reduction Cocatalyst

One-pot synthesis of Cu2O/C@H-TiO2 nanocomposites with enhanced visible-light photocatalytic activity

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Product

Resources

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Boosting the Photocatalytic Ability of Cu₂O Nanowires for CO₂ Conversion by MXene Quantum Dots

Graphdiyne: A New Photocatalytic CO₂ Reduction Cocatalyst

One-pot synthesis of Cu₂O/C@H-TiO₂ nanocomposites with enhanced visible-light photocatalytic activity