Pt nanoparticles supported on non-carbon titanium chromium nitride nanotubes with high activity and durability for methanol oxidation reaction
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A hybrid titanium chromium nitride nanotube (Ti0.95Cr0.05N NT) support was prepared by a facile synthesis procedure and further used as support for Pt nanoparticles (Pt/Ti0.95Cr0.05N NTs). The catalyst was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and nitrogen absorption/desorption, which show that the Pt/Ti0.95Cr0.05N NTs are formed with homogeneous cohesively attached nitride nanotube crystals. The X-ray photoelectron spectroscopy (XPS) reveals that the interaction between Ti0.95Cr0.05N NTs and Pt nanoparticles is enhanced due to the Cr element doping. Furthermore, the electrochemical experiments demonstrate that Ti0.95Cr0.05N NT-supported Pt catalyst exhibits enhanced catalytic activity and durability for methanol electrooxidation compared with traditional Pt/C catalyst. The experimental dates indicate that the excellent stability and durability of Pt/Ti0.95Cr0.05N NTs toward methanol electrochemical oxidation might be mainly ascribed to the synergistic effect introduced by Cr doping and the tubular nanostructures. The above results indicate that Ti0.95Cr0.05N NTs as support have a promising future in direct methanol fuel cells.
KeywordsTitanium chromium nitride nanotubes Methanol oxidation reaction Enhanced stability Direct methanol fuel cells
This work was financially supported by the Natural Science Foundation of Guangdong Province, China (No. 2016A030313704) and Science and Technology Planning Project of Guangdong Province, China (No. 2016A010103035, No. 2016B020240003).
- 12.Suntivich J, Xu Z, Carlton CE, Kim J, Han B, Lee SW, Bonnet N, Marzari N, Allard LF, Gasteiger HA, Hamad-Schifferli K, Shao-Horn Y (2013) Surface composition tuning of Au-Pt bimetallic nanoparticles for enhanced carbon monoxide and methanol electro-oxidation. J Am Chem Soc 135(21):7985–7991CrossRefGoogle Scholar
- 22.Zhao L, Wang L, Yu P, Zhao D, Tian C, Feng H, Ma J, Fu H (2015) A chromium nitride/carbon nitride containing graphitic carbon nanocapsule hybrid as a Pt-free electrocatalyst for oxygen reduction. ChemComm 51:12399–12402Google Scholar
- 23.Zhao W, DiSalvo FJ (2015) Direct access to macroporous chromium nitride and chromium titanium nitride with inverse opal structure. ChemComm 51:4876–4879Google Scholar
- 28.Yang M, Cui Z, DiSalvo FJ (2012) Mesoporous vanadium nitride as a high performance catalyst support for formic acid electrooxidation. ChemComm 48:10502–10504Google Scholar
- 29.Liu G, Pan Z, Zhang B, Xiao J, Xia G, Zhao Q, Shi S, Hu G, Xiao C, Wei Z, Xu Y (2017) A novel TiN coated CNTs nanocomposite CNTs@TiN supported Pt electrocatalyst with enhanced catalytic activity and durability for methanol oxidation reaction. Int J Hydrog Energy 42(17):12467–12476CrossRefGoogle Scholar
- 35.Shimizu K, Francis Cheng I, Wai CM (2009) Aqueous treatment of single-walled carbon nanotubes for preparation of Pt–Fe core–shell alloy using galvanic exchange reaction: selective catalytic activity towards oxygen reduction over methanol oxidation. Electrochem Commun 11(3):691–694CrossRefGoogle Scholar