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Open AccessArticle

Synthesis of Hierarchical Porous Carbon in Molten Salt and Its Application for Dye Adsorption

1
The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
2
College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(8), 1098; https://doi.org/10.3390/nano9081098
Received: 12 July 2019 / Revised: 29 July 2019 / Accepted: 29 July 2019 / Published: 31 July 2019
(This article belongs to the Special Issue Nanomaterials and Nanotechnology in Wastewater Treatment)
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Abstract

Hierarchical porous carbon was successfully synthesized from glucose in a molten salt at 800 °C for 2 h. It was amorphous and contained numerous oxygen containing functional groups on its surface. The porous carbon with 1.0 wt% Fe(NO3)3·9H2O oxidizing agent showed the highest specific surface area of 1078 m2/g, and the largest pore volume of 0.636 cm3/g, among all of the samples. Raman and TEM results revealed that it had more defects and pores than other as-prepared carbon materials. The adsorption capacities of as-prepared porous carbon for methylene blue (MB) and methyl orange (MO) were 506.8 mg/g and 683.8 mg/g, respectively. The adsorption isotherms fit the Langmuir model and the adsorption kinetics followed the pseudo-second-order kinetic model. View Full-Text
Keywords: hierarchically porous carbon; molten salt method; Fe(NO3)3·9H2O; dye adsorption hierarchically porous carbon; molten salt method; Fe(NO3)3·9H2O; dye adsorption
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Li, S.; Zhang, H.; Hu, S.; Liu, J.; Zhu, Q.; Zhang, S. Synthesis of Hierarchical Porous Carbon in Molten Salt and Its Application for Dye Adsorption. Nanomaterials 2019, 9, 1098.

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