Photocatalytic Property of Eu/BiVO4 Photocatalyst by Citric Acid Sol-Gel Method

2013 ◽  
Vol 28 (2) ◽  
pp. 153-158 ◽  
Author(s):  
Min WANG ◽  
Qiong LIU ◽  
Ya-Jie SUN ◽  
Yin-Sheng CHE ◽  
Chen-Zhi JIANG
Keyword(s):  
Citric Acid ◽  
Sol Gel ◽  
Photocatalytic Property ◽  
Gel Method ◽  
Sol Gel Method

Synthesis and Photocatalytic Property of FeVO4 Photocatalyst by Sol-Gel Method

2011 ◽  
Vol 328-330 ◽  
pp. 1507-1511 ◽  
Author(s):  
Min Wang ◽  
Li Fang Zhang ◽  
Hai Yan Luan
Keyword(s):  
Photocatalytic Activity ◽  
Citric Acid ◽  
Sol Gel ◽  
Photocatalytic Property ◽  
Molar Ratio ◽  
Halogen Lamp ◽  
Experimental Conditions ◽  
Gel Method ◽  
Sol Gel Method ◽  
Photodegradation Rate

FeVO4 photocatalysts were synthesized by complexing Sol-Gel method using citric acid as chelate and characterized with X-ray diffraction (XRD), scanning electron microsoope(SEM, specific surface area (BET). The photocatalytic activity was evaluated by photocatalytic degradation of methyl orange (MO) solution under visible light. It was found that the sample prepared with the molar ratio of citric acid to metal inons be 2:1, pH=7 and calcinated under 750°C for 4 hours was pure triclinic FeVO4 phase. In the experimental conditions used, the FeVO4 calcined at 750°C had highest photocatalytic activity with the photodegradation rate was about 85% or so in 150min under 250W halogen lamp.

Synthesis and Photocatalytic Property of N-doped BiVO$lt;inf$gt;4$lt;/inf$gt; via Sol-Gel Method Using Corn Stem as Template

2014 ◽  
Vol 29 (8) ◽  
pp. 807
Author(s):  
WANG Min ◽  
NIU Chao ◽  
DONG Zhan-Jun ◽  
CHE Yin-Sheng ◽  
DONG Duo ◽  
...  
Keyword(s):  
Sol Gel ◽  
Photocatalytic Property ◽  
Gel Method ◽  
Sol Gel Method

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.

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.

Effect of the annealing temperature and of Bi substitution on the structural and magnetic behaviors of double-doping (Bi/La, Ca) (La0.8Ca0.2)1−xBixFeO3 compounds

2020 ◽  
Vol 44 (23) ◽  
pp. 9813-9821
Author(s):  
H. Issaoui ◽  
A. Benali ◽  
M. Bejar ◽  
E. Dhahri ◽  
R. F. Santos ◽  
...  
Keyword(s):  
Citric Acid ◽  
Curie Temperature ◽  
Annealing Temperature ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Double Doping

Perovskite (La0.8Ca0.2)1−xBixFeO3 compounds were synthesized by sol–gel method using the citric acid route and sintered at 800 °C and 900 °C. LCBFO 800 series has the smallest size of crystallites, a larger magnetization and a smaller Curie temperature.

Nickel oxide aerogel for high performance supercapacitor electrodes

RSC Advances ◽  
2016 ◽  
Vol 6 (113) ◽  
pp. 112620-112624 ◽  
Author(s):  
Zhiyi Zhang ◽  
Qiuyue Gao ◽  
Haibo Gao ◽  
Zhenyu Shi ◽  
Junwei Wu ◽  
...  
Keyword(s):  
Citric Acid ◽  
Nickel Oxide ◽  
High Performance ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

Monolithic NiO aerogels were prepared by a facile citric acid assisted sol–gel method for supercapacitor electrodes.

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