Ultra-high surface area porous carbon from catechol rectification residue with excellent adsorption capacity for various organic pollutants

被引：10

作者：

Gu, Jinhui ^{[1
]}

Yang, Junhao ^{[1
]}

Dou, Zhenjiang ^{[1
]}

Tang, Jihai ^{[1
,2
]}

Zhu, Jianjun ^{[3
]}

Chen, Junming ^{[3
]}

Liu, Qing ^{[1
]}

Fei, Zhaoyang ^{[1
]}

Chen, Xian ^{[1
]}

Zhang, Zhuxiu ^{[1
]}

Cui, Mifen ^{[1
]}

Qiao, Xu ^{[1
,2
]}

机构：

[1] Nanjing Tech Univ, Coll Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China

[2] Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Nanjing 210009, Jiangsu, Peoples R China

[3] Jiangsu Jiujiujiu Technol Ltd Co, Nantong 226407, Jiangsu, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2022年 / 284卷

基金：

中国国家自然科学基金;

关键词：

Catechol rectification residue; Porous carbons; Ultrahigh surface area; Organic pollutants; Adsorption performance; ACTIVATED CARBON; AQUEOUS-SOLUTION; METHYL RED; STEAM ACTIVATION; PORE STRUCTURE; BISPHENOL-A; REMOVAL; GRAPHENE; TEMPERATURE; PERFORMANCE;

D O I：

10.1016/j.seppur.2021.120244

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

It is challenging to turn fine chemical industrial residue into porous carbons with ultrahigh surface area and excellent adsorption property for various organic pollutants. Herein, to address this issue, a novel NaNH2 self-synergy strategy and other four traditional activation methods (KOH, H3PO4, CO2 and air) were developed to synthesize different catechol rectification residue-based porous carbons. Then, structure characteristics, surface morphologyies and chemical properties of these carbons were analyzed to systematically investigate the effect of these methods on the structure-performance of carbons. Results showed that porous carbon (CC-N) prepared by NaNH2 self-synergy strategy possessed ultrahigh specific surface area, up to 3954 m(2)/g, which was 1.5 similar to 66 times higher than that of other carbons prepared by traditional activation methods and NaNH2 activation without self-synergy strategy. Additionally, in-depth study revealed that part of NaNH2 reacted with the water from residue carbon to form self-synergy effect during activation process. This effect brought the most comprehensive activation abilities. In terms of application, the adsorption capacity of CC-N for various popular organic pollutants was considerable. CC-N had the highest adsorption capacity (1205 mg/g) for tetracycline (TC) among most of the reported adsorbents. Adsorption mechanisms of TC onto CC-N were proved by hydrophobic interactions, pi-pi interaction, H-bond. In general, this article can be served as one new reference to improve the porosity and adsorption performance of porous carbon by novel adjustable NaNH2 self-synergy strategy.

引用

页数：11