期刊
CHEMOSPHERE
卷 289, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2021.133101
关键词
Graphene oxide; Zinc oxide; ZnO-GO nanocomposites; As(III) removal; Adsorption isotherms; Sensing studies
资金
- Interdisciplinary Centre for Water Research (ICWaR), Research Grant in the form of IOE-IISc fellowship from the Indian Institute of Sciences, Bangalore [IE/REAC-20-0134]
A multifunctional nanohybrid was synthesized for the adsorption and detection of As(III) using a solvothermal approach, showing high adsorption capacity and efficient removal of As(III) due to its large surface area. The nanocomposite also demonstrated potential as a sensor for As(III) detection.
Herein, for the adsorption and detection of As (III), multifunctional nanohybrid have been synthesized using a solvothermal approach. Structural and functional characterizations confirmed the impregnation of the ZnO over graphene oxide. Nanohybrid exhibits a remarkable qmax (maximum adsorption capacity) of 8.17 mg/g, at an adsorbent dose of 3 g/L and pH of 8.23. Higher adsorption with nanohybrid was attributed to a large BET surface area of 32.950 m(2)/g. The chemical nature and adsorption behaviour of As(III) on ZnO-GO were studied by fitting the data with various adsorption isotherms (Langmuir & Freundlich) and kinetics models (six models). It is observed from the findings that removal of As(III) with ZnO-GO nanocomposite appears to be technically feasible with high removal efficiency. The feasibility of the nanocomposite to function as a sensor for the detection of As (III) was also evaluated. The fabricated sensor could detect As(III) with a lower limit of detection of 0.24 mu M and linear range up to 80 mu M. Overall, this study is significant in nanohybrid as a multifunctional composite for the adsorption and detection of As (III) from wastewater.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据