Doping of carbon nanotubes with aluminum atom to improve Pt adsorption

The Effect of Doping and Confinement on the Adsorption of Pt on CNTs upon Be, B, N and O Doping: A Theoretical Study

“…Once the Pt@CNT system adopts the higher electronic state (triplet), Pt prefers to locate at the center of CNT channel as a free atom with E b = 0. Owing to the difference in atomic radii and electron affinity of these doping atoms, the p conjugation network of CNTs with different dopants would be distorted in different ways [46][47][48][49][50][51]. Consequently, doping could not only alter the binding strength of Pt on CNTs, but also influence the adsorption configuration depending on the kinds of dopants.…”

“…To our knowledge, Pt atom and clusters on the external surface of pristine, defective and heteroatom doping CNTs have been extensively studied from theoretical views [43][44][45][46][47][48][49][50][51], in order to unravel the underlying interaction patterns between Pt and CNTs. However, few theoretical studies have contributed to understanding the adsorption and electronic properties of metal NPs on the internal surface of CNTs, especially doping CNTs, though great experimental advances have been achieved in these metal-in-CNT complexes [10-21, 31, 32].…”

Greatly enhanced adsorption of platinum on periodic graphene nanobuds: A first-principles study

“…However, it would require a way to firmly retain this precious metal according to the high catalyst expense caused by the exclusive use of platinum and platinum-based catalysts in the fuel cell electrodes [2,3]. Furthermore, in order to achieve a higher metal catalyst exploitation, besides the dramatic increase of Pt electro-catalytic activities and poison tolerance, the choice of an appropriate supporting material with a high specific surface area, which generally enhances metal dispersion, is another alternative method despite the alloying of Pt with the other transition metals [4,6]. Therefore, the activity of the catalyst could be prolonged, if suitable support materials are recognized [7].…”

“…They have been used in a wide range of applications including transportation, power stations, portable electronic devices such as cell phones, PCs, laptops, tablets, notebooks as well as military industry in recent decades [1][2][3][4].…”

Effect of doping with Al/B on the sensitivity of a metallic carbon nanotube to CO2

“…Wang et al [15] reported that Al-doped SWCNT presents high sensitivity to CO compared to pure SWCNT. Ganji et al [25] found that Pt adsorption ability of Al-CNTs is stronger than that of B and N doped CNTs. However, to the best of our knowledge, there is no report for adsorption of CO2 on the surface of Aldoped (6,6) CNT.…”