Advances in the catalysis of Au nanoparticles

Haruta, Masatake; Daté, Masakazu

doi:10.1016/s0926-860x(01)00847-x

Cited by 1,363 publications

(921 citation statements)

References 77 publications

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“…The different reaction activity is related to Au particles size effect; the smaller size gives much higher reaction activity. [37][38][39] We carefully checked the Au clusters in the zeolite by TEM. The diameter of gold nanoclusters is calculated by accounting more than 200 clusters.…”

Section: Resultsmentioning

confidence: 99%

Gold Nanoclusters Confined in a Supercage of Y Zeolite for Aerobic Oxidation of HMF under Mild Conditions

Cai

Zhang

et al. 2013

Chemistry A European J

188

103

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Au nanoclusters with an average size of approximately 1 nm size supported on HY zeolite exhibit a superior catalytic performance for the selective oxidation of 5‐hydroxymethyl‐2‐furfural (HMF) into 2,5‐furandicarboxylic acid (FDCA). It achieved >99 % yield of 2,5‐furandicarboxylic acid in water under mild conditions (60 °C, 0.3 MPa oxygen), which is much higher than that of Au supported on metal oxides/hydroxide (TiO2, CeO2, and Mg(OH)2) and channel‐type zeolites (ZSM‐5 and H‐MOR). Detailed characterizations, such as X‐ray diffraction, transmission electron microscopy, N2‐physisorption, and H2‐temperature‐programmed reduction (TPR), revealed that the Au nanoclusters are well encapsulated in the HY zeolite supercage, which is considered to restrict and avoid further growing of the Au nanoclusters into large particles. The acidic hydroxyl groups of the supercage were proven to be responsible for the formation and stabilization of the gold nanoclusters. Moreover, the interaction between the hydroxyl groups in the supercage and the Au nanoclusters leads to electronic modification of the Au nanoparticles, which is supposed to contribute to the high efficiency in the catalytic oxidation of HMF to FDCA.

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Section: Resultsmentioning

confidence: 99%

Gold Nanoclusters Confined in a Supercage of Y Zeolite for Aerobic Oxidation of HMF under Mild Conditions

Cai

Zhang

et al. 2013

Chemistry A European J

188

103

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“…Firstly, if the molecule and the electrodes have strong chemically bonds, then the electron densities of the molecule-electrode interfaces become high and electrons are less likely to pass through the interfaces; this will result in a small current being produced. 28,29,62 Secondly, single-molecule measurements invariably use chemically active nanostructures as electrodes; for example, considering that gold nanoparticles are often used as catalysts, 63,64 some chemical activity can be assumed even when using gold electrodes. If copper or silver electrodes were used instead, they would readily oxidize under ambient atmospheric conditions.…”

Section: Single-molecule Analysis Methodsmentioning

confidence: 99%

Single-Molecule Analysis Methods Using Nanogap Electrodes and Their Application to DNA Sequencing Technologies

Taniguchi

2017

Bulletin of the Chemical Society of Japan

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Single-molecule analysis methods facilitate the investigation of the properties of single-molecule junctions (SMJs), in which single molecules are connected between a pair of nanoelectrodes that use nanogap electrodes having a spacing of less than several nanometers. Various methods have been developed to investigate numerous useful parameters for SMJs; for example, the number of molecules connected between a pair of nanoelectrodes can be determined, the types and structures of single molecules can be revealed, localized temperatures within SMJs can be evaluated, and the Seebeck coefficient and the bond strength between single molecules and electrodes can be ascertained. Single-molecule analysis methods have also been used to analyze biopolymers in solutions, and this has resulted in single-molecule sequencing technologies being developed that can determine sequences of base molecules in DNA and RNA along with sequences of amino acids in peptides. Singlemolecule analysis methods are expected to develop into digital analysis techniques that can be used to investigate the physical and chemical properties of molecules at single-molecule resolutions.

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“…Many studies have been focused on the reduction by NaBH 4 in the presence of a suitable catalyst to solve this problem. 1,7 Due to their unique electrical, optical, and catalytic performances in comparison to bulk particles, metal and metal oxide nanoparticles such as Ag, 8 Au, 9 Cu, 10 Ni 11 and CuO 12 have been developed as catalysts for the reduction of nitrophenols. A large number of individual studies of catalysts have been reported for the reduction of nitrophenols and their use as photocatalysts for the degradation of organic dyes; however, the study of common catalysts for both reduction and photocatalytic degradation is scarce.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Activity of BiVO₄-graphene Nanocomposites for the Reduction of Nitrophenols and the Photocatalytic Degradation of Organic Dyes

Li¹,

Ko²,

Ko³

2016

Elastomers and Composites

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Advances in the catalysis of Au nanoparticles

Cited by 1,363 publications

References 77 publications

Gold Nanoclusters Confined in a Supercage of Y Zeolite for Aerobic Oxidation of HMF under Mild Conditions

Gold Nanoclusters Confined in a Supercage of Y Zeolite for Aerobic Oxidation of HMF under Mild Conditions

Single-Molecule Analysis Methods Using Nanogap Electrodes and Their Application to DNA Sequencing Technologies

Catalytic Activity of BiVO₄-graphene Nanocomposites for the Reduction of Nitrophenols and the Photocatalytic Degradation of Organic Dyes

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Advances in the catalysis of Au nanoparticles

Cited by 1,363 publications

References 77 publications

Gold Nanoclusters Confined in a Supercage of Y Zeolite for Aerobic Oxidation of HMF under Mild Conditions

Gold Nanoclusters Confined in a Supercage of Y Zeolite for Aerobic Oxidation of HMF under Mild Conditions

Single-Molecule Analysis Methods Using Nanogap Electrodes and Their Application to DNA Sequencing Technologies

Catalytic Activity of BiVO4-graphene Nanocomposites for the Reduction of Nitrophenols and the Photocatalytic Degradation of Organic Dyes

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Product

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Catalytic Activity of BiVO₄-graphene Nanocomposites for the Reduction of Nitrophenols and the Photocatalytic Degradation of Organic Dyes