Selective Alcohol Electrooxidation by ZIF-8 Functionalized Pt/Carbon Catalyst
Essbach C, Senkovska I, Unmuessig T, Fischer A, Kaskel S (2019)
Publication Type: Journal article
Publication year: 2019
Journal
Book Volume: 11
Pages Range: 20915-20922
Journal Issue: 23
Abstract
Highly selective electrooxidation catalysts were synthesized by functionalizing a commercially available reference electrooxidation catalyst (Pt/Vulcan XC 72R) with a coating of the highly hydrophobic porous zeolitic imidazolate framework ZIF-8, an adsorbent with high affinity for the extraction of aliphatic alcohols from water. According to cyclovoltammetric studies in alkaline media at 25 °C, the ZIF-8 functionalized catalyst shows a high selectivity for the electrooxidation of small alcohols such as ethanol and methanol over more hydrophobic alcohols (n-butanol, n-propanol). In contrast, the noncoated reference catalyst (Pt/Vulcan XC 72R) oxidizes all investigated alcohols with comparable current densities. Tafel curves confirm these observations and indicate a limited conversion of long chain alcohols, especially n-butanol, caused by the high affinity of the ZIF-8 for this molecule resulting in significant diffusion limitations.
Involved external institutions
Germany (DE)How to cite
APA:
Essbach, C., Senkovska, I., Unmuessig, T., Fischer, A., & Kaskel, S. (2019). Selective Alcohol Electrooxidation by ZIF-8 Functionalized Pt/Carbon Catalyst. ACS Applied Materials and Interfaces, 11(23), 20915-20922. https://doi.org/10.1021/acsami.9b06122
MLA:
Essbach, Claudia, et al. "Selective Alcohol Electrooxidation by ZIF-8 Functionalized Pt/Carbon Catalyst." ACS Applied Materials and Interfaces 11.23 (2019): 20915-20922.
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