Monodispersed, ultrathin NiPt hollow nanospheres with tunable diameter and composition via a green chemical synthesis

Abstract

Monodisperse NiPt hollow nanospheres with tunable sizes were synthesized by a green chemical synthesis, which have excellent electrocatalytic properties.

Atomic-scale restructuring of hollow PtNi/C electrocatalysts during accelerated stress tests

“…In the "hard templating" method, an inorganic or organic sacrificial template is first produced, coated with the metal of interest, and then selectively removed to obtain a hollow nanostructure [1][2][3][4][5][6][7][8][9][10]. In the "soft templating" method, cooperative interactions between inorganic or organic species such as micelles, reverse micelles, and microemulsions are used to design the porous materials [5].…”

Tuning the Performance and the Stability of Porous Hollow PtNi/C Nanostructures for the Oxygen Reduction Reaction

“…In a typical synthesis, Pt(NH 3 ) 4 Cl 2 · (H 2 O), NiCl 2 ·(6H 2 O), and NaBH 4 are mixed with Vulcan XC72R, ethanol, and deionized water (Figure 1). Based on recent results from Shan et al, 53 Ni−B/C compounds are believed to form first, therefore acting as sacrificial templates for the deposition of Pt atoms via galvanic replacement. The deposition of Pt atoms likely proceeds on preferential regions of the sacrificial Ni-rich/C nanoparticles yielding nanometresized PtNi/C clusters, which grow in close proximity to each other, and coalesce as the reduction of Pt 2+ ions proceeds.…”

Hollow Pt Nanostructure‐decorated MWNT Electrode for Amperometric Hydrogen Detection

“…Recently, hollow nanostructures of noble metals have received a lot of attention since they exhibit higher surface area, lower density, and more reduced cost due to the inside cavity than compact counterparts . The benefit of these hollow nanostructures has been proved in many application fields such as fuel cells, electrochemical catalysis, and lithium‐ion batteries.…”