Open Access Article
This Open Access Article is licensed under a
Creative Commons Attribution 3.0 Unported Licence

Correction: Cr(VI) removal by magnetic carbon nanocomposites derived from cellulose at different carbonization temperatures

Bin Qiuabc, Yiran Wangb, Dezhi Sun*a, Qiang Wanga, Xin Zhangd, Brandon L. Weeksd, Ryan O’Connore, Xiaohua Huange, Suying Wei*c and Zhanhu Guo*b
aCollege of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China. E-mail: sundezhi@bjfu.edu.cn
bIntegrated Composites Laboratory (ICL), Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA. E-mail: zguo10@utk.edu
cDepartment of Chemistry and Biochemistry, Lamar University, Beaumont, TX 77710, USA. E-mail: suying.wei@lamar.edu
dDepartment of Chemical Engineering, Texas Technology University, Lubbock, TX 79409, USA
eDepartment of Chemistry, The University of Memphis, Memphis, TN 38152, USA

Received 3rd June 2020 , Accepted 3rd June 2020

First published on 25th June 2020


Correction for ‘Cr(VI) removal by magnetic carbon nanocomposites derived from cellulose at different carbonization temperatures’ by Bin Qiu et al., J. Mater. Chem. A, 2015, 3, 9817–9825, DOI: 10.1039/C5TA01227A.


Parts of the data presented in Fig. 2 and 3 are incorrect. The authors have repeated the experiments to provide replacement data for Fig. 2(B) and (C), Fig. 3(B) and (C). The new XRD patterns of the samples were measured in Prof. Luyi Sun’s Lab at University of Connecticut, and the new Raman spectra were measured in Prof. Xiaohua Huang’s Lab at The University of Memphis, USA. This correction does not alter the conclusions presented in this Journal of Materials Chemistry A paper.

(1) The corrected Fig. 2(B) and (C) are shown as following.


image file: d0ta90125c-f1.tif
Fig. 2 XRD patterns of magnetic carbons synthesized (B) at heating rates of (a) 2 and (b) 5 °C min−1 (final temperature: 800 °C); and (C) with a retention time of (a) 30 and (b) 60 min (heating rate: 10 °C min−1, final temperature: 800 °C).

(2) The corrected Fig. 3(B) and (C) are shown as following.


image file: d0ta90125c-f2.tif
Fig. 3 Raman spectra of magnetic carbons synthesized (B) at heating rates of (a) 2 and (b) 5 °C min−1 (final temperature: 800 °C); and (C) with a retention time of (a) 30 and (b) 60 min (heating rate: 10 °C min−1, final temperature: 800 °C).

The sentence at page 9818 “2.0 g of cellulose was then mixed with the Fe(NO3)3 solution” should be corrected as “20.0 g of cellulose was then mixed with the Fe(NO3)3 solution”.

The sentence at page 9820 “The ID/IG ratios of MC8–5 and MC8–2 are 1.15 and 1.10” should be corrected as “The ID/IG ratios of MC8–5 and MC8–2 are 1.00 and 1.21”.

The sentence at page 9820 “The D-band peak of both MC8–10–30 and MC8–10–60 is observed to be shifted to a lower wavenumber (1292 cm−1), while the G-band peak is shifted to a higher wavenumber (1577 cm−1)” should be corrected as “The D-band peak of both MC8–10–30 and MC8–10–60 is observed to be shifted to the lower wavenumbers, while the G-band peak is shifted to the higher wavenumbers”.

The sentence at page 9821 “The ID/IG of MC8–10–30 and MC8–10–60 are 1.33 and 1.38” should be corrected as “The ID/IG of MC8–10–30 and MC8–10–60 are 1.19 and 1.18”.

The authors appreciate the support from the readers, editors and publisher. Meanwhile, the authors apologize for this confusion caused by this mistake.

Acknowledgements

The authors thank Mr Qian Hu for re-synthesizing the samples (in ICL at UTK), Prof. Luyi Sun at University of Connecticut and Dr Raymond Edward Wilson Jr at The University of Memphis for their support on XRD and Raman measurement.

This journal is © The Royal Society of Chemistry 2020