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Journal articles on the topic 'Pt–Ru Nanoclusters'

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Author: Grafiati

Published: 6 September 2023

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1

Toshima, Naoki. "Core/shell-structured bimetallic nanocluster catalysts for visible-light-induced electron transfer." Pure and Applied Chemistry 72, no. 1-2 (January 1, 2000): 317–25. http://dx.doi.org/10.1351/pac200072010317.

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It has been found that the bimetallic nanoclusters often have so-called core/shell structure if they are prepared by alcohol-reduction of two kinds of noble metal ions in the presence of a water-soluble polymer like poly(N-vinyl-2-pyrolidone)(PVP), and that the core/ shell structured bimetallic nanoclusters have much higher catalytic activity than the corresponding monometallic nanoclusters. Here, several kinds of monometallic and bimetallic nanoclusters are synthesized by the similar method, and the catalyses are measured. Thus, the colloidal dispersions of Au, Pt, Pd, Rh, and Ru monometallic, and Au/Pt, Au/Pd, Au/Rh, and Pt/Ru bimetallic nanoclusters were synthesized and applied as the catalysts for visible-light- induced hydrogen generation. The core/shell structures are analyzed mainly by UV–vis spectra. The rate of electron transfer from the methyl viologen cation radical to the metal nanoclusters is proportional to the hydrogen generation rate at the steady state. All the electrons accepted by the metal nanoclusters are used for the hydrogen generation. Both electron transfer and hydrogen generation rates increase when the bimetallic nanoclusters are used in place of the corresponding monometallic nanoclusters. The most active catalysts were Au/Rh and Pt/Ru bimetallic nanoclusters.

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2

Zhao, Yue, Louzhen Fan, Jingling Ren, and Bo Hong. "Electrodeposition of Pt–Ru and Pt–Ru–Ni nanoclusters on multi-walled carbon nanotubes for direct methanol fuel cell." International Journal of Hydrogen Energy 39, no. 9 (March 2014): 4544–57. http://dx.doi.org/10.1016/j.ijhydene.2013.12.202.

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3

Qi, Hui, Xinglong Guan, Guangyu Lei, Mengyao Zhao, Hongwei He, Kai Li, Guoliang Zhang, et al. "Bimetallic ZIF-Derived Co/N-Codoped Porous Carbon Supported Ruthenium Catalysts for Highly Efficient Hydrogen Evolution Reaction." Nanomaterials 11, no. 5 (May 6, 2021): 1228. http://dx.doi.org/10.3390/nano11051228.

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Exploring the economical, powerful, and durable electrocatalysts for hydrogen evolution reaction (HER) is highly required for practical application. Herein, nanoclusters-decorated ruthenium, cobalt nanoparticles, and nitrogen codoped porous carbon (Ru-pCo@NC) are prepared with bimetallic zeolite imidazole frameworks (ZnCo-ZIF) as the precursor. Thus, the prepared Ru-pCo@NC catalyst with a low Ru loading of 3.13 wt% exhibits impressive HER catalytic behavior in 1 M KOH, with an overpotential of only 30 mV at the current density of 10 mA cm−2, Tafel slope as low as 32.1 mV dec−1, and superior stability for long-time running with a commercial 20 wt% Pt/C. The excellent electrocatalytic properties are primarily by virtue of the highly specific surface area and porosity of carbon support, uniformly dispersed Ru active species, and rapid reaction kinetics of the interaction between Ru and O.

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4

Han, Yong, Albert K. Engstfeld, R. Juergen Behm, and James W. Evans. "Atomistic modeling of the directed-assembly of bimetallic Pt-Ru nanoclusters on Ru(0001)-supported monolayer graphene." Journal of Chemical Physics 138, no. 13 (April 7, 2013): 134703. http://dx.doi.org/10.1063/1.4798348.

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5

Esan, Dominic A., and Michael Trenary. "Interaction of CO with Pt nanoclusters on a graphene-covered Ru(0001) surface." Journal of Chemical Physics 154, no. 11 (March 21, 2021): 114701. http://dx.doi.org/10.1063/5.0042686.

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6

Yang, Jian, Heng Guo, Shulin Chen, Yulan Li, Chao Cai, Peng Gao, Liping Wang, et al. "Anchoring and space-confinement effects to form ultrafine Ru nanoclusters for efficient hydrogen generation." Journal of Materials Chemistry A 6, no. 28 (2018): 13859–66. http://dx.doi.org/10.1039/c8ta03249a.

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7

Ishikawa, Yasuyuki, Robert R. Diaz-Morales, Alejandro Perez, Marius J. Vilkas, and Carlos R. Cabrera. "A density-functional study of the energetics of H2O dissociation on bimetallic Pt/Ru nanoclusters." Chemical Physics Letters 411, no. 4-6 (August 2005): 404–10. http://dx.doi.org/10.1016/j.cplett.2005.05.128.

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8

Chen, Yanjun, Jing Li, Ning Wang, Yanan Zhou, Jian Zheng, and Wei Chu. "Plasma-assisted highly dispersed Pt single atoms on Ru nanoclusters electrocatalyst for pH-universal hydrogen evolution." Chemical Engineering Journal 448 (November 2022): 137611. http://dx.doi.org/10.1016/j.cej.2022.137611.

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9

Jia, Chuanyi, Wenhui Zhong, Mingsen Deng, and Jun Jiang. "CO oxidation on Ru–Pt bimetallic nanoclusters supported on TiO2(101): The effect of charge polarization." Journal of Chemical Physics 148, no. 12 (March 28, 2018): 124701. http://dx.doi.org/10.1063/1.5021712.

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10

Yi, Ding, Wen Zhao, and Feng Ding. "Stable AA-Stacked Pt Nanoclusters Supported on Graphene/Ru(0001) and the Selective Catalysis: A Theoretical Study." ACS Applied Nano Materials 2, no. 5 (April 23, 2019): 2921–25. http://dx.doi.org/10.1021/acsanm.9b00359.

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11

Patra, S., Sthitaprajna Dash, V. Anand, C. S. Nimisha, G. M. Rao, and N. Munichandraiah. "Electrochemical co-deposition of bimetallic Pt–Ru nanoclusters dispersed on poly(3,4-ethylenedioxythiophene) and electrocatalytic behavior for methanol oxidation." Materials Science and Engineering: B 176, no. 10 (June 2011): 785–91. http://dx.doi.org/10.1016/j.mseb.2011.03.012.

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12

Wang, Benlong, Yongpeng Yang, and Shiping Huang. "Theoretical insight into the structural and electronic properties of Ru 13 @Pt 42-n Mo n (n = 0–18) trimetallic nanoclusters." Materials Discovery 7 (March 2017): 21–29. http://dx.doi.org/10.1016/j.md.2017.07.001.

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13

Yang, Miao, Zhongzhu Chen, Yafei Luo, Jin Zhang, Rongxing He, Wei Shen, Dianyong Tang, and Ming Li. "A DFT Insight into Hashmi Phenol Synthesis Catalyzed by M6 @Au32 (M=Ag, Cu, Pd, Pt, Ru, Rh) Core-Shell Nanoclusters." ChemCatChem 8, no. 14 (June 21, 2016): 2367–75. http://dx.doi.org/10.1002/cctc.201600405.

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14

Torabi, Mostafa, Reza Karimi Shervedani, and Akbar Amini. "High performance porous graphene nanoribbons electrodes synthesized via hydrogen plasma and modified by Pt-Ru nanoclusters for charge storage and methanol oxidation." Electrochimica Acta 290 (November 2018): 616–25. http://dx.doi.org/10.1016/j.electacta.2018.09.082.

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15

Carpenter, Joseph P., C. M. Lukehart, Stephen B. Milne, D. O. Henderson, R. Mu, and S. R. Stock. "Formation of Crystalline Nanoclusters of Ag, Cu, Os, Pd, Pt, Re, or Ru in a Silica Xerogel Matrix from Single-Source Molecular Precursors." Chemistry of Materials 9, no. 12 (December 1997): 3164–70. http://dx.doi.org/10.1021/cm970471t.

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16

Malik, Ali Shan, Henrik Bali, Fanni Czirok, Ákos Szamosvölgyi, Gyula Halasi, Anastasiia Efremova, Břetislav Šmíd, András Sápi, Ákos Kukovecz, and Zoltán Kónya. "Turning CO2 to CH4 and CO over CeO2 and MCF-17 supported Pt, Ru and Rh nanoclusters – Influence of nanostructure morphology, supporting materials and operating conditions." Fuel 326 (October 2022): 124994. http://dx.doi.org/10.1016/j.fuel.2022.124994.

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17

Takagi, Nozomi, Kazuya Ishimura, Masafuyu Matsui, Ryoichi Fukuda, Masahiro Ehara, and Shigeyoshi Sakaki. "Core–Shell versus Other Structures in Binary Cu38–nMn Nanoclusters (M = Ru, Rh, Pd, Ag, Os, Ir, Pt, and Au; n = 1, 2, and 6): Theoretical Insight into Determining Factors." Journal of Physical Chemistry C 121, no. 19 (May 9, 2017): 10514–28. http://dx.doi.org/10.1021/acs.jpcc.6b13086.

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18

Zei, M. S. "Epitaxial Growth of Ru and Pt on Pt(111) and Ru(0001), Respectively: A Combined AES and RHEED Study." Journal of Nanotechnology 2010 (2010): 1–12. http://dx.doi.org/10.1155/2010/487193.

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The epitaxial growth of Pt and Ru deposits by spontaneous, as well as by dynamic, electrodeposition onto Ru(0001) and Pt(111), respectively, have been studied by reflection high energy electron diffraction (RHEED) and Auger electron spectroscopy (AES). For the Pt deposit on Ru(0001), at submonolayer range, it preferably grows compressed commensurate bilayer thick islands on Ru(0001). This is the first time that RHEED observation of the onset of Pt twinning occurs in ca. 2-3 layer thick islands on Ru at room temperature, at which the surface strain due to the 2.5% lattice mismatch of Pt and Ru remains intact. For multilayer thick islands (>6 ML) ordered reflection twins (diameter of 3 nm) develop and are embedded in a (111) matrix with an incoherent (11-2) twin plane normal to Ru(0001) and aligned with their [−110] direction parallel to the [11-20] Ru(0001) substrate direction. For the Ru deposit on Pt(111), at 0.2 ML a strained () monoatomic layer is formed due to the 2.5% lattice mismatch of Ru and Pt. Increasing the coverage up to 0.64, the second Ru layer is found to relieve the strain in the first layer, giving rise to dislocations and Ru relaxes to its bulk lattice constant. Multilayers of Ru (>1 ML) result in (0001) nanocluster formation aligned with its [11-20] direction parallel to the [−110] Pt(111) substrate direction.

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19

Yin, Peng, Xiao Luo, Yanfu Ma, Sheng-Qi Chu, Si Chen, Xusheng Zheng, Junling Lu, Xiao-Jun Wu, and Hai-Wei Liang. "Sulfur stabilizing metal nanoclusters on carbon at high temperatures." Nature Communications 12, no. 1 (May 25, 2021). http://dx.doi.org/10.1038/s41467-021-23426-z.

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AbstractSupported metal nanoclusters consisting of several dozen atoms are highly attractive for heterogeneous catalysis with unique catalytic properties. However, the metal nanocluster catalysts face the challenges of thermal sintering and consequent deactivation owing to the loss of metal surface areas particularly in the applications of high-temperature reactions. Here, we report that sulfur—a documented poison reagent for metal catalysts—when doped in a carbon matrix can stabilize ~1 nanometer metal nanoclusters (Pt, Ru, Rh, Os, and Ir) at high temperatures up to 700 °C. We find that the enhanced adhesion strength between metal nanoclusters and the sulfur-doped carbon support, which arises from the interfacial metal-sulfur bonding, greatly retards both metal atom diffusion and nanocluster migration. In catalyzing propane dehydrogenation at 550 °C, the sulfur-doped carbon supported Pt nanocluster catalyst with interfacial electronic effects exhibits higher selectivity to propene as well as more stable durability than sulfur-free carbon supported catalysts.

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20

Zhang, Hefeng, Shengliang Qi, Kaixin Zhu, and Xu Zong. "Ruthenium nanoclusters modified by zinc species towards enhanced electrochemical hydrogen evolution reaction." Frontiers in Chemistry 11 (April 6, 2023). http://dx.doi.org/10.3389/fchem.2023.1189450.

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Ruthenium (Ru) has been considered a promising electrocatalyst for electrochemical hydrogen evolution reaction (HER) while its performance is limited due to the problems of particle aggregation and competitive adsorption of the reaction intermediates. Herein, we reported the synthesis of a zinc (Zn) modified Ru nanocluster electrocatalyst anchored on multiwalled carbon nanotubes (Ru-Zn/MWCNTs). The Ru-Zn catalysts were found to be highly dispersed on the MWCNTs substrate. Moreover, the Ru-Zn/MWCNTs exhibited low overpotentials of 26 and 119 mV for achieving current intensities of 10 and 100 mA cm−2 under alkaline conditions, respectively, surpassing Ru/MWCNTs with the same Ru loading and the commercial 5 wt% Pt/C (47 and 270 mV). Moreover, the Ru-Zn/MWCNTs showed greatly enhanced stability compared to Ru/MWCNTs with no significant decay after 10,000 cycles of CV sweeps and long-term operation for 90 h. The incorporation of Zn species was found to modify the electronic structure of the Ru active species and thus modulate the adsorption energy of the Had and OHad intermediates, which could be the main reason for the enhanced HER performance. This study provides a strategy to develop efficient and stable electrocatalysts towards the clean energy conversion field.

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21

Li, Xiaoting, Cheng Qian, Yonghui Tian, Naizhi Yao, Yixiang Duan, and Zhijun Huang. "Pt-Ru Bimetallic Nanoclusters with Super Peroxidase-like Activity for Ultra-Sensitive Lateral Flow Immunoassay." Chemical Engineering Journal, January 2023, 141324. http://dx.doi.org/10.1016/j.cej.2023.141324.

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22

Guo, Xiaohui, lanxin dai, Jiayu Bai, Hong Li, Yinan Zheng, and hu yao. "Synergistic Effect from Ru Nanoclusters on WC1-x Anchored on N-doped Carbon Nanosheet Boosting High-efficient Alkaline Hydrogen Evolution." Inorganic Chemistry Frontiers, 2022. http://dx.doi.org/10.1039/d2qi01923j.

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Developing novel non-noble electrocatalysts with highly efficiency and low cost for alkaline hydrogen evolution reaction (HER) remains a great challenge. Although tungsten carbides with Pt-like electronic structure have been considered...

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23

Feng, Siquan, Xiangen Song, Yang Liu, Xiangsong Lin, Li Yan, Siyue Liu, Wenrui Dong, Xueming Yang, Zheng Jiang, and Yunjie Ding. "In situ formation of mononuclear complexes by reaction-induced atomic dispersion of supported noble metal nanoparticles." Nature Communications 10, no. 1 (November 21, 2019). http://dx.doi.org/10.1038/s41467-019-12965-1.

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AbstractSupported noble metal nanoclusters and single-metal-site catalysts are inclined to aggregate into particles, driven by the high surface-to-volume ratio. Herein, we report a general method to atomically disperse noble metal nanoparticles. The activated carbon supported nanoparticles of Ru, Rh, Pd, Ag, Ir and Pt metals with loading up to 5 wt. % are completely dispersed by reacting with CH3I and CO mixture. The dispersive process of the Rh nanoparticle is investigated in depth as an example. The in-situ detected I• radicals and CO molecules are identified to promote the breakage of Rh-Rh bonds and the formation of mononuclear complexes. The isolated Rh mononuclear complexes are immobilized by the oxygen-containing functional groups based on the effective atomic number rule. The method also provides a general strategy for the development of single-metal-site catalysts for other applications.

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24

"Carbide Derived Carbon as a Support for Pt and Pt-Ru Nanocluster Activated Catalysts." ECS Meeting Abstracts, 2013. http://dx.doi.org/10.1149/ma2013-01/39/1373.

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