Magnetic silica dispersions: preparation and stability of surface-modified silica particles with a magnetic core

Langmuir ◽  
1994 ◽  
Vol 10 (1) ◽  
pp. 92-99 ◽  
Author(s):  
Albert P. Philipse ◽  
Michel P. B. van Bruggen ◽  
Chellapah Pathmamanoharan
Keyword(s):  
Magnetic Core ◽  
Silica Particles ◽  
Modified Silica ◽  
Magnetic Silica ◽  
Surface Modified

Preparation of Surface-Modified Silica Particles from Rice Husk Ash and Its Composites with Degradable Polylactic Acid

2015 ◽  
Vol 354 (1) ◽  
pp. 48-54 ◽  
Author(s):  
Pakorn Opaprakasit ◽  
Siriporn Boonpa ◽  
Narisara Jaikaew ◽  
Atitsa Petchsuk ◽  
Pramuan Tangboriboonrat
Keyword(s):  
Polylactic Acid ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Silica Particles ◽  
Modified Silica ◽  
Surface Modified

Surface Modified Magnetic Silica Particles for the Immobilization of Laccase and its Use for Pentachlorophenol Removal in Water

2012 ◽  
Vol 178-181 ◽  
pp. 657-660
Author(s):  
Ying Wang ◽  
Di Zhang ◽  
Xue Li ◽  
Bo Li
Keyword(s):  
Enzymatic Activity ◽  
Aqueous Solutions ◽  
Silica Particles ◽  
Immobilized Laccase ◽  
Metal Chelating ◽  
Chelating Ligand ◽  
Magnetic Silica ◽  
Surface Modified ◽  
Catalytic Capacity

Magnetic Cu2+-chelated silica particles using polyacrylamide (PAM) as a metal-chelating ligand were developed and used for the immobilization of laccase by coordination. The particles were characterized by (XRD). The effect of Cu2+ and PAM concentrations on the enzymatic activity and the catalytic capacity for pentachlorophenol (PCP) degradation were evaluated. The results showed that the optimum Cu2+ and PAM concentrations were 0.2 mol/L and 2 g/L, respectively. The immobilized laccase prepared in this work exhibited a good catalytic capacity for PCP removal from aqueous solutions.

The adsorption of random copolymers of vinyl acetate and ethylene on surface-modified silica particles

1988 ◽  
Vol 31 ◽  
pp. 33-46 ◽  
Author(s):  
Terence Cosgrove ◽  
Nigel Finch ◽  
Brian Vincent ◽  
John Webster
Keyword(s):  
Vinyl Acetate ◽  
Silica Particles ◽  
Random Copolymers ◽  
Modified Silica ◽  
Surface Modified

Immobilization of Laccase on Surface Modified Magnetic Silica Particles and its Use for the Papermaking Wastewater

2014 ◽  
Vol 670-671 ◽  
pp. 267-270 ◽  
Author(s):  
Ying Liu ◽  
Zhen Wang
Keyword(s):  
Silica Particles ◽  
Absorption Capacity ◽  
Pulp And Paper ◽  
High Efficacy ◽  
Immobilized Laccase ◽  
Paper Making ◽  
Maximal Absorption ◽  
Magnetic Silica ◽  
Surface Modified ◽  
Papermaking Wastewater

Surface modified magnetic silica particles for the immobilization of laccase. The maximal absorption capacities of laccase were evaluated systemically. Compared with unmodified magnetic silica particles, the modified magnetic silica particles showed better absorption capacity of the laccase. The immobilized laccase has been used to treat pulp and paper making wastewater, and showed high efficacy on the removal of COD.

Nanoengineering of Surface Modified Silica Particles to Form Core-Shell and HollowNanospheres of Iron Oxide

2007 ◽  
Vol 7 (10) ◽  
pp. 3662-3669 ◽  
Author(s):  
Neha Hebalkar ◽  
P. Radhika ◽  
B. Sreedhar ◽  
M. Lakshmi Kantam
Keyword(s):  
Iron Oxide ◽  
Silica Particles ◽  
Core Shell ◽  
Modified Silica ◽  
Surface Modified

Fabrication and Evaluation of the Novel Elastomer Based Nanocomposite with Pressure Sensing Function

2007 ◽  
Vol 544-545 ◽  
pp. 741-744
Author(s):  
Youn Gyu Han ◽  
Tomonori Shibata ◽  
Rajagopalan Ramaseshan ◽  
Tohru Sekino ◽  
Koichi Niihara
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Carbon Particle ◽  
Conductive Filler ◽  
Silica Particles ◽  
Modified Silica ◽  
Pressure Sensing ◽  
Carbon Particles ◽  
Pressure Sensitive ◽  
Surface Modified

A novel organic/inorganic composite material which can work as a pressure sensor has been synthesized. This composite basically contains nano-sized carbon particles as conductive filler into an elastomer matrix to achieve pressure sensitive function. The superior pressure sensitive effect was showed at 0.88vol% of carbon particles while in the previous study the micro-sized carbon particle was required above 30vol%. In addition, nano-sized silica particles were added to reinforce electrical insulation properties and to improve the pressure sensing reliability of the composite. The addition of the surface modified silica improved better both the sensing performance and the mechanical strength than the composite containing non-modified silica particles. These polymer-based sensors have economical advantage due to low cost production regardless of the high performance.

Shape memory polyurethanes cross-linked by surface modified silica particles

2009 ◽  
Vol 19 (8) ◽  
pp. 1166 ◽  
Author(s):  
Moon Kyoung Jang ◽  
Andreas Hartwig ◽  
Byung Kyu Kim
Keyword(s):  
Shape Memory ◽  
Silica Particles ◽  
Modified Silica ◽  
Surface Modified
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