Confining single-atom Pd on g-C3N4 with carbon vacancies towards enhanced photocatalytic NO conversion

Liu, Guimei; Zhang, Shuai; Lv, Haiqin; Wang, Hui; Zeng, Yubin; Yuan, Mingzhe; Meng, Qi; Wang, Chuanyi

doi:10.1016/j.apcatb.2020.119683

Cited by 159 publications

(76 citation statements)

References 48 publications

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“…Besides, it is noted that g‐C 3 N 4 provides an underlying opportunity to establish a strong metal‐support interaction between single‐atom cocatalyst and g‐C 3 N 4 owing to numerous unsaturated atoms and a wide‐adjusted structure of g‐C 3 N 4 . [ 193 ] In recent work, Guo et al. [ 194 ] reported a strong metal‐support interaction between Pt single atom and g‐C 3 N 4 (PtSA‐CN) by an in situ photocatalytic reduction method at a sub‐zero temperature ( Figure a–c), and the as‐prepared PtSA‐CN showed an enhanced HER performance (Figure 16d).…”

Section: Modification Strategies Toward Cocatalystsmentioning

confidence: 99%

Emerging Cocatalysts on g‐C₃N₄ for Photocatalytic Hydrogen Evolution

Zhu

Qiu

et al. 2021

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Over the past few decades, graphitic carbon nitride (g‐C3N4) has arisen much attention as a promising candidate for photocatalytic hydrogen evolution reaction (HER) owing to its low cost and visible light response ability. However, the unsatisfied HER performance originated from the strong charge recombination of g‐C3N4 severely inhibits the further large‐scale application of g‐C3N4. In this case, the utilization of cocatalysts is a novel frontline in the g‐C3N4‐based photocatalytic systems due to the positive effects of cocatalysts on supressing charge carrier recombination, reducing the HER overpotential, and improving photocatalytic activity. This review summarizes some recent advances about the high‐performance cocatalysts based on g‐C3N4 toward HER. Specifically, the functions, design principle, classification, modification strategies of cocatalysts, as well as their intrinsic mechanism for the enhanced photocatalytic HER activity are discussed here. Finally, the pivotal challenges and future developments of cocatalysts in the field of HER are further proposed.

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Section: Modification Strategies Toward Cocatalystsmentioning

confidence: 99%

Emerging Cocatalysts on g‐C₃N₄ for Photocatalytic Hydrogen Evolution

Zhu

Qiu

et al. 2021

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“…It has been reported that the defects of the substrates such as cation and anion vacancies play critical roles in determining the coordination environments and electronic structures of metal centers. 96,112,144,145,213,[244][245][246][247][248][249][250][251] More specically, substrates with vacancies can be used for effectively anchoring metal SAs in the preparation process due to the offered coupling sites. The vacancies on the support surface in SACs can avoid the aggregation of SAs, create strong interactions between SAs and the substrate and form metal-metal bonds to keep active metals atomically dispersed, signicantly improving the photocatalytic performance.…”

Section: Defect Engineeringmentioning

confidence: 99%

Single-atom catalysts for high-efficiency photocatalytic and photoelectrochemical water splitting: distinctive roles, unique fabrication methods and specific design strategies

Liu

Ran

et al. 2022

J. Mater. Chem. A

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“…Carbon‐vacancy defects can also serve as anchoring sites for dopants or single atom catalysts 120,121 . For example, single atom Pd catalysts, which were coordinated with pyridinic nitrogen in the pristine g‐C 3 N 4 framework, exemplified a higher formation energy (4.27 eV) compared to Pd atoms anchored on the C‐defect sites through coordination with N atoms (<2.7 eV) 122 …”

Section: Role Of Carbon Nitride Modification Strategiesmentioning

confidence: 99%

Solar‐powered chemistry: Engineering low‐dimensional carbon nitride‐based nanostructures for selective CO₂ conversion to C₁C₂ products

Foo

Ong

2022

InfoMat

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CO2 capture and conversion has been prospected as an auspicious technology to simultaneously tackle the rise in global CO2 emission and produce value‐added fuels with the goal of accomplishing carbon neutrality. A sustainable route to achieve this is via the utilization of solar energy, thereby harnessing the abundant and nonexhaustive resource to shift our reliance away from rapidly depleting fossil fuels. Graphitic carbon nitride (g‐C3N4) and its allotrope have earned its rank as a fascinating metal‐free photocatalyst due to its superior stability, high surface‐area‐to‐volume ratio, and tunable surface engineering. By leveraging these properties, robust carbon nitride‐based nanostructures are engineered for photocatalytic CO2 conversion to energy‐rich C1C2 product, which is indispensable in the chemical industry. Thus, this review presents the latest panorama of experimental and computational research on tuning the local electronic, surface chemical coordination environment, charge dynamics and optical properties of low‐dimensional carbon nitride and its allotropes toward highly selective and efficient CO2 photoconversion. To name a few, structural engineering, point‐defect engineering, heterojunction construction, and cocatalyst loading. To advance this frontier, critical insights are elucidated to establish the structure‐performance relationship and unravel primary factors dictating the selectivity of C1C2 molecules from CO2 reduction. External‐field assisted photocatalysis such as with electric (photoelectro‐) and heat (photothermal) is discussed to uncover the synergistic contributions that drive the development in photochemistry. Last, future challenges and prospects are outlined for the potential application of solar‐driven CO2 conversion, along with the scale‐up strategy from the economic viewpoint toward the rational development of high‐efficiency carbon nitride catalysts.

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Confining single-atom Pd on g-C3N4 with carbon vacancies towards enhanced photocatalytic NO conversion

Cited by 159 publications

References 48 publications

Emerging Cocatalysts on g‐C₃N₄ for Photocatalytic Hydrogen Evolution

Emerging Cocatalysts on g‐C₃N₄ for Photocatalytic Hydrogen Evolution

Single-atom catalysts for high-efficiency photocatalytic and photoelectrochemical water splitting: distinctive roles, unique fabrication methods and specific design strategies

Solar‐powered chemistry: Engineering low‐dimensional carbon nitride‐based nanostructures for selective CO₂ conversion to C₁C₂ products

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Confining single-atom Pd on g-C3N4 with carbon vacancies towards enhanced photocatalytic NO conversion

Cited by 159 publications

References 48 publications

Emerging Cocatalysts on g‐C3N4 for Photocatalytic Hydrogen Evolution

Emerging Cocatalysts on g‐C3N4 for Photocatalytic Hydrogen Evolution

Single-atom catalysts for high-efficiency photocatalytic and photoelectrochemical water splitting: distinctive roles, unique fabrication methods and specific design strategies

Solar‐powered chemistry: Engineering low‐dimensional carbon nitride‐based nanostructures for selective CO2 conversion to C1C2 products

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Product

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About

Emerging Cocatalysts on g‐C₃N₄ for Photocatalytic Hydrogen Evolution

Emerging Cocatalysts on g‐C₃N₄ for Photocatalytic Hydrogen Evolution

Solar‐powered chemistry: Engineering low‐dimensional carbon nitride‐based nanostructures for selective CO₂ conversion to C₁C₂ products