Nitrogen vacancy engineered graphitic C3N4-based polymers for photocatalytic oxidation of aromatic alcohols to aldehydes

Ding, Jing; Xu, Wenyuan; Wan, Hui; Yuan, Dashui; Chen, Chong; Wang, Lei; Guan, Guofeng; Dai, Wei‐Lin

doi:10.1016/j.apcatb.2017.09.048

Cited by 305 publications

(113 citation statements)

References 44 publications

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“…It is shown that the NaBH 4 treatment not only gives rise to the lack of lattice nitrogen and simultaneous breaks the s‐triazine heterocycles on the surface of g‐C 3 N 4 , but also brings about the generation of −C≡N groups. Similar results were reported previously in other literature …”

Section: Resultssupporting

confidence: 93%

“…The PL intensity of BCN exhibits stronger than HDCN, which represents the higher electron‐hole recombination rate of BCN. Nevertheless, a strong fluorescence quenching phenomenon exists in HDCN, which indicates that the photogenerated carriers recombination is adequately inhibited through introducing the nitrogen vacancies and the −C≡N groups that act as strong electron‐withdrawing sites . As shown in Figure b, the photoluminescence decay kinetics of BCN and HDCN was also investigated by time‐resolved spectra.…”

Section: Resultsmentioning

confidence: 99%

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Enhanced Photocatalytic Hydrogen Evolution of the Hydrogenated Deficient g‐C₃N₄ via Surface Hydrotreating

et al. 2019

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Unreacted amino groups (−NHx) existed in the bulk g‐C3N4 always act as charge trap sites which resulting in low photocatalytic activity. In this paper, the hydrogenated deficient g‐C3N4 (HDCN) was prepared by calcining bulk g‐C3N4 with NaBH4 under an inert atmosphere. It was found that −NHx groups were absolutely reduced into both nitrogen vacancies and the cyano groups (−C≡N groups) in the frameworks of g‐C3N4 after this surface hydrotreating. Therefore, the photo‐induced carrier recombination is suppressed dues to the disappeared −NHx groups. As a result, the HDCN sample displayed a higher photocatalytic H2 evolution activity than the bulk g‐C3N4.

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Enhanced Photocatalytic Hydrogen Evolution of the Hydrogenated Deficient g‐C₃N₄ via Surface Hydrotreating

et al. 2019

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“…Additionally, the signal of H 2 was confirmed by gas chromatography, providing a strong evidence for the release of H 2 (for details see the Supporting Information). Furthermore, additional experiments using ammonium oxalate as hole scavenger [9b] or K 2 S 2 O 8 as electron scavenger [17] gave the product 3 a in lower yields, suggesting that both hole and electron played key roles in the photocatalytic process (for details see the Supporting Information). Based on the accumulated experimental evidences and previous literature reports, [18] a proposed mechanism for this photocatalytic transformation is outlined in Scheme 4.…”

Section: Communications Ascwiley-vchdementioning

confidence: 99%

Recyclable Perovskite as Heterogeneous Photocatalyst for Aminomethylation of Imidazo‐Fused Heterocycles

et al. 2020

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A sustainable and cost-effective protocol for direct aminomethylation of imidazo-fused heterocycles by decarboxylative coupling reaction of N-phenylglycines with imidazo-fused heterocycles in the presence of CsPbBr 3 under the irradiation of visible light has been developed. This is the first example of CsPbBr 3 -catalyzed aminomethylation of imidazo-fused heterocycles. The eminent advantage of this work is in that, CsPbBr 3 is easily prepared and can be used at least 5 times without obvious reduction in its activity, exhibiting high catalyst economic feature.

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“…In addition to the above photocatalysis application, ultrathin 2D materials also made great strides in other photocatalysis field, such as photocatalytic organic synthesis, photocatalytic singlet oxygen generation ( 1 O 2 ). For example, recently 2D graphitic g‐C 3 N 4 were used for synthesizing organic functional groups conversion reactions (photocatalytic ketalization reaction) and selective oxidation of aromatic alcohols . Xie and coworkers used BP and oxidized graphitic carbon nitride as photosensitizers for the generation of 1 O 2 that further heighten its possibility in selective organic synthesis, waste‐water treatment, and photodynamic therapy .…”

Section: Energy and Environment Applicationsmentioning

confidence: 99%

Ultrathin Two‐Dimensional Semiconductors for Photocatalysis in Energy and Environment Applications

Zhu

2019

ChemCatChem

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The search for highly active photocatalysts remains one of the most challenging tasks for realizing efficient solar energy utilization. Inspired by their unique and excellent physicochemical properties, ultrathin two-dimensional (2D) semiconductors present great advantages in photocatalytic researches. In this review, we summarize the state-of-art progress on the ultrathin 2D semiconductors with a particular emphasis on their recent advances in energy and environment applications. First, we introduce the historical developments of 2D nanomaterials, and outline their advantages in terms of photocatalysis. Second, the classifications of ultrathin 2D semiconductors are summarized based on their structure and compositions. Further, various energy and environment applications including water splitting, CO 2 reduction, N 2 fixation, organic syntheses, NO x removal, water treatment, and sterilization in recent years (mainly in the recent 3 years) are highlighted in detail. Finally, the personal perspectives on future challenges and outlooks in the field of energy and environment applications are featured.[a] Dr.

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Nitrogen vacancy engineered graphitic C3N4-based polymers for photocatalytic oxidation of aromatic alcohols to aldehydes

Cited by 305 publications

References 44 publications

Enhanced Photocatalytic Hydrogen Evolution of the Hydrogenated Deficient g‐C₃N₄ via Surface Hydrotreating

Enhanced Photocatalytic Hydrogen Evolution of the Hydrogenated Deficient g‐C₃N₄ via Surface Hydrotreating

Recyclable Perovskite as Heterogeneous Photocatalyst for Aminomethylation of Imidazo‐Fused Heterocycles

Ultrathin Two‐Dimensional Semiconductors for Photocatalysis in Energy and Environment Applications

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Nitrogen vacancy engineered graphitic C3N4-based polymers for photocatalytic oxidation of aromatic alcohols to aldehydes

Cited by 305 publications

References 44 publications

Enhanced Photocatalytic Hydrogen Evolution of the Hydrogenated Deficient g‐C3N4 via Surface Hydrotreating

Enhanced Photocatalytic Hydrogen Evolution of the Hydrogenated Deficient g‐C3N4 via Surface Hydrotreating

Recyclable Perovskite as Heterogeneous Photocatalyst for Aminomethylation of Imidazo‐Fused Heterocycles

Ultrathin Two‐Dimensional Semiconductors for Photocatalysis in Energy and Environment Applications

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Product

Resources

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Enhanced Photocatalytic Hydrogen Evolution of the Hydrogenated Deficient g‐C₃N₄ via Surface Hydrotreating

Enhanced Photocatalytic Hydrogen Evolution of the Hydrogenated Deficient g‐C₃N₄ via Surface Hydrotreating