Spectroscopic properties of nano-sized cerium-doped lutetium aluminum garnet phosphors via sol–gel combustion process

2007 ◽  
Vol 124 (1) ◽  
pp. 75-80 ◽  
Author(s):  
Xue-Jian Liu ◽  
Hui-Li Li ◽  
Rong-Jun Xie ◽  
Yi Zeng ◽  
Li-Ping Huang
Keyword(s):  
Sol Gel ◽  
Combustion Process ◽  
Spectroscopic Properties ◽  
Gel Combustion

Low temperature synthesis of ultrafine Pb(Zr, Ti)O3 powder by sol-gel combustion

1997 ◽  
Vol 12 (10) ◽  
pp. 2518-2521 ◽  
Author(s):  
J. Schäfer ◽  
W. Sigmund ◽  
S. Roy ◽  
F. Aldinger
Keyword(s):  
Lead Zirconate Titanate ◽  
Single Phase ◽  
Sol Gel ◽  
Combustion Process ◽  
Lead Zirconate ◽  
Homogeneous Distribution ◽  
Low Temperature Synthesis ◽  
Metal Nitrates ◽  
Gel Combustion ◽  
Diffusion Paths

Lead zirconate titanate powders are derived from a novel aqueous-based citrate-nitrate/oxynitrate sol-gel combustion process. Aqueous solutions of metal nitrates or oxynitrates are transformed into gels with citric acid under heating. The received gels undergo a self-propagating combustion reaction on heating to 180 °C and subsequently yield voluminous ashes. These ashes form single phase perovskite Pb(Zr0.53Ti0.47)O3 powder with a specific surface area of 8 m2/g upon calcination at 550 °C. The ashes show a homogeneous distribution of lead, zirconium, and titanium ions which guarantees short diffusion paths in solid state formation of PZT perovskite. The redox behavior of the gels was studied with the help of DTA experiments. Powders are characterized in terms of XRD, SEM, and EDX analysis.

Synthesis of Ultrafine MgAl2O4 Powders by Nitrate-Citrate Sol-Gel Combustion Process

2008 ◽  
Vol 368-372 ◽  
pp. 407-408
Author(s):  
Long Chen ◽  
Qi Zhang ◽  
Wen Ping Chen ◽  
Yao Gang Li ◽  
Yan Mo Chen ◽  
...  
Keyword(s):  
Sol Gel ◽  
Combustion Process ◽  
Xrd Analysis ◽  
Transmission Electron Microscopy Image ◽  
Solid State Reactions ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Microscopy Image ◽  
Gel Combustion ◽  
Lower Temperature

Ultrafine MgAl2O4 powders were synthesized by a nitrate-citrate sol-gel combustion process using Al(NO3)3·9H2O, Mg(NO3)2·6H2O and C6H8O7·H2O as initial materials. The result of X-ray diffraction (XRD) analysis indicated that single-phase MgAl2O4 powder could be obtained at 850 oC, which is much lower than that needed in solid-state reactions. Transmission electron microscopy image showed that the as-prepared powder was in the nano scale and little agglomerate exited. It is concluded that this process need shorter time, lower temperature, and simple equipments.

scholarly journals Spectroscopic and Magnetic performance of Cobalt (Co) Incorporated NiMn0.05Fe1.95O4 Nanoferrites: A potent antifungal activity against Aspergillus niger (MT675916).

2021 ◽  
Author(s):  
Sapna Thakur ◽  
Geetika Guleria ◽  
Shweta Thakur ◽  
Sushma Sharma ◽  
Poonam Kumari
Keyword(s):  
Antifungal Activity ◽  
Aspergillus Niger ◽  
Sol Gel ◽  
Combustion Process ◽  
Chelating Agent ◽  
Pathogenic Fungi ◽  
Lattice Parameter ◽  
Spectra Analysis ◽  
Gel Combustion ◽  
The Impact

Abstract We investigated the impact of cobalt (Co) incorporation on the structural, optical, and magnetic properties of ferrite Ni1 − xCoxMn0.05Fe1.95O4, also known as NCMF for x = 0, 0.02, and 0.04, which were successfully synthesized using a low-temperature sol gel combustion process with nitrates as cations and citric acid (C6H8O7) as the combustion/chelating agent. In X-ray diffraction studies, cobalt incorporation resulted in a significant increase in lattice parameter from 8.31 to 8.36, as well as a significant increase in density from 5.42 to 5.52 g/cm3; crystal size formation was observed in the range of 44.76 nm to 48.54 nm for all samples. Raman spectra analysis confirmed that single phase belongs to the Fd3m space group. Fourier transform infrared (FTIR) spectra were used to identify functional clusters and residual groups in all samples. UV-visible spectroscopy showed a redshift of 0.92 eV for x = 0.04. The effect of dopants on nickel ferrites' magnetization was observed in the range 52emu/g − 59emu/g, indicating that all samples contain soft magnetic content. Antifungal activity of synthesized sample was analyzed against Aspergillus niger (MT675916) species of plant pathogenic fungi isolated from Capsicum during storage. Biological analysis designated that the sample for x = 0.04 has shown a 100% potent antifungal activity against Aspergillus niger (MT675916) species. For x = 0.04 treatment completely inhibit the growth of fungus after 7 days. Therefore, NCMF NPs can be used as applicant resources for industrial, medical, and biological applications.

Performance Enhancement of ZITO Thin-Film Transistors via Graphene Bridge Layer by Sol–Gel Combustion Process

2015 ◽  
Vol 7 (43) ◽  
pp. 24103-24109 ◽  
Author(s):  
Jianhua Zhang ◽  
Panpan Dong ◽  
Yana Gao ◽  
Chenhang Sheng ◽  
Xifeng Li
Keyword(s):  
Thin Film ◽  
Thin Film Transistors ◽  
Performance Enhancement ◽  
Sol Gel ◽  
Combustion Process ◽  
Gel Combustion

scholarly journals Luminescence properties and energy transfer of Tb3+, Eu3+ co-doped YTaO4 phosphors obtained via sol–gel combustion process

2020 ◽  
Vol 31 (16) ◽  
pp. 13688-13695
Author(s):  
Shangrui Nan ◽  
Feng Hong ◽  
Haiping Xu ◽  
Jingzhi Dou ◽  
Guixia Liu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Sol Gel ◽  
Combustion Process ◽  
Luminescence Properties ◽  
Gel Combustion ◽  
Co Doped
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