Impacts of in situ carbon coating on the structural, morphological and electrochemical characteristics of Li2MnSiO4 prepared by a citric acid assisted sol–gel method

2013 ◽  
Vol 689 ◽  
pp. 88-95 ◽  
Author(s):  
S. Zhang ◽  
C. Deng ◽  
F.L. Liu ◽  
Q. Wu ◽  
M. Zhang ◽  
...  
Keyword(s):  
Citric Acid ◽  
Carbon Coating ◽  
Sol Gel ◽  
Electrochemical Characteristics ◽  
Gel Method ◽  
Sol Gel Method

Role of different coordinated Cu and reactive oxygen species on the highly active Cu–Ce–Zr mixed oxides in NH3-SCO: a combined in situ EPR and O2-TPD approach

2016 ◽  
Vol 6 (12) ◽  
pp. 4491-4502 ◽  
Author(s):  
Zhenping Qu ◽  
Zhong Wang ◽  
Xiaoyu Zhang ◽  
Hui Wang
Keyword(s):  
Reactive Oxygen Species ◽  
Citric Acid ◽  
Mixed Oxides ◽  
Sol Gel ◽  
Oxygen Species ◽  
Gel Method ◽  
Sol Gel Method ◽  
Highly Active

Novel Cu–Ce–Zr mixed oxides were synthesized by a citric acid sol–gel method, and they exhibited an excellent NH3-SCO activity (180 °C, TOF = 1.33 h−1).

KNN-BF Lead-Free Piezoelectric Ceramics Synthesized by Sol-Gel Method

2015 ◽  
Vol 740 ◽  
pp. 3-6
Author(s):  
Guo Yuan Cheng ◽  
Xing Hua Fu ◽  
Xin Jin ◽  
Wen Hong Tao ◽  
Yu Qin Qiang
Keyword(s):  
Comparative Analysis ◽  
Citric Acid ◽  
Dielectric Loss ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Gel Method ◽  
Sol Gel Method ◽  
Metal Chelator

KNN-BF piezoelectric ceramics synthesized by sol-gel method in this experiment. By controlling bismuth and iron content in the system to study effects of them. We selected citric acid as metal chelator and ethylene glycol as esterification agent. PH maintained 5-6 during preparation of the sol. Sintering temperature of ceramic selected 1100°C. Preparation ceramics under these conditions and comparative analysis, the structure of ceramics is single perovskite and shap of crystals are square block. With the increase of x, properties of ceramics firstly increases and then decreases: d33, εr, Qm, Kpreaching the maximum, values of them were 136pC/N, 630(f =1KHz), 212, 0.41 respectively; dielectric loss to minimum is 0.07(f =1KHz); at this point, ceramics had best performance.

scholarly journals Preparation and stress-strain behavior of in-situ epoxidized natural rubber/SiO2 hybrid through a sol-gel method

2018 ◽  
Vol 12 (2) ◽  
pp. 180-185 ◽  
Author(s):  
S. M. Li ◽  
T. W. Xu ◽  
Z. X. Jia ◽  
B. C. Zhong ◽  
Y. F. Luo ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Sol Gel ◽  
Epoxidized Natural Rubber ◽  
Stress Strain ◽  
Gel Method ◽  
Sol Gel Method ◽  
Strain Behavior

Preparation of amphiphilic nano-sized NaA/glass films and powders using layer-by-layer in-situ sol–gel method

2015 ◽  
Vol 213 ◽  
pp. 1-7 ◽  
Author(s):  
Fei Tong ◽  
Jie Gong ◽  
Ming Li ◽  
Changfeng Zeng ◽  
Lixiong Zhang
Keyword(s):  
Sol Gel ◽  
Layer By Layer ◽  
Gel Method ◽  
Sol Gel Method ◽  
Glass Films

In Situ Synthesis of SiO2 Nanoparticles by Sol-Gel Method on Cotton Fabrics and Investigation of their Physical and Chemical Properties

2021 ◽  
Vol 891 ◽  
pp. 37-42
Author(s):  
Sheila Shahidi ◽  
Hakimeh Mohammadbagherloo ◽  
Seyedmohammad Elahi ◽  
Sanaz Dalalsharifi ◽  
Rattanaphol Mongkholrattanasit
Keyword(s):  
Flame Retardant ◽  
Water Drop ◽  
Sol Gel ◽  
Cotton Fabrics ◽  
In Situ Synthesis ◽  
Order Structure ◽  
Gel Method ◽  
Sol Gel Method ◽  
Flame Retardant Properties

In this paper, the sol-gel method was used for in-situ synthesis of SiO2 nanoparticles (NPs) on cotton fabrics with tetraethyl orthosilicate (TEOS) in the presence of acid and alkaline indicators. The samples were characterized using by (X-ray diffraction) XRD, (scanning electron Microscopy) SEM, (Inductively coupled plasma) ICP, water drop test and also the flame retardant properties were studied by char yield. The SEM images showed that the nanoparticles are spherical in shape and the acidity or alkalinity of the medium has an effect on the formation of particles. The XRD patterns showed the typical diffraction of amorphous SiO2 (Si-O short-order structure), also ICP analysis showed that by washing the fabrics, the nanoparticles are still present on the fabric, and this indicated the stability of the washing of the fabrics impregnated with the nanoparticles. By in-situ synthesis of SiO2 nanoparticles, the flame retardant properties have been improved significantly and the amount of residual char was increased and samples were observed to be hydrophilic.

Study on the Synthesis of Batches of the System Y-Ba-Cu-O Using Sol-Gel Method

2014 ◽  
Vol 91 ◽  
pp. 19-23
Author(s):  
Plamen Pashev ◽  
Rositsa Raykova ◽  
Yancho Hristov ◽  
Bogdan Bogdanov
Keyword(s):  
Particle Size ◽  
Citric Acid ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Blue Solution ◽  
Transformation Processes ◽  
Nitrate Solutions ◽  
Thermally Treated

The study presented deal with preparation of batches of the system Y-Ba-Cu-O using sol-gel method and citric acid as precursor. Batches with particle size of 100 nm containing each of the phases Y123 and Y211 were prepared. The stoichiometric amounts of Y, Ba and Cu oxides were dissolved in 65% HNO3 until clear blue solution was observed under heating to 80 ̊С. The nitrate solutions obtained were neutralized to pH = 6 with 25% solution of NH3 (p.a.), then С6Н8О7 was added as the gels obtained were thermally treated. The transformation processes taking place under change of temperature were studied by IR, XRD, DTA and SEM.

UV-curable fluorine-containing hybrid coatings via thiol-ene “click” reaction and an in situ sol–gel method

2012 ◽  
Vol 70 (3) ◽  
pp. 1037-1048 ◽  
Author(s):  
Emrah Çakmakçı ◽  
Yusuf Mülazim ◽  
Memet Vezir Kahraman
Keyword(s):  
Click Reaction ◽  
Sol Gel ◽  
Hybrid Coatings ◽  
Uv Curable ◽  
Gel Method ◽  
Sol Gel Method
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