Organic–inorganic hybrid mesoporous silicas: functionalization, pore size, and morphology control

2006 ◽  
Vol 6 (1) ◽  
pp. 32-42 ◽  
Author(s):  
Sung Soo Park ◽  
Chang-Sik Ha
Keyword(s):  
Pore Size ◽  
Morphology Control ◽  
Mesoporous Silicas ◽  
Inorganic Hybrid ◽  
Size And Morphology ◽  
Size And Morphology Control

Size and Morphology Control of Aggregates from Supramolecular Graft Copolymers Stabilized by Ionic Interaction

2010 ◽  
Vol 211 (22) ◽  
pp. 2434-2442 ◽  
Author(s):  
Yeong Min Jo ◽  
Chan Woo Park ◽  
Bokyung Jung ◽  
Hee-Man Yang ◽  
Jong-Duk Kim
Keyword(s):  
Graft Copolymers ◽  
Morphology Control ◽  
Ionic Interaction ◽  
Size And Morphology ◽  
Size And Morphology Control

Swift Synthesis of Hierarchically Ordered Mesocellular Mesoporous Silica by Microwave-Assisted Hydrothermal Method

2008 ◽  
Vol 8 (8) ◽  
pp. 3995-3998 ◽  
Author(s):  
You-Kyong Seo ◽  
I. Suryanarayana ◽  
Young Kyu Hwang ◽  
Namsoo Shin ◽  
Do-Cheon Ahn ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Microwave Irradiation ◽  
Pore Size ◽  
Hydrothermal Method ◽  
Aging Time ◽  
Micropore Volume ◽  
Mesoporous Silicas ◽  
Microwave Assisted ◽  
Silica Source ◽  
Size And Morphology

Hierarchically ordered mesocellular mesoporous silicas (HMMS) were swiftly synthesized using P123 and sodium silicate as a silica source within an hour by applying microwave irradiation without pore expander. The XRD, TEM and BET studies demonstrated that materials as-synthesized and calcined have the hierarchically ordered mesocellular structure with two different sizes about 10 nm and 30 nm pores having a minimized micropore volume compared with conventional hydrothermal method. Moreover, the HMMS sample prepared by microwave-assisted hydrothermal method had higher surface area than that of conventional hydrothermal method. The variation of the pore size and morphology of mesocellular structure varied with the aging time.

Nanoparticle size and morphology control using ultrafast laser induced forward transfer of Ni thin films

2013 ◽  
Vol 103 (9) ◽  
pp. 093113 ◽  
Author(s):  
Ryan D. Murphy ◽  
Michael J. Abere ◽  
Keegan J. Schrider ◽  
Ben Torralva ◽  
Steven M. Yalisove
Keyword(s):  
Thin Films ◽  
Morphology Control ◽  
Ultrafast Laser ◽  
Nanoparticle Size ◽  
Forward Transfer ◽  
Size And Morphology ◽  
Size And Morphology Control

Size and morphology control of Y 2 O 3 nanopowders via a sol–gel route

2003 ◽  
Vol 171 (1-2) ◽  
pp. 152-160 ◽  
Author(s):  
A Dupont ◽  
C Parent ◽  
B Le Garrec ◽  
J.M Heintz
Keyword(s):  
Sol Gel ◽  
Morphology Control ◽  
Size And Morphology ◽  
Size And Morphology Control

Preparation and Microstructures of Nano-Porous SiO2 Thermal Insulation Materials by Freeze-Casting of SiO2 in TBA/H2O Suspensions

2012 ◽  
Vol 512-515 ◽  
pp. 315-318 ◽  
Author(s):  
Jie Tang ◽  
Yu Feng Chen ◽  
Hai Lin Liu ◽  
Yan Li Huo ◽  
Chun Peng Wang
Keyword(s):  
Pore Size ◽  
Butyl Alcohol ◽  
Freeze Casting ◽  
Bulk Materials ◽  
Insulation Materials ◽  
Tert Butyl Alcohol ◽  
Porous Sio2 ◽  
Size And Morphology ◽  
Size And Morphology Control ◽  
Nano Size

A kind of porous SiO2 bulk materials with pore size distributed in nano and micron scales has been fabricated by freeze-casting of SiO2 nano-size powders in TBA (tert-butyl alcohol)/H2O suspensions. The content of TBA in the well mixed TBA/H2O binary co-solvent plays an important role in size and morphology control of the pores in the obtained SiO2 monolithic materials, since the ratio of TBA/H2O determines the competition of crystallization of TBA and ice, therefore, the microstructure of the monolithic SiO2. It was found that the content of TBA in the range from 30 to 40% was suitable for formation of more nano-pores in the SiO2 monolith. The insulation materials freeze-casted from the suspension of SiO2 in 13wt% and TBA in 40wt% has the density of 0.17g/cm3, and the specific surface area of 282m2/g. The pore size has a trimodal size distribution with three mean diameters of 15nm, 100nm and 4μm, respectively.

Mono and Tri-cationic Imidazolium Salts: Use as Stabilizers for Silver Nanoparticles and Anticancer Study

2021 ◽  
Vol 6 (3) ◽  
pp. 167-174
Author(s):  
R. Rohini ◽  
N. Naresh Reddy ◽  
A. Sanjeev ◽  
S. Bhaskar ◽  
P. Muralidhar Reddy
Keyword(s):  
Silver Nanoparticles ◽  
Aqueous Medium ◽  
Chemical Reduction ◽  
Reaction Medium ◽  
Morphology Control ◽  
Medium Effect ◽  
Imidazolium Salts ◽  
Size And Morphology ◽  
Size And Morphology Control

In present strudy, the synthesis and characterization of monocationic 1,3-tetradecylimidazolium; [(C14)2Im]Br and tricationic benzene centered tris-tetradecyl/hexadecyl imidazolium bromide salts; i.e. [(C14)3C6H3Im]Br3 and [(C16)3C6H3ImBr]Br3 is reported. The stabilizer role of imidazolium salts to prepare silver nanoparticles (AgNPs) via chemical reduction method was investigated. To understand the reaction medium effect on the size and morphology control of AgNPs, monophasic (aqueous medium) and biphasic (DCM/H2O) approaches were applied. The morphology control was noticed for AgNPs protected with [(C14)3C6H3Im]Br3 (show sphere like morphology) and [(C14)2Im]Br (show dendritic structures) via biphasic approach. A clear variation in the size and morphology of AgNPs was noticed by varying the type of stabilizers and reaction medium. It was also observed that AgNPs were formed and stabilized only in aqueous medium in both approaches, thus it is assumed that AgNPs surfaces were protected by imidazolium salts with bilayer fashion. Anticancer activity of imidazolium salts was performed by MTT assay against HeLa cancer cell lines. The result shows that cytotoxic activity of tricationic [(C14)3C6H3Im]Br3 was more potent than that of monocationic [(C14)2Im]Br. The outcome suggests that there is an urgent need to develop new polycationic imidazolium salts for various chemical and medicinal applications.

Concise synthesis of NaTi2(PO4)3 nanocrystals with size and morphology control

2019 ◽  
Vol 30 (2) ◽  
pp. 517-520 ◽  
Author(s):  
Hanqing Dai ◽  
Wenqian Xu ◽  
Kehan Yu ◽  
Wei Wei
Keyword(s):  
Morphology Control ◽  
Size And Morphology ◽  
Size And Morphology Control
Sign in / Sign up

Export Citation Format

Share Document