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Adsorption of 4-n-Nonylphenol and Bisphenol-A on Magnetic Reduced Graphene Oxides: A Combined Experimental and Theoretical Studies
Abstract
Adsorption of 4-n-nonylphenol (4-n-NP) and bisphenol A (BPA) on magnetic reduced graphene oxides (rGOs) as a function of contact time, pH, ionic strength and humic acid were investigated by batch techniques. Adsorption of 4-n-NP and BPA were independent of pH at 3.0- 8.0, whereas the slightly decreased adsorption was observed at pH 8.0-11.0. Adsorption kinetics and isotherms of 4-n-NP and BPA on magnetic rGOs can be satisfactorily fitted by pseudo-second-order kinetic and Freundlich model, respectively. The maximum adsorption capacities of magnetic rGOs at pH 6.5 and 293 K were 63.96 and 48.74 mg/g for 4-n-NP and BPA, respectively, which were significantly higher than that of activated carbon. Based on theoretical calculations, the higher adsorption energy of rGOs + 4-n-NP was mainly due to π-π stacking and flexible long alkyl chain of 4-n-NP, whereas adsorption of BPA on rGOs was energetically favored by a lying-down configuration due to π-π stacking and dispersion forces, which was further demonstrated by FTIR analysis. These findings indicate that magnetic rGOs is a promising adsorbent for the efficient elimination of 4-n-NP/BPA from aqueous solutions due to its excellent adsorption performance and simple magnetic separation, which are of great significance for the remediation of endocrine-disrupting chemicals in environmental cleanup.
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Cites
Density-functional thermochemistry. III. The role of exact exchange
Becke, A. D. (1993) · The Journal of Chemical Physics · doi:10.1063/1.464913 · Cited by 103,767
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Langmuir, I. (1918) · Journal of the American Chemical Society · doi:10.1021/ja02242a004 · Cited by 23,242
Cited by
Zhu, 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
Removal of emerging contaminants from the environment by adsorption
Sophia A., C., & Lima, E. C. (2018) · Ecotoxicology and Environmental Safety · doi:10.1016/j.ecoenv.2017.12.026 · Cited by 913
Su, C. (2017) · Journal of Hazardous Materials · doi:10.1016/j.jhazmat.2016.06.060 · Cited by 365
Zou, Y., Wang, X., Ai, Y., Liu, Y., Li, J., Ji, Y., & Wang, X. (2016) · Environmental Science & Technology · doi:10.1021/acs.est.6b00255 · Cited by 319
Self-citationZhong, D., Zhang, Y., Wang, L., Chen, J., Jiang, Y., Tsang, D. C. W., Zhao, Z., Ren, S., Liu, Z., & Crittenden, J. C. (2018) · Environmental Pollution · doi:10.1016/j.envpol.2018.08.093 · Cited by 214
Metadata
- Authors
- Jin, Z., Wang, X., Sun, Y., Ai, Y., & Wang, X.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-07-21
- Volume
- 49
- Issue
- 15
- Pages
- 9168-9175
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2288616264
- Cited by
- 477
- References
- 2
- FWCI
- 53.80
- Type
- journal article
- Language
- en
- Open access
- closed
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- Jin, Z., Wang, X., Sun, Y., Ai, Y., & Wang, X. (2015). Adsorption of 4-n-Nonylphenol and Bisphenol-A on Magnetic Reduced Graphene Oxides: A Combined Experimental and Theoretical Studies. Environmental Science & Technology. https://doi.org/10.1021/acs.est.5b02022
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