Results 41 to 50 of about 16,657 (260)

Synthesis of titanate nanofibers co-sensitized with ZnS and Bi2S3 nanocrystallites and their application on pollutants removal

open access: yes, 2015
The synthesis of nanocomposite materials combining titanate nanofibers (TNF) with nanocrystalline ZnS and Bi2S3 semiconductors is described in this work. The TNF were produced via hydrothermal synthesis and sensitized with the semiconductor nanoparticles,
A.J. Silvestre   +40 more
core   +1 more source

A new approach to obtain Kevlar-49 from PET waste bottles [PDF]

open access: yes, 2013
Non-biodegradable polyethylene terephthalate (PET) bottles have attracted increasing attention due to environmental concern in today’s world. In order to reduce the amount of solid wastes generated and the dependency on fossil resources, a new approach ...
Mohammed, Issam Ahmed
core   +1 more source

POLY (ETHYLENE TEREPHTHALATE) COPOLYMERS WITH HALOGENATED TEREPHTHALIC ACIDS

open access: yesSen'i Gakkaishi, 1981
Poly (ethylene terephthalate) copolymers were prepared by substitution up to 40 mol% of diacid comonomers: 2, 5-dichloroterephthalic acid (TCl2) and 2, 5-dibromoterephthalic acid (TBr2). ηsp/C of the copolymers does not depend on the comonomer content. Melting point depression shows that copolymers with TCl2 and TBr2 are non-isomorphous.
Tsuyoshi Kiyotsukuri   +2 more
openaire   +2 more sources

Defect-dependent colossal negative thermal expansion in UiO-66(Hf) metal-organic framework [PDF]

open access: yes, 2015
Thermally-densified hafnium terephthalate UiO-66(Hf) is shown to exhibit the strongest isotropic negative thermal expansion (NTE) effect yet reported for a metal-organic framework (MOF).
Cliffe, Matthew J.   +4 more
core   +4 more sources

Self-Assembled Microwires of Terephthalic Acid and Melamine

open access: yesCrystals, 2017
Self-assembled microwires of terephthalic acid (TPA) and melamine are prepared through the evaporation of water in a solution mixture of TPA and melamine.
Hong Wang   +3 more
doaj   +1 more source

Biodegradable and Recyclable Luminescent Mixed‐Matrix‐Membranes, Hydrogels, and Cryogels based on Nanoscale Metal‐Organic Frameworks and Biopolymers

open access: yesAdvanced Functional Materials, EarlyView.
The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner   +4 more
wiley   +1 more source

Structure and function of the metagenomic plastic-degrading polyester hydrolase PHL7 bound to its product

open access: yesNature Communications, 2023
The authors describe the cocrystal structure of the highly efficient polyethylene terephthalate-degrading hydrolase PHL7 with its product terephthalic acid and elucidate the role of residues in subsites I and II for its thermal stability and of residue ...
P. Konstantin Richter   +14 more
doaj   +1 more source

Hybrid dynamic modeling of 4-CBA hydrogenation fixed-bed catalytic reactor of PTA production plant [PDF]

open access: yes, 2012
In this paper, a dynamic hybrid model of 4-carboxybenzaldehyde (4-CBA) hydrogenation fixed-bed catalytic reactor of Purified Terephthalic Acid (PTA) production plant has been developed. At the first step, the deactivation model of the reaction system has
Azarpour, Abbas, Zahedi, Gholamreza
core   +1 more source

Photoswitching Conduction in Framework Materials

open access: yesAdvanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez   +4 more
wiley   +1 more source

High efficient catalytic degradation of tetracycline and ibuprofen using visible light driven novel Cu/Bi2Ti2O7/rGO nanocomposite::Kinetics, intermediates and mechanism [PDF]

open access: yes, 2019
The photoexcited charge carriers trapping was an effective way to generate a large number of active species like O-2(center dot-) and (OH)-O-center dot radicals to oxidize pharmaceutical molecules.
Acevedo, R.   +4 more
core   +1 more source

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