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Supporting information
Carbon microspheres prepared from the hemicelluloses-rich
pre-hydrolysis liquor for contaminant removal
Yuanyuan Wanga, Xuefei Caoa,*, Shaoni Suna, Ruochen Zhanga, Quentin Shic, Lu
Zhengc, Runcang Suna,b,*
a Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University,
Beijing, 100083, China
b Center for Lignocellulose Science and Engineering, and Liaoning Key Laboratory
Pulp and Paper Engineering,Dalian Polytechnic University , Dalian , China.
c Jining Mingsheng New Materials Co., Ltd., Xinglong Industrial Park, Yanzhou
District, Jining City, Shandong Province, 272101, China
*Authors to whom correspondence should be addressed.
E-mail: [email protected] (Runcang Sun)
Tel.: +86-010-62336903; Fax: +86-010-62336903.
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Table S1. The carbon microspheres yields obtained from hydrothermal carbonization
of xylose in the presence of different concentrations of H2SO4 at 180 oC for 12 h.
Concentration (wt.%) 0 0.1 0.5 1.0 2.0
Yield (%) 13.1 35.6 39.4 40.3 43.8
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Table S2. The carbon microspheres yields obtained from the hydrothermal
carbonization of xylose and different lignin model compounds at 180 oC for 12 h.
Feedstock Lignin model compounds Yield (%)
Xylose — 13.1
Xylose Guaiacol 18.6
Xylose 2,6-dimethoxy phenol 16.7
Xylose Guaiacylglycerol-β-guaiacol ether 18.8
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Table S3. The Pb(II) and MB adsorption capacities of carbon microspheres obtained
from the literatures.
Adsorbent PollutantsAdsorption
capacity (mg/g) References
Porous Fe3O4@C
nanocapsulesPb(II) 79.0 (Cheng et al., 2012)
Layered Double
Hydroxides/Hollow
Carbon Microsphere
Pb(II) 205.7 (Huang et al., 2017)
Carbon
microspheres Pb(II) 273.4 This work
Carbonaceous
spheres from
glucose
MB 15.7 (Li et al., 2017)
Magnetic carbon
nanospheres MB 45.15 (Shao et al., 2015)
CAS/OH-APAM MB 348.06 (Zhang et al., 2018)
Carbon
microspheres MB 701.3 This work
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Fig. S1. The carbon microspheres yields obtained from the hydrothermal
carbonization of the PHL in the presence of 2% H2SO4 at 180 oC for different reaction
times.
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Fig. S2. SEM images of the carbon microspheres derived from (a) xylose + 0.1%
H2SO4 (× 3000), (b) xylose + 0.5% H2SO4 (× 3000), (c) xylose + 1% H2SO4 (× 3000),
(d) xylose + 2% H2SO4 (× 3000), and (e) xylose (× 10000) at 180 oC for 12 h.
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Fig. S3. FTIR spectra of the carbon microspheres obtained from (a) PHL + 2%
H2SO4, (b) PHL + 2% H2SO4 + acrylic acid at 180 oC for 12 h.
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Fig. S4. The zeta potentials of the carbon microspheres from the PHL in the presence
of 2% sulfuric acid with (a) and without (b) the addition of acrylic acid.
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Fig. S5. Adsorption behaviors of Pb(II) ion and MB on the ACMPHL+H2SO4+Acrylic acid. The
fitting results of Langmuir and Freundlich isotherm models for Pb(II) ion (a) and MB
(b); the fitting results for the pseudo-first-order and pseudo-second-order kinetic
models of Pb(II) ion (c) and MB (d).
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Fig. S6. The calibration equations for Pb(II) ion (a) and MB (b).
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ReferencesCheng, K., Zhou, Y. M., Sun, Z. Y., Hu, H. B., Zhong, H., Kong, X. K., & Chen, Q.
W. (2012). Synthesis of carbon-coated, porous and water-dispersive Fe3O4
nanocapsules and their excellent performance for heavy metal removal
applications. Dalton Transactions, 41(19), 5854.
Huang, S., Song, S., Zhang, R., Wen, T., Wang, X., Yu, S., & Wang, X. (2017).
Construction of layered double hydroxides/hollow carbon microsphere
composites and its applications for mutual removal of Pb(II) and humic acid
from aqueous solutions. ACS Sustainable Chemistry & Engineering, 5(12),
11268-11279.
Li, S., Liang, F., Wang, J., Zhang, H., & Zhang, S. (2017). Preparation of mono-
dispersed carbonaceous spheres via a hydrothermal process. Advanced Powder
Technology, 28(10), 2648-2657.
Shao, Y., Zhou, L., Bao, C., & Ma, J. (2015). A facile approach to the fabrication of
rattle-type magnetic carbon nanospheres for removal of methylene blue in
water. Carbon, 89, 378-391.
Zhang, Z., Wu, G., Xu, Z., Wu, S., & Gu, L. (2018). Adsorption of Methyl Blue onto
uniform carbonaceous spheres prepared via an anionic polyacrylamide-
assisted hydrothermal route. Materials Chemistry and Physics, 208, 8-18.
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