scholarly journals Effect of calcination temperature and calcination time on the kaolinite/tio2 composite for photocatalytic reduction of CO2

2012 ◽  
Vol 58 (4) ◽  
pp. 10-22 ◽  
Author(s):  
Martin Reli ◽  
Kamila Kočí ◽  
Vlastimil Matějka ◽  
Pavel Kovář ◽  
Lucie Obalová
Keyword(s):  
Crystallite Size ◽  
Physical Adsorption ◽  
Photocatalytic Reduction ◽  
Thermal Hydrolysis ◽  
Calcination Time ◽  
Different Temperatures ◽  
Higher Temperature ◽  
Titanyl Sulphate ◽  
Reduction Of Co2 ◽  
Hydrolysis Of

Abstract The kaolinite/TiO2 composite (60 wt% of TiO2) was prepared by thermal hydrolysis of a raw kaolin suspension in titanyl sulphate and calcined at different temperatures (600, 650 and 700°C) and for different times (1, 2 and 3 h). The obtained samples were characterized by XRPD, N2 physical adsorption and SEM, and tested for photocatalytic reduction of CO2. The different calcination conditions did not influence TiO2 phase composition, only slightly changed the specific surface area, and significantly affected crystallite size of kaolinite/TiO2 composite. A higher temperature and longer duration of calcination lead to higher crystallinity of the powder. The photocatalytic results showed that the crystallite size determined the efficiency of kaolinite/TiO2 photocatalysts.

scholarly journals The effect of drying temperature on the properties of gelatin from carps (Cyprinus carpio) skin

2019 ◽  
Vol 37 (No. 4) ◽  
pp. 246-251 ◽  
Author(s):  
Joanna Tkaczewska ◽  
Maciej Wielgosz ◽  
Piotr Kulawik ◽  
Marzena Zajac
Keyword(s):  
Cyprinus Carpio ◽  
Freeze Drying ◽  
Treatment Method ◽  
Thermal Hydrolysis ◽  
Gel Properties ◽  
Drying Temperature ◽  
Freeze Dried ◽  
Different Temperatures ◽  
Pre Treatment ◽  
Hydrolysis Of

The influence of drying temperature on the characteristics and gel properties of gelatine from Cyprinus carpio L. skin was studied. Gelatine was extracted from the carp skin using NaOH and ethanol pre-treatment method, extracted in water in 45°C and then dried in 4 different temperatures: 50, 70, 80°C and freeze-dried. The  electrophoresis and functional properties of gelatines were investigated. Freeze drying allowed to obtain a high gelling force, and all other methods did not give satisfactory results. The proteins in gelatines dried at higher temperatures separated by electrophoresis gave severely blurred bands. It may be explained by thermal hydrolysis of collagen fibrils. Freeze drying is the only effective method for drying this product, which can be used in industry.

Synergistic effect of phosphomolybdic acid on rhodium-based metal-organic frameworks for the efficient selective photocatalytic reduction of CO2 to CO

2021 ◽  
Author(s):  
Yurong Shan ◽  
Dexiang Liu ◽  
Chunyan Xu ◽  
Peng Zhan ◽  
Hui Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Electronic Structure ◽  
Synergistic Effect ◽  
Metal Organic Frameworks ◽  
Phosphomolybdic Acid ◽  
Photocatalytic Reduction ◽  
Structure And Morphology ◽  
Spherical Structure ◽  
Metal Organic ◽  
Reduction Of Co2

In this work, PMA@NH2-MIL-68(Rh) with a mangosteen spherical structure was successfully synthesized by a hydrothermal method for the photocatalytic reduction of carbon dioxide. The electronic structure and morphology of the...

Fe-MIL tuned and bound with Bi4O5Br2 for boosting photocatalytic reduction of CO2 to CH4 under simulated sunlight

2021 ◽  
Author(s):  
Xiaoli Li ◽  
Yuan Tang ◽  
Yue Jiang ◽  
Manman Mu ◽  
Xiaohong Yin
Keyword(s):  
Environmental Pollution ◽  
Photocatalytic Reduction ◽  
Simulated Sunlight ◽  
Innovative Material ◽  
Reduction Of Co2

The innovative material synthesized in this experiment can reduce CO2 to methane under simulated sunlight, solving environmental pollution and energy problems.

In-vacancy engineered plate-like In(OH)3 for effective photocatalytic reduction of CO2 with H2O vapor

2019 ◽  
Vol 253 ◽  
pp. 77-87 ◽  
Author(s):  
Bingbing Hu ◽  
Maocong Hu ◽  
Qiang Guo ◽  
Kang Wang ◽  
Xitao Wang
Keyword(s):  
Photocatalytic Reduction ◽  
Reduction Of Co2

Revisiting Pt/TiO2 photocatalysts for thermally assisted photocatalytic reduction of CO2

Nanoscale ◽  
2020 ◽  
Vol 12 (13) ◽  
pp. 7000-7010 ◽  
Author(s):  
Fei Yu ◽  
Changhua Wang ◽  
He Ma ◽  
Miao Song ◽  
Dongsheng Li ◽  
...  
Keyword(s):  
Pt Nanoparticles ◽  
Photocatalytic Reduction ◽  
Tio2 Photocatalysts ◽  
Reduction Of Co2

Ultrasonic disordering of a TiO2 surface results in smaller Pt nanoparticles and promotes the thermally assisted photocatalytic reduction of CO2, yielding higher CH4 selectivity.

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