Nano-silica hybrid SDB carriers with high strength and hydrophobicity: synthesis, characterization and their application
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ORIGINAL PAPER
Nano‑silica hybrid SDB carriers with high strength and hydrophobicity: synthesis, characterization and their application as sorbents of Ni2+ Li Yu1 · Nanjun Chen1 · Wenjiao Chen1 · Cailin Liu1 · Xianyan Ren1 · Haijun Yang1 · Shudong Lin2 Received: 9 February 2020 / Accepted: 24 September 2020 © Institute of Chemistry, Slovak Academy of Sciences 2020
Abstract In Liquid Phase Catalytic Exchange (LPCE), the strength and hydrophobicity of styrene-divinylbenzene copolymer (SDB) carrier are key limitation factors for practical applications. In this paper, a surface-modified nano-SiO2 (KH570-SiO2) was used to improve the strength and hydrophobicity of SDB. Then, copolymerization of KH570SiO2 with St, DVB to produce KH570-SiO2/SDB, Divinyl benzene (DVB), styrene (St) glycidyl methacrylate (GMA) to produce KH570-SiO2/GMA/SDB. The two kinds of new carriers were characterized by scanning electron microscope, static water contact angle, N2 adsorption–desorption, transform infrared spectrometry and thermogravimetric analysis. Compared with SDB, both KH570-SiO2/ SDB and KH570SiO2/GMA/SDB show better performances, such as a higher hydrophobicity(147° and 145°, respective), a higher strength(107.11 N and 115.37 N, respectively), a better thermal stability(373.8 and 435.67 ℃, respectively), and a larger specific surface area(487.253 and 463.673 m2/g, respective). The Nickel ion was uesd as the model ion of Platinum ion. And then the N i2+ adsorption performances of KH570-SiO2/SDB and KH570-SiO2/GMA/SDB were studied. Experiments show that KH570-SiO2/GMA/SDB has a much higher adsorption rate and a bigger adsorption amount. Refinement indicates that the adsorption behaviors of SDB, KH570-SiO2/SDB and KH570-SiO2/GMA/SDB with Ni2+ are according to pseudo-first-order kinetic. The adsorption of SDB and KH570-SiO2/GMA/SDB obeyed Freundlich isotherm, while the adsorption of KH570-SiO2/SDB obeyed Langmuir isotherm. Keywords Styrene–divinylbenzene copolymer · Hybird · Nano-SiO2 · Silane coupling agent · Glycidyl methacrylate · Adsorption simulation
Introduction In recent years, the imbalances of global Eological and lots of greenhouse gas were caused by the high-frequency use of fossil fuels. Nevertheless, Nuclear power generation is the Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11696-020-01378-w) contains supplementary material, which is available to authorized users. * Cailin Liu [email protected] * Shudong Lin [email protected] 1
School of Materials Science and Engineering, State Key Laboratory for Environment‑Frie Ndly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
Chinese Academy of Sciences Guangzhou Chemical Co., Ltd, Guangzhou 510650, Guan gdong, China
2
use of thermal energy which released by nuclear fission in the reactors to generate electricity, and it could be an important way to achieve low-carbon power generation (Kalyanam and Sood 1988; Iwai et al. 2000). Generally, tritium-containin
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