A novel Fe3O4/graphene oxide/citrus peel-derived bio-char based nanocomposite with enhanced adsorption affinity and sensitivity of ciprofloxacin and sparfloxacin

被引：113

作者：

Zhou, Yue ^{[1
]}

Cao, Shurui ^{[2
]}

Xi, Cunxian ^{[3
]}

Li, Xianliang ^{[3
]}

Zhang, Lei ^{[3
]}

Wang, Guomin ^{[3
]}

Chen, Zhiqiong ^{[1
]}

机构：

[1] Chongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R China

[2] Southwest Univ Polit Sci & Law, Forens Identificat Ctr, Chongqing 401120, Peoples R China

[3] Inspect Tech Ctr Chongqing Customs, Chongqing 400020, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2019年 / 292卷

关键词：

Biochar; Graphene oxide; Ciprofloxacin; Sparfloxacin; Adsorption; ACTIVATED CARBON; GRAPHENE OXIDE; BIOCHAR; TETRACYCLINE; REMOVAL; COMPOSITES; POLLUTANTS; MECHANISM; ADSORBENT; ISOTHERM;

D O I：

10.1016/j.biortech.2019.121951

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

To create more active adsorption sites on biochar, the Fe3O4/GO/citrus peel-derived magnetic bio-nanocomposite (mGOCP) with hierarchically porous architectures was synthesized by a facile one-pot hydrothermal approach for efficient removal of fluoroquinolone antibiotics ciprofloxacin (CIP) and sparfloxacin (SPA). The characterization analysis of bio-nanocomposites showed that the incorporation of GO could ensure relatively higher surface area (1556 cm(2) g(-1)), more abundant pore structure, and higher thermal stability within mGOCP bio-nanocomposites than Fe3O4/citrus peel-derived magnetic bio-nanocomposites (mCP). And the mGOCP-1% attained outstanding adsorption capacity for CIP (283.44 mg g(-1)) and SPA (502.37 mg g(-1)), respectively. The primary adsorption mechanisms for CIP and SPA included pi-pi electron donor-acceptor interaction, H-bonding, hydrophobic interaction and electrostatic interaction. Overall, the surface morphology and structural composition of biochars could be regulated with GO to facilitate the adsorption capacity. Moreover, the developed mGOCP could be extended as a potential adsorbent for removal of other emerging organic pollutants in water.

引用

页数：10

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