Rosin-derived porous microspheres with robust selective cationic dye adsorption

编号 020030301

推送时间 20210809

研究领域 林产化工 

年份 2021 

类型 期刊 

语种 英语

标题 Rosin-derived porous microspheres with robust selective cationic dye adsorption

来源期刊 Iranian Polymer Journal

期 第303期

发表时间 20210712

关键词 Adsorption;  Dyes;  Methylene blue;  Crystal violet;  Rosin;  Polymer microspheres; 

摘要 The utilization of rosin to fabricate functional polymers has attracted great attention due to its unique structure and property. Herein, we prepared a new type of carboxyl-containing cross-linked rosin microspheres (CCRMs) using a renewable-resource rosin as the raw material through the suspension polymerization. For comparative purpose, vanillin methacrylate (VMA), styrene (St) and isobornyl methacrylate (IBOMA) were separately used to replace DAGMA as monomer for the preparation of microspheres. Our results indicated that the obtained porous CCRMs showed a broad size distribution ranging from mesopores (3-50 nm) to macropores (> 50 nm), whereas the counterparts derived from VMA, St or IBOMA showed a powder state. Moreover, the CCRMs exhibited moderately high thermal stability. The integration of DAGMA into polymer microspheres provided CCRMs with excellent adsorption ability, which exhibited robust selective cationic dye (e.g., methylene blue (MB) and crystal violet (CV)) adsorption from waste aqueous solution. The adsorption process was fitted well with the Langmuir isotherm and the pseudo-second-order kinetic model. The maximum adsorption capacity was observed to be 602.4 mg/g for CV at 40 degrees C, and 512.8 mg/g for MB at 20 degrees C. In general, the high dye adsorption properties suggest that CCRMs may be highly efficient in adsorption selectivity for some cationic dyes.

服务人员 尚玮姣

服务院士 宋湛谦

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