In situ nano-assembly of Mg/Al LDH embedded on phosphorylated cellulose microspheres for tetracycline hydrochloride remo
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ORIGINAL RESEARCH
In situ nano-assembly of Mg/Al LDH embedded on phosphorylated cellulose microspheres for tetracycline hydrochloride removal Cong Yang . Jun Yuan . Yi Guo . Xiaogang Luo
Received: 23 June 2020 / Accepted: 14 October 2020 Ó Springer Nature B.V. 2020
Abstract In this work, Mg/Al layered double hydroxides embedded phosphorylated cellulose microspheres (Mg/Al LDH@PCMs) were prepared first with solid-phase phosphorylation on CMs then in situ nano-assembly between Mg2?, Al3? and phosphate groups. Hence the synthesis degree of Mg/Al LDH was enhanced. The obtained Mg/Al LDH@PCMs were characterized by scanning electron microscopy (SEM), specific surface area test (BET), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), f potential, X-ray electron energy (XPS). The novel in situ nano-assembly method provided improved Mg/Al LDH load without
Supplementary Information The online version contains supplementary material available at https://doi.org/10.1007/ s10570-020-03533-8. C. Yang J. Yuan X. Luo Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemistry Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, LiuFang Campus, No.206, Guanggu 1st Road, Donghu New and High Technology Development Zone, Wuhan 430205, Hubei Province, People’s Republic of China Y. Guo (&) Hubei Key Laboratory of Biomass Fibers and Eco-dyeing and Finishing, Wuhan Textile University, Wuhan, People’s Republic of China e-mail: [email protected]
compromising the porous structure of CMs, making Mg/Al LDH@PCMs suitable for water treatment. The Mg/Al LDH@PCMs adsorbed tetracycline hydrochloride (TC) with a kinetic pattern of pseudo secondorder kinetic model, while isothermally fitted with the Freundlich isotherm model. The maximum theory adsorption capacity of Mg/Al LDH@PCMs qm was 25.107 mg g-1 with the Gibbs free energy DG = 7.523 kJ mol-1 under 298 K. The TC removal mechanism was deeply investigated via characterization results and also the batch experimental results, it was inferred that electrostatic attraction between LDH particles and the anion species mainly dominated the adsorption process. These properties make Mg/Al LDH@PCMs have a wide application prospect in the water purification field.
X. Luo School of Materials Science and Engineering, Zhengzhou University, No.100 Science Avenue, Zhengzhou City 450001, Henan Province, People’s Republic of China X. Luo (&) School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, 693 Xiongchu Avenue, Wuhan 430073, Hubei, People’s Republic of China e-mail: [email protected]; [email protected]
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Cellulose
Keywords Phosphorylated cellulose microspheres Mg–Al layered double hydroxide In situ nanoassembly method Tetracycline hydrochloride removal
Introduction Cellulose microspheres (CMs) were massively studied as the supports in water treatment field (Luo et al. 2017, 2019; Xu et al. 2018
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