Ultra-thin porous glass membranes—An innovative material for the immobilization of active species for optical chemosensors

Müller, Ralf; Anders, Nicole; Titus, Juliane; Enke, Dirk

doi:10.1016/j.talanta.2012.12.038

Cited by 15 publications

(9 citation statements)

References 12 publications

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“…In comparison to other porous silicates, porous glasses show various advantages. These are the high flexibility in macroscopic geometry and pore size as well as the high mechanical, thermal and chemical stability . Disadvantages are the disordered pore structures and the comparatively low specific surface areas and porosities.…”

Section: Pseudomorphic Transformation Of Porous Glasses Into Micelle‐mentioning

confidence: 99%

Pseudomorphic Transformation of Porous Glasses into Micelle‐Templated Silica

Uhlig

Hollenbach

Rogaczewski

et al. 2017

Chemie Ingenieur Technik

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Micelle-templated silica (MTS)-composites with flexible macroscopic shape, monomodal or bimodal (hierarchical) pore structure, and high mechanical stability can be prepared by partial or complete pseudomorphic transformation of porous glasses (PG). The state of research concerning synthesis, transformation mechanism, characterization, and application of MTS/PG-composites is reviewed and the investigation of the transformation products by 129 Xe NMR spectroscopy and the direct synthesis of Al-MCM-41/PG-composites are introduced. Finally, several approaches like a double-templating strategy for pore protection is shown.

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Section: Pseudomorphic Transformation Of Porous Glasses Into Micelle‐mentioning

confidence: 99%

Pseudomorphic Transformation of Porous Glasses into Micelle‐Templated Silica

Uhlig

Hollenbach

Rogaczewski

et al. 2017

Chemie Ingenieur Technik

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“…53 The integration of a hierarchical porosity can improve the mass transfer in the membrane component. This is reflected by a reduced response time of the whole sensor.…”

Section: Perspectivesmentioning

confidence: 99%

Recent advances in the synthesis of hierarchically porous silica materials on the basis of porous glasses

et al. 2016

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The thermal phase separation and subsequent leaching of sodium borosilicate glasses is a well established route for the preparation of porous glasses exhibiting adjustable pore sizes in the range of 1 nm up to almost 1 mm as well as a very flexible geometric shape. The combination of this route with a large spectrum of synthesis strategies for the implementation of an additional pore system enables the preparation of hierarchically porous glass-based materials. This review covers a wide range of preparative routes for hierarchically porous silica materials starting from the sodium borosilicate glass with a special emphasis on the very recent developments in this versatile field of materials engineering.

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“…[8][9][10] Ion channels and other transport systems in biological membranes are ideal in this respect. 1,2,6,11,12 For such applications, the membranes need to be defect-free, uniform, and macroscopically robust with high permeability. Thus, many researchers have turned to the design and fabrication of synthetic membranes.…”

Section: Introductionmentioning

confidence: 99%

“…Self-supporting nanoporous membranes of macroscopic size and nanometer thickness have attracted considerable attention because of their prospective applications in nanoltration devices, 1,2 sensors, [3][4][5][6][7] and dye sensitized solar cells. [8][9][10] Ion channels and other transport systems in biological membranes are ideal in this respect.…”

Section: Introductionmentioning

confidence: 99%

Self-supporting hybrid silica membranes with 3D large-scale ordered interconnected pore architectures

Han

et al. 2015

RSC Adv.

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A simple and versatile method to form transferrable self-supporting membranes with a hierarchically ordered arrangement of nanometer size pores has been developed. The method relies on the formation of an ordered 3D arrangement of latex spheres on a sacrificial support, proper infusion of a suitably prepared organic-inorganic hybrid sol, followed by template removal without membrane destruction.Initially, the mechanical properties of self-supporting membranes prepared by combining a bi-functional silane (i.e., dimethyldimethoxysilane, DMDMOS) with tetramethoxysilane (TMOS) in different mole ratios were studied by nanoindentation. As the amount of DMDMOS increased, the hardness and Young's modulus decreased while the ratio of the two first decreased and then increased. The surface morphology and roughness as evaluated by Atomic Force Microscopy (AFM) also increased with the DMDMOS to TMOS ratio. Using a mole ratio of 1 : 1 and a close-packed 3D array of polystyrene spheres as a template, a flexible and transferrable membrane containing an ordered arrangement of interconnected pores of well-controlled size was constructed. The diameters and number of layers of the 3D pore architectures were manipulated by changing the microsphere diameter and concentration.Surface pore diameters ranged in size from 110-300 nm while the diameters of the internal pores ranged from 60-140 nm depending on the size of the original template. The number of layers ranged from two to five. Such self-supporting membranes, with their unique hierarchical, interconnected pore architectures over a large length scale, can be transferred to other surfaces for potential and promising applications in the fields of filtration, sensing and catalysis.

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Ultra-thin porous glass membranes—An innovative material for the immobilization of active species for optical chemosensors

Cited by 15 publications

References 12 publications

Pseudomorphic Transformation of Porous Glasses into Micelle‐Templated Silica

Pseudomorphic Transformation of Porous Glasses into Micelle‐Templated Silica

Recent advances in the synthesis of hierarchically porous silica materials on the basis of porous glasses

Self-supporting hybrid silica membranes with 3D large-scale ordered interconnected pore architectures

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