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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Fletcher, Philip J.
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Molecularly rigid porous polyamine host enhances barium titanate catalysed H 2 O 2 generation †
- 2024Molecularly Rigid Porous Polyamine Host Enhances Barium Titanate Catalysed H2O2 Generation
- 2021Defect-Engineered β-MnO2-δ Precursors Control the Structure-Property Relationships in High-Voltage Spinel LiMn1.5Ni0.5O4-δcitations
- 2021Ionic Diode and Molecular Pump Phenomena Associated with Caffeic Acid Accumulated into an Intrinsically Microporous Polyamine (PIM-EA-TB)citations
- 2020Indirect (Hydrogen-Driven) Electrodeposition of Porous Silver onto a Palladium Membranecitations
- 2020Effects of dissolved gases on partial anodic passivation phenomena at copper microelectrodes immersed in aqueous NaClcitations
- 2020Linking the Cu(II/I) and the Ni(IV/II) Potentials to Subsequent Passive Film Breakdown for a Cu-Ni Alloy in Aqueous 0.5 M NaClcitations
- 2019Effects of Dissolved Gases on Partial Anodic Passivation Phenomena at Copper Microelectrodes Immersed in Aqueous NaCl
- 2019Polymer of Intrinsic Microporosity (PIM-7) Coating Affects Triphasic Palladium Electrocatalysiscitations
- 2018Polymer of Intrinsic Microporosity (PIM-7) Coating Affects Triphasic Palladium Electrocatalysiscitations
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article
Molecularly Rigid Porous Polyamine Host Enhances Barium Titanate Catalysed H2O2 Generation
Abstract
<p>Barium titanate (BTO) is well-known (as a photo- or sono/piezo-catalyst) to produce hydrogen peroxide via 2-electron reduction of oxygen in the presence of a sacrificial quencher, such as isopropanol. While barium titanate nanoparticles with a tetragonal crystal structure (piezoelectric) are particularly reactive, the recovery and reuse of these nano-catalysts from reactions can be difficult. Here, barium titanate nanoparticles of typically 200 nm to 600 nm diameter are embedded into a host film of a polymer of intrinsic microporosity (PIM-EA-TB). Due to molecular rigidity of the polymer, there is no capping effect, and the surface catalytic reaction occurs effectively with a catalyst embedded in the polymer. In this exploratory work, the catalytic formation of H<sub>2</sub>O<sub>2</sub> in the presence of isopropanol is investigated via kinetic studies and by electron paramagnetic resonance (EPR). Perhaps surprisingly, at a neutral pH the rate of the catalytic reaction is substantially increased when barium titanate is embedded into the polymer host and when the polymer is protonated. This is attributed here to a “kinetic cage effect” which exploits the tertiary amine in the polymer backbone with anodic and cathodic processes coupled into a pH neutral reaction.</p>