Aloe Vera Mediated Green Synthesis of ZnO Nanostructure under Sol-gel Method: Effect of Antimicrobial Activity

2020 ◽  
Vol 12 (2) ◽  
pp. 02041-1-02041-5
Author(s):  
Seifunnisha O. ◽  
◽  
Shanthi J. ◽  
Keyword(s):  
Antimicrobial Activity ◽  
Green Synthesis ◽  
Sol Gel ◽  
Aloe Vera ◽  
Gel Method ◽  
Sol Gel Method ◽  
Zno Nanostructure ◽  
Method Effect

Fabrication and Characteristics of Methyl-Modified TiO2-SiO2 Membrane by Sol-Gel Method: Effect of Titania Content

2021 ◽  
Vol 219 (1) ◽  
pp. 233-246
Author(s):  
Jing Yang ◽  
Gaofei Zhang ◽  
Ruifeng Zhang ◽  
Yingming Guo ◽  
Bo Li
Keyword(s):  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Titania Content ◽  
Method Effect

scholarly journals Nanosized TiO2Photocatalyst Powder via Sol-Gel Method: Effect of Hydrolysis Degree on Powder Properties

2009 ◽  
Vol 2009 ◽  
pp. 1-8 ◽  
Author(s):  
Nor Hafizah ◽  
Iis Sopyan
Keyword(s):  
Crystal Structure ◽  
Surface Area ◽  
Sol Gel ◽  
Xrd Analysis ◽  
Gel Method ◽  
Sol Gel Method ◽  
Hydrolysis Degree ◽  
Method Effect ◽  
Powder Properties ◽  
Dta Curves

NanosizedTiO2powder was synthesized via sol-gel method using titanium tetraisopoxide (TPT) as the precursor. Mol ratios of water to TPT were varied from 1 (Powder A), 2 (Powder B), 3 (Powder C), and 4 (Powder D) to evaluate effect of hydrolysis degree. TG/DTA curves showed that amorphous phase turned to anatase crystal structure at ca. 415, 337, 310, and339∘C for Powders A, B, C, and D, respectively. XRD analysis showed that all the synthesizedTiO2powders were 100% in anatase form with Powders B and C showing considerably higher crystallinities. The powders obtained at lower water to TPT mol ratios were spherical in shape and they became bar-like shapes higher mol ratios. The lower hydrolysis degree led to higher surface area of the Powder A (24.8 m2/g) compared to Powder B (14.6 m2/g). From phenol photocatalytic measurement, Powder B was the most efficient attributed to its higher crystallinity.

Facile one step synthesis of novel TiO2 nanocoral by sol–gel method using Aloe vera plant extract

2014 ◽  
Vol 89 (5) ◽  
pp. 445-452 ◽  
Author(s):  
K. S. Venkatesh ◽  
S. R. Krishnamoorthi ◽  
N. S. Palani ◽  
V. Thirumal ◽  
Sujin P. Jose ◽  
...  
Keyword(s):  
Plant Extract ◽  
Sol Gel ◽  
Aloe Vera ◽  
Gel Method ◽  
Sol Gel Method ◽  
One Step

Broad spectrum antimicrobial activity of Ca(Zn(OH)3)2·2H2O and ZnO nanoparticles synthesized by the sol–gel method

2018 ◽  
Vol 89 (1) ◽  
pp. 284-294 ◽  
Author(s):  
M. Soria-Castro ◽  
S. C. De la Rosa-García ◽  
P. Quintana ◽  
S. Gómez-Cornelio ◽  
A. Sierra-Fernandez ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Broad Spectrum ◽  
Zno Nanoparticles ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

scholarly journals Green synthesis of Sodium alginate mediated Fluorapatite Nanoparticle via Sol-Gel method

2021 ◽  
Vol 2 (1) ◽  
pp. 30-41
Author(s):  
Pooneh Kia ◽  
Mansor Bin Ahmad ◽  
Kamyar Shameli
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
Green Synthesis ◽  
Sodium Alginate ◽  
Sol Gel ◽  
The Body ◽  
Hydroxyl Groups ◽  
Calcium Nitrate Tetrahydrate ◽  
Gel Method ◽  
Sol Gel Method

Fluorapatite (FA) can be used as a bioactive substance in the body, especially the teeth implants. The FA nanoparticle was synthesized by adding the fluorine to the structure of HA using sol–gel method and the heat treatment of 700 °C. Being low costs, eco-friendly and safer features are obvious advantages of the green synthesis of FA nanoparticles by using bio stabilizer of sodium alginate. Calcium nitrate tetrahydrate, diammonium phosphate, ammonium fluoride were used as precursors of Ca, P and F respectively with the ratio of 1:67 Ca/P. The presence of crystal structure of HA and FA investigated by the results of XRD which confirmed the substitution of hydroxyl groups with the fluorine in the crystal structure of apatite. FTIR obtained that fluorine was substituted by hydroxyl groups in the structure of fluoridated hydroxyapatite by disappearing the hydroxyl groups at 3600 cm-1 in the FA. TGA investigated the thermal stability of the nanoparticles that showed the discrepancy of weight loss for HA and FA between 600?C to 800?C. By using TEM, average sizes of 35 and 49 nm were determined for HA and FA respectively. FESEM results confirmed the shapes and distribution of particles of HA and FA in that, round like for the former and rode like for the later. The overall performance of utilizing sodium alginate (SA) as a bio-stabilizer is to obtain better precipitate which leads to having better crystallinity and smaller particle size and thermal stability remarkably improved.

Photodynamic efficiency of porphyrins encapsulated in polysilsesquioxanes

2012 ◽  
Vol 66 (4) ◽  
Author(s):  
Renata Rychtáriková ◽  
Stanislav Šabata ◽  
Jiří Hetflejš ◽  
Gabriela Kuncová
Keyword(s):  
Antimicrobial Activity ◽  
Optical Properties ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
E Coli ◽  
Mesoporous Organosilica

AbstractMesoporous organosilica-porphyrin composites were obtained by entrapment of 5,10,15,20-tetraphenylporphyrin (TPP) and 5,10,15,20-tetrakis(1-methyl-4-pyridinio)porphyrin (TMPyP) into three polysilsesquioxanes prepared by the sol-gel method from 1,2-bis(triethoxysilyl)ethane, 1,6-bis(triethoxysilyl)hexane, and 1,8-bis(triethoxysilyl)octane. The materials were characterised by their texture and optical properties (fluorescence and absorbance) and by light-induced antimicrobial activity against E. coli BL21(DE3) (pET16bDsRed) strain.

Structural features and antimicrobial activity of hydrogels obtained by the sol–gel method from silicon, zinc, and boron glycerolates

2020 ◽  
Vol 95 (3) ◽  
pp. 682-692
Author(s):  
Tat’yana G. Khonina ◽  
Nikolay V. Kungurov ◽  
Natal’ya V. Zilberberg ◽  
Natal’ya P. Evstigneeva ◽  
Muza М. Kokhan ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Sol Gel ◽  
Structural Features ◽  
Gel Method ◽  
Sol Gel Method
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