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 pH Influence on the Preparation of Hollow Fe2O3 Spheres by Hydrothermal Method

2013 ◽  
Vol 669 ◽  
pp. 119-123
Author(s):  
Liang Qiao ◽  
Jie Chen ◽  
Li Qiang Jiang ◽  
Jing Wu Zheng
Keyword(s):  
Hydrothermal Method ◽  
Hollow Sphere ◽  
Ph Value ◽  
Block Structure ◽  
Raw Materials ◽  
Hollow Spheres ◽  
Structure Form ◽  
Ph Influence ◽  
Influence Of Ph

In this paper Fe2O3 precursor coating on the surface of carbon balls was prepared by hydrothermal method using Fe(NO3)3·9H20 and glucose as the raw materials. After calcination Fe2O3 hollow sphere could be achieved. The influence of pH value on the preparation of hollow Fe2O3 spheres was studied using XRD and SEM respectively. The results show that the pH value has no effect on the formation of Fe2O3 phase, but has a giant influence on the morphology of the hollow spheres. The Fe2O3 hollow spheres were achieved when the pH value was between 3 and 7. The particles with sheet and block structure form when pH7. The mechanism was studied, When 3

Influence of pH on the Morphology of Yttrium Oxide Hydroxide Nitrate Nanocrystal

2007 ◽  
Vol 336-338 ◽  
pp. 2176-2178 ◽  
Author(s):  
Zhang Lian Hong ◽  
Huang Guo ◽  
Li Xia Peng ◽  
Min Quan Wang
Keyword(s):  
Hydrothermal Method ◽  
Yttrium Oxide ◽  
Ph Value ◽  
High Ph ◽  
Ph Values ◽  
Starting Solution ◽  
Primary Mechanism ◽  
Oxide Hydroxide ◽  
Influence Of Ph

Yttrium oxide hydroxide nitrate (Y4O(OH)9NO3), which was prepared by polyvinyl alcoholassisted hydrothermal method from the Y(NO3)3 and KOH starting solution, was characterized by XRD and FE-SEM. The results revealed that pH value of the starting solution is an important factor which determines the morphology and size of the products. The obtained products varied from lamina microprisms to circular nanorods when the pH value increased from 7.0 to 8.0. In the high pH value above 8.0, the size of nanorods decreased with increasing pH value. A primary mechanism was proposed to explain the evolution of morphology and size of Y4O(OH)9NO3 products prepared under various pH values.

Influence of pH Value on Photocatalytic Activity of Bi4Ti3O12 Crystals Obtained by Hydrothermal Method

2014 ◽  
Vol 27 (2) ◽  
pp. 209-213 ◽  
Author(s):  
Xue Lin ◽  
Yv-ning Gong ◽  
Yao-dan Zhang ◽  
Yong-sheng Yan ◽  
Qing-feng Guan
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Ph Value ◽  
Influence Of Ph

scholarly journals Influence of pH on the dynamics of the wound process in the postoperative period

2021 ◽  
Vol 11 (2) ◽  
pp. 87-91
Author(s):  
А. М. Morozov ◽  
А. R. Armasov ◽  
А. N. Sergeev ◽  
S. V. Zhukov ◽  
Е. А. Sobol ◽  
...  
Keyword(s):  
Postoperative Period ◽  
Ph Value ◽  
Healing Process ◽  
Hydrogen Index ◽  
Biochemical Reactions ◽  
Postoperative Wound ◽  
Wound Exudate ◽  
Initial Values ◽  
Initial Ph ◽  
Influence Of Ph

The wound process is a set of stages that successively replace each other and as a result lead to epithelization of the skin and closure of the wound defect. The development of the wound process is influenced by the pH value of the wound contents, which determines the rate of all biochemical reactions occurring in the wound. In the course of the study, patients were measured for wound exudate in the postoperative period. It was noted that in patients with the initial values of the hydrogen index, which was 7, a more effective healing process of the postoperative wound was observed, while in patients with the initial pH value of 8, the wound process took a protracted character. 

scholarly journals Сitric acid influence on electroreduction processes in low concentrated Cu(NO3)2 solutions

2017 ◽  
Vol 5 (2) ◽  
pp. 136-143
Author(s):  
Alla Pravda ◽  
Vasil Larin
Keyword(s):  
Citric Acid ◽  
Ph Value ◽  
Reduction Reaction ◽  
Copper Electrodeposition ◽  
Nitrate Ions ◽  
Low Concentrations ◽  
Physico Chemical ◽  
Influence Of Ph ◽  
Kinetics Of ◽  
Cathode Reduction

Physico-chemical regularities citric acid influence on processes of copper and nitrate-ions reduction in low concentrated nitrate solutions were established. An influence of pH value on inhibitor action of low concentrations of the additive according to cathode reduction reaction of nitrate-ions, on kinetics of copper electrodeposition, on structure of the precipitates obtained was shown. Polarization measurements show us changes of copper electrodeposition at introduction of citric acid in Cu(NO3)2 solution. By the methods of traced elements and extraction into aqueous phase the reversible inclusion complexes into electrolytic copper, was established that proves participation of complexes in cathode process.

scholarly journals The Influence of pH Values on the Crystallite Size of ZnO by Solvothermal Synthesis

2017 ◽  
Vol 2 (2) ◽  
pp. 118 ◽  
Author(s):  
Ahmadi Jaya Permana ◽  
Dian Wulandari ◽  
Hartati Hartati ◽  
Harsasi Setyawati ◽  
Mochammad Zakki Fahmi
Keyword(s):  
Heat Treatment ◽  
Zinc Oxide ◽  
Crystallite Size ◽  
Solvothermal Synthesis ◽  
Solvothermal Method ◽  
Ph Value ◽  
Semiconductor Material ◽  
X Ray ◽  
Ph Values ◽  
Influence Of Ph

 Zinc oxide (ZnO) is a semiconductor material that widely used in various applications due to its unique properties. Synthesis of ZnO by solvothermal method has been conducted with controlled pH values. The variations of pH value were 10, 11 and 12 by adjusting NaOH content. Crystall structure of the synthesis products after heat treatment at 110oC and 600oC has characterised by X-ray Diffratometer (XRD). Crystallite size of ZnO was measured by Scherrer equation. Crystall phase of ZnO has been observed on all pH value variations at 110 oC with 22,98-37,06 nm of crystallite size, whereas ZnO has been observed on all pH value variations at 600 oC with 41,39-71,77 nm of crystallite size.Keywords: ZnO, pH values, crystallite size, solvothermal

Influence of Bi sources on TiO2/Bi2S3 composite films prepared by hydrothermal method

2020 ◽  
Vol 31 (6) ◽  
pp. 4662-4671 ◽  
Author(s):  
Xinli Li ◽  
Meilin Liu ◽  
Di Zhu ◽  
Dao Chen ◽  
Ming Yang ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Composite Films

Influence of pH value on structural, optical and photoresponse properties of SnS films grown via chemical bath deposition

2018 ◽  
Vol 210 ◽  
pp. 279-282 ◽  
Author(s):  
Mohamed S. Mahdi ◽  
K. Ibrahim ◽  
Naser M. Ahmed ◽  
A. Hmood ◽  
Shrook A. Azzez ◽  
...  
Keyword(s):  
Chemical Bath Deposition ◽  
Ph Value ◽  
Influence Of Ph

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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