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<p>Uranium-containing wastewater from the nuclear fuel cycle poses severe hazards to human health and the environment. In this study, a carboxylated multi-walled carbon nanotube/copper oxide/nano silver modified graphite felt electrode (MCA) material was designed, exhibiting electrosorption performance with electrical double layer and pseudocapacitance characteristics. Electrosorption processes proved the ability to adsorb U(VI). MCA-2 had the highest removal rate (93.31%) due to superior conductivity, stability, and capacitance characteristics. A high adsorption capacity of 361&#xa0;mg/g was reached in a 200&#xa0;mg/L U(VI) solution. MCA achieves good cycling stability and high selectivity, making it a potential electrode material for radioactive wastewater treatment.</p>

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Construction of carboxylated multi-walled carbon nanotube/copper oxide/nano silver modified graphite felt electrode and its adsorption mechanism for UO22+

  • 期刊论文

  • 发表日期：

    2025年2月5日

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  • Mengshi Hu,
  • Qian Li,
  • Guangyue Li,
  • Tingting Liu,
  • Xiaowei Zhou,
  • Jing Sun,
  • Zhao Cui,
  • Ting Li

摘要

Uranium-containing wastewater from the nuclear fuel cycle poses severe hazards to human health and the environment. In this study, a carboxylated multi-walled carbon nanotube/copper oxide/nano silver modified graphite felt electrode (MCA) material was designed, exhibiting electrosorption performance with electrical double layer and pseudocapacitance characteristics. Electrosorption processes proved the ability to adsorb U(VI). MCA-2 had the highest removal rate (93.31%) due to superior conductivity, stability, and capacitance characteristics. A high adsorption capacity of 361 mg/g was reached in a 200 mg/L U(VI) solution. MCA achieves good cycling stability and high selectivity, making it a potential electrode material for radioactive wastewater treatment.