Controllable Synthesis of Surface Pt-Rich Bimetallic AuPt Nanocatalysts for Selective Hydrogenation Reactions

Shao, Jieling; Liu, Miaomiao; Wang, Zizhu; Li, Kaijie; Bao, Bo; Zhao, Teng; Zhou, Shenghu

doi:10.1021/acsomega.9b02117

Cited by 14 publications

(12 citation statements)

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“…Peng et al [19] showed that the deposition of Pt-submonolayers on AuNPs and the Pt coverage-dependent electrocatalytic activity for MOR, also revealed that the low Pt coverage such as monoatomic-thick layers exhibited remarkably higher electrocatalytic performance and structural stability, whereas at higher Pt-shell thickness there was not any obvious increment found in the electrocatalytic activity. The surface Pt-rich bimetallic nanocatalysts with different Au/Pt atomic ratios have demonstrated enhanced hydrogenation selectivity or activity than AuPt alloys and monometallic Pt nanomaterials [20,21]. In addition, Au@Pt NPs showed the highest response current for the catalytic oxidation of glucose solution compared with those of Pt and Au NPs [22,23].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Au@Pt Core—Shell Nanoparticles as Efficient Electrocatalyst for Methanol Electro-Oxidation

et al. 2019

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Bimetallic Au@Pt nanoparticles (NPs) with Pt monolayer shell are of much interest for applications in heterogeneous catalysts because of enhanced catalytic activity and very low Pt-utilization. However, precisely controlled synthesis with uniform Pt-monolayers and stability on the AuNPs seeds remain elusive. Herein, we report the controlled deposition of Pt-monolayer onto uniform AuNPs seeds to obtain Au@Pt core–shell NPs and their Pt-coverage dependent electrocatalytic activity for methanol electro-oxidation. The atomic ratio between Au/Pt was effectively tuned by varying the precursor solution ratio in the reaction solution. The morphology and atomic structure of the Au@Pt NPs were analyzed by high-resolution scanning transmission electron microcopy (HR-STEM) and X-ray diffraction (XRD) techniques. The results demonstrated that the Au@Pt core–shell NPs with Pt-shell thickness (atomic ratio 1:2) exhibit higher electrocatalytic activity for methanol electro-oxidation reaction, whereas higher and lower Pt ratios showed less overall catalytic performance. Such higher catalytic performance of Au@Pt NPs (1:2) can be attributed to the weakened CO binding on the Pt/monolayers surface. Our present synthesis strategy and optimization of the catalytic activity of Au@Pt core–shell NPs catalysts provide promising approach to rationally design highly active catalysts with less Pt-usage for high performance electrocatalysts for applications in fuel cells.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Au@Pt Core—Shell Nanoparticles as Efficient Electrocatalyst for Methanol Electro-Oxidation

et al. 2019

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“…It generally gives pure particles. Wang et al prepared CuÀ Co bimetallic nanoparticles by reducing their layered double hydroxide (LDH) precursors in 10% H 2 /Ar atmosphere at 300 °C for 4 h. [27] The LDH precursors were [25] , Copyright (2019), with permission from American Chemical Society. (b) IrÀ M/Al 2 O 3 catalysts for the reduction of nitroarenes.…”

Section: Preparation Techniques For Bimetallic Nanoparticlesmentioning

confidence: 99%

“…Shao and co-workers synthesized alloyed AuÀ Pt/Al 2 O 3 and used it for hydrogenation of nitroarenes. [25] The homogeneous catalysts were prepared via co-reduction [20] Reproduced with permission from ref. [20].…”

Section: Preparation Techniques For Bimetallic Nanoparticlesmentioning

confidence: 99%

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Recent Advances in Hydrogenation Reactions Using Bimetallic Nanocatalysts: A Review

2021

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Hydrogenation reactions have been studied for many decades now and have developed from reactions that appear simple to now being recognized for their many complexities. These reactions are generally catalyzed using monometallic and more recently, with bimetallic nanocatalysts. Hydrogenation plays a vital role in food, chemical, petrochemical, pharmaceuticals, and dye industries to name a few. The hydrogenated products derived from several biomass-based compounds are potential fossil fuels. Such products when employed in daily life, can help conserve natural resources. While hydrogenation of alkynes and alkenes are among the simplest of hydrogenation reactions, the most extensive and elegant manifestation of this reaction is seen in polymerization. Polymers like polythene, polypropylene (plastic) have replaced materials like glass, stainless steel, etc., in making daily use items for the obvious advantages of the former. Purification of alkenes is achieved by partially hydrogenating the respective alkynes present in trace amounts. This serves as an important step in the polymerization process. The presence of nitro group on aromatic rings makes them carcinogenic in nature which harms living organisms. For a safe environment, the elimination or modification of this nitro group becomes imperative. The products of hydrogenation of nitroaromatics and amino aromatics form the basis of pharmaceuticals and dyestuffs. A plethora of bimetallic catalysts have been used to catalyze these hydrogenation reactions. These catalysts are evaluated based on their selectivity and efficiency. This review highlights the recent advancements in the field of hydrogenation of nitro compounds, carbonyl compounds, and unsaturated hydrocarbons catalyzed by bimetallic nanoparticles.

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“…The native ligand 1, 3-thiazolidine-4-ones is used to inhibit polo-like kinase 1 enzyme for the uncontrolled growth of cell division into cancer [13]. Metallic nanocatalysts have played a vital role in the chemical industry; optimizing their catalytic activity enables signi cant cost reduction [14]. Due to the extraordinary features of nanoparticles, such as optical, catalytic, and electric capabilities that may be adjusted depending on the particle's size, size distribution, and morphology [15], nanoparticles have been extensively explored.…”

Section: Introductionmentioning

confidence: 99%

1, 3-Thiazolidine-4-Ones: Copper Nickel Oxide Bimetallic Nanoparticle Catalyzed Synthesis, Anticancer Potential and Molecular Modeling Studies

Sawant

Wadekar

et al. 2021

Preprint

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Background: Cancer is a leading cause of death worldwide. Inhibiting mitosis is the most effective clinical technique for cancer treatment. The most critical field of medicinal chemistry and drug development research is the discovery of innovative anticancer drugs. Thiazolidine is a multifunctional nucleus with anticancer, anti-inflammatory, antioxidant, antibacterial, antifungal, antidiabetic, antihyperlipidemic, and antiarthritic properties. Methods: In this investigation, copper-nickel oxide nanoparticles synthesized by electrochemical synthesis yielded a significant yield. The capping was done with cetyltrimethyl ammonium bromide (CTAB), and the characterization was done with UV, FTIR, XRD, SEM-EDS, and TEM SAED. The biologically significant 2-(2-substituted-4-oxo-thiazolidine-3-yl)-1, 9-dihydro-purin-6-ones (GB-1 to GB-12) have been synthesized using copper-nickel oxide nanoparticles as a catalyst and by applying a microwave-assisted tool. It was characterized by melting point, IR, 1H NMR, 13C NMR and LC-HRMS/MS spectroscopy. Using Sulforhodamine B (SRB) test, all newly synthesized compounds were evaluated in vitro for anti-cancer, anti-inflammatory, antioxidant, and angiogenesis activities. Results: The compounds GB-6 (GI50: 30 μM), GB-8 (GI50: 10 μM) and GB-10 (GI50: 30 μM) exhibited significant cell growth inhibitory activity. The compounds GB-6, GB-8, GB-10 exhibited significant in vitro anti-inflammatory activity in the range of IC50:179.65-194.59 μg/ml as compared with aceclofenac (IC50:191.19μg/ml) and the antioxidant activity by DPPH radical scavenging assay the compounds GB-6 (IC50:11.96 µg/ml), GB-8 (IC50:10.67 µg/ml) and GB-10 (IC50: 9.08 µg/ml) exhibited excellent radical scavenging activities compared to ascorbic acid (IC50:13.04 µg/ml) and by the KMnO4 radical scavenging assay the compounds GB-2 (IC50:15.33 µg/ml), GB-4 (IC50:23.60 µg/ml), GB-8 (IC50:24.93 µg/ml), GB-10 (IC50:24.96 µg/ml) exhibited good radical scavenging activities compared to ascorbic acid (IC50: 26.55 µg/ml). The compounds GB-4, GB-8 and GB-10 at 10 nM test drug concentration and the GB-6 compounds at 100 nM test drug concentration show the maximum capillary growth inhibitory activity compared with thalidomide as a standard drug. Conclusion: Further development of anticancer drugs may be enabled by the discovery of related compounds to the anticancer agent, such as compound (GB-6), compound (GB-8), and compound (GB-10) as polo-like kinase 1 inhibitors.

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Controllable Synthesis of Surface Pt-Rich Bimetallic AuPt Nanocatalysts for Selective Hydrogenation Reactions

Cited by 14 publications

References 50 publications

Synthesis of Au@Pt Core—Shell Nanoparticles as Efficient Electrocatalyst for Methanol Electro-Oxidation

Synthesis of Au@Pt Core—Shell Nanoparticles as Efficient Electrocatalyst for Methanol Electro-Oxidation

Recent Advances in Hydrogenation Reactions Using Bimetallic Nanocatalysts: A Review

1, 3-Thiazolidine-4-Ones: Copper Nickel Oxide Bimetallic Nanoparticle Catalyzed Synthesis, Anticancer Potential and Molecular Modeling Studies

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