Well-defined PtNiCo core–shell nanodendrites with enhanced catalytic performance for methanol oxidation

Abstract

Uniform trimetallic PtNiCo core–shell nanodendrites, composed of a PtNiCo core and dendritic PtCo shell, were synthesized and their enhanced catalytic activities for methanol oxidation can be attributed to the interaction of Pt, Ni, and Co, and their highly ordered dendritic structure.

Facile Synthesis Of Composition‐Controllable PtPdAuTe Nanowires As Superior Electrocatalysts For Direct Methanol Fuel Cells

“…2020, 15, 9 8-105 www.chemasianj.org upshiftso fP tB El ead to its electronic structure changes anddband center position shifts. [42] This benefits the desorption of carbon intermediates on Pt surface and protects Pt from poisoning. [43] To gain insighti nto the impact of Te NWs and ethylene glycol (EG) during the synthetic process, H 2 PtCl 6 with only EG or the aqueous solutiono fT eN Ws reacted at 50 8Cf or 8h,r espectively.A ss hown in Figure S5 (A) (left), the H 2 PtCl 6 solution with only EG remains the original color,and there are no nanoparticles in the beaker.W hen the aqueous solution of Te NWs were added to the H 2 PtCl 6 solution, al arge number of black precipitates were obtained ( Figure S5 (A), right).…”

Facile Synthesis of PdCu Echinus‐Like Nanocrystals as Robust Electrocatalysts for Methanol Oxidation Reaction

“…A large number of electrocatalysts with different structures have been fabricated such as nanowires, nanocages, nanobowls, nanosponges, nanosheets, nanocubes, nanoporous and so forth . The echinus‐like or dendrite‐like nanostructures with enormous branches have caught much attention of researchers due to their various merits including high permeability, little inclination to aggregate, high specific surface areas . For instance, Shu's group recently fabricated the hollow PdCuCo nanoparticles at the cost of Co nanospheres through the galvanic displacement reaction.…”

“…[24][25][26][27][28][29][30][31] The echinus-like or dendrite-like nanostructures with enormousb ranches have caughtm uch attention of researchers due to their variousm erits including high permeability,l ittle inclination to aggregate, high specifics urface areas. [32][33][34][35] For instance, Shu's group recently fabricated the hollow PdCuCo nanoparticles at the cost of Co nanospheres through the galvanic displacementr eaction. The prepared hollow PdCuCon anoparticles with echinus-liken anoarchitectures exhibit eminent electrocatalytic properties towarde thanol oxidation reaction.…”

Trimetallic PdCuAu Nanoparticles for Temperature Sensing and Fluorescence Detection of H2O2 and Glucose

“…At present, Pt-based nanomaterials are the most widely used catalysts because of their high catalytic activity in cathodic and anodic reactions (Khan et al, 2015;Wang et al, 2018). Consequently, tri-metallic Pt-based alloys for instance Pt-Ni-Cu (Tang et al, 2018), Pt-Ni-Co (Huang et al, 2014;Sriphathoorat et al, 2016), Pt-Pd-Cu (Yin et al, 2012;Tian et al, 2017), Pt-Pd-Co (Cho et al, 2014;Song et al, 2015), Pt-Fe-Ni (Li and Chan, 2013), Pt-Fe-Co (Hwang et al, 2011), and Pt-Pd-Au (Li et al, 2018) aroused the attention of many studies. However, due to the low cost and high catalytic activity of Pd-based catalysts, there are few studies on Pd-based catalysts (Guo et al, 2014;Jiang et al, 2015;Xu et al, 2015;Yousaf et al, 2017a), therefore, Pdbased catalysts are the most promising substitute for Pt-based catalysts (Xu et al, 2015;Yousaf et al, 2017a;Wang et al, 2018).…”