Abstract
Ultrafine (Ni, Zn)-ferrites were prepared by two different methods of coprecipitation and hydrothermal synthesis, and their oxygen-deficient ferrites (ODF) produced by hydrogen reduction were investigated on the efficiency of CO2 decomposition. The crystalline sizes of (Ni, Zn)-ferrites were less than 30 nm with high Brunauer–Emmett–Teller (BET) surface areas, ranging from 77 to 172 m2 g−1. The (Ni, Zn)-ferrites by hydrothermal synthesis resulted in smaller crystalline sizes, higher BET surface areas and better efficiencies of CO2 decomposition than by coprecipitation. Compared with the binary NiFe2O4−δ ferrite, the ternary (Ni x , Zn1−x ) Fe2O4−δ ferrites showed higher efficiency for CO2 decomposition, indicating a potential catalyst for the reduction of CO2 emission in the environmental atmosphere.
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Kim, JS., Ahn, JR. Characterization of wet processed (Ni, Zn)-ferrites for CO2 decomposition. Journal of Materials Science 36, 4813–4816 (2001). https://doi.org/10.1023/A:1017999610010
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DOI: https://doi.org/10.1023/A:1017999610010