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| Low-temperature synthesis of tetragonal BaTiO3 for piezocatalysis |
| Author Name | Affiliation | E-mail | | HU Zhiwen | School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, China
State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China | | | DONG Weixia | School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, China
State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China | weixia_dong@sina.com | | BAO Qifu | School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, China | | | LI Ping | School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi 333403, China | |
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| Abstract: BaTiO3 was synthesized at low-temperatures based on the starch gelatinization mechanism. The morphology and phase structure of as-synthesized samples were characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), Fourier transform infrared spectra (FTIR), UV visible (UV-Vis) absorption spectra, and X-ray photoelectron spectroscopy (XPS). The piezocatalytic performance of BaTiO3 was tested targeting a series of typical dyes for degradation. The results showed that tetragonal BaTiO3 powder was obtained at a calcination temperature of 600℃, and the crystallinity gradually increased with the increase in temperature. Cubic-like BaTiO3 with uniform size distribution was synthesized at a calcination temperature of 700℃; The degradation of rhodamine B (RhB), Congo red (CR), and methyl orange (MO) dyes by BaTiO3 all showed good performance, with reaction rate constants of 1.090×10-2, 1.113×10-2, and 1.084×10-2 min-1, respectively. Furthermore, the mechanism of piezocatalysis reveals that the hole (h+) and superoxide radicals (·O2-) are the main reactive species in the degradation process by targeting the degradation of CR. |
| Keywords: starch gelatinization low-temperature BaTiO3 piezocatalysis |
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| HU Zhiwen,DONG Weixia,BAO Qifu,LI Ping.Low-temperature synthesis of tetragonal BaTiO3 for piezocatalysis[J].Chinese Journal of Inorganic Chemistry,2024,40(5):857-866. |
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