Electronic Supporting Information

Iron Encapsulated in 3D N-Doped Carbon Nanotube/Porous Carbon

Hybrid from Waste Biomass for Enhanced Oxidative Activity

Yunjin Yao a,b,*, Jie Zhang a, Guodong Wu a , Shaobin Wang c,*,Yi Hu a, Cong Su a, Tongwen Xu b*

a Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of

Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei 230009,

China

b CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for

Energy Materials, School of Chemistry and Material Science, University of Science and Technology of

China, Hefei 230026, P. R. China

c Department of Chemical Engineering, Curtin University, G.P.O. Box U1987, Perth, Western Australia

6845, Australia

AUTHOR INFORMATION

* To whom correspondence should be addressed:

Name: Yunjin Yao; Phone: +86 551 62901548; Fax: +86 551 62901450; E-mail:yaoyunjin@gmail.com.

Name: Shaobin Wang; Phone: +61 8 9266 3776; Fax: +61 8 9266 2681; E-mail:

shaobin.wang@curtin.edu.au.

Name: Tongwen Xu; Phone: + 86 551 3601587; Fax: +86-551-63602171; E-mail: twxu@ustc.edu.cn.

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Figure S1. Photographs (a), TGA (b), and XRD (c) of biomass.

(b)

(a)

(c)

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Figure S2. EDS spectrum of 2%-Fe@N-C 3D structure.

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Figure S3. Nitrogen adsorption-desorption isotherms of the as-prepared samples.

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Figure S4. TGA curves of different catalysts.

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Figure S5. UV−visible spectra of Orange II at different reaction time in 2%-Fe@N-C/PMS. Inset: the

photograph of the corresponding color change during different reaction times. Unless otherwise stated,

the reaction conditions are: [Orange II] = 20 mg/L, [catalyst] = 40 mg/L, [PMS] =40 mg/L, T =25 °C,

without pH adjustment.

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Figure S6. XRD patterns of 2%-Fe@N-C catalysts before and after reaction.

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Figure S7. Inhibition effect of radical scavengers with different concentrations on Orange II degradation

in 2%-Fe@N-C/PMS process. Unless otherwise stated, the reaction conditions are: [Orange II] = 20

mg/L, [catalyst] = 40 mg/L, [PMS] =40 mg/L, T =25 °C, without pH adjustment.

(a) (b)

(c) (d)

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