Ternary nanocomposite designed by MWCNT backbone PPy/Pd for efficient catalytic approach toward reduction and oxidation reactions
| Autor: | Nithya Pandiyan, Selvam Samayanan, Sundrarajan Mahalingam, Balaji Murugesan, Jegatheeswaran Sonamuthu |
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| Rok vydání: | 2018 |
| Předmět: |
Nanocomposite
Materials science General Chemical Engineering chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry Polypyrrole 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry Chemical engineering Mechanics of Materials Fourier transform infrared spectroscopy 0210 nano-technology Ternary operation Palladium |
| Zdroj: | Advanced Powder Technology. 29:3173-3182 |
| ISSN: | 0921-8831 |
| DOI: | 10.1016/j.apt.2018.08.020 |
| Popis: | An induced active palladium nanoparticle (Pd NP) on multiwall carbon nanotube with polypyrrole matrix (MWCNT/PPy/Pd) was prepared and their physiochemical properties were investigated. The XPS (X-ray photoelectron spectroscopy) analysis showed the important amine and imine linkage at 400.3 eV and 398.8 eV for the interaction of the polymer matrix. FTIR spectroscopy proved the polypyrrole stretching frequencies and palladium nitrogen interaction (Pd-N at 1618 cm−1). TGA-DSC analysis showed that 51% of polymer composite remained up to 1000 °C. The developed nanocomposite (NC) catalytic ability was tested in p-nitrophenol reduction and methanol oxidation studies. The kinetic rate constant (k) was 0.193 min−1 and NC exhibited good reusability up to 10 cycles for p-nitrophenol reduction. The electrochemical measurements indicate that MWCNT/PPy/Pd has a significantly high active surface area (3.13 cm−2), low onset potential and high current density. MWCNT/PPy/Pd ternary NC is a capable candidate for both electro-oxidation of methanol and a reduction of 4-nitrophenol. |
| Databáze: | OpenAIRE |
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