Magnetic Prussian blue nanoshells are controllable anchored on the surface of molybdenum disulfide nanosheets for efficient separation of radioactive cesium from water

Shanshan Feng; Jingshuai Gao; Xiaoda Li; Sheng Fang; Hao Fang; Jie Ni; Rouxue Huang; Wenhao Jia; Lu Yang; Xun Cao; Yao Zhang; Zhihui Zhang; Sheng Feng

doi:10.1016/j.scitotenv.2023.169365

Magnetic Prussian blue nanoshells are controllable anchored on the surface of molybdenum disulfide nanosheets for efficient separation of radioactive cesium from water

Sci Total Environ. 2024 Feb 20:912:169365. doi: 10.1016/j.scitotenv.2023.169365. Epub 2023 Dec 15.

Authors

Shanshan Feng¹, Jingshuai Gao², Xiaoda Li³, Sheng Fang², Hao Fang², Jie Ni², Rouxue Huang², Wenhao Jia², Lu Yang², Xun Cao², Yao Zhang², Zhihui Zhang⁴, Sheng Feng⁵

Affiliations

¹ School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China; Jiangsu Petrochemical Safety and Environmental Protection Engineering Research Center, Changzhou 213164, China. Electronic address: fss728@163.com.
² School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China.
³ Peking University Medical and Health Analysis Center, Beijing 100871, China.
⁴ School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China. Electronic address: zhangzh@cczu.edu.cn.
⁵ School of Environmental Science and Engineering, Changzhou University, Changzhou 213164, China. Electronic address: shfeng@cczu.edu.cn.

PMID: 38104823
DOI: 10.1016/j.scitotenv.2023.169365

Abstract

The rapid development of nuclear energy in China has led to increased attention to the treatment of radioactive wastewaters. Herein, a novel magnetic adsorbent, magnetic Prussian blue‑molybdenum disulfide (PB/Fe₃O₄/MoS₂) nanocomposite, was prepared by a simple in-situ fixation of ferric oxide nanoparticles (Fe₃O₄ NPs) and Prussian Blue (PB) shell layers on the surface of molybdenum disulfide (MoS₂) nanosheets carrier. The prepared PB/Fe₃O₄/MoS₂ nanocomposites adsorbent displayed excellent fast magnetic separation and adsorption capacity of Cs⁺ (Q_m = 80.51 mg/g) from water. The adsorption behavior of Cs⁺ by PB/Fe₃O₄/MoS₂ conformed to Langmuir isothermal and second-order kinetic model, which belonged to chemical adsorption and endothermic reaction. The equilibrium adsorption capacity of PB/Fe₃O₄/MoS₂ to Cs⁺ has reached 90 % in less than 110 min. Moreover, the adsorption properties of PB/Fe₃O₄/MoS₂ remained good in the pH range of 2-7. Based on this, PB/Fe₃O₄/MoS₂ complex was a fast and high selectivity adsorption material for Cs⁺, which was expected to be used in the practical treatment of cesium-containing radioactive wastewater.

Keywords: Ion exchange; Lewis's acid base effect; Radioactive wastewater; Shell layers.