Liquid‐Phase Catalytic Exchange of Hydrogen Isotopes over Ion Sputtering Platinum on Superhydrophobic Coatings
Source abstract
Abstract
Abstract Liquid‐phase catalytic exchange (LPCE) of hydrogen isotopes has extensive application in upgrading of recycled water and wastewater treatment. This low‐temperature catalytic exchange requires hydrophobic catalysts for keeping high exchange efficiency and catalytic stability. To eliminate diffusional influences in conventional porous catalysts, we designed a flat catalyst coating with fully exposed platinum (Pt) active sites by two steps. The hydrophobic coating was firstly established by superhydrophobic silica nanospheres (SSNs) and then Pt nanoparticles were dispersed on the surface of coating by ion sputtering. By adjusting the time of ion sputtering, the catalytic exchange efficiency of optimized catalyst coating (50‐Pt/SSNs/PDMS) improved up to 86% at 60 °C and maintained stability for at least 5 h, behaving high catalytic exchange efficiency and good stability. Besides, the turnover frequency of the 50‐Pt/SSNs/PDMS was 1.7 times than that of “PDMS+Pt/SSNs” prepared by “glue+power” method. The “step by step” strategy can effectively improve the utilization of Pt and provide a new idea for the preparation of Pt‐based hydrophobic catalysts.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Fusion materials and technologies · Advanced Data Storage Technologies · Chemical Synthesis and Characterization
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Chemical Engineering and Technology Tianjin University Tianjin 300350 P. R. China
Department of Chemical Engineering Tianjin Renai College Tianjin 301636 P. R. China
Funding
National Natural Science Foundation of China
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