Fabrication of Bi-2223 Powders Using Sol-Gel Method

The Bi-2223 powders were fabricated by the sol-gel technique. Metal nitrates were used as starting materials, and ethylenediamineteracetic acid was used as chelating agent. The solution was heated until it turns to gel. Then the organic was removed at a temperature of 240°C, and the nitrite was removed at 500°C. The powder was calcined at different temperature, varying the dwelling time. Experimental results show that the main phase of samples after heat treatment is Bi-2212 phase.

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Optimization of Experimental Parameters to the Formation of Bi2212 Phase via Sol-Gel Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.328-330.1499 ◽

2011 ◽

Vol 328-330 ◽

pp. 1499-1502

Author(s):

Hua Zhe Yang ◽

Ye Song He ◽

Yang Ji ◽

Zi Mu Li ◽

Hao Zhu

Keyword(s):

Sol Gel ◽

Precursor Solution ◽

Chelating Agent ◽

Solution Concentration ◽

Treatment Temperature ◽

Gel Method ◽

Sol Gel Method ◽

Metal Nitrates ◽

Water As Solvent ◽

Experimental Parameters

Bi-2212 superconducting phase was synthesized via sol-gel method, and the experimental parameters such as the concentration of precursor solution and heat treatment temperature were adjusted to find the optimal conditions. Metal nitrates were adopted as the starting materials and ethylenediaminetetracetic acid (EDTA) as chelating agent. Precursor solutions and gel with different concentration were obtained through the addition of different content of distilled water as solvent followed by heating at certain temperature to form grey powders. Afterwards, the powders were sintered at different temperature for 10 hours, respectively. X-ray diffraction (XRD) was adopted to investigate the phase purity and crystallinity of the sample derived. Results reveal that the optimized precursor solution concentration is 27% and the optimized sintering temperature is 850°C.

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Preparation of La0.75Sr0.25Cr0.5Mn0.5O3-δ Nanometer Powders by Sol-Gel Method and Research about its Electrochemical Performance

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.712-715.257 ◽

2013 ◽

Vol 712-715 ◽

pp. 257-261

Author(s):

Yin Lin Wu ◽

Qing Hui Wang ◽

Ling Wang ◽

Hai Yan Zhao

Keyword(s):

Heat Treatment ◽

Particle Size ◽

Electrochemical Performance ◽

Heat Treatment Temperature ◽

Sol Gel ◽

Treatment Temperature ◽

Preparation Process ◽

Gel Method ◽

Sol Gel Method ◽

Ft Ir

The La0.75Sr0.25Cr0.5Mn0.5O3-δnanometer powders were prepared by citric acid sol-gel method.The samples were characterized by DTA, FT-IR, XRD, TEM techniques. The preparation process, morphology of synthesized powders, the best heat-treatment temperature and the electrochemical performance had been studied. The results show that the spherical nanometer powders can be obtained and the best heat-treatment temperature is 800°C. The particle size is about 30nm and Ea is 0.071 eV.

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Synthesis and characterization of macroporous europium-doped Ca12Al14O33 (C12A7:Eu3+) and its application in metal ion detection

New Journal of Chemistry ◽

10.1039/c9nj01265f ◽

2019 ◽

Vol 43 (21) ◽

pp. 8315-8324

Author(s):

Hui Yang ◽

Rui Wang ◽

Yaozu Wang ◽

Jianzhong Jiang ◽

Xingzhong Guo

Keyword(s):

Heat Treatment ◽

Metal Ion ◽

Sol Gel ◽

Synthesis And Characterization ◽

Practical Application ◽

Ion Detection ◽

Gel Method ◽

Sol Gel Method ◽

Metal Ion Detection

Macroporous europium-doped Ca12Al14O33 (C12A7:Eu3+) was prepared via a sol–gel method followed by heat-treatment, and the resultant macroporous C12A7:Eu3+ shows potential for practical application in metal ion detection and has a good response to Pb2+ ions.

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Synthesis, structural, magnetic and electrochemical properties of LiNi1/3Mn1/3Co1/3O2 prepared by a sol–gel method using table sugar as chelating agent

Electrochimica Acta ◽

10.1016/j.electacta.2013.09.065 ◽

2013 ◽

Vol 113 ◽

pp. 313-321 ◽

Cited By ~ 37

Author(s):

Nilüfer Kızıltaş-Yavuz ◽

Markus Herklotz ◽

Ahmed M. Hashem ◽

Hanaa M. Abuzeid ◽

Björn Schwarz ◽

...

Keyword(s):

Electrochemical Properties ◽

Sol Gel ◽

Chelating Agent ◽

Gel Method ◽

Sol Gel Method

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Effects of cooling rate and post-heat treatment on properties of ZnO thin films deposited by sol–gel method

Applied Surface Science ◽

10.1016/j.apsusc.2011.05.092 ◽

2011 ◽

Vol 257 (21) ◽

pp. 9019-9023 ◽

Cited By ~ 25

Author(s):

Min Su Kim ◽

Kwang Gug Yim ◽

Dong-Yul Lee ◽

Jin Soo Kim ◽

Jong Su Kim ◽

...

Keyword(s):

Thin Films ◽

Heat Treatment ◽

Cooling Rate ◽

Sol Gel ◽

Zno Thin Films ◽

Post Heat Treatment ◽

Gel Method ◽

Sol Gel Method

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The Process of Sol-Gel Method Prepared Bi-2212 Superconductors Tapes

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.275-277.2300 ◽

2013 ◽

Vol 275-277 ◽

pp. 2300-2303

Author(s):

Gen Zong Song ◽

Duo Zhang

Keyword(s):

Heat Treatment ◽

Sol Gel ◽

X Ray Diffraction ◽

Gel Method ◽

X Ray ◽

Sol Gel Method ◽

Ni Substrate ◽

Treatment Conditions ◽

Drying Conditions ◽

And Control

In this dissertation, Bi-2212 superconducting tapes was prepared by sol-gel method, in addition we mainly studied heat treatment conditions and sintering material drying conditions of the NiO/Ni substrate, and gived a optimization to the process. The heat treatment process of the NiO/Ni substrate had been researched.Based on previous experience, we explored the temperature of heat treatment and improved the process.Afterheattreatment,the samples was analyzed by metallographic microscope and X-ray diffraction,and we analysed these data. It’s concluded that the dense uniform oxide film can be sintered in 800°C with a 3 hours’ heat treatment.We further explored the conditions of the Bi-2212 superconducting materials.During the preparation. We mainly studied the drying temperature and sintering temperature ,because they would affect the gel phase transition and control components. It has a very important effect on high-quality superconducting strip preparation. Experiments results showed that drying the sample at 510 °C in temperature is best. all the samples was analyzed by X-ray diffraction. We summed up the data derived from experiments , it showed that sintering the sample at 850°C,we can obtain the mixed phase of Bi-2201 and Bi-2212.

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Structural and Optical Properties of Nickel-Doped and Undoped Zinc Oxide Thin Films Deposited by Sol-Gel Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.895.250 ◽

2014 ◽

Vol 895 ◽

pp. 250-253 ◽

Cited By ~ 2

Author(s):

Siti Hajar Basri ◽

Mohd Arif Mohd Sarjidan ◽

Wan Haliza Abd Majid

Keyword(s):

Thin Films ◽

Zinc Acetate ◽

Zinc Acetate Dihydrate ◽

Sol Gel ◽

Chelating Agent ◽

Zno Films ◽

Ni Doping ◽

Gel Method ◽

Sol Gel Method ◽

Glass Substrates

ZnO thin films with and without Ni-doping were successfully deposited by sol-gel method with zinc acetate dihydrate as inorganic precursor, and nickel (II) acetate tetrahydrate as dopant. The solutions were prepared by dissolving zinc acetate and nickel (II) acetate in ethanol and diethanolamine (DEA) as its chelating agent. Thin films were fabricated by using spin-coating method on glass substrates. ZnO films were obtained by pre-heating and post-heating at 300 °C for 10 minutes and 500 °C for 1 h respectively. The films were analyzed by X-ray diffraction (XRD), UV-Vis transmittance and photoluminescence (PL). All samples exhibit high transparency in visible. Ni dopant does not alter so much ZnO structure, which due to the ion substitution between Ni and Zn. However, the Ni tends to create a dopant energy interlayer in ZnO energy band gap which cause significant change in PL intensity.

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