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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)
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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MDPI and ACS Style

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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