Larder, Ryan, Bennett, Thomas, Blankenship, Leo, Fernandes, Jesum, Husband, Bethany, Atkinson, Rachel, Derry, Matthew, Toolan, Daniel T.W., Centurion, Higor, Topham, Paul, Goncalves, Renato, Taresco, Vincenzo and Howdle, Steven M. (2021). Porous Hollow TiO2 Microparticles for Photocatalysis: Exploiting Novel ABC Triblock Terpolymer Templates Synthesised in Supercritical CO2. Polymer Chemistry, 12 (19), pp. 2904-2913.
Abstract
Reversible addition–fragmentation chain transfer (RAFT) mediated dispersion polymerisation in supercritical carbon dioxide (scCO2) is an efficient and green method for synthesising block copolymer microparticles with internal nanostructures. Here we report for the first time the synthesis of phase separated poly(methyl methacrylate-block-styrene-block-4-vinylpyridine) (PMMA-b-PS-b-P4VP) triblock terpolymer microparticles using a simple two-pot sequential synthesis procedure in scCO2, with high monomer conversions and no purification steps. The microparticles, produced directly and without further processing, show a complex internal nanostructure, appearing as a “lamellar with spheres” [L + S(II)] type morphology. The P4VP block is then exploited as a structure-directing agent for the fabrication of TiO2 microparticles. Through a simple and scalable sol–gel and calcination process we produce hollow TiO2 microparticles with a mesoporous outer shell. When directly compared to porous TiO2 particles fabricated using an equivalent PMMA-b-P4VP diblock copolymer, increased surface area and enhanced photocatalytic efficiencies are observed.
Publication DOI: | https://doi.org/10.1039/D1PY00334H |
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Divisions: | College of Engineering & Physical Sciences College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry College of Engineering & Physical Sciences > Aston Institute of Materials Research (AIMR) College of Engineering & Physical Sciences > Aston Institute of Urban Technology and the Environment (ASTUTE) College of Engineering & Physical Sciences > Aston Polymer Research Group Aston University (General) |
Additional Information: | This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Funding: Engineering and Physical Science Research Council (EPSRC) for their support of this project, as part of the Low Dimensional Materials and Interfaces (LDMI) doctoral training programme (EP/N50970X/1) |
Uncontrolled Keywords: | Bioengineering,Biochemistry,Organic Chemistry,Polymers and Plastics |
Publication ISSN: | 1759-9962 |
Last Modified: | 14 Oct 2024 12:53 |
Date Deposited: | 27 Apr 2021 14:41 |
Full Text Link: | |
Related URLs: |
https://pubs.rs ... 1/py/d1py00334h
(Publisher URL) http://www.scop ... tnerID=8YFLogxK (Scopus URL) |
PURE Output Type: | Article |
Published Date: | 2021-05-21 |
Published Online Date: | 2021-04-22 |
Accepted Date: | 2021-04-21 |
Authors: |
Larder, Ryan
Bennett, Thomas Blankenship, Leo Fernandes, Jesum Husband, Bethany Atkinson, Rachel Derry, Matthew ( 0000-0001-5010-6725) Toolan, Daniel T.W. Centurion, Higor Topham, Paul ( 0000-0003-4152-6976) Goncalves, Renato Taresco, Vincenzo Howdle, Steven M. |