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Preparation of a Stable Nanoscale Manganese Residue-Derived [email protected] Carbon Composite for the Adsorption of Safranine T

School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
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Nanomaterials 2019, 9(6), 839; https://doi.org/10.3390/nano9060839
Received: 3 May 2019 / Revised: 21 May 2019 / Accepted: 25 May 2019 / Published: 1 June 2019
To develop a novel, low-cost adsorbent with natural material and industrial waste as raw materials, nanoscale manganese residue-derived [email protected] carbon (MR–[email protected]) composite was prepared by the carbonization of starch–manganese residue gel. Manganese residue-derived FeS (MR–FeS) and starch-derived carbon (SC) were also prepared as contrasts for comparative studies. The MR–[email protected] nanocomposite exhibited relatively large specific surface area and micropore volume, appropriate pore size, abundant functional groups, strong interaction between the functional groups of SC and MR–FeS, and the immobilization and uniform distribution of MR–FeS nanoparticles onto SC support material, which contributed to better adsorption properties for the removal of Safranine T (ST) from the aqueous solution compared with those of MR–FeS and SC. The adsorption could be conducted at a wide range of pH and temperature to achieve a satisfy removal efficiency of ST with MR–[email protected] nanocomposite as adsorbent. The adsorption kinetics well followed the pseudo-second-order model, and the dominant mechanism was chemisorption. The adsorption behavior was well described by the Langmuir isotherm model. Due to the strong interaction between MR–FeS nanoparticles and SC support, MR–[email protected] nanocomposite exhibited better reusability and stability even after fifteen cycles. This study provides a facile method of preparing effective and stable adsorbents for the treatment of dye wastewater. View Full-Text
Keywords: FeS nanoparticles; carbon; starch; manganese residue; adsorption; stable adsorbent FeS nanoparticles; carbon; starch; manganese residue; adsorption; stable adsorbent
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Hu, H.; Lin, C.; Zhang, Y.; Cai, X.; Huang, Z.; Chen, C.; Qin, Y.; Liang, J. Preparation of a Stable Nanoscale Manganese Residue-Derived [email protected] Carbon Composite for the Adsorption of Safranine T. Nanomaterials 2019, 9, 839.

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