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Chemical Research in Chinese Universities 2006年第4期22卷 423-426页

作者： HUA Rui-nian SUN Hong-jie JIANG Hui-ming SHI Chun-shan College of Life Science Dalian Nationalities University Dalian 116600 P. R. China Key Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China

Nanocrystals and powders of KMgF3 doped with Eu^2＋ were synthesized by the microemulsion method and the selvothermal process, respectively. The emission and excitation spectra of KMgF3： Eu^2＋ phosphors were measured and compared with those of the samples synthesized through a solid state reaction, Bridgman-Stockbarger method, and mild hydrothermal technique. The KMgF3： Eu^2＋ samples synthesized by means of the microemulsion method and the solvothermal process show only a sharp emission peak located at 360 nm in the emission spectra, which arises from the f→f（ ^6P7/2→^8S7/2 ） transition of Eu^2＋ The broad emission bands appear at 420 nm, which arises from Eu^2＋←O^2- cannot be observed（ in the mild hydrothermal and single crystal samples, the emission peak at 420 nm besides the emission of Eu^2＋ at 360 nm is observed）. In the excitation spectrum of the KMgF3 ： Eu^2＋ samples synthesized by the microemulsion method and the solvothermal process, the excitation peaks show an intensive blue shift. The blue shift can be attributed to the lower oxygenic content in the KMgF3 ： Eu^2＋ samples synthesized by the microemulsion method and the selvothermal process.

关键词： KMgF3 ： Eu（ Ⅱ ） phosphor Optical property Microemulsion solvothermal process Nanocrystal

Preparation of Sn-doped In_2O_3 nanopowders by a solvothermal process

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Rare Metals 2008年第1期27卷 27-31页

作者： GU Yingying QIN Liping School of Chemistry and Chemical Engineering Central South University Changsha 410083 China Science and Technology Department Guangxi University ofTectmology Liuzhou 545006 China

Sn-doped In2O3（ITO） nanopowders in square shape were prepared in ethylene solvent by a solvothermal process,using In（4N） and SnCl4·5H2O as starting materials.The effects of solvothermal temperature and coprecipitation pH on the products were investigated using XRD,XPS,and TEM.Mixtures of InOOH crystals and In4Sn3O12 crystals were prepared at 210°C or 230°C and ITO nanopowders with cubic structure were obtained at 250°C or above 250°C.When the coprecipitation pH was 6,the product was ITO with impurity Sn3O4.When the pH was 9,the product was single phase ITO.

关键词： composite material ITO solvothermal process square shape

Application of the solvothermal process in the Synthesis of High-performance Ag/γ-Al_2O_3 Catalysts

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过程工程学报 2006年第4期6卷 633-638页

作者：唐清李锐星殷澍 Shingo Goto Daisuke Nagai Tsugio Sato Institute of process Engineering Chinese Academy of Sciences Institute of Multidisciplinary Research for Advanced Materials Tohoku UniversitySendai 980-8577Japan

Ag/γ-Al2O3 is a kind of promising catalyst with the relatively lower cost compared with those using noble metals,good resistance against catalytic poisoning and excellent behaviour for NOx removal.In the present study,Ag/γ-Al2O3 catalysts were synthesized by the solvothermal process and characterized by XRD,TG?DTA,TEM,UV?Vis and FT?IR.It was found that high-performance Ag/γ-Al2O3 catalysts could be synthesized by properly selecting starting materials,controlling the composition of solvent and other reaction conditions.The microstructure evolution of the catalysts was also discussed.

关键词： Ag/γ-Al2O3 solvothermal process catalyst microstructure

Key synthesis of magnetic Janus nanoparticles using a modified facile method

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Particuology 2014年第6期12卷 59-65页

作者： Nisar Ali Baoliang Zhang Hepeng Zhang Wajed Zaman Wei Li Qiuyu Zhang Key Laboratory of Applied Physics and Chemistry in Space of Ministry of Education School of ScienceNorthwestern Polytechnical University School of Material Science & Engineering Northwestern Polytechnical University

Inorganic/organic poly（methylmethacrylate-acrylic acid-divinylbenzene） iron oxide Janus magnetic nanoparticles（P（MMA-AA-DVB）/Fe3O4） with strong magnetic domains and unique surface functionalities were prepared using a solvothermal process.The P（MMA-AA-DVB） nanoparticles were prepared via soapfree emulsion polymerization and used as a precursor for preparing Janus nanoparticles.The morphology and magnetic properties of the magnetic Janus nanoparticles formed were characterized using a laser particle size analyzer,transmission electron microscopy,Fourier transform infrared spectroscopy,vibrating sample magnetometry,and thermogravimetric analysis.The synthesized P（MMA-AA-DVB）/Fe3O4 magnetic Janus nanoparticles were characterized by a Janus structure and possessed a stable asymmetric morphology after being dually functionalized.The particle size,magnetic content,and magnetic domain of the P（MMA-AA-DVB）/Fe3O4 magnetic Janus nanoparticles were 200 nm,40%,and 25 emu/g,respectively.The formation mechanism of the Janus nanoparticles was also investigated,and the results revealed that the reduction of Fe3＋ ions and growth of Fe3O4 took place on the surface of the P（MMA-AA-DVB） polymeric precursor particles.The size of the Janus particles could be controlled by narrowing the size distribution of the P（MMA-AA-DVB） precursor nanoparticles.

关键词： Janus Magnetic nanoparticles solvothermal process Composite Emulsion polymerization

Noble Metal-Doped In_2O_3 for Enhancing Response to H_2

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稀有金属材料与工程 2006年第A3期35卷 136-139页

作者： Jiaqiang Xu Xiaohua Wang Jianian Shen College of Materials and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 China Institute of Materials Shanghai University Shanghai 200072 China

Nanocrystalline In_2O_3 was synthesized through a controllable solvothermal process in one-step at 210℃for 24 h. Gas sensing properties were tested by mixing gas in air in static state.At 268.5℃,the nanocrystal showed high sensitivity to LPG but lower sensitivity to H_2 and CO.In order to enhance the sensitivities to H_2 and CO,0.5 mass % Au and Pd were doped by an impregnation process.The sensitivities to H_2 and CO were increased under different working temperature.Au-doped In_2O_3 was superior to Pd-doped In_2O_3 whatever to H_2 or CO;the sensitivity was increased with the increase of working temperature;gas sensing properties to H_2 overmatched to CO.

关键词： solvothermal process indium oxide noble metal H2 sensor

Noble Metal-Doped In2O3 for Enhancing Response to H2

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稀有金属材料与工程 2006年第S3期 136-139页

作者： Jiaqiang Xu~(1,2) Xiaohua Wang~1 Jianian Shen~2 (1.College of Materials and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China) (2.Institute of Materials,Shanghai University,Shanghai 200072,China)

Nanocrystalline In2O3was synthesized through a controllable solvothermal process in one-step at 210℃for 24 h. Gas sensing properties were tested by mixing gas in air in static state.At 268.5℃,the nanocrystal showed high sensitivity to LPG but lower sensitivity to H2and CO.In order to enhance the sensitivities to H2and CO,0.5 mass % Au and Pd were doped by an impregnation process.The sensitivities to H2and CO were increased under different working temperature.Au-doped In2O3was superior to Pd-doped In2O3whatever to H2or CO;the sensitivity was increased with the increase of working temperature;gas sensing properties to H2overmatched to CO.

关键词： solvothermal process indium oxide noble metal H2 sensor

One-step solvothermal synthesis of indium oxide as liquefied petroleum gas sensor

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Journal of Shanghai University(English Edition) 2007年第4期11卷 407-410页

作者：徐甲强王晓华沈嘉年 College of Materials and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China Department of Chemistry College of SciencesShanghai University Shanghai 200444 P. R. China Institute of Materials Shanghai University Shanghai 200072 P. R. China

A liquefied petroleum gas （LPG） sensor with high selectivity, sensitivity and low power consumption has been developed based on indium oxide with very low resistance. Nanocrystalline In203 gas sensing materials were directly synthesized through a one-step controllable solvothermal process at 210 ℃ for 24 h, using InCI3.4H2O as the starting material, cetyltrimethyl ammonium bromide （CTAB） as additive and ethanol as the solvent. The obtained samples were characterized by X-ray diffraction （XRD）, and transmission electron microscopy （TEM）. The results showed that indium oxide takes on uniform cubic shape with range size of 10~30 nm and fine dispersivity. Gas sensitivity was measured in a mixing static gas. The results indicated that 3.0 V is the best working voltage of the sensor to LPG. Sensitivity is 12.6. The response-time and recovery-time are 3 s and 10 s respectively. Power consumption is only around 200 mW.

关键词： solvothermal process In203 gas sensor low power consumption liquefied petroleum gas （LPG）.

Nano LiFePO4/C controlled by surfactant as cathode materials for Li-ion batteries

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Nano LiFePO4/C controlled by surfactant as cathode materials...