Stabilizing cyanosols: amorphous cyanide bridged transition metal polymer nanoparticles

Burgess, Christine M.; Yao, Nan; Bocarsly, Andrew Bruce

doi:10.1039/b911682f

Cited by 9 publications

(5 citation statements)

References 32 publications

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“…At present, these cyanogels have attracted much attention in gas adsorption and alloy synthesis due to their unique microporous, auto-reductive and double-metallic properties. [65][66][67][68][69][70] However, the solution phase chemical synthesis of alloy nanoparticles using a cyanogel precursor is seldom reported up to now. Considering the three-dimensional (3D) characteristic backbone of the cyanogel, the solid nature of the cyanogel, and the uniform distribution of the two kinds of metal ions on the 3D backbone of the cyanogel at the atomic scale, we expect that alloy nanoparticles with a 3D structure can be easily obtained by using the cyanogel as reaction precursor via a simple NaBH 4 reduction method.…”

Section: Introductionmentioning

confidence: 99%

Platinum–Cobalt alloy networks for methanol oxidation electrocatalysis

et al. 2012

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Three-dimensional (3D) platinum-cobalt alloy networks nanostructures with a high alloying degree were synthesized through a room temperature wet-chemical synthetic method using the K 2 PtCl 4 /K 3 Co(CN) 6 cyanogel as reaction precursor in the absence of surfactants and templates. The size, morphology and surface composition of platinum-cobalt alloy networks nanostructures were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectrum (EDS), selected area electron diffraction (SAED), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The 3D backbone structure and double-metallic property of the K 2 PtCl 4 /K 3 Co(CN) 6 cyanogel are responsible for the 3D structure and the high alloying degree of the as-prepared products, respectively. Compared to the pure Pt nanoparticles, 3D platinum-cobalt alloy networks nanostructures exhibit superior electrocatalytic activity and stability for the methanol oxidation reaction (MOR), which is ascribed to their unique 3D structure and alloy properties.

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Section: Introductionmentioning

confidence: 99%

Platinum–Cobalt alloy networks for methanol oxidation electrocatalysis

et al. 2012

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“…A few studies have reported on colloids of Pt/polycyanometallate-based particles mainly for catalysis purposes, but stabilizers were used to stop their evolution to cyanogels. 20,30…”

Section: Resultsmentioning

confidence: 99%

“…A few studies have reported on colloids of Pt/polycyanometallate-based particles mainly for catalysis purposes, but stabilizers were used to stop their evolution to cyanogels. 20,30 In our case, the one-step reaction was carried out in pure water under easily reproducible conditions. A Pt(II) salt was used in the experimental procedure to incorporate a high-Z metal in the NP.…”

Section: Synthesis and Characterization Of Pt-based Npsmentioning

confidence: 99%

Ultra-small platinum-based coordination nanoparticles for radiotherapy

George,

Fétiveau,

Porcel

et al. 2023

Mater. Adv.

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“…The cyanogel-induced synthesis of nanoelectrocatalysts can achieve a combination of these two advantages. The cyanogel-induced synthesis of Pd-based alloy catalysts has been demonstrated in previous studies [36], due to the special coordination pattern of cyanogel that allows the Pd and the other 3d-transition (M) atoms (such as Fe [37], Co [38], Ni [39][40][41], Rh [42], Pt [43] and Cu [44], etc.) to occupy specific positions along the cyanogel skeleton, thus, enabling a predictable morphological and electronic structure during liquid phase reduction, resulting in better long-term stability in electrochemical tests.…”

Section: Introductionmentioning

confidence: 89%

Cyanogel-Induced Synthesis of RuPd Alloy Networks for High-Efficiency Formic Acid Oxidation

et al. 2022

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For direct formic acid fuel cells (DFAFC), palladium (Pd)-based alloy catalysts with competitive morphology and elemental composition are essential to boost the performance of the formic acid oxidation reaction (FAOR) in the anode zone. Herein, we design and synthesize RuPdx alloy nano-network structures (ANs) via the facile wet-chemical reduction of Pd-Ru cyanogel (Pdx [Ru(CN)6]y·aH2O) as an effective electrocatalyst for the FAOR. The formation of Pd-Ru cyanogel depends on the facile coordination of K2PdCl4 and K3 [Ru(CN)6]. The unique structure of cyanogel ensures the presentation of a three-dimensional mesoporous morphology and the homogeneity of the elemental components. The as-prepared RuPd3 ANs exhibit good electrocatalytic activity and stability for the FAOR. Notably, the RuPd3 ANs achieve a mass-specific activity of 2068.4 mA mg−1 in FAOR, which shows an improvement of approximately 16.9 times compared to Pd black. Such a competitive FAOR performance of RuPd3 ANs can be attributed to the advantages of structure and composition, which facilitate the exposure of more active sites, accelerate mass/electron transfer rates, and promote gas escape from the catalyst layer, as well as enhance chemical stability.

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Stabilizing cyanosols: amorphous cyanide bridged transition metal polymer nanoparticles

Cited by 9 publications

References 32 publications

Platinum–Cobalt alloy networks for methanol oxidation electrocatalysis

Platinum–Cobalt alloy networks for methanol oxidation electrocatalysis

Ultra-small platinum-based coordination nanoparticles for radiotherapy

Cyanogel-Induced Synthesis of RuPd Alloy Networks for High-Efficiency Formic Acid Oxidation

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