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Wuyou Wang

Bio: Wuyou Wang is an academic researcher. The author has contributed to research in topics: Graphitic carbon nitride & Crystallinity. The author has an hindex of 1, co-authored 1 publications receiving 5 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, a facile construction methodology was demonstrated to afford g-C3N4 with abundant N vacancies, high crystallinity, a hydrophilic surface structure, a small particle size, and an increased surface area under neat and mild conditions.
Abstract: Graphitic carbon nitride (g-C3N4) possesses fascinating merits, but its practical applications are limited by the inferior properties of limited visible-light sorption, rapid recombination of photo-excited charge carriers and low electrical conductivity. Introduction of N-defects is an efficient approach to tune its optical properties, but strategies capable of creating abundant vacancies and simultaneously maintaining the highly crystalline architecture are still limited and highly desired. In this work, a facile construction methodology was demonstrated to afford g-C3N4 with abundant N vacancies, high crystallinity, a hydrophilic surface structure, a small particle size, and an increased surface area under neat and mild conditions. The essence of our approach lies in the treatment of the bulk g-C3N4 precursor with an alkaline salt (LiN(SiMe3)2) with a low melting point, moderate nucleophilicity, and easy removal procedures. The unique structural properties of the afforded ND-g-C3N4 allow for a significantly redshifted absorption edge and enhanced charge carrier separation, leading to superior photocatalytic hydrogen evolution performance three times that obtained by pristine g-C3N4. The modification strategy developed herein sheds light on the fabrication of g-C3N4-based materials with improved photocatalytic efficiency via efficient introduction of N defects, variation of the surface structure, and retention of the high crystallinity.

17 citations


Cited by
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Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper developed a defect engineering strategy to construct N-deficient ordered mesoporous graphitic carbon nitride coupled with AgPd nanoparticles, and the as-prepared Ag0.1Pd0.9/N-ompg-C3N4 catalyst exhibits remarkable activity with the Turnover frequency (TOF) value of 1588.2h−1 and robust stability with only a slight decrease in activity after ten cycles.

43 citations

Journal ArticleDOI
Dang-guo Cheng1
TL;DR: Wang et al. as mentioned in this paper developed a defect engineering strategy to construct N-deficient ordered mesoporous graphitic carbon nitride coupled with AgPd nanoparticles, and the as-prepared Ag0.1Pd0.9/N-ompg-C3N4 catalyst exhibits remarkable activity with the Turnover frequency (TOF) value of 1588.2 h−1 and robust stability with only a slight decrease in activity after ten cycles.

42 citations

Journal ArticleDOI
TL;DR: In this paper, a new supramolecular assembly family as reactants was designed to synthesize highly photoactive porous polymeric carbon nitride (CN), based on a melem-constructed honeycomb, coupled with the insertion of small triazine analogs.
Abstract: We design a new supramolecular assembly family as reactants to synthesize highly-photoactive porous polymeric carbon nitride (CN), based on a melem-constructed honeycomb, coupled with the insertion of small triazine analogs. The inclusion of small molecules into the melem-based hexameric rings leads to a highly porous CN with controlled electronic, optical, and catalytic properties, as proven by experimental and theoretical studies. The best-performing photocatalyst demonstrates state-of-the-art activity for hydrogen evolution reaction (HER, H2 generation rate of 8075 μmol h−1 g−1), and CO2 reduction (CO2RR, CO production of 1125 μmol g−1 within 3 h) with high quantum yield efficiencies and excellent stability, owing to the enhanced charge separation and light absorption, appropriate energy bands position, and high specific surface area.

15 citations

Journal ArticleDOI
TL;DR: In this paper , facial thermal polymerization of melamine-cyanuric acid supramolecular precursors under H2 flow was used to synthesize defective g-C3N4 (BCN) microrods with an increased specific surface area.

14 citations

Journal ArticleDOI
TL;DR: In this paper, a metal-free photocatalyst is constructed by anchoring the ultrasmall SiC nanocrystals on carbon nitride (CN) nanosheets for efficient and durable hydrogen generation.
Abstract: Photocatalytic hydrogen evolution from water is a promising approach for renewable energy generation and storage. However, traditional photocatalysts suffer from limited hydrogen evolution rates due to the lack of active sites. In this work, we demonstrate that a plenty of active sites can be provided by the surface autocatalytic effect and quantum confinement of ultrasmall SiC nanocrystals (NCs). A metal-free photocatalyst is constructed by anchoring the ultrasmall SiC NCs on carbon nitride (CN) nanosheets for efficient and durable hydrogen generation. Moreover, the optical absorption in the visible range and the separation of electrons and holes are significantly improved by the heterojunction band alignment. As a consequence, the CN/SiC NC composite exhibits a high hydrogen evolution rate up to 1889 μmol g−1 h−1 under visible light irradiation with an apparent quantum yield (AQY) of 9.8% at 420 nm. And the photocatalyst shows high stability in the cyclic test. This work provides a new strategy to develop highly efficient photocatalysts for hydrogen generation via the surface autocatalytic effect and quantum confinement.

9 citations