synthesis of hollow pt-ni nanoboxes for highly

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Bunched nanospheres The Pt-Ni BNSs were synthesized in nearly yield from platinum(II) acetylacetonate [Pt(acac) 2] nickel(II) acetylacetonate [Ni(acac) 2] cetyltrimethylammonium bromide (CTAB) and oleylamine mixtures that were ultrasonicated and then heated at 180 C for several hours (see supplementary materials and fig S1) ) Composition studies included Pt 3 Ni Pt 2 Ni Pt 1 5 Ni Synthesis of hollow CoP nanospheres core-shell Ni 2 P nanospheres shattered Cu 3 P/C nanoparticles and hollow CoP/C polyhedrons The as-synthesized phytic acid–treated Co-glycerate Ni-glycerate Cu-MOF and ZIF-67 were transferred into a tube furnace and carbonized in a flowing H 2 (5%)/Ar atmosphere with the same calcination procedure and time for NFP/C-3

[PDF] Optical properties of Pd

2020/8/22Silver nanocubes dispersed in water were transformed into Pd-Ag or Pt-Ag nanoboxes by adding either Na(2)PdCl(4) or Na(2)PtCl(4) By controlling the amount of noble metal salt added and therefore the molar ratio of Na(2)PdCl(4) or Na(2)PtCl(4) to Ag we could tune the surface plasmon resonance peak of the nanostructures across the entire visible spectrum from 440 to 730 nm

2015/5/7Using Te nanowires as a sacial template we developed a facile wet-chemical method for the synthesis of bimetallic PtCu nanowires The as-prepared PtCu nanowires possess a porous structure and high aspect ratio Transmission electron microscopy X-ray diffraction energy dispersive spectroscopy energy dispersive X-ray spectrum elemental mapping inductively coupled plasmamass

Similarly Yu and co-workers have reported the preparation of metal sulfides (M = Ni Cu Mn) box-in-box hollow structures using SiO 2 nanoboxes as templates [] The SiO 2 nanobox templates were firstly synthesized by templating against cubic Fe 2 O 3 nanostructures

Hollow octahedral and cuboctahedral nanocrystals of ternary Pt–Ni–Au alloys Meital Shviro † Shlomi Polani† and David Zitoun* Hollow particles of Pt–Ni–Au alloys have been prepared through a two-step reaction with the synthesis of NiPt octahedral andIII)

2015/5/7Using Te nanowires as a sacial template we developed a facile wet-chemical method for the synthesis of bimetallic PtCu nanowires The as-prepared PtCu nanowires possess a porous structure and high aspect ratio Transmission electron microscopy X-ray diffraction energy dispersive spectroscopy energy dispersive X-ray spectrum elemental mapping inductively coupled plasmamass

Controlled synthesis and characterization of hollow flower

Synthesis of 3D hollow silver flower-like nanostructures The hollow flower-like structures were synthesized by the chemical reduction of AgNO 3 in aqueous solution Briefly a round-bottom flask was cleaned thoroughly with aqua regia (3:1 hydrogen chloride:nitric acid) then rinsed with DDI water

However the synthesis of hollow nanostructured metal phosphides especially nonspherical hollow nanostructures is rarely reported Herein we develop a metal–organic framework (MOF)‐based strategy to synthesize carbon incorporated Ni–Co mixed metal phosphide nanoboxes (denoted as NiCoP/C)

2020/8/22Silver nanocubes dispersed in water were transformed into Pd-Ag or Pt-Ag nanoboxes by adding either Na(2)PdCl(4) or Na(2)PtCl(4) By controlling the amount of noble metal salt added and therefore the molar ratio of Na(2)PdCl(4) or Na(2)PtCl(4) to Ag we could tune the surface plasmon resonance peak of the nanostructures across the entire visible spectrum from 440 to 730 nm

2019/12/4Pt doped SnO2 mesoporous hollow nanosphere sensors reach the maximum response of 3-hydroxy-2-butanone at 250 C Remarkably sensors based on SnO2 mesoporous hollow nanospheres with 0 16 wt% Pt dopant exhibit excellent sensitivity (Rair/Rgas = 48 69) and short response/recovery time (11/20 s respectively) to 10 ppm 3-hydroxy-2-butanone at the optimum working temperature

2014/2/28Bar chart showing the specific activities of Pt/C Pt poly-crystal electrode IL-encapsulated Pt3Ni nanoframes/C PtNi-Meso-TF and Pt3Ni(111)-Skin electrode and the corresponding improvement factors vs Pt/C Source: Chen et al Supplementary Materials Click to enlarge A team led by researchers at Berkeley and Argonne National Labs have discovered a new class

Similarly Yu and co-workers have reported the preparation of metal sulfides (M = Ni Cu Mn) box-in-box hollow structures using SiO 2 nanoboxes as templates [] The SiO 2 nanobox templates were firstly synthesized by templating against cubic Fe 2 O 3 nanostructures

Synthesis of the Hierarchical ZnOTiO 2 Hollow Spheres The preparation of ZnOTiO 2 composites was based on a very facile one-step template-free hydrothermal method at ambient conditions In a typical procedure 0 015 mol of Ti(SO 4) 2 0 015 mol of Zn(NO 3) 2 6H 2 O 0 015 mol of NH 4 F and 0 06 mol of CO(NH 2) 2 were added to a beaker with 50 mL deionized water

Hollow nanostructures have attracted increasing research interest in electrochemical energy storage and conversion owing to their unique structural features However the synthesis of hollow nanostructured metal phosphides especially nonspherical hollow nanostructures is rarely reported Herein we develop a metal-organic framework (MOF)-based strategy to synthesize carbon incorporated Ni-Co

Pt and Pt–Ni(OH)2 Electrodes for the Hydrogen Evolution

The design and synthesis of Pt‐based electrocatalysts for the hydrogen evolution reaction (HER) are of great importance for the successful development of hydrogen‐based alternative energy technologies Although Pt is considered to be the most active catalyst for

2012/12/15This catalytic activity of the hollow Pt–Ni–graphene nanocatalysts is also comparable or higher than those of previously reported Pt-based catalysts such as mesoporous Pt (460 mA/mg Pt for 1 M methanol) Pt–Pd (376 mA/mg Pt) hollow mesoporous Pt )

Bunched nanospheres The Pt-Ni BNSs were synthesized in nearly yield from platinum(II) acetylacetonate [Pt(acac) 2] nickel(II) acetylacetonate [Ni(acac) 2] cetyltrimethylammonium bromide (CTAB) and oleylamine mixtures that were ultrasonicated and then heated at 180 C for several hours (see supplementary materials and fig S1) ) Composition studies included Pt 3 Ni Pt 2 Ni Pt 1 5 Ni

Synthesis of the Highly Accessible and pH-Responsive Hollow-Core ZIF-8 (HCZIF-8) using Polystyrene as the Hard Template and Its Application for Cancer Therapeutic Drug Delivery 49 776 000 5 Dr Muhammad Idham Darussalam Mardjan S Si M Sc Male

Platinum (Pt) is an excellent catalyst for the oxygen-reduction reaction (ORR) in fuel cells and electrolyzers but it is too expensive and scarce for widespread deployment even when dispersed as Pt nanoparticles on carbon electrode supports (Pt/C) Alternatively Chen et al (p [1339][1] published online 27 February see the Perspective by [Greer][2] ) made highly active ORR catalysts by

Hollow Silicalite-1 and ZSM-5 zeolites with hierarchical porous shells have been synthesized by using a dissolution-recrystallization method The morphology structure and acidity of these zeolites supported Pt catalysts were characterized by XRD FT-IR MAS-SSNMR FE-SEM FE-TEM N2-BET XPS NH3-TPD and CO pulse chemisorption Compared to the conventional ZSM-5 supported Pt catalyst the

2012/1/1The ECSAs of the HMPNNs are about 88 5 m 2 /g Pt which were about 1 4 and 1 7 times that of solid Pt–Ni nanoparticles (63 7 m 2 /g Pt) and commercial Pt catalysts (53 3 m 2 /g Pt) respectively Such a large ECSAs of HMPNNs is believed to be originated from their hollow mesoporous structures which have been created on both the exterior and interior areas of the nanospheres

(4) Template-free synthesis of platinum hollow-opened structures in deep-eutectic solvents and their enhanced performance for methanol electrooxidation Electrochimica Acta 2020-01 (5) Sulfonated cobalt phthalocyanine-derived Co-N-S tridoped carbon nanotubes as platinum catalyst supports for highly efficient methanol electrooxidation Applied Surface Science 2020-01