Mesoporous silica based reservoir for the active protection of mild steel in an aggressive chloride ion environment

RSC Advances ◽  
2015 ◽  
Vol 5 (49) ◽  
pp. 39278-39284 ◽  
Author(s):  
T. Siva ◽  
Sundar Mayavan ◽  
S. S. Sreejakumari ◽  
S. Sathiyanarayanan
Keyword(s):  
Mesoporous Silica ◽  
Mild Steel ◽  
Chloride Ion ◽  
Stöber Method ◽  
Active Protection ◽  
Modified Stöber Method

Spherical mesoporous silica (m-SiO2) with well-ordered pores was synthesized by a modified Stöber method using CTAB micelles.

scholarly journals Effect of Ethanol on Ag@Mesoporous Silica Formation by In Situ Modified Stöber Method

Nanomaterials ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 362 ◽  
Author(s):  
Qian Chen ◽  
Yanling Ge ◽  
Henrika Granbohm ◽  
Simo-Pekka Hannula
Keyword(s):  
Mesoporous Silica ◽  
Stöber Method ◽  
Modified Stöber Method

Synthesis of Mesoporous Silica and its Adsorption Properties for Chloride Ions

2019 ◽  
Vol 956 ◽  
pp. 282-293
Author(s):  
Guo Jun Ke ◽  
Tian Shi Liu ◽  
Peng Fei Yang ◽  
Xiao Lin Tang
Keyword(s):  
Mesoporous Silica ◽  
Specific Surface ◽  
Adsorption Capacity ◽  
Chloride Ion ◽  
Chloride Ions ◽  
Adsorption Properties ◽  
Adsorption Effect ◽  
Silica Materials ◽  
Mesoporous Silica Materials ◽  
Mcm 41

A series of mesoporous silica materials (SBA-15, MCM-41, KIT-6) with different pore structures and properties were synthesized and characterized by means of small angle X-ray scattering, transmission electron microscopy, infrared spectroscopy and nitrogen adsorption-desorption. The adsorption properties of three mesoporous silica materials for chlorine ions in aqueous solution were investigated. The results show that SBA-15, MCM-41 with two-dimensional hexagonal structure has a better adsorption effect on chloride ion than KIT-6 With cubic core structure, and MCM-41 with larger specific surface area and smaller pore size has better adsorption effect on chloride ion than on SBA-15. The specific surface area of MCM-41 is 1036 m2/g, and the The adsorption kinetics accords with the pseudo-second-order kinetic model, and the adsorption isotherm is more consistent with the Langmuir isotherm model. The optimum operating conditions for MCM-41 to adsorb chloride ions are as follows: temperature 55 °C, pH 6, adsorption time 2 h, Cl- concentration 0.01 mol/L (584 mg/L) and adsorbent concentration 1.0 g/L. Under these conditions, the adsorption capacity of MCM-41 to chloride ions is greatly enhanced, and the maximum adsorption capacity is 188.18 mg/g.

Synthesis of nitrogen-doped carbon spheres using the modified Stöber method for supercapacitors

2019 ◽  
Vol 13 (2) ◽  
pp. 156-164
Author(s):  
Meng Liu ◽  
Lei Liu ◽  
Yifeng Yu ◽  
Haijun Lv ◽  
Aibing Chen ◽  
...  
Keyword(s):  
Carbon Spheres ◽  
Stöber Method ◽  
Nitrogen Doped ◽  
Modified Stöber Method ◽  
Nitrogen Doped Carbon

A non-surfactant self-templating strategy for mesoporous silica nanospheres: beyond the Stöber method

Nanoscale ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 3657-3662 ◽  
Author(s):  
Zhe Chen ◽  
Bo Peng ◽  
Jia-Qiong Xu ◽  
Xue-Chen Xiang ◽  
Dong-Fang Ren ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Size Distribution ◽  
Mesoporous Silica Nanoparticles ◽  
Silica Nanospheres ◽  
Stöber Method ◽  
Directed Synthesis ◽  
The Stöber Method ◽  
Surfactant Templates ◽  
Mesoporous Silica Nanospheres

The “pre-Ouzo” structure directed synthesis of mesoporous silica nanoparticles (MSNs) in the absence of surfactant templates probably also explains the origin of highly monodisperse size distribution of classical Stöber silica NPs.

Facile preparation of stable palygorskite/cationic red X-GRL@SiO2“Maya Red” pigments

RSC Advances ◽  
2014 ◽  
Vol 4 (108) ◽  
pp. 63485-63493 ◽  
Author(s):  
Ling Fan ◽  
Yujie Zhang ◽  
Junping Zhang ◽  
Aiqin Wang
Keyword(s):  
Red Pigments ◽  
Stöber Method ◽  
Facile Preparation ◽  
Modified Stöber Method ◽  
Hydrolysis And Polycondensation

We report the fabrication of stable “Maya Red” pigments with a purple-red hue by adsorption of cationic red X-GRL (CR-XGRL) onto palygorskite, which is followed by hydrolysis and polycondensation of tetraethoxysilaneviaa modified Stöber method to form a layer of SiO2.

Core–Shell Fe@SiO2 Nanoparticles Synthesized via Modified Stober Method for High Activity in Cr(VI) Reduction

2018 ◽  
Vol 18 (10) ◽  
pp. 6867-6872 ◽  
Author(s):  
Van Thi Thanh Ho ◽  
Nguyen Vu Hoa Hong ◽  
At Van Nguyen ◽  
Long Giang Bach ◽  
Tuan Phan Dinh
Keyword(s):  
High Activity ◽  
Sio2 Nanoparticles ◽  
Core Shell ◽  
Stöber Method ◽  
Modified Stöber Method

Responsive P(NIPAM-co-AA) Particle-Functionalized Magnetic Microspheres

2014 ◽  
Vol 67 (1) ◽  
pp. 134 ◽  
Author(s):  
Yiheng Wang ◽  
Mengge Xia ◽  
Yongtao Wu ◽  
Meifang Zhu
Keyword(s):  
Magnetic Microspheres ◽  
Core Shell ◽  
The Novel ◽  
Shell Nanoparticles ◽  
Stöber Method ◽  
Preparation Conditions ◽  
Amidation Reaction ◽  
Modified Stöber Method ◽  
Core Shell Nanoparticles ◽  
Seed Emulsion Polymerization

Functionalized magnetic microspheres were prepared by anchoring cross-linked core–shell poly(N-isopropylacrylamide-co-acrylic acid) (P(NIPAM-co-AA)) nanoparticles onto silica-coated magnetic microspheres (Fe3O4@SiO2). First, the smaller polystyrene/P(NIPAM-co-AA) core–shell nanoparticles were synthesized through seed emulsion polymerization and adhered to the surface of amino-modified Fe3O4@SiO2 micorspheres, which were made using the modified Stöber method through electrostatic interaction under appropriate preparation conditions. An amidation reaction between the carboxylic and amino groups on the respective surfaces was then catalyzed. Finally, the novel architecture magnetic microspheres with multiresponsive functionalities were obtained, and their polymerization conditions, environmental sensitivity, and magnetic properties were discussed and optimized. The superparamagnetism and temperature/pH dual responsivity and excellent dispersibility of the P(NIPAM-co-AA) functionalized magnetic microspheres provide them with high potential to be used in the fields of controlled drug delivery, bioseparation, and catalysis.

Preparation of structurally colored films assembled by using polystyrene@silica, air@silica and air@carbon@silica core–shell nanoparticles with enhanced color visibility

RSC Advances ◽  
2016 ◽  
Vol 6 (44) ◽  
pp. 37535-37543 ◽  
Author(s):  
Fen Wang ◽  
Xin Zhang ◽  
Jianfeng Zhu ◽  
Ying Lin
Keyword(s):  
Core Shell ◽  
Shell Nanoparticles ◽  
Stöber Method ◽  
Silica Core ◽  
Modified Stöber Method ◽  
Core Shell Nanoparticles

Polystyrene@silica (PS@SiO2) core–shell nanospheres were synthesized using a surfactant free method followed by a modified Stöber method in the research reported in this paper.

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