期刊
ACS APPLIED NANO MATERIALS
卷 4, 期 2, 页码 1831-1840出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.0c03235
关键词
Fe3O4@mSiO(2)@CS@PANTI; Cr(VI); fast adsorption kinetics; in situ chemical reduction; detoxification; environmental remediation
资金
- Science and Technology Commission of Shanghai Municipality [14440502300]
- [D15011]
In this study, Fe3O4@mesoporous-SiO2@chitosan@polyaniline core-shell nanoparticles (FSCP) were developed for the capture of Cr(VI) in wastewater. The material exhibited rapid adsorption and high removal capability, with excellent stability and potential application for chromium-containing wastewater treatment.
In this work, we designed the Fe3O4@mesoporous-SiO2@chitosan@polyaniline core-shell nanoparticles (Fe3O4@mSiO(2) @CS@PANI, hence abbr. FSCP), which can be used to capture Cr(VI) in wastewater. Rapid adsorption behavior and high removal capability (249.6 mg Cr(VI) per gram of FSCP) were exhibited by this material. X-ray photoelectron spectroscopy (XPS) analysis demonstrates that Cr(VI) was adsorbed and in situ reduced on FSCP at pH 2. Adsorption was facilitated by the electrostatic attraction of HCrO4- and -N+=C-/-N+H-, while the active -NH-/-N+H- sparked the reduction of Cr(VI) to Cr(III). Moreover, the coordination of the resulting Cr(III) with the amino group promoted adsorption, thus achieving detoxification of Cr(VI) in wastewater. After eight recycling experiments, the Cr(VI) removal efficiency of this material is still more than 90%, indicating that this material has excellent stability and good application potential. Therefore, this magnetic adsorbent offers a potential solution for the successful handling of chromium-containing 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