Synthesis and Characterization of Porous BiFeO3 Nanoparticles via a Pluronic P123-Assisted Sol-Gel Method
Porous BiFeO3 nanoparticles were synthesized via sol-gel method in the presence of block copolymer Pluronic P123 surfactant. X-ray diffraction results showed that the nanoparticles were of single perovskite phase. Transmission electron microscopy images revealed that the porous BiFeO3 nanoparticles could only be synthesized at a lower calcining temperature in the range of 400-450 ℃. Nitrogen absorption-desorption isotherms suggested that the mesopores were aggregated pores which were formed by the aggregation of small primary particles. Bandgap value of 2.01eV derived from UV-vis spectrum indicated that BiFeO3 was a potential candidate for visible-light photocatalytic applications. The photocatalytic property of the porous BiFeO3 nanoparticles were investigated by the photodegradation of methyl orange. The porous powders exhibited better catalytic activity than the nonporous ones.
Juyue Song Dengren Jin Xiaolong Yan Shengwen Yu Jinrong Chen
School of Materal Science & Engineering,Shanghai University,No.149 Yanchang Road,Shanghai,200072,China
国际会议
西安
英文
67-71
2009-08-23（万方平台首次上网日期，不代表论文的发表时间）