• Nguyen Dinh Trung Dalat University
  • Le Vu Tram Anh Dalat University
  • Truong Dong Phuong Dalat University
  • Kieu Thi Dan Thy Dalat University
  • Nguyen Tran Thuy Hong Dalat University
  • Ning Ping Kunming University of Science and Technology
  • Duong Thi Huong Giang Lam Ha High School
  • Ho Kim Dan Van Lang University



Adsorption, Cesium, Copper hexacyanoferrate, Strontium.


Low-cost nanoscale copper hexacyanoferrate (CuHF), a good selective adsorbent for cesium (Cs+) removal, was prepared using the chemical co-precipitation method. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), and high-resolution transmission electron microscopy (HR-TEM) were conducted to determine the CuHF morphology. Copper hexacyanoferrate, Cu13[Fe(CN)6]14.(2K).10H2O, has a cubic structure (space group F-43m) in the range of 10-30 nm and a Brunauer-Emmett-Teller (BET) surface area of 462.42 m2/g. The removal of Cs+ and Sr2+ is dependent on pH; the maximum adsorption capacity (qmax) of CuHF is achieved at a pH = 6. From the Langmuir model, qmax = 143.95 mg/g for Cs+ and 79.26 mg/g for Sr2+, respectively. At high concentrations, Na+, Ca2+, and K+ ions have very little effect on Cs+ removal, and Na+ and K+ ions have a higher affinity for removing Sr2+ than Ca2+ at all concentrations. CuHF has a high affinity for alkaline cations in the order: Cs+ > K+ > Na+ > Ca2+ > Sr2+, as proposed and discussed.


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Volume and Issues


Natural Sciences and Technology

How to Cite

Nguyen, D. T., Le, V. T. A., Truong, D. P., Kieu, T. D. T., Nguyen, T. T. H., Ning, P., Duong, T. H. G., & Ho, K. D. (2021). COPPER HEXACYANOFERRATE (II): SYNTHESIS, CHARACTERIZATION, AND CESIUM, STRONTIUM ADSORBENT APPLICATION. Dalat University Journal of Science, 11(4), 76-97.