Near‐Infrared‐Driven Photocatalysts: Design, Construction, and Applications

Wang, Li; Xu, Xun; Cheng, Qunfeng; Dou, Shi Xue; Du, Yi

doi:10.1002/smll.201904107

Cited by 72 publications

(64 citation statements)

References 163 publications

(280 reference statements)

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“…About 48% of MB is degraded by WN NCs within 4 h in comparison with control group received NIR irradiation only, which is superior to previously reported NIR photocatalysts of up-conversion or polaron transfer. [5] Besides, the NIR-driven photocatalytic hydroxylation and de-esterification performance of colorless aromatic compounds, such as terephthalic acid (TPA) and 2′,7′-dichlorodihydrofluorescein diacetate (H 2 DCFDA), are also taken into assessment. The nonluminous TPA and H 2 DCFDA could be oxidized by ROS and form photoluminescent 2,5-dihydroxyterephthalic acid (DTPA) and 2′,7′-dichlorofluorescein (DCF).…”

Section: Resultsmentioning

confidence: 99%

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Plasmonic Enhanced Reactive Oxygen Species Activation on Low‐Work‐Function Tungsten Nitride for Direct Near‐Infrared Driven Photocatalysis

Huang

Gao

Ding

et al. 2020

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utilizing NIR light that takes up to about 50% of solar spectrum. One of the reasons is that the low energetic NIR photons only can be utilized to generate free carriers by narrow bandgap semiconductors, up-conversion luminescent material or some localized surface plasmon resonance (LSPR) enhanced noble metal nanomaterials. [3] These materials always suffer from single-wavelength response, poor chemical stability and potentials mismatching. In many cases, the chemical potentials of hole-electrons are not suitable to support the generation of ROS (•OH, •O 2 − and 1 O 2) through individual transition for previous materials. [4] What is more, the NIR-driven photocatalytic mechanism remains to be ambiguous due to the absence of theoretical investigation on the mechanism of NIR absorbance and surface/interface ROS generation kinetics. Therefore, exploiting highefficiency NIR-reactive photocatalyst and comprehensive understanding NIR-driven photocatalytic mechanism are urgent. [5] Compared with traditional semiconductive photocatalysts, metallic photocatalysts with higher carrier density, excellent conductivity, and low-work function open the door for the aimed NIR-responsive photocatalysis. Until now, many theoretical calculations and experimental results have revealed that low-work-function catalysts, such as Ti 3 C 2 T X MXene (Φ = 3.4 eV), halogen-doped monolayer g-C 3 N 4 (Φ = 3.3-4.15 eV), LaCu 0.67 S 1.33 (Φ = 3.5 eV) and MgO (Φ = 3.7 eV), can server as good electron donor and facilitate Realizing near-infrared (NIR) driven photocatalytic reaction is one of the promising strategies to promote the solar energy utilization and photocatalytic efficiencies. However, effective reactive oxygen species (ROS) activation under NIR irradiation remains to be great challenge for nearly all previously reported photocatalysts. Herein, the cubic-phase tungsten nitride (WN) with strong plasmonic NIR absorption and low-work function (≈3.59 eV) is proved to be able to mediate direct ROS activation by both of experimental observation and theoretical simulation. The cubic WN nanocubes (NCs) are synthesized via the hydrothermal-ammonia nitridation process and its NIR-driven photocatalytic properties, including photocatalytic degradation, hydroxylation, and de-esterification, are reported for the first time in this work. The 3D finite element simulation results demonstrate the size dependent and wavelength tuned plasmonic NIR absorption of the WN NCs. The NIR-driven photocatalytic mechanism of WN NCs is proposed based on density functional theory (DFT) calculated electronic structure and facet dependent O 2 (or H 2 O) molecular activation, radicals scavenging test, spin trapped electron paramagnetic resonance measurements, and ultraviolet photoelectronic spectrum (UPS). Overall, the results in this work pave a way for the application of low-workfunction materials as highly reactive NIR photocatalyst.

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Section: Resultsmentioning

confidence: 99%

“…Therefore, exploiting high‐efficiency NIR‐reactive photocatalyst and comprehensive understanding NIR‐driven photocatalytic mechanism are urgent. [ 5 ]…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Enhanced Reactive Oxygen Species Activation on Low‐Work‐Function Tungsten Nitride for Direct Near‐Infrared Driven Photocatalysis

Huang

Gao

Ding

et al. 2020

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“…This condition is conducive to boosting photocatalytic CO 2 reduction efficiency. 6)Prominent photothermal effect: Although it was reported that high temperature was not beneficial to photocatalytic reactions, more and more examples reveal that increased temperature can improve photocatalytic efficiency. [ 151,152 ] For example, Meng et al. [ 153 ] performed temperature‐controlled photocatalytic tests on g‐C 3 N 4 , TiO 2 , and ZnO.…”

Section: Advantages Of Ng In Photocatalysismentioning

confidence: 99%

Design, Fabrication, and Mechanism of Nitrogen‐Doped Graphene‐Based Photocatalyst

et al. 2021

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Solving energy and environmental problems through solar‐driven photocatalysis is an attractive and challenging topic. Hence, various types of photocatalysts have been developed successively to address the demands of photocatalysis. Graphene‐based materials have elicited considerable attention since the discovery of graphene. As a derivative of graphene, nitrogen‐doped graphene (NG) particularly stands out. Nitrogen atoms can break the undifferentiated structure of graphene and open the bandgap while endowing graphene with an uneven electron density distribution. Therefore, NG retains nearly all the advantages of original graphene and is equipped with several novel properties, ensuring infinite possibilities for NG‐based photocatalysis. This review introduces the atomic and band structures of NG, summarizes in situ and ex situ synthesis methods, highlights the mechanism and advantages of NG in photocatalysis, and outlines its applications in different photocatalysis directions (primarily hydrogen production, CO2 reduction, pollutant degradation, and as photoactive ingredient). Lastly, the central challenges and possible improvements of NG‐based photocatalysis in the future are presented. This study is expected to learn from the past and achieve progress toward the future for NG‐based photocatalysis.

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“…[ 28,29 ] Few reviews have been conducted about the development of NIR‐responsive composite photocatalysts. [ 30 ] Thus far, Wu and Butt summarized the investigation, preparation, and application of NIR‐sensitive materials based on UCNPs. [ 31 ] This pioneering work provides a comprehensive survey on the fabrication of NIR‐sensitive materials by using UCNPs‐assisted photochemical technology.…”

Section: Introductionmentioning

confidence: 99%

Near‐Infrared‐Responsive Photocatalysts

et al. 2021

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Broadening the absorption of light to the near‐infrared (NIR) region is important in photocatalysis to achieve efficient solar‐to‐fuel conversion. NIR‐responsive photocatalysts that can utilize diffusive solar energy are attractive for alleviating the energy crisis and environmental pollution. Over the past few years, considerable progress on the component and structural design of NIR‐responsive photocatalysts have been reported. This study aims to systematically summarize recent progress toward the material design and mechanism optimization of NIR‐responsive photocatalysts in this area. Depending on the main strategies for harvesting NIR photons, NIR‐responsive photocatalysts can be categorized as direct NIR‐light photocatalysts, indirect NIR‐light photocatalysts, and photothermal photocatalysts. Furthermore, the construction and application of different NIR‐responsive photocatalytic systems are summarized. Conclusions and perspectives are presented to further explore the potential of NIR‐responsive photocatalysts in this field.

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Near‐Infrared‐Driven Photocatalysts: Design, Construction, and Applications

Cited by 72 publications

References 163 publications

Plasmonic Enhanced Reactive Oxygen Species Activation on Low‐Work‐Function Tungsten Nitride for Direct Near‐Infrared Driven Photocatalysis

Plasmonic Enhanced Reactive Oxygen Species Activation on Low‐Work‐Function Tungsten Nitride for Direct Near‐Infrared Driven Photocatalysis

Design, Fabrication, and Mechanism of Nitrogen‐Doped Graphene‐Based Photocatalyst

Near‐Infrared‐Responsive Photocatalysts

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