| Title: | Designing a Nanoscale Three-phase Electrochemical Pathway to Promote Pt-catalyzed Formaldehyde Oxidation |
| Author(s): | Xu J; Xiao X; Zhang Z; Wu Y; Boyle DT; Lee HK; Huang W; Li Y; Wang H; Li J; Zhu Y; Chen B; Mitch W; Cui Y; |
| Address: | "Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States. Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, United States. Department of Mechanical Engineering, University of California, Santa Barbara, California 93106, United States. Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China. Department of Civil and Environmental Engineering, Stanford University, Stanford, California 94305, United States. Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States" |
| DOI: | 10.1021/acs.nanolett.0c03560 |
| ISSN/ISBN: | 1530-6992 (Electronic) 1530-6984 (Linking) |
| Abstract: | "Gas-phase heterogeneous catalysis is a process spatially constrained on the two-dimensional surface of a solid catalyst. Here, we introduce a new toolkit to open up the third dimension. We discovered that the activity of a solid catalyst can be dramatically promoted by covering its surface with a nanoscale-thin layer of liquid electrolyte while maintaining efficient delivery of gas reactants, a strategy we call three-phase catalysis. Introducing the liquid electrolyte converts the original surface catalytic reaction into an electrochemical pathway with mass transfer facilitated by free ions in a three-dimensional space. We chose the oxidation of formaldehyde as a model reaction and observed a 25000-times enhancement in the turnover frequency of Pt in three-phase catalysis as compared to conventional heterogeneous catalysis. We envision three-phase catalysis as a new dimension for catalyst design and anticipate its applications in more chemical reactions from pollution control to the petrochemical industry" |
| Keywords: | formaldehyde heterogeneous catalysis three-phase catalysis volatile organic compounds; |
| Notes: | "PubMed-not-MEDLINEXu, Jinwei Xiao, Xin Zhang, Zewen Wu, Yecun Boyle, David T Lee, Hiang Kwee Huang, Wenxiao Li, Yuzhang Wang, Hansen Li, Jun Zhu, Yangying Chen, Baoliang Mitch, William Cui, Yi eng 2020/11/18 Nano Lett. 2020 Dec 9; 20(12):8719-8724. doi: 10.1021/acs.nanolett.0c03560. Epub 2020 Nov 17" |
