β-Cyclodextrin modified graphitic carbon nitride for the removal of pollutants from aqueous solution: experimental and theoretical calculation study

TLDR: In this article, a β-cyclodextrin modified, multifunctional, layer-by-layer graphitic carbon nitride (g-C3N4/β-CD) was successfully synthesized and applied as an effective adsorbent for the removal of methyl orange (MO) and Pb(II) from aqueous solutions under various environmental conditions (e.g., solution pH, solid content, contact time and temperature).

Abstract: A novel β-cyclodextrin modified, multifunctional, layer-by-layer graphitic carbon nitride (g-C3N4/β-CD) was successfully synthesized and applied as an effective adsorbent for the removal of methyl orange (MO) and Pb(II) from aqueous solutions under various environmental conditions (e.g., solution pH, solid content, contact time and temperature). The kinetic results indicated that the adsorption was dominated by chemisorption, and the higher adsorption capacity of g-C3N4/β-CD was attributed to it having more oxygen-containing functional groups than g-C3N4. The Langmuir, Freundlich and Sips models were applied to simulate the adsorption isotherms of MO and Pb(II), and the results demonstrated that the adsorption of MO was attributed to multilayer adsorption, while the coverage adsorption of Pb(II) on the g-C3N4/β-CD was monolayer adsorption. The thermodynamic parameters showed that the adsorption of both MO and Pb(II) was spontaneous and endothermic. The DFT calculations further evidenced the surface complexation and electrostatic interaction of Pb(II) on the g-C3N4 and g-C3N4/β-CD, whereas, the interaction of MO with g-C3N4 and g-C3N4/β-CD was mainly attributed to hydrogen bonds and strong π–π interactions. The results demonstrated that g-C3N4/β-CD is a promising material for the efficient removal of organic and inorganic pollutants in environmental pollution remediation.

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Correction: b-Cyclodextrin modified graphitic
carbon nitride for the removal of pollutants from
aqueous solution: experimental and theoretical
calculation study
Yidong Zou,
ab
Xiangxue Wang,
ac
Yuejie Ai,
*
a
Yunhai Liu,
b
Yongfei Ji,
d
Hongqing Wang,
e
Tasawar Hayat,
f
Ahmed Alsaedi,
f
Wenping Hu
*
g
and Xiangke Wang
*
ade
Correction for ‘b-Cyclodextrin modified graphitic carbon nitride for the removal of pollutants from aqueous
solution: experimental and theoretical calculation study’ by Yidong Zou et al., J. Mater. Chem. A, 2016, 4,
14170–14179.
The authors regret an error in Fig. 2 in the published article; a SEM image was misused in Fig. 2c in the published article due to
a replication error in the PPT soware. The authors conrm that this error does not have any impact on the conclusions of the
original article. A corrected version of Fig. 2 is provided below:
a
School of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, P. R. China. E-mail: xkwang@ipp.ac.cn; xkwang@ncepu.edu.cn;
aiyuejie314@126.com; Fax: +86-10-61772890; Tel: +86-10-61772890
b
School of Chemistry, Biological and Materials Sciences, East China Institute of Technology, Nanchang, 330013, P. R. China
c
Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institu tions, School for Radiological and Interdisciplinary Sciences, Soochow University,
215123, Suzhou, P. R. China
d
Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, Roslagstullsbacken 15, 10691 Stockholm, Sweden
e
School of Chemistry and Chemical Engineering, University of South China, 28 Changsheng West Road, Hengyang, Hunan 421001, P. R. China
f
NAAM Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
g
Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China. E-mail: huwp@iccas.ac.cn
Cite this: J. Mater. Chem. A,2019,7,
11539
DOI: 10.1039/c9ta90107h
www.rsc.org/MaterialsA
This journal is © The Royal Society of Chemistry 2019 J. Mater. Chem. A,2019,7, 11539–11540 | 11539
Journal of
Materials Chemistry A
CORRECTION
Open Access Article. Published on 29 April 2019. Downloaded on 8/26/2022 3:48:52 AM.
This article is licensed under a
Creative Commons Attribution 3.0 Unported Licence.
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The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.
Fig. 2 Characterization of as-prepared g-C
3
N
4
and g-C
3
N
4
/b-CD samples: SEM images of g-C
3
N
4
(a and b) and g-C
3
N
4
/b-CD (c and d); TEM
images of g-C
3
N
4
(e) and g-C
3
N
4
/b-CD (f).
11540
| J. Mater. Chem. A,2019,7, 11539–11540 This journal is © The Royal Society of Chemistry 2019
Journal of Materials Chemistry A Correction
Open Access Article. Published on 29 April 2019. Downloaded on 8/26/2022 3:48:52 AM.
This article is licensed under a
Creative Commons Attribution 3.0 Unported Licence.
View Article Online