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Langmuir - Blodgett monolayers of SBA-15 particles with different morphologies
Malmö universitet, Fakulteten för hälsa och samhälle (HS), Institutionen för biomedicinsk vetenskap (BMV). Malmö universitet, Biofilms Research Center for Biointerfaces. Physical Chemistry, Lund University, Box 124, Lund, SE-221 00, Sweden.
Physical Chemistry, Lund University, Box 124, Lund, SE-221 00, Sweden.
Physical Chemistry, Lund University, Box 124, Lund, SE-221 00, Sweden.
2018 (Engelska)Ingår i: Microporous and Mesoporous Materials, ISSN 1387-1811, E-ISSN 1873-3093, Vol. 256, s. 32-38Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

This study presents an optimized protocol for the deposition of mesoporous SBA-15 particles with platelet-like and rod-like morphologies on different types of supporting substrates using LangmuirBlodgett methodology, resulting in the formation of monolayers with porosity orientation controlled by the type, i. e. the morphology, of particles used over large areas. The morphology of the SBA-15 particles and specifically their aspect ratio are essential for the orientation of the particles and, hence, the orientation of the intrinsic porosity. Deposition on a surface, establishes a layer of SBA-15 platelets with pores oriented perpendicular to the substrate, or a layer of SBA-15 rods with pores oriented parallel to the substrate. In both cases, the oriented SBA-15 particles can be deposited onto areas that are larger than square centimeter using Langmuir-Blodgett technique. SEM characterization demonstrates formation of uniform close-packed layer of oriented mesoporous SBA-15 silica particles. Additionally, the particles coverage of the surface is independent and unaffected by the type of supporting substrate, which allows convenient experimental performance without requiring surface or particle modifications. In conclusion, Langmuir Blodgett is a convenient technique for deposition of mesoporous SBA-15 particles with different morphology types in order to obtain a close-packed layer. The methodology is suitable to create large area sensors, used in; for instance, bio-sensing applications. (C) 2017 Elsevier Inc. All rights reserved.

Ort, förlag, år, upplaga, sidor
Elsevier, 2018. Vol. 256, s. 32-38
Nyckelord [en]
Mesoporous silica, Deposition, Pore orientation, Langmuir-Blodgett, Monolayer
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:mau:diva-5048DOI: 10.1016/j.micromeso.2017.07.049ISI: 000415781200005Scopus ID: 2-s2.0-85026462054Lokalt ID: 26549OAI: oai:DiVA.org:mau-5048DiVA, id: diva2:1401883
Tillgänglig från: 2020-02-28 Skapad: 2020-02-28 Senast uppdaterad: 2024-06-17Bibliografiskt granskad

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Falk, Yana Znamenskaya

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Institutionen för biomedicinsk vetenskap (BMV)Biofilms Research Center for Biointerfaces
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Microporous and Mesoporous Materials
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