نتایج جستجو برای: titania membranes

تعداد نتایج: 96669  

Journal: :European journal of materials 2023

Ceramic foams present special features that do not have the corresponding dense materials and hence they are widely used in a broad variety of applications. Titania has exceptional photoinduced properties with applications membranes, bioceramics photocatalysis photovoltaics. However, applications, anatase phase is more active, but sintering at high temperatue leads to transformation rutile. The...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2005
Jelena Sekulić Johan E ten Elshof Dave H A Blank

Pervaporation experiments were performed on microporous titania membranes using several binary liquids containing 2-20 wt % water. The membrane was nonselective in the separation of water from alcohols and p-dioxane but showed a remarkably high selectivity in the separation of water from ethylene glycol/water mixtures with < or =15 mol % water. The absence of selectivity under most conditions i...

Journal: :Journal of Molecular and Engineering Materials 2023

Honeycomb-shaped, hierarchical porous structure is fabricated using the breath figure method. Different solvents are used to fabricate membranes with five different concentrations spin coating. The diameter of pores controlled by polymer concentration as well solvents. Using methanol an additive solvent a homogeneous film achieved. Furthermore, effect on titania nanoparticles shows how particle...

Journal: Journal of Nanoanalysis 2017

Ceramic membranes are considered as alternatives for their polymeric counterparts due to highmechanical strength and thermal resistance; thus long lifetime. Usually, asymmetric ceramicmembranes are synthesized including several layers with different pore size distributionswith the top-layer playing the main separation role. Titania has several properties such asphotocatalytic activity and chemi...

Journal: :Scientific reports 2016
Meng Wang Guang Yang Peng Jin Hao Tang Huanhuan Wang Yong Chen

The high hydrophobicity of poly(vinylidene fluoride) (PVDF) membrane remains an obstacle to be applied in some purification processes of water or wastewater. Herein, a highly hydrophilic hybrid mesoporous titania membrane composed of mesoporous anatase titania (meso-TiO2) materials inside the three-dimensional (3D) macropores of PVDF membrane was successfully prepared by using the dual-template...

Journal: :Proceedings of the National Academy of Sciences of Belarus, Chemical Series 2018

S. Rowshanzamir, Somayeh Sarirchi

Nowadays, proton exchange membrane fuel cells (PEMFCs) are the most promising green energy conversion devices for portable and stationary applications. Traditionally, these devices were based onperfluoro-sulfonic acid electrolytes membranes, given the commercial name Nafion. Nafion is the mostused electrolyte membrane till now; because of its high electrochemical properties su...

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