Results 121 to 130 of about 184,318 (161)

Preparation of BaTiO3 by the hydrothermal method

Journal of the European Ceramic Society, 1995
Abstract The results of hydrothermal preparation of BaTiO3 fine powders are reported. The effects of the reaction temperature, the molar ratio of Ba Ti in the precursors, the chemical form of the precursors on the phase composition, the size and the morphology of the products are presented.
Chang-Tai Xia, Er-Wei Shi, Wei-Zhuo Zhong, Jing-Kun Guo   +3 more
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Synthesis of Na0.5Bi0.5TiO3 powders through hydrothermal method

Journal of Alloys and Compounds, 2010
Abstract Na0.5Bi0.5TiO3 (NBT) powders were successfully prepared by the hydrothermal method using TiCl4 and Bi(NO3)3·5H2O as raw materials and NaOH as mineralizer. The phase composition and particle morphology of the as-prepared powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron ...
Tonglei Lu, Jinhui Dai, Jintao Tian, Wenwen Song, Xizhong Liu, Lin Lai, Huijuan Chu, Xiang Huang, Xiaoyun Liu   +8 more
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CuS nanostructures prepared by a hydrothermal method

Journal of Alloys and Compounds, 2011
Abstract Without using any surfactant or template, novel CuS three-dimensional (3D) structures consisting of nanosheets were successfully synthesized via a convenient one-step hydrothermal approach. X-ray diffraction pattern showed that the as-prepared product was pure hexagonal phase CuS. Scanning electron microscopy and high-resolution transmission
Qing-Li Huang, Hu Chen, Yong Cai Zhang, Chang Le Wu   +3 more
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Cerium doped NiO nanoparticles by hydrothermal method

AIP Conference Proceedings, 2020
Pure and cerium doped nickel oxide nanoparticles were prepared by hydrothermal method. Structural, optical, and morphological properties were studied by employing XRD, Raman, PL, and SEM analyses. The information about the functional group and chemical structure of the prepared sample was analyzed through FTIR.
M. Isacfranklin, G. Ravi, R. Yuvakkumar, P. Kumar, Dhayalan Velauthapillai, B. Saravanakumar, E. Sunil Babu   +6 more
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Nanostructured AgPb18SbS20 compound synthesized by hydrothermal method

Materials Letters, 2013
Abstract Nanostructured AgPb 18 SbS 20 thermoelectric powders have been successfully synthesized by hydrothermal method. X-ray diffraction (XRD) and transmission electron microscopy (TEM) were respectively used for characterization of the powders. The mean size of the powders synthesized at 180 °C for 48 h is about 300 nm.
Youmo Zhou, Taichao Su, Hongtao Li, Shangsheng Li, Meihua Hu, Xiaodong Wang, Hongan Ma, Xiaopeng Jia   +7 more
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Obtaining aluminosilicate refractories by the hydrothermal method

Refractories, 1967
On the basis of aluminosilicate bond made from heat-processed hydrated alumina and quartz sand in the molecular ratio of Al2O3: SiO2=3∩2, in conditions of autoclave processing at 800–1000 kg/cm2 in a period of 8–12 h, it is possible to obtain unfired aluminosilicate refractories with quite high physico-chemical factors.
E. I. Ved', Ya. G. Belik, Z. S. Litvinova   +2 more
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Preparation of Titanate Nanotubes by Hydrothermal Method

Materials Science Forum, 2009
Titanate nanotubes have been directly prepared by hydrothermally treating P25 powders in NaOH aqueous solution. Effect of calcination temperature on crystal phase, morphologies and specific surface area of the as-synthesized nanotubes has been investigated in detail. The Na2Ti3O7 tubular structure could be kept well even after calcination at 600 °C and
Dan Ni Yu, Wen Xiu Liu, Jing Ma, Xiao Guang Qu, Wen Bin Cao, Zhong Ying Zhang, Jing Hong Mao   +6 more
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Synthesis of Zirconium Tungstate by Hydrothermal Method

Advanced Materials Research, 2011
Negative thermal expansion material ZrW2O8 was synthesized by hydrothermal method. The prepared ZrW2O8 and the precursor were characterized by x-ray diffractometer, thermo-gravimetric/differential thermal analyzer, FT-IR spectrometer and scanning electron microscope.
Li Yun Zheng, Zhi Wei Yang
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Synthesis of gadolinium silicate by hydrothermal method

AIP Conference Proceedings, 2013
A simple method based on hydrothermal synthesis of materials to prepare gadolinium silicate has been prescribed. It is found that molar ratio of Gd(NO3)3: TEOS plays a crucial role in the formation of Gd2SiO5. The effect of calcinations, concentration of the precipitating agent and dopant atoms on composition and morphology of the synthesized materials
Seema Shinde, M. Ghosh, Shashwati Sen, S. G. Singh, S. C. Gadkari, S. K. Gupta   +5 more
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Evolutionary optimisation method for multistorage hydrothermal scheduling

IEE Proceedings - Generation, Transmission and Distribution, 2002
An evolutionary method is proposed for minimising the operational cost in the scheduling of hydrothermal systems with multiple storage. The method combines the advantages of constructive dynamic programming and evolutionary programming. Instead of evolving the primal variables such as water releases and thermal generator outputs, it evolves the ...
T.D.H. Cau, R.J. Kaye
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