Solvent-free synthesis of a porous thiophene polymer by mechanochemical oxidative polymerization

2018 ◽  
Vol 6 (44) ◽  
pp. 21901-21905 ◽  
Author(s):  
S. Grätz ◽  
M. Oltermann ◽  
E. Troschke ◽  
S. Paasch ◽  
S. Krause ◽  
...  
Keyword(s):  
Surface Area ◽  
Ball Mill ◽  
Oxidative Polymerization ◽  
High Surface ◽  
High Surface Area ◽  
Solvent Free ◽  
Porous Polymer ◽  
Polymerization Reaction ◽  
Free Environment ◽  
Solvent Free Synthesis

An oxidative polymerization reaction was brought into the solvent-free environment of a ball mill, yielding a porous polymer with a defined structure and high surface area.

A high surface area tunnel-type α-MnO2 nanorod cathode by a simple solvent-free synthesis for rechargeable aqueous zinc-ion batteries

2016 ◽  
Vol 650 ◽  
pp. 64-68 ◽  
Author(s):  
Muhammad Hilmy Alfaruqi ◽  
Saiful Islam ◽  
Jihyeon Gim ◽  
Jinju Song ◽  
Sungjin Kim ◽  
...  
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Zinc Ion ◽  
Solvent Free ◽  
Solvent Free Synthesis

Solvent-free synthesis of crystalline mesoporous γ-Fe2O3 as an anode material in lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57009-57012 ◽  
Author(s):  
Di Wu ◽  
Jing Ye ◽  
Lie Chen ◽  
Yongzheng Wang ◽  
Kai Fang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Surface Area ◽  
Anode Material ◽  
High Surface ◽  
High Surface Area ◽  
Lithium Ion ◽  
Solvent Free ◽  
Lithium Ions ◽  
Solvent Free Synthesis

As an advanced anode material for lithium ions batteries, crystalline mesoporous γ-Fe2O3 with a high surface area was prepared by a novel solvent-free route.

Facile one-pot solvent-free synthesis of hierarchical ZSM-5 for methanol to gasoline conversion

RSC Advances ◽  
2016 ◽  
Vol 6 (19) ◽  
pp. 15816-15820 ◽  
Author(s):  
Ziyu Liu ◽  
Dan Wu ◽  
Shu Ren ◽  
Xinqing Chen ◽  
Minghuang Qiu ◽  
...  
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Solvent Free ◽  
Acidic Properties ◽  
One Pot ◽  
High Crystallinity ◽  
Methanol To Gasoline ◽  
Solvent Free Synthesis

A hierarchical ZSM-5 zeolite with high crystallinity, high surface area, adjustable Si/Al ratio and suitable acidic properties was synthesized by a one-pot solvent-free method.

High surface area porous polymer frameworks: Potential host material for lithium–sulfur batteries

2016 ◽  
Vol 657 ◽  
pp. 626-630 ◽  
Author(s):  
Kui Ding ◽  
Qin Liu ◽  
Yakun Bu ◽  
Kai Meng ◽  
WenJing Wang ◽  
...  
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Porous Polymer ◽  
Host Material ◽  
Potential Host ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Preparing Titania Fibers and Their Photocatalytic Activity

1998 ◽  
Vol 549 ◽  
Author(s):  
H. Koike ◽  
Y. Oki ◽  
Y. Takeuchi
Keyword(s):  
Photocatalytic Activity ◽  
Surface Area ◽  
High Surface ◽  
Phenol Degradation ◽  
High Surface Area ◽  
Acid Catalyst ◽  
Titanium Isopropoxide ◽  
Polymerization Reaction ◽  
Precursor Fiber ◽  
Viscous Solution

AbstractContinuous titania fibers were prepared by a polytitanoxane precursor method. Polytitanoxane was synthesized through hydrolysis and polymerization reaction between partially chelated titanium isopropoxide and water without acid catalyst. Polytitanoxane, which was precipitated from an isopropanol solution by adding adequate amount of water to titanium isopropoxide, was then dried and dissolved in tetrahydrofuran. The concentrated viscous solution of polytitanoxane was considerably stable to further self-condensation and had good spinnability. The precursor fiber which was obtained by spinning the solution was calcined to form titania fibers.Two types of titania fibers were obtained under different calcination conditions from the same precursor fiber; Dense fiber with high tensile strength of higher than 1 GPa, and porous fiber with high surface area of more than 10 m2/g.Photocatalytic activity of those fibers was studied using the phenol mineralization reaction in water. The phenol degradation ability of high-surface-area titania fiber was almost the same as that of commercial titania powder for photocatalyst.

Transient laser heating induced hierarchical porous structures from block copolymer–directed self-assembly

Science ◽  
2015 ◽  
Vol 349 (6243) ◽  
pp. 54-58 ◽  
Author(s):  
Kwan Wee Tan ◽  
Byungki Jung ◽  
Jörg G. Werner ◽  
Elizabeth R. Rhoades ◽  
Michael O. Thompson ◽  
...  
Keyword(s):  
Pore Size ◽  
Surface Area ◽  
Self Assembly ◽  
Laser Heating ◽  
Shape Control ◽  
High Surface ◽  
Polymer Network ◽  
High Surface Area ◽  
Porous Polymer ◽  
Hierarchical Porous

Development of rapid processes combining hierarchical self-assembly with mesoscopic shape control has remained a challenge. This is particularly true for high-surface-area porous materials essential for applications including separation and detection, catalysis, and energy conversion and storage. We introduce a simple and rapid laser writing method compatible with semiconductor processing technology to control three-dimensionally continuous hierarchically porous polymer network structures and shapes. Combining self-assembly of mixtures of block copolymers and resols with spatially localized transient laser heating enables pore size and pore size distribution control in all-organic and highly conducting inorganic carbon films with variable thickness. The method provides all-laser-controlled pathways to complex high-surface-area structures, including fabrication of microfluidic devices with high-surface-area channels and complex porous crystalline semiconductor nanostructures.

scholarly journals Microwave-Assisted Solvent-Free Synthesis of Zeolitic Imidazolate Framework-67

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Heng Zhang ◽  
Jing Zhong ◽  
Guoxiang Zhou ◽  
Junliang Wu ◽  
Zhenyu Yang ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
High Surface ◽  
High Surface Area ◽  
Micropore Volume ◽  
Milling Process ◽  
Absorption Capacity ◽  
Solvent Free ◽  
Zeolitic Imidazolate Framework ◽  
Metal Organic ◽  
Solvent Free Synthesis

A microporous metal-organic framework (MOF), cobalt-based zeolitic imidazolate framework-67 (ZIF-67), was synthesized by the combination of solvent-free hand-mill and microwave irradiation, without any organic solvent and within 30 minutes. The hand-milling process can mix the reactants well by the virtue of high moisture/water absorption capacity of reactants. In addition, the outstanding electromagnetic wave absorption capability of cobalt leads to efficient conversion to MOF structures before carbonization. The obtained ZIF-67 possesses high surface area and micropore volume.

Meso-Architecture Block Copolymers with High Surface Area Styrene-Bridged Organosilica Particles as Constituent for the Stimuli-Responsive Remediation of Water

2020 ◽  
Author(s):  
Dennis Kollofrath ◽  
Marcel Geppert ◽  
Sebastian Polarz
Keyword(s):  
Waste Water ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Polymerization Reaction ◽  
Stimuli Responsive ◽  
Thermoresponsive Polymer ◽  
Shell System ◽  
Mesoporous Organosilica ◽  
Ideal System

The development of drugs for birth-control has changed society, and they are used by billions of woman on an every day basis. As for every mass product, there are problems associated with the waste it causes. One has found that residues of hormones in the urine of woman cannot be removed sufficiently from waste-water and this, in-turn, has already observable and undesired consequences in the biosphere. Apart from the removal of drugs, one is in general seeking new methods for the removal of hydrophobic impurities from waste-water. An ideal system would quantitatively take up the impurity, entrap it followed by preferably simple separation. Finally, one wants to reuse the absorbent, which implies the possibility for regeneration and recycling. Such as complex set of tasks requires a relatively complex materials architecture. Functional organic polymers with high affinity towards the drug, with stable open porosity and high surface area, stimuli-responsive properties and in the form of colloidal dispersions could do the job. Unfortunately, such a system does not exist. We solved this problem by generating mesoporous organosilica nanoparticles, which are monomers at the same time. Initiation of the polymerization reaction by surface-bound pore-walls leads to the formation of a special type of block-copolymer. The pore-walls are covered by the polymer, which cannot leach. An orthogonal modification was achieved by modification of the external surfaces of the particles with a thermoresponsive polymer by click-chemistry. The final core-shell system was able to remove hydrophobic molecules such as the hormone progesterone from water. A change of temperature induces the collapse of the thermoresponsive polymer, which closes the pores and induces aggregation of the particles. After separation of the particles, and thus also the entrapped impurity, from the solvent, one can re-open the pores, which leads to a release of the adsorbed compound(s).

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