Reducing Properties of Polymers in the Synthesis of Noble Metal Nanoparticles

Zhang, Anqi; Li-hui, Cai; Sui, Li; Qian, Dong−Jin; Chen, Meng

doi:10.1080/15583724.2013.776587

Cited by 72 publications

(50 citation statements)

References 121 publications

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“…Carboxyl, hydroxyl, and amine functional groups in the polymer have the ability to complex metal ions and metal nanoparticles [32]. Since the PEI block in the copolymer tends to adsorb the Au ions and AuNPs, AuNPs are entrapped at the sites between the cores and shells of the self-assembly aggregates, thus resulting in better stabilization of AuNPs.…”

Section: Synthesis Of Peg-pei-pcl-stabilized Aunpsmentioning

confidence: 99%

“…The amino residues in the copolymers PEG-PEI and PEG-PEI-PCL can induce gold-ion reduction. Polymers containing reducing groups such as amino or hydroxyl have been used both as reducing agents and as stabilizers in the preparation of metal nanoparticles [32]. The reduction ability of the copolymers is enhanced when the concentration of The concentration of Au in all the solutions is 250 lM.…”

Section: Synthesis Of Peg-pei-pcl-stabilized Aunpsmentioning

confidence: 99%

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ABC triblock copolymer-stabilized gold nanoparticles for catalytic reduction of 4-nitrophenol

Dai

Wang

2015

Journal of Catalysis

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Section: Synthesis Of Peg-pei-pcl-stabilized Aunpsmentioning

confidence: 99%

Section: Synthesis Of Peg-pei-pcl-stabilized Aunpsmentioning

confidence: 99%

ABC triblock copolymer-stabilized gold nanoparticles for catalytic reduction of 4-nitrophenol

Dai

Wang

2015

Journal of Catalysis

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“…The polyelectrolytes have found uses in a wide number of technical applications. These include ultrafiltration, [1][2][3] paper-making, wastewater treatment, [4][5][6] food industry, [7][8][9] biomaterials, [10][11][12][13][14][15][16] fuel cells [17][18][19][20][21][22][23] and nanotechnology, [24][25][26][27] just to mention a few. In all these application, the ionic groups or the ionic exchange process of polyelectrolytes is very important.…”

Section: Introductionmentioning

confidence: 99%

Polyelectrolytes with sulfonic acid groups useful in the synthesis and stabilization of Au and Ag nanoparticles

Herrera‐González

Caldera‐Villalobos

Garcı́a-Serrano

et al. 2016

Designed Monomers and Polymers

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Two novel polyelectrolytes were obtained by chemical modification of poly(4-acryloyloxybenzaldehyde) using o-and p-aminophenylsulfonic acid, the characterization shows a chemical modification of 24.38 and 63.33%, respectively. The study shows that the polyelectrolyte with sulfonic acid in para position reduces metal ions more rapidly than polyelectrolyte in ortho position. The obtained nanoparticles of Au and Ag were characterized by ultraviolet-visible absorption spectroscopy (UV-vis) and transmission electron microscopy. The results showed that these ionic polymers are not only capable of reducing gold and silver ions, but also can stabilize the nanoparticles in the colloidal solutions. With these polymers, the process of metallic ions reduction is very slow and they lead to the production of Au and Ag nanoparticles with quasi-spherical shapes which are stable in colloidal solutions for several months. The advantage of the method used here is that the reduction can be realized in water at room temperature.

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“…To determine whether or not the synthetic method is generally applicable to the synthesis of graphene‐supported PtPd nanocrystals, we conducted additional experiments using bifunctional materials other than PSS. In these experiments, poly(vinyl pyrrolidone) (PVP), PDDA, and poly(vinyl alcohol) (PVA) were chosen because of their abilities to stabilize GNP sheets in aqueous solutions and reduce metal ions . Figure S3 A–C (Supporting Information) shows TEM images of PtPd‐GNPs prepared using PVP, PDDA, and PVA instead of PSS under identical reaction conditions to those used for the syntheses involving PSS.…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of Composition‐Controlled Graphene‐Supported PtPd Alloy Nanocatalysts and Their Applications in Methanol Electro‐Oxidation and Lithium‐Oxygen Batteries

Bui

Kim

et al. 2017

Chemistry A European J

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A new and simple approach is reported for the synthesis of uniformly dispersed PtPd alloy nanocatalysts supported on graphene nanoplatelets (GNPs) (PtPd-GNPs) through the introduction of bifunctional materials, which can modify the GNP surface and simultaneously reduce metal ions. With the use of poly(4-styrenesulfonic acid), poly(vinyl pyrrolidone), poly(diallyldimethylammonium chloride), and poly(vinyl alcohol) as bifunctional materials, PtPd-GNPs can be produced through a procedure that is far simpler than previously reported methods. The as-prepared nanocrystals on GNPs clearly exhibit uniform PtPd alloy structures of around 2 nm in size, which are strongly anchored and well distributed on the GNP sheets. The Pt/Pd atomic ratio and loading density of the nanocrystals on the GNPs are controlled easily by changing the metal precursor feed ratio and the mass ratio of GNP to the metal precursor, respectively. As a result of the synergism between Pt and Pd, the as-prepared PtPd-GNPs exhibit markedly enhanced electrocatalytic performance during methanol electro-oxidation compared with monometallic Pt-GNP or commercially available Pt/C. Furthermore, the PtPd-GNP nanocatalysts also show greatly enhanced catalytic activity toward the oxygen reduction/evolution reaction in a lithium-oxygen (Li-O ) process, resulting in greatly improved cycling stability of a Li-O battery.

show abstract

Reducing Properties of Polymers in the Synthesis of Noble Metal Nanoparticles

Cited by 72 publications

References 121 publications

ABC triblock copolymer-stabilized gold nanoparticles for catalytic reduction of 4-nitrophenol

ABC triblock copolymer-stabilized gold nanoparticles for catalytic reduction of 4-nitrophenol

Polyelectrolytes with sulfonic acid groups useful in the synthesis and stabilization of Au and Ag nanoparticles

Facile Synthesis of Composition‐Controlled Graphene‐Supported PtPd Alloy Nanocatalysts and Their Applications in Methanol Electro‐Oxidation and Lithium‐Oxygen Batteries

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