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Anchoring of silver nanoparticles on graphitic carbon nitride sheets for the synergistic catalytic reduction of 4-nitrophenol.
- Source :
-
Chemosphere [Chemosphere] 2017 Apr; Vol. 172, pp. 147-154. Date of Electronic Publication: 2016 Dec 22. - Publication Year :
- 2017
-
Abstract
- In this paper, a facile process was developed for anchoring of silver nanoparticles on graphitic carbon nitride sheets (Ag/g-C <subscript>3</subscript> N <subscript>4</subscript> ) with high catalytic activity for reduction of 4-nitrophenol. The morphology and structure of the as-prepared Ag/g-C <subscript>3</subscript> N <subscript>4</subscript> composite were investigated by FESEM, TEM, XRD and XPS. The reaction mechanism and the reduction kinetics of 4-nitrophenol under different light irradiation were systematically studied. The results showed that the obtained Ag/g-C <subscript>3</subscript> N <subscript>4</subscript> composite exhibited a much higher electro/photo catalytic activity and stability for reduction of 4-nitrophenol. Significantly, due to the synergistic effect and interaction between highly dispersed Ag nanoparticles (Ag NPs, ∼7.2 nm) and lamellar g-C <subscript>3</subscript> N <subscript>4</subscript> , not only transfer of interfacial charge, but also the separation of photoinduced electrons occurred when the reaction was proceeded under light. In addition, the composite exhibited high stability and reusability during the cycling experiments. The results showed that the Ag/g-C <subscript>3</subscript> N <subscript>4</subscript> composite is an effective and stable electro/photo catalyst for reduction of 4-nitrophenol.<br /> (Copyright © 2016 Elsevier Ltd. All rights reserved.)
- Subjects :
- Catalysis
Electrodes
Light
Nitrophenols chemistry
Nitrophenols radiation effects
Oxidation-Reduction
Particle Size
Surface Properties
Water Pollutants, Chemical chemistry
Water Pollutants, Chemical radiation effects
Graphite chemistry
Metal Nanoparticles chemistry
Nitriles chemistry
Nitrophenols analysis
Silver chemistry
Water Pollutants, Chemical analysis
Water Purification methods
Subjects
Details
- Language :
- English
- ISSN :
- 1879-1298
- Volume :
- 172
- Database :
- MEDLINE
- Journal :
- Chemosphere
- Publication Type :
- Academic Journal
- Accession number :
- 28068566
- Full Text :
- https://doi.org/10.1016/j.chemosphere.2016.12.103