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



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.