Favaro, Marcelo Alves and Ditz, Daniel and Yang, Jin and Bergwinkl, Sebastian and Ghosh, Ashta C. and Stammler, Michael and Lorentz, Chantal and Roeser, Jerome and Quadrelli, Elsje Alessandra and Thomas, Arne and Palkovits, Regina and Canivet, Jerome and Wisser, Florian M. (2022) Finding the Sweet Spot of Photocatalysis-A Case Study Using Bipyridine-Based CTFs. ACS APPLIED MATERIALS & INTERFACES, 14 (12). pp. 14182-14192. ISSN 1944-8244, 1944-8252
Full text not available from this repository. (Request a copy)Abstract
Covalent triazine frameworks (CTFs) are a class of porous organic polymers that continuously attract growing interest because of their outstanding chemical and physical properties. However, the control of extended porous organic framework structures at the molecular scale for a precise adjustment of their properties has hardly been achieved so far. Here, we present a series of bipyridine-based CTFs synthesized through polycondensation, in which the sequence of specific building blocks is well controlled. The reported synthetic strategy allows us to tailor the physicochemical features of the CTF materials, including the nitrogen content, the apparent specific surface area, and optoelectronic properties. Based on a comprehensive analytical investigation, we demonstrate a direct correlation of the CTF bipyridine content with the material features such as the specific surface area, band gap, charge separation, and surface wettability with water. The entirety of these parameters dictates the catalytic activity as demonstrated for the photocatalytic hydrogen evolution reaction (HER). The material with the optimal balance between optoelectronic properties and highest hydrophilicity enables HER production rates of up to 7.2 mmol/(h.g) under visible light irradiation and in the presence of a platinum cocatalyst.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | COVALENT TRIAZINE FRAMEWORKS; STRUCTURE-PROPERTY RELATIONSHIPS; CONJUGATED MICROPOROUS POLYMERS; ORGANIC FRAMEWORK; HYDROGEN EVOLUTION; CARBON NITRIDE; SURFACE-AREA; WATER; ADSORPTION; OXIDATION; covalent triazine framework; photocatalysis; hydrogen evolution reaction; molecular control; bipyridine |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Feb 2024 12:00 |
| Last Modified: | 08 Feb 2024 12:00 |
| URI: | https://pred.uni-regensburg.de/id/eprint/57498 |
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