The Spatially Oriented Charge Flow and Photocatalysis Mechanism on Internal van der Waals Heterostructures Enhanced g-C3N4

By Jieyuan Li, Zhiyong Zhang, Wenquan Cui, Hong Wang, Wanglai Cen, Grayson Johnson, Guangming Jiang, Sen Zhang, F. Dong. ACS Catalysis, 2018

233 citations recorded by the source corpus.

Undirected charge transfer and inhibited interlayer electron migration largely limit the photocatalytic efficiency of two-dimensional (2D) layered graphitic carbon nitride (g-C3N4). Herein, we present a facile chemical approach to forming internal van der Waals heterostructures (IVDWHs) within g-C3N4, which enhance the interlayer coulomb interaction and facilitate the spatially oriented charge separation. Such a structure, generated through simultaneous g-C3N4 intralayer modification by O and interlayer intercalation by K, enables the oriented charge flow between the layers, enhancing the accumulation of the localized electrons and promoting the production of active radicals for the activation of reactants as suggested by density functional theory calculations. The resultant O, K-functionalized g-C3N4 with IVDWHs shows an enhanced photocatalytic activity, with nearly 100% enhancement of NO purification efficiency compared with pristine g-C3N4. The reaction mechanism for NO purification is also provided, i...

Subfields: Electrical and Electronic Engineering, Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/39ddfe76d6da9010ab51110af0662cbc1ac37674

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In Electrical and Electronic Engineering

1. P. Raizada
2. Pardeep Singh
3. Anita Sudhaik

In Materials Chemistry

1. P. Raizada
2. Pardeep Singh
3. V. Thakur
4. V. Hasija
5. Anita Sudhaik
6. Abhinandan Kumar
7. K. Sharma
8. Ahmad Hosseini-Bandegharaei

In Renewable Energy, Sustainability and the Environment

1. P. Raizada
2. Pardeep Singh
3. V. Thakur
4. V. Hasija
5. Anita Sudhaik
6. K. Sharma
7. Abhinandan Kumar
8. Sreekanth B. Jonnalagadda

Citations in the corpus

• Recent advances in noble metal free doped graphitic carbon nitride based nanohybrids for photocatalysis of organic contaminants in water: A review (2019, background): “In another study it was observed that more side-products (NO2 - ,NO3 ) are released over O/K intercalated g-C3N4 as compared to bare g-C3N4 to impede the toxic NO2 accumulation [185].”