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Embedding Pt-Ni octahedral nanoparticles in the 3D nitrogen-doped porous graphene for enhanced oxygen reduction activity. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138956] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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2
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Sun X, Xue J, Ren Y, Li X, Zhou L, Li B, Zhao Z. Catalytic Property and Stability of Subnanometer Pt Cluster on Carbon Nanotube in Direct Propane Dehydrogenation. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000415] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiaoying Sun
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University Shenyang Liaoning 110034 China
| | - Jiahui Xue
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University Shenyang Liaoning 110034 China
| | - Yu Ren
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing 102249 China
| | - Xinyu Li
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University Shenyang Liaoning 110034 China
| | - Lijing Zhou
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University Shenyang Liaoning 110034 China
| | - Bo Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang Liaoning 110016 China
| | - Zhen Zhao
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University Shenyang Liaoning 110034 China
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing 102249 China
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3
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Kanninen P, Eriksson B, Davodi F, Buan MEM, Sorsa O, Kallio T, Lindström RW. Carbon corrosion properties and performance of multi-walled carbon nanotube support with and without nitrogen-functionalization in fuel cell electrodes. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135384] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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4
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Ghouri ZK, Elsaid K, Abdala A, Al-Meer S, Barakat NAM. Surfactant/organic solvent free single-step engineering of hybrid graphene-Pt/TiO 2 nanostructure: Efficient photocatalytic system for the treatment of wastewater coming from textile industries. Sci Rep 2018; 8:14656. [PMID: 30279571 PMCID: PMC6168455 DOI: 10.1038/s41598-018-33108-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 09/21/2018] [Indexed: 01/19/2023] Open
Abstract
In this study, hybrid graphene-Pt/TiO2 nanostructure were synthesized by single-step, inexpensive and surfactant/organic solvent free route; hydrothermal technique. The physicochemical properties of hybrid graphene-Pt/TiO2 nanostructure were carefully analyzed by multiple techniques, including X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscope (FESEM) and transmission electron microscope (TEM). The synthesized hybrid nanostructures were utilized as photocatalyst for the degradation of methylene blue (MB) dye under natural environment at average ambient temperature and mean daily global solar radiation, of about 22–25 °C and 374.9 mWh/cm2, respectively. The activity performance indicated considerable degradation of methylene blue (MB) dye and was in the following order Gr (13%), TiO2 (60%) and hybrid graphene-Pt/TiO2 nanostructure (90%) over 21 min under the natural light illumination. The physiochemical characterization suggests that, the tightly attached metalized TiO2 nanoparticles (Pt-TiO2) on the high surface area graphene sheets improved utilization of visible light and increased separation and transfer of photo-excited electron (ē) hole (h+) pairs. Notably, the hybrid graphene-Pt/TiO2 nanostructure exhibited an excellent cyclic stability for methylene blue (MB) dye removal. Finally, the kinetic behavior indicated that the photocatalytic degradation reaction of the dye obeyed the pseudo-first order (Langmuir-Hinshelwood) kinetics model.
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Affiliation(s)
- Zafar Khan Ghouri
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874, Doha, Qatar.
| | - Khaled Elsaid
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874, Doha, Qatar
| | - Ahmed Abdala
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. 23874, Doha, Qatar.
| | - Saeed Al-Meer
- Central Laboratories Unit, Qatar University, P. O. Box: 2713, Doha, Qatar
| | - Nasser A M Barakat
- Department of Organic Materials & Fiber Engineering, Chonbuk National University, Jeonju, 54896, Republic of Korea. .,Department of Chemical Engineering, Minia University, El-Minia, Egypt.
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Smirnov MY, Vovk EI, Nartova AV, Kalinkin AV, Bukhtiyarov VI. An XPS and STM Study of Oxidized Platinum Particles Formed by the Interaction between Pt/HOPG with NO2. KINETICS AND CATALYSIS 2018. [DOI: 10.1134/s0023158418050129] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Tuo YX, Shi LJ, Cheng HY, Zhu YA, Yang ML, Xu J, Han YF, Li P, Yuan WK. Insight into the support effect on the particle size effect of Pt/C catalysts in dehydrogenation. J Catal 2018. [DOI: 10.1016/j.jcat.2018.02.001] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Affiliation(s)
- Edward Furimsky
- IMAF Group, 184 Marlborough
Avenue, Ottawa, Ontario, Canada K1N 8G4
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8
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Highly active platinum nanoparticles supported by nitrogen/sulfur functionalized graphene composite for ethanol electro-oxidation. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.05.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Kanninen P, Borghei M, Hakanpää J, Kauppinen EI, Ruiz V, Kallio T. Temperature dependent performance and catalyst layer properties of PtRu supported on modified few-walled carbon nanotubes for the alkaline direct ethanol fuel cell. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2016.10.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Shen Y, Gong B, Xiao K, Wang L. In Situ Assembly of Ultrathin PtRh Nanowires to Graphene Nanosheets as Highly Efficient Electrocatalysts for the Oxidation of Ethanol. ACS APPLIED MATERIALS & INTERFACES 2017; 9:3535-3543. [PMID: 28060480 DOI: 10.1021/acsami.6b09573] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
One-dimensional (1D) anisotropic platinum-based nanowires are promising electrocatalysts in polymer electrolyte membrane fuel cells owing to the inherent structural merits. Herein, we report an in situ growth of ultrathin PtRh nanowires (diameters of 2-3 nm) on graphene nanosheets via the oriented attachment pathway. Mechanistic studies reveal that graphene nanosheets play a critical role in the nucleation and growth of PtRh nanowires. The resulting hybrid of PtRh nanowire decorated graphene nanosheets shows outstanding activity and durability toward ethanol electro-oxidation. It exhibits a specific current density of 2.8 mA cm-2 and a mass-normalized current density of 1 A mg-1 metal, which are 5.4 and 3.1 times those of the state-of-the-art Pt/C catalyst, respectively. After 2000 cyclic tests, it maintains 86% of the initial electrochemically active surface area, which is larger than that of 63% obtained from the Pt/C catalyst. The superior performance is attributed to the combination of the advantageous 1D morphological motif with the synergistic effects of PtRh alloys and graphene nanosheet support.
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Affiliation(s)
- Yi Shen
- School of Food Science and Engineering, South China University of Technology , Guangzhou 510640, People's Republic of China
| | - Bin Gong
- School of Food Science and Engineering, South China University of Technology , Guangzhou 510640, People's Republic of China
| | - Kaijun Xiao
- School of Food Science and Engineering, South China University of Technology , Guangzhou 510640, People's Republic of China
| | - Lei Wang
- Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University , Shenzhen 518060, People's Republic of China
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Xiong H, Jewell LL, Coville NJ. Shaped Carbons As Supports for the Catalytic Conversion of Syngas to Clean Fuels. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00090] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haifeng Xiong
- Department of Chemical & Biological Engineering and Center for Microengineered Materials, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Linda L. Jewell
- DST-NRF
Center of Excellence in Catalysis and Department of Chemical Engineering, University of South Africa, P/Bag X6, Florida, Johannesburg 1710, South Africa
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12
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Centi G, Perathoner S, Su DS. Nanocarbons: Opening New Possibilities for Nano-engineered Novel Catalysts and Catalytic Electrodes. CATALYSIS SURVEYS FROM ASIA 2014. [DOI: 10.1007/s10563-014-9172-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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13
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Shen Y, Zhang Z, Long R, Xiao K, Xi J. Synthesis of ultrafine Pt nanoparticles stabilized by pristine graphene nanosheets for electro-oxidation of methanol. ACS APPLIED MATERIALS & INTERFACES 2014; 6:15162-15170. [PMID: 25144932 DOI: 10.1021/am503309h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this study, the pristine graphene nanosheets (GNS) derived from chemical vapor deposition process were employed as catalyst support. In spite of the extremely hydrophobic GNS surface, ultrafine Pt nanoparticles (NPs) were successfully assembled on the GNS through a surfactant-free solution process. The evolution of Pt NPs in the GNS support was studied using transmission electron microscopy. It was found that the high-energy surface sites in the GNS, such as edges and defects, played a critical role on anchoring and stabilizing Pt nuclei, leading to the formation of Pt NPs on the GNS support. The concentration of the Pt precursor, i.e., H2PtCl6 solution had significant effects on the morphology of Pt/GNS hybrids. The resulting Pt/GNS hybrids were examined as catalysts for methanol electro-oxidation. It was indicated that the electrochemical active surface area and catalytic activity of the Pt/GNS hybrids were highly dependent on Pt loadings. The superior activity of the catalysts with low Pt loadings was attributed to the presence of Pt subnanoclusters as well as the strong chemical interaction of Pt NPs with the GNS support.
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Affiliation(s)
- Yi Shen
- College of Light Industry and Food Sciences, South China University of Technology , Guangzhou 510640, China
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Shen Y, Zhang Z, Xiao K, Xi J. Electrocatalytic activity of Pt subnano/nanoclusters stabilized by pristine graphene nanosheets. Phys Chem Chem Phys 2014; 16:21609-14. [DOI: 10.1039/c4cp03048f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Outstanding electrocatalytic activity of Pt subnano/nanoclusters stabilized by pristine graphene nanosheets.
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Affiliation(s)
- Yi Shen
- College of Light Industry and Food Sciences
- South China University of Technology
- Guangzhou, China
| | - Zhihui Zhang
- College of Light Industry and Food Sciences
- South China University of Technology
- Guangzhou, China
| | - Kaijun Xiao
- College of Light Industry and Food Sciences
- South China University of Technology
- Guangzhou, China
| | - Jingyu Xi
- Lab of Advanced Power Sources
- Graduate School at Shenzhen
- Tsinghua University
- Shenzhen, China
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