Amine-Functionalized Natural Halloysite Nanotubes Supported Metallic (Pd, Au, Ag) Nanoparticles and Their Catalytic Performance for Dehydrogenation of Formic Acid

• Published in: Nanomaterials (Basel, Switzerland) Switzerland), 2022-07, Vol.12 (14), p.2414
• Main Authors: Song, Limin, Tan, Kaiyuan, Ye, Yingyue, Zhu, Baolin, Zhang, Shoumin, Huang, Weiping
• Format: Article
• Language: English
• Subjects: Acids; Aminopropyltriethoxysilane; Carbon; Catalysts; Chemical plants; Dehydrogenation; Energy; Formic acid; Fourier transforms; Functional groups; Gold; halloysite nanotube; Hydrogen; Hydrogen-based energy; Metal particles; Nanoparticles; Nanotechnology; Nanotubes; Palladium; Renewable energy; Renewable resources; Room temperature; Selectivity; Silver; Sodium; Spectrum analysis; Sustainable development; γ-aminopropyltriethoxysilane
• ISSN: 2079-4991; 2079-4991
• DOI: 10.3390/nano12142414

In today’s age of resource scarcity, the low-cost development and utilization of renewable energy, e.g., hydrogen energy, have attracted much attention in the world. In this work, cheap natural halloysite nanotubes (HNTs) were modified with γ-aminopropyltriethoxysilane (APTES), and the functionalized HNTs were used as to support metal (Pd, Au, Ag) catalysts for dehydrogenation of formic acid (DFA). The supports and fabricated catalysts were characterized with ICP, FT-IR, XRD, XPS and TEM. The functional groups facilitate the anchoring of metal particles to the supports, which brings about the high dispersion of metallic particles in catalysts. The catalysts show high activity against DFA and exhibit selectivity of 100% toward H2 at room temperature or less. The interactions between active centers and supports were investigated by evaluation and comparison of the catalytic performances of Pd/NH2-HNTs, PdAg/NH2-HNTs and PdAu/NH2-HNTs for DFA.