Renewable 4-HIF/NaOH aerogel for efficient methylene blue removal via cation-π interaction induced electrostatic interaction

被引:9
作者
Zhang, Longfei [1 ]
Yang, Li [1 ]
Xu, Yewei [1 ]
Chang, Guanjun [1 ]
机构
[1] Southwest Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China
基金
中国国家自然科学基金;
关键词
GRAPHENE OXIDE; HIGHLY EFFICIENT; RAPID ADSORPTION; FACILE SYNTHESIS; CARBON; WATER; POLYMER; DYES; MICROSPHERES; ACTIVATION;
D O I
10.1039/c9ra04166d
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A novel porous organic material 4-hydroxyindole-formaldehyde/NaOH (4-HIF/NaOH) aerogel was prepared via a facile polymerization, soaking in NaOH aqueous solution and ambient drying method. 4-HIF/NaOH aerogel porous polymer networks with high surface area have been applied as efficient adsorbents to remove methylene blue from wastewater via synergistic effects of cation-pi interaction induced electrostatic interaction, electrostatic interaction and pi-pi interaction. The adsorption capacity calculated by adsorption isotherms at 303 K was 1016.9 mg g(-1) which is higher than those observed for methylene blue on other aerogels and most other materials. Furthermore, the methylene blue loaded 4-HIF aerogel can easily be regenerated with 0.1 M HCl solution and ethanol wash, retaining over 75% of the adsorption capacity after recycling five times.
引用
收藏
页码:29772 / 29778
页数:7
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