Characterization of wet processed (Ni, Zn)-ferrites for Co2 decomposition

Jung Sik Kim; Jung Ryul Ahn

doi:10.1023/A:1017999610010

Characterization of wet processed (Ni, Zn)-ferrites for Co₂ decomposition

Jung Sik Kim
, Jung Ryul Ahn

Department of Materials Science and Engineering

University of Seoul

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

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 NiFe₂O_4-δ ferrite, the ternary (Ni_x, Zn_1-x) Fe₂O_4-δ ferrites showed higher efficiency for CO₂ decomposition, indicating a potential catalyst for the reduction of CO₂ emission in the environmental atmosphere.

Original language	English
Pages (from-to)	4813-4816
Number of pages	4
Journal	Journal of Materials Science
Volume	36
Issue number	19
DOIs	https://doi.org/10.1023/A:1017999610010
State	Published - 1 Oct 2001

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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 (Nix, 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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N2 - 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 (Nix, 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.

AB - 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 (Nix, 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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Characterization of wet processed (Ni, Zn)-ferrites for Co₂ decomposition

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