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author:

Wang, Chong (Wang, Chong.) [1] | Hou, Yuchen (Hou, Yuchen.) [2] | Cheng, Jiajia (Cheng, Jiajia.) [3] | Lin, Mei-Jin (Lin, Mei-Jin.) [4] | Wang, Xinchen (Wang, Xinchen.) [5]

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EI

Abstract:

Oxidation, especially selective oxidation by a heterogeneous catalyst with molecular oxygen, is a core technology for the conversion of petrochemical feedstock to commodity chemicals and pharmaceuticals. Existing catalytic approaches for efficient aerobic oxidation normally rely on the engagement of organometallic centers or transition-metal nanoparticles. In light of the necessity to develop sustainable production methodologies, multiple approaches for the metal-free polymeric carbon nitride (PCN) photocatalytic selective oxidation have been evaluated. However, the insufficient visible light optical absorption, poor charge-carriers separation and the weak driving force towards oxidation reaction impart a serious restriction on the eciency and selectivity of the organic photosynthesis, especially under extended wavelength solar light irradiation. Here, we report a surface engineering photochemical modification method to fabricate a donor-acceptor (D-A) functional carbon nitride photocatalyst (ECN) under ambient conditions. The well-developed D-A structure, preserved high crystallinity and enlarged π-conjugation framework of the hybrid semiconductor-molecule ECN samples favor the improvement of the optical absorption, as well as the enhanced separation and migration of the photo-generated charge carriers. As a result, the obtained ECN photocatalysts exhibited remarkable enhancement in the photocatalytic aerobic oxidation of alcohols, even under an extended light wavelength of 620 nm red-light irradiation. The photocatalytic aerobic sulfides and sp3 C–H oxidation reactions were also considerably accelerated over ECN and may serve as a direct approach for the construction of value-added sulfoxide and ketone products. © 2021 Elsevier B.V.

Keyword:

Biomimetics Carbon nitride Catalytic oxidation Crystallinity Image enhancement Irradiation Ketones Light Light absorption Metal nanoparticles Molecular oxygen Organometallics Photocatalytic activity Sulfur compounds Transition metals

Community:

  • [ 1 ] [Wang, Chong]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350116, China
  • [ 2 ] [Hou, Yuchen]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350116, China
  • [ 3 ] [Cheng, Jiajia]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350116, China
  • [ 4 ] [Lin, Mei-Jin]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350116, China
  • [ 5 ] [Wang, Xinchen]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350116, China

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Source :

Applied Catalysis B: Environmental

ISSN: 0926-3373

Year: 2021

Volume: 294

2 4 . 3 1 9

JCR@2021

2 0 . 3 0 0

JCR@2023

ESI HC Threshold:117

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 25

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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