Urchin-like hollow SiO2@γ-MnO2 microparticles for the rapid degradation of organic dyes

In this paper, using hollow silica microspheres as carrier, we developed a facile method for preparation of a novel kind of hollow urchin-like SiO2@γ-MnO2 microparticles with excellent performance for rapid oxidation degradation of organic dyes.

Download Full-text

Ureido-modified macroporous hollow silica microspheres for recovery of Wilkinson's catalyst in hydrogenated nitrile butadiene rubber

Powder Technology ◽

10.1016/j.powtec.2017.06.038 ◽

2017 ◽

Vol 318 ◽

pp. 501-506 ◽

Cited By ~ 4

Author(s):

Chunjin Ai ◽

Guangbi Gong ◽

Xutao Zhao ◽

Peng Liu

Keyword(s):

Butadiene Rubber ◽

Silica Microspheres ◽

Hollow Silica ◽

Nitrile Butadiene Rubber ◽

Wilkinson’S Catalyst ◽

Wilkinson's Catalyst

Download Full-text

Investigation of radiofrequency induced release kinetics from magnetic hollow silica microspheres

Microporous and Mesoporous Materials ◽

10.1016/j.micromeso.2012.04.019 ◽

2012 ◽

Vol 159 ◽

pp. 119-125 ◽

Cited By ~ 13

Author(s):

Pavel Kovačík ◽

Zuzana Kremláčková ◽

František Štěpánek

Keyword(s):

Release Kinetics ◽

Silica Microspheres ◽

Hollow Silica

Download Full-text

Preparation of fluorescent mesoporous hollow silica–fullerene nanoparticles via selective etching for combined chemotherapy and photodynamic therapy

Nanoscale ◽

10.1039/c5nr02769a ◽

2015 ◽

Vol 7 (28) ◽

pp. 11894-11898 ◽

Cited By ~ 20

Author(s):

Yannan Yang ◽

Meihua Yu ◽

Hao Song ◽

Yue Wang ◽

Chengzhong Yu

Keyword(s):

Photodynamic Therapy ◽

Selective Etching ◽

Particle Sizes ◽

Combined Chemotherapy ◽

Excellent Performance ◽

Hollow Silica ◽

Fullerene Nanoparticles

Fluorescent mesoporous hollow silica–fullerene nanoparticles with particle sizes of ∼50 nm have been successfully prepared, showing excellent performance in combined chemo-photodynamic therapy.

Download Full-text

A Green Approach to Preparing Nanosized Hollow Silica Microspheres with Waste Polystyrene

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.79-82.1511 ◽

2009 ◽

Vol 79-82 ◽

pp. 1511-1514

Author(s):

Hong Feng Wang ◽

Zhi Qi Wang ◽

Ai Ping Wang ◽

Zhi Bin Zhu ◽

Yan Sheng Yin

Keyword(s):

Particle Size ◽

Average Particle Size ◽

Average Particle ◽

Organic Solution ◽

Silica Microspheres ◽

Water Emulsion ◽

Hollow Silica ◽

Green Approach ◽

Waste Polystyrene ◽

Oil In Water Emulsion

An attempt was made to prepare hollow silica microspheres by an oil-in-water emulsion which proposed to use waste polystyrene organic solution as oil phase. Effects of the kinds and amounts of surfactants and the concentration of waste polystyrene solution on the nanosized hollow silica microspheres were studied. The prepared hollow silica microspheres were characterized by TEM, XRD, TG-DTA and particle size distribution analyzer. The experimental results showed that the waste polystyrene organic solution was successfully treated as oil core and the cores could be removed at about 350°C. Meanwhile, the obtained hollow microspheres were amorphous with an average particle size of 40nm. The hollow silica microspheres could be obtained with the selected surfactant.

Download Full-text

Synthesis of Hollow Silica Microspheres with High-Developed Surface Area

NATO Science for Peace and Security Series A: Chemistry and Biology - Technological Innovations in Sensing and Detection of Chemical, Biological, Radiological, Nuclear Threats and Ecological Terrorism ◽

10.1007/978-94-007-2488-4_22 ◽

2011 ◽

pp. 215-219

Author(s):

I. Bei ◽

A. Tolstov ◽

A. Ishchenko

Keyword(s):

Surface Area ◽

Silica Microspheres ◽

Hollow Silica ◽

Developed Surface

Download Full-text

Biocompatible Magnetic Hollow Silica Microspheres for Drug Delivery

Current Organic Chemistry ◽

10.2174/1385272811317100005 ◽

2013 ◽

Vol 17 (10) ◽

pp. 1029-1033 ◽

Cited By ~ 13

Author(s):

Alexandru Mihai Grumezescu ◽

Ecaterina Andronescu ◽

Anton Ficai ◽

Valentina Grumezescu ◽

Coralia Bleotu ◽

...

Keyword(s):

Drug Delivery ◽

Silica Microspheres ◽

Hollow Silica

Download Full-text

Hollow silica microspheres for buoyancy-assisted separation of infectious pathogens from stool

Journal of Chromatography A ◽

10.1016/j.chroma.2016.09.002 ◽

2016 ◽

Vol 1466 ◽

pp. 29-36 ◽

Cited By ~ 2

Author(s):

Shannon E. Weigum ◽

Lichen Xiang ◽

Erica Osta ◽

Linying Li ◽

Gabriel P. López

Keyword(s):

Silica Microspheres ◽

Hollow Silica

Download Full-text

Conservation of the Biocatalytic Activity of Whole Yeast Cells by Supported Sol – Gel Entrapment for Efficient Acyloin Condensation

Periodica Polytechnica Chemical Engineering ◽

10.3311/ppch.14645 ◽

2019 ◽

Vol 64 (2) ◽

pp. 153-161 ◽

Cited By ~ 1

Author(s):

László Nagy-Győr ◽

Emese Farkas ◽

Mihai Lăcătuș ◽

Gergő Tóth ◽

Dániel Incze ◽

...

Keyword(s):

Sol Gel ◽

Pyruvate Decarboxylase ◽

Yeast Cells ◽

The Novel ◽

Silica Microspheres ◽

Promising Alternative ◽

Hollow Silica ◽

Gel Entrapment ◽

Whole Cells ◽

2Nd Generation

In this study, an efficient and generally applicable 2nd generation sol – gel entrapment method was developed for immobilization of yeastcells. Cells of Lodderomyces elongisporus, Candida norvegica, Debaryomyces fabryi, Pichia carsonii strains in admixture with hollow silica microspheres support were immobilized in sol – gel matrix obtained from polycondensation of tetraethoxysilane. As biocatalysts in theselective acyloin condensation of benzaldehyde catalyzed by pyruvate decarboxylase of the yeast, the novel immobilized whole-cell preparations were compared to other states of the cells such as freshly harvested wet cell paste, lyophilized cells and sol – gel entrapped preparations without hollow silica microspheres support. Reusability and storability studies designated this novel 2nd generation sol – gel method as a promising alternative for solid formulation of whole-cells bypassing expensive and difficult downstream steps while providing easy-to-handle and stable biocatalysts with long-term preservation of the biocatalytic activity.

Download Full-text