Influence of non-metal dopants (O, S, N) and dimension of carbon nano materials on the fluorescence and photocatalytic degradation of organic pollutants
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Title |
Influence of non-metal dopants (O, S, N) and dimension of carbon nano materials on the fluorescence and photocatalytic degradation of organic pollutants
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Creator |
R, Usha
R, Fairlin Jenitha S, Sudhaparimala |
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Subject |
Adsorption
Catalyst Chlorophenols Organic dyes Fluorescence Graphene Graphene oxide Hydrothermal Nitrogen doped Carbon quantum dots Nitrogen doped graphene oxide Sulphur doped graphene oxide |
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Description |
485-494
The usage of sanitizers and disinfectants results in the dumping of toxic organic residues in water. There is a global need for effective agents which can adsorb and degrade hazardous chemicals effectively and convert into much safer constituents. In this study, the influence of non-metal dopants (O, S, N) and dimensionality on the catalytic ability of carbon nanomaterials (CNs) such as 0-D (Nitrogen-doped Carbon quantum dots (N-CQDs) synthesized from the seed kernel of Caesalpinia bonducella) and 2-D (Graphene oxide (GO), Sulphur doped graphene oxide (S-GO), Nitrogen-doped graphene oxide (N-GO) synthesized from glucose) have been compared and correlated. The microstructure, surface morphology, elemental composition, fluorescence emission and catalytic ability of the 0-D and 2-D materials are determined and compared. The defect density and the sub defect band gap states influenced by different electronegative non-metal dopants and the dimensions are discussed. The Micro strain increases with increases in dimension. The percentage of Nitrogen as dopant in N-GO is relatively less compared with N-CQDs which led to less fluorescence intensity observed in N-GO. On comparison of the results, it is evident that greater electro negativity of the dopants and reduction in dimension will increase the photo catalytic activity. Also, in comparison with 2-D structures, the large surface area and greater quantum confinement of 0-D structure enhance the degradation of organic pollutants. This observation is well correlated with PL emission intensities of the compared CNs. The results provide a better correlation between dimensionality and functionality of CNs and their impact on catalytic (adsorption and photo) applications in experimentally possible ways. |
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Date |
2022-08-31T08:19:05Z
2022-08-31T08:19:05Z 2022-09 |
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Type |
Article
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Identifier |
0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/60434 https://doi.org/10.56042/ijct.v29i5.61639 |
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Language |
en
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Publisher |
NIScPR-CSIR, India
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Source |
IJCT Vol.29(5) [September 2022]
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