Gold nanoparticles as an outstanding catalyst for the hydrogen evolution reaction

Tran, Tien; Nguyen, Minh Tien; Le, Hoang D.; Nguyen, Duc Nghia; Truong, Quang Duc; Tran, Phong D.

doi:10.1039/c8cc00038g

Cited by 70 publications

(59 citation statements)

References 22 publications

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“…Generally, ligands are regarded to be potentially harmful to catalysis because they can block active sites, while a few recent studies hold the opinion that many loosely‐bonded ligands will not completely block the access of the reactants to the catalyst surfaces . For example, PVP‐stabilized gold NPs showed an increased electron density on the Au core, facilitating electron transfer from gold to O 2 and generating super‐oxo or peroxo‐like species, thus promoting the aerobic oxidation of alcohols .…”

Section: Resultsmentioning

confidence: 99%

Promoting the Electrocatalytic Performance of Noble Metal Aerogels by Ligand‐Directed Modulation

Fan

Zerebecki

et al. 2020

Angew Chem Int Ed

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Noble metal aerogels (NMAs) are an emerging class of porous materials. Embracing nano‐sized highly‐active noble metals and porous structures, they display unprecedented performance in diverse electrocatalytic processes. However, various impurities, particularly organic ligands, are often involved in the synthesis and remain in the corresponding products, hindering the investigation of the intrinsic electrocatalytic properties of NMAs. Here, starting from laser‐generated inorganic‐salt‐stabilized metal nanoparticles, various impurity‐free NMAs (Au, Pd, and Au‐Pd aerogels) were fabricated. In this light, we demonstrate not only the intrinsic electrocatalytic properties of NMAs, but also the prominent roles played by ligands in tuning electrocatalysis through modulating the electron density of catalysts. These findings may offer a new dimension to engineer and optimize the electrocatalytic performance for various NMAs and beyond.

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Section: Resultsmentioning

confidence: 99%

Promoting the Electrocatalytic Performance of Noble Metal Aerogels by Ligand‐Directed Modulation

Fan

Zerebecki

et al. 2020

Angew Chem Int Ed

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“…Dr. Phong D. Tran (University of Science and Technology of Hanoi, Vietnam) described the current state-of-the-art of the solar water splitting research. The current progress in the development of noblemetal free catalysts [18][19][20][21][22] , nanostructured light harvesters 23,24 , as well as the catalyst/light harvester assemblage for artificial leaf construction 24 , was also presented. Dr. Tran's group found that the operation of a bias-free leaf displaying 2% solar-to-H 2 conversion yield in pH 7 phosphate buffer solution and under 1 Sun illumination.…”

Section: Introductionmentioning

confidence: 99%

Enthusiastic discussions on solid physic and material science at SPMS2019

2020

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At 11th National Conference of Solid Physics and Material Science (SPMS2019), to which eminent scientists (5 plenary speakers and 16 invited speakers) were invited, most of the discussion focused on solid physic and material science. Around 300 researchers interested in the subject attended the conference and actively participate in the discussion. There were more than 200 reports with five specialized subcommittees: (A) Physics and magnetic materials, (B) Semiconductor and dielectric physics, (C) Materials - semiconductor components - dielectric, (D) Biomedical materials - agriculture, energy - environment, (E) Composite materials - metals - ceramics. Besides, numerous reports submitted to the Journal of Science and Technology (Vietnam Academy of Science and Technology), full-text reports sent to the Organizing Committee, after a critical review process, had been summarized and published in the Collection of conference reports.

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“…1−4 Especially gold-nanoparticle-mediated catalysis has emerged as a promising application. 5−8 However, the use of gold nanoparticles as a suspension is problematic due to challenges faced in handling and recovering the particles. Therefore, immobilization of nanoparticles onto different polymers, 9−11 resins, 12,13 and even gels 14 has been suggested as a potential solution to this problem.…”

Section: Introductionmentioning

confidence: 99%

Gold Nanoparticles on 3D-Printed Filters: From Waste to Catalysts

et al. 2019

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Three-dimensionally printed solid but highly porous polyamide-12 (PA12) plate-like filters were used as selective adsorbents for capturing tetrachloroaurate from acidic solutions and leachates to prepare PA12–Au composite catalysts. The polyamide-adsorbed tetrachloroaurate can be readily reduced to gold nanoparticles by using sodium borohydride, ascorbic acid, hydrogen peroxide, UV light, or by heating. All reduction methods led to polyamide-anchored nanoparticles with an even size distribution and high dispersion. The particle sizes were somewhat dependent on the reduction method, but the average diameters were typically about 20 nm. Particle sizes were determined by using a combination of single-particle inductively coupled plasma mass spectrometry, helium ion microscopy, and powder X-ray diffraction. Dispersion of the particles was analyzed by scanning electron microscopy with energy-dispersive spectroscopy. Due to the high adsorption selectivity of polyamide-12 toward tetrachloroaurate, the three-dimensional-printed filters were first used as selective gold scavengers for the acidic leachate of electronicwaste (WEEE). The supported nanoparticles were then generated directly on the filter via a simple reduction step. These objects were used as catalysts for the reduction of 4-nitrophenol to 4-aminophenol. The described method provides a direct route from waste to catalysts. The selective laser sintering method can be used to customize the flow properties of the catalytically active filter object, which allows the optimization of the porous catalytic object to meet the requirements of catalytic processes.

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Gold nanoparticles as an outstanding catalyst for the hydrogen evolution reaction

Cited by 70 publications

References 22 publications

Promoting the Electrocatalytic Performance of Noble Metal Aerogels by Ligand‐Directed Modulation

Promoting the Electrocatalytic Performance of Noble Metal Aerogels by Ligand‐Directed Modulation

Enthusiastic discussions on solid physic and material science at SPMS2019

Gold Nanoparticles on 3D-Printed Filters: From Waste to Catalysts

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