The DOI matches its Crossref record; 6 of the 6 references it cites were found in a registry or an index.
Nitrogen-Doped Graphene for Generation and Evolution of Reactive Radicals by Metal-Free Catalysis
Abstract
N-Doped graphene (NG) nanomaterials were synthesized by directly annealing graphene oxide (GO) with a novel nitrogen precursor of melamine. A high N-doping level, 8-11 at. %, was achieved at a moderate temperature. The sample of NG-700, obtained at a calcination temperature of 700 °C, showed the highest efficiency in degradation of phenol solutions by metal-free catalytic activation of peroxymonosulfate (PMS). The catalytic activity of the N-doped rGO (NG-700) was about 80 times higher than that of undoped rGO in phenol degradation. Moreover, the activity of NG-700 was 18.5 times higher than that of the most popular metal-based catalyst of nanocrystalline Co3O4 in PMS activation. Theoretical calculations using spin-unrestricted density functional theory (DFT) were carried out to probe the active sites for PMS activation on N-doped graphene. In addition, experimental detection of generated radicals using electron paramagnetic resonance (EPR) and competitive radical reactions was performed to reveal the PMS activation processes and pathways of phenol degradation on nanocarbons. It was observed that both (•)OH and SO4(•-) existed in the oxidation processes and played critical roles for phenol oxidation.
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Cites
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High oxygen-reduction activity and durability of nitrogen-doped graphene
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Doped graphene for metal-free catalysis
Kong, X.-K., Chen, C.-L., & Chen, Q.-W. (2014) · Chem. Soc. Rev. · doi:10.1039/c3cs60401b · Cited by 783
Reduced Graphene Oxide for Catalytic Oxidation of Aqueous Organic Pollutants
Sun, H., Liu, S., Zhou, G., Ang, H. M., Tadé, M. O., & Wang, S. (2012) · ACS Applied Materials & Interfaces · doi:10.1021/am301372d · Cited by 722
Self-citationSun, H., Kwan, C., Suvorova, A., Ang, H. M., Tadé, M. O., & Wang, S. (2014) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2014.02.012 · Cited by 509
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Cited by
Metal-Free Carbocatalysis in Advanced Oxidation Reactions
Duan, X., Sun, H., & Wang, S. (2018) · Accounts of Chemical Research · doi:10.1021/acs.accounts.7b00535 · Cited by 1,329
Self-citationZhu, S., Huang, X., Ma, F., Wang, L., Duan, X., & Wang, S. (2018) · Environmental Science & Technology · doi:10.1021/acs.est.8b01817 · Cited by 1,179
Self-citationInsights into Heterogeneous Catalysis of Persulfate Activation on Dimensional-Structured Nanocarbons
Duan, X., Sun, H., Kang, J., Wang, Y., Indrawirawan, S., & Wang, S. (2015) · ACS Catalysis · doi:10.1021/acscatal.5b00774 · Cited by 799
Self-citationLian, F., & Xing, B. (2017) · Environmental Science & Technology · doi:10.1021/acs.est.7b02528 · Cited by 641
Zhao, C., Shao, B., Yan, M., Liu, Z., Liang, Q., He, Q., Wu, T., Liu, Y., Pan, Y., Huang, J., et al. (2021) · Chemical Engineering Journal · doi:10.1016/j.cej.2021.128829 · Cited by 518
Metadata
- Authors
- Duan, X., Ao, Z., Sun, H., Indrawirawan, S., Wang, Y., Kang, J., Liang, F., Zhu, Z. H., & Wang, S.
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-02-09
- Volume
- 7
- Issue
- 7
- Pages
- 4169-4178
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W1996906301
- Cited by
- 780
- References
- 6
- FWCI
- 38.06
- Type
- journal article
- Language
- en
- Open access
- closed
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