Sol-Gel Synthesis and Sensing Study of Perovskite CaCu₃Ti₄O₁₂ Nanopowders

Yang Tian Department of Chemistry, Capital Normal University, Beijing, P. R. China

Xiaojie Zhang Department of Chemistry, Capital Normal University, Beijing, P. R. China

Yiyi Yang Department of Chemistry, Capital Normal University, Beijing, P. R. China

Zhen Liu Department of Chemistry, Capital Normal University, Beijing, P. R. China

Xiaozhu Huang Department of Chemistry, Capital Normal University, Beijing, P. R. China

Abstract

CaCu₃Ti₄O₁₂ nanopowders were fabricated by a facile effective sol-gel route using tetrabutyl titanate, calcium acetate and cupric nitrate as precursors. The intermediate xerogel was characterized by thermal analyzer and the products with different calcination temperature were then studied by IR spectrum. Further X-ray diffraction, transmission electronic microscopy, high-resolution transmission electron microscopy and energy dispersive X-ray spectrum were used to characterize the prepared CaCu₃Ti₄O₁₂ nanopowders. Additionally, the obtained CaCu₃Ti₄O₁₂ nanopowders were investigated as a gas sensitive material responding to ethanol atmosphere, and it showed high sensitivity for ethanol gas.

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5. Acknowledgment

This work was supported by Beijing Natural Science Foundation (2103048).

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Sol-Gel Synthesis and Sensing Study of Perovskite CaCu₃Ti₄O₁₂ Nanopowders

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Sol-Gel Synthesis and Sensing Study of Perovskite CaCu₃Ti₄O₁₂ Nanopowders