scholarly journals Effect of the pH Value of Synthesis Conditions on the Phase Structure and Photocatalytic Properties of Bismuth Molybdates Synthesized Using a Hydrothermal Method

10.5772/61294 ◽  
2015 ◽  
Vol 5 ◽  
pp. 24 ◽  
Author(s):  
Wenfeng Guo ◽  
Heping Li ◽  
Weixiu Teng ◽  
Linfan Cui ◽  
Tifeng Jiao
Keyword(s):  
Hydrothermal Method ◽  
Phase Structure ◽  
Ph Value ◽  
Photocatalytic Properties ◽  
Synthesis Conditions ◽  
Bismuth Molybdates

scholarly journals Investigation into the synthesis conditions of CuMoO4 by an in situ method and its photocatalytic properties under visible light irradiation

RSC Advances ◽  
2020 ◽  
Vol 10 (16) ◽  
pp. 9745-9759 ◽  
Author(s):  
Wencheng Tan ◽  
Jingfei Luan
Keyword(s):  
Visible Light ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Photocatalytic Properties ◽  
Copper Compound ◽  
Synthesis Conditions ◽  
In Situ Method

A kind of molybdenum and copper compound, CuMoO4, was prepared by a hydrothermal method.

β-Ni(OH)2 Flower-Like Spheres and Nanoflakes Synthesized Using the Hydrothermal Method and its Formation Mechanism

2011 ◽  
Vol 306-307 ◽  
pp. 1430-1434
Author(s):  
Xiao Ming Fu ◽  
Zhao Wen Liu ◽  
Liang Yi Zhou ◽  
Chen Chen Xie
Keyword(s):  
High Temperature ◽  
Reaction Time ◽  
Low Temperature ◽  
Hydrothermal Method ◽  
Formation Mechanism ◽  
Phase Structure ◽  
Ph Value ◽  
Nickel Nitrate ◽  
Ammonia Water

β-Ni(OH)2 flower-like spheres and nanoflakes were synthesized with strong ammonia water as precipitator and nickel nitrate as nickel source by the hydrothermal method. The phase structure and morphologies were analyzed using XRD and SEM. The results showed that under the same conditions of the pH value and the reaction time, the low temperature was propitious to synthesize β-Ni(OH)2 flower-like spheres. High temperature was in favor of the synthesis of β-Ni(OH)2 nanoflakes. Namely, β-Ni(OH)2 flower-like spheres were obtained at 180 °C for 48.0 h with pH=9.0. β-Ni(OH)2 nanoflakes were prepared at 240 °C for 48.0 h with pH=9.0. The formation mechanism was explored through observing influence of the conditions of the hydrothermal method on the morphologies of the samples.

Influence of pH Value on the Performance of Composite Films Prepared from Chromium Residue by Hydrothermal Method

2013 ◽  
Vol 28 (4) ◽  
pp. 387-392
Author(s):  
Tong SUN ◽  
Lian-Li LIU ◽  
Shu-Ying XU ◽  
Xiao-Lin PENG ◽  
Hai-Long YANG
Keyword(s):  
Hydrothermal Method ◽  
Ph Value ◽  
Composite Films ◽  
Influence Of Ph

The Composite of CuO/Diatomaceous Shale Prepared by Hydrothermal Method and Their Photocatalytic Properties

2019 ◽  
Vol 55 (1) ◽  
pp. 1900166
Author(s):  
Ziyi Wang ◽  
Binhua Cao ◽  
Zhijun Wang ◽  
Qiao Chen ◽  
Yongqian Wang
Keyword(s):  
Hydrothermal Method ◽  
Photocatalytic Properties

Preparation of TiO2 (Au) Nanotubes by Hydrothermal Method for Photocatalytic Reduction of Cd2+ Ions

2014 ◽  
Vol 609-610 ◽  
pp. 375-381
Author(s):  
Chun Xiao Feng ◽  
Guang Qing Xu ◽  
Jun Lv ◽  
Zhi Xiang Zheng ◽  
Yu Cheng Wu
Keyword(s):  
Hydrothermal Method ◽  
Au Nanoparticles ◽  
Reduction Method ◽  
Photocatalytic Reduction ◽  
Photocatalytic Properties ◽  
Absorption Intensity ◽  
Reducing Ability ◽  
Highly Dispersed ◽  
Naoh Solution ◽  
Hydrothermal Reduction

Highly dispersed TiO2 nanotubes (TiO2-NTs) were synthesized via the reaction of anatase TiO2 powder with NaOH solution. Au nanoparticles of about 5 nm were deposited on the surface of TiO2-NTs with hydrothermal reduction method. The prepared nanocomposites were well characterized with TEM and XRD. Their photocatalytic properties and reducing ability were investigated by UV-Vis absorption and photocatalytic reduction of Cd2+ ions with different amount of TiO2-NTs and TiO2-NTs (Au) varying from 0.1g to 0.001g. The results from absorption patterns and AAS showed that the absorption intensity of TiO2-NTs (Au) was higher compared with that of TiO2-NTs. Moreover, the concentration of remanent Cd2+ (0.48mg/L) using TiO2-NTs (Au) was lower than that of Cd2+ (0.65mg/L) using TiO2-NTs.

Facile synthesis of monodispersed yolk-shelled molybdenum disulfide microspheres with enhanced photocatalytic properties

2018 ◽  
Vol 5 (12) ◽  
pp. 3082-3090 ◽  
Author(s):  
Yongxing Zhang ◽  
Yuanyuan Zhao ◽  
Jia Li ◽  
Li Li ◽  
Yi Liu ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Molybdenum Disulfide ◽  
Photocatalytic Properties ◽  
Facile Synthesis

Monodispersed yolk-shelled MoS2 microspheres with outstanding photocatalytic properties have been synthesized by the hydrothermal method with the assistance of P123.

Synthesis and Application of Glyoxalted Polyacrylamide Paper Strengthening Agent

2011 ◽  
Vol 236-238 ◽  
pp. 1385-1390 ◽  
Author(s):  
Zhao Yang Yuan ◽  
Hui Ren Hu ◽  
Yang Bing Wen
Keyword(s):  
Ph Value ◽  
Raw Materials ◽  
Strength Properties ◽  
Synthesis Conditions ◽  
Paper Making ◽  
H Nmr ◽  
Dimethyl Ammonium ◽  
Ft Ir ◽  
Radical Solution ◽  
Diallyl Dimethyl Ammonium Chloride

The glyoxalted polyacrylamide(GPAM) resins were obtained by cross-linking reaction between glyoxal and cationic polyacrylamide(CPAM) through aqueous solution copolymerization. The based CPAM was synthesized with acrylamide(AM) and diallyl dimethyl ammonium chloride(DADMAC) as raw materials by living free radical solution polymerization. Various synthesis conditions were discussed and the optimum conditions for copolymer’s synthesis were as follows: the amount of DADMAC 20%(wt), the charge of the initiator 0.5%(wt), the dosage of chain transfer agent(2-mercaptoethanol) 1.0%(wt), and the charge of crosslinking monomer 9.0%, the dosage of glyoxal 25%(wt), the pH value of the tertiary reaction 7.5-8.0 and the tertiary temperature about 65°C. The structure of the resulting product was characterized by FT-IR, 1H-NMR. Then the GPAM resins were used in the process of paper-making as wet-end additive, the results showed that the paper sheets can get a significant increase in strength properties from the added novel product.

Hydrothermal Synthesis and Upconversion Properties of Yb3+, Tm3+ Co-Doped Gd6MoO12 Phosphor with Regular Morphologies

2014 ◽  
Vol 597 ◽  
pp. 109-112
Author(s):  
Jia Yue Sun ◽  
Bing Xue ◽  
Qiu Mei Di ◽  
Qi Guang Xu ◽  
Liu Han
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Ph Value ◽  
Upconversion Luminescence ◽  
Synthesis Condition ◽  
Luminescence Properties ◽  
Pumping Power ◽  
Co Doped

Yb3+, Tm3+ co-doped Gd6MoO12 phosphors were prepared by the hydrothermal method. After tuning the PH value and EDTA, phosphors present different morphologies including hexagonal prisms, spindles, and spheres. Under 980nm excitation, the upconversion luminescence properties of the as-prepared phosphors are studied based on changing the synthesis condition. It is found that usage of EDTA and pH changing both play crucial key in the formation of morphology. Pumping power on the UC luminescence properties and level diagram mechanism of Gd6MoO12:Yb3+/Tm3+phosphor have also been discussed.

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