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Sonochemical Method for the Preparation of Hollow SnO2 Microspheres 被引量:1
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作者 张霞 赵彦保 +3 位作者 陶小军 吴志申 张平余 张治军 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2006年第7期983-985,共3页
A simple sonochemical route has been successfully developed to synthesize SnO2 hollow microspheres. The obtained sample is characterized by XRD, TEM, XPS and UV-visible spectrophotometer. The TEM image of the sample a... A simple sonochemical route has been successfully developed to synthesize SnO2 hollow microspheres. The obtained sample is characterized by XRD, TEM, XPS and UV-visible spectrophotometer. The TEM image of the sample at high magnification shows that the shell of the hollow sphere is composed of 3-5 nm SnO2 nanoparticles. A possible formation mechanism of the hollow spheres is briefly discussed. 展开更多
关键词 SNO2 sonochemical method hollow microsphere
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Photocatalytic activity of La-doped ZnO nanostructure materials synthesized by sonochemical method 被引量:3
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作者 Anukorn Phuruangrat Phattranit Dumrongrojthanath +3 位作者 Oranuch Yayapao Jirapong Arin Somchai Thongtem Titipun Thongtem 《Rare Metals》 SCIE EI CAS CSCD 2016年第5期390-395,共6页
ZnO nanostructure materials doped with different La contents were synthesized by sonochemical method. The products were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM),transmission elect... ZnO nanostructure materials doped with different La contents were synthesized by sonochemical method. The products were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM),transmission electron microscopy(TEM), Raman spectroscopy, and Fourier transform infrared spectroscopy(FTIR). In this research, XRD patterns of pure ZnO and La-doped ZnO are specified as hexagonal wurtzite ZnO structure with no detection of La2O3 phase. SEM and TEM characterization revealed the flower shape of pure ZnO built-up from petals of hexagonal prisms with hexagonal pyramid tips. Upon doping with La, the flower-shaped ZnO is broken into individual 1D prism-like nanorods. Photocatalytic activities of the as-synthesized products were determined by measuring the degradation of methylene blue(MB) under ultraviolet–visible(UV) light irradiation.Among them, the 2.0 mol% La-doped ZnO shows better photocatalytic properties than any other products. 展开更多
关键词 Nanostructure materials sonochemical method Photocatalysis
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Sonochemical Synthesis of Two Dimensional C3N4 Nanosheets Supported Palladium Composites and Their Electrocatalytic Activity for Oxygen Reduction and Methanol Oxidation Reaction 被引量:1
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作者 Lingxia Zuo Liping Jiang Jun-Jie Zhu 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2017年第6期969-976,共8页
The preparation of highly active electrocatalysts with good durability and low cost for fuel cells is highly desir- able but still remains a significant challenge. Here we synthesized two dimensional (2D) C3N4 nanos... The preparation of highly active electrocatalysts with good durability and low cost for fuel cells is highly desir- able but still remains a significant challenge. Here we synthesized two dimensional (2D) C3N4 nanosheets supported palladium composites (C3N4/Pd) via a simple and convenient sonochemical approach. We have systematically stud- ied the electrocatalytic performance of as-prepared catalysts. We found that the prepared C3N4/Pd composites pos- sessed excellent catalytic activity and stability for oxygen reduction reaction (ORR) in alkaline media. Encourag- ingly, the C3N4/Pd catalysts exhibit the excellent electrocatalytic activity for methanol oxidation reaction (MOR) in alkaline media, even better than that of the commercial Pt/C catalyst, The excellent electrocatalytic performance of the 2D C3N4 nanosheets supported palladium composites catalysts results from their synergy effect between the ul- trathin substrate material with large surface area and excellent dispersion of palladium nanoparticles. This study demonstrates that sonochemical method opens up a new avenue for the preparation of electrocatalysts for fuel cells. We expect these materials are likely to find uses in a broad range of applications, for example, fuel cells, solar cells, batteries and other electrochemical analysis. 展开更多
关键词 sonochemical method C3N4/Pd oxygen reduction reaction methanol oxidation reaction
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