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Gao S, Li P, Shi Y, He Y, Lei L, Hao S, Zhang X. Ternary PtCoMo Alloy with Dual Surface Co and Mo Defects for Synergistically Enhanced Acidic Oxygen Reduction. ChemElectroChem 2023. [DOI: 10.1002/celc.202201087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Shaojie Gao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological Engineering Zhejiang University Hangzhou Zhejiang Province 310027 P.R. China
| | - Ping Li
- Institute of Zhejiang University-QuZhou 78 Jiuhua Boulevard North QuZhou Zhejiang Province 324003 P.R. China
| | - Yao Shi
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological Engineering Zhejiang University Hangzhou Zhejiang Province 310027 P.R. China
| | - Yi He
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological Engineering Zhejiang University Hangzhou Zhejiang Province 310027 P.R. China
| | - Lecheng Lei
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological Engineering Zhejiang University Hangzhou Zhejiang Province 310027 P.R. China
- Institute of Zhejiang University-QuZhou 78 Jiuhua Boulevard North QuZhou Zhejiang Province 324003 P.R. China
| | - Shaoyun Hao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological Engineering Zhejiang University Hangzhou Zhejiang Province 310027 P.R. China
| | - Xingwang Zhang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological Engineering Zhejiang University Hangzhou Zhejiang Province 310027 P.R. China
- Institute of Zhejiang University-QuZhou 78 Jiuhua Boulevard North QuZhou Zhejiang Province 324003 P.R. China
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He Z, Wang H, Yu T, Zuo L, Yan S, Bian T, Su S. Trimetallic Au@RhCu Core‐Shell Nanodendrites as Efficient Bifunctional Electrocatalysts toward Hydrogen and Oxygen Evolution Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202103472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zeyang He
- School of Energy and Power Jiangsu University of Science and Technology Zhenjiang 212003 People's Republic of China
| | - Haoquan Wang
- School of Energy and Power Jiangsu University of Science and Technology Zhenjiang 212003 People's Republic of China
| | - Tao Yu
- School of Energy and Power Jiangsu University of Science and Technology Zhenjiang 212003 People's Republic of China
| | - Linzhi Zuo
- School of Energy and Power Jiangsu University of Science and Technology Zhenjiang 212003 People's Republic of China
| | - Shitan Yan
- CEPREI (Nanjing) Institute of Industry and Technology Nanjing 211800 People's Republic of China
| | - Ting Bian
- School of Energy and Power Jiangsu University of Science and Technology Zhenjiang 212003 People's Republic of China
| | - Shichuan Su
- School of Energy and Power Jiangsu University of Science and Technology Zhenjiang 212003 People's Republic of China
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New Ultrasensitive Sandwich-Type Immunoassay of Dendritic Tri-Fan Blade-like PdAuCu Nanoparticles/Amine-Functionalized Graphene Oxide for Label-Free Detection of Carcinoembryonic Antigen. MICROMACHINES 2021; 12:mi12101256. [PMID: 34683307 PMCID: PMC8537010 DOI: 10.3390/mi12101256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/12/2021] [Accepted: 10/14/2021] [Indexed: 01/02/2023]
Abstract
The early detection of tumor markers has an effective role in the treatment of cancer. Here, a new sandwich-type electrochemical immunosensor for early label-free detection of the cancer biomarker carcinoembryonic antigen (CEA) was developed. Dendritic tri-fan blade-like PdAuCu nanoparticles (PdAuCu NPs)/amine functionalized graphene oxide (NH2-GO) were the label of secondary antibodies (Ab2), and Au nanoparticle-decorated polydopamines (Au/PDA) were immobilized on a screen-printed carbon electrode (SPCE) as the substrate materials. Dendritic tri-fan blade-like PdAuCu NPs/NH2-GO was synthesized according to a simple hydrothermal procedure and used to immobilize antibodies (Ab2) with large surfaces areas, increased catalytic properties and good adsorption to amplify the current signals. Subsequently, Ab2/PdAuCu NPs/NH2-GO catalyzed the reduction of H2O2 in the sandwich-type immunoreactions. Under optimal conditions, the immunosensor exhibited a satisfactory response to CEA with a limit detection of 0.07 pg mL−1 and a linear detection range from 0.1 pg mL−1 to 200 ng mL−1. The proposed immunosensor could be suitable enough for a real sample analysis of CEA, and has clinical value in the early diagnosis of cancer.
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Self-Supported Defect-Rich Au-Based Nanostructures as Robust Bifunctional Catalysts for the Methanol Oxidation Reaction and Oxygen Reduction Reaction in an Alkaline Medium. NANOMATERIALS 2021; 11:nano11092193. [PMID: 34578509 PMCID: PMC8467196 DOI: 10.3390/nano11092193] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/17/2021] [Accepted: 08/23/2021] [Indexed: 11/16/2022]
Abstract
Recently, alkaline direct methanol fuel cells have made great progress with the development of alkaline electrocatalysis, and a wide variety of catalysts have been explored for methanol oxidation reaction (MOR)and oxygen reduction reaction (ORR). However, the slow kinetics of the MOR and ORR remain a great challenge. In this paper, self-supported defect-rich AuCu was obtained by a convenient one-pot strategy. Self-supported AuCu presented a branched, porous nanostructure. The nanobranch consisted of several 13 nm skeletons, which connected in the kink of the structure. Different growth directions co-existed at the kink, and the twin boundaries and dislocations as defects were observed. When the Au-based nanostructure functioned as an electrocatalyst, it showed robust MOR and ORR performance. For the MOR, the forward peak current was 2.68 times greater than that of Au/C; for the ORR, the activity was close to that of Pt/C and significantly better than that of Au/C. In addition, it possessed superior electrochemical stability for MOR and ORR. Finally, an in-depth exploration of the impact of surface defects and electrochemical Cu removal on MOR and ORR activity was carried out to explain the MOR and ORR’s catalytic performance.
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Liang Y, Ma T, Xiong Y, Qiu L, Yu H, Liang F. Highly efficient blackberry-like trimetallic PdAuCu nanoparticles with optimized Pd content for ethanol electrooxidation. NANOSCALE 2021; 13:9960-9970. [PMID: 34018506 DOI: 10.1039/d1nr00841b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The rational design of highly efficient catalysts for ethanol electrooxidation is extremely challenging for developing direct ethanol fuel cells (DEFCs). Herein, a facile one-pot method has been developed to prepare blackberry-like PdAuCu nanoparticles (NPs) with tunable composition and surface structures. Among PdAuCu NPs with different Pd contents (1.6-22 mass%), PdAuCu NPs-0.5 (contained Pd at 2.5 mass%) delivered one of the highest catalytic activities of Pd-based catalysts towards ethanol electrooxidation, exhibiting a mass activity of 23.0 A mgPd-1. Kinetic analysis, electrochemical impedance spectroscopy and CO stripping test results suggested that the excellent electrocatalytic activity may originate from the optimized balance between Pd content and surface structure of PdAuCu NPs-0.5. The optimization of the balance between composition and surface structure would contribute to the further design of multimetallic nanoparticles for fuel cells and other applications.
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Affiliation(s)
- Yinyin Liang
- The State Key Laboratory of Refractories and Metallurgy, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, P. R. China.
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Zhao S, Zhao Z, Yao K, Liu H. Density functional study of Pd Cu Au (a + b + c = 7) clusters: Geometry, electronic and H2 physisorption properties. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.112783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Ercolano G, Farina F, Stievano L, Jones DJ, Rozière J, Cavaliere S. Preparation of Ni@Pt core@shell conformal nanofibre oxygen reduction electrocatalysts via microwave-assisted galvanic displacement. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01514k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ni@Pt core@shell nanofibres with controlled platinum shell thickness and Pt/Ni ratio are synthesised by an extremely fast and reproducible route, allowing their direct use as electrocatalysts.
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Affiliation(s)
- Giorgio Ercolano
- Institut Charles Gerhardt Montpellier
- UMR CNRS 5253
- Agrégats Interfaces et Matériaux pour l'Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Filippo Farina
- Institut Charles Gerhardt Montpellier
- UMR CNRS 5253
- Agrégats Interfaces et Matériaux pour l'Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Lorenzo Stievano
- Institut Charles Gerhardt Montpellier
- UMR CNRS 5253
- Agrégats Interfaces et Matériaux pour l'Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Deborah J. Jones
- Institut Charles Gerhardt Montpellier
- UMR CNRS 5253
- Agrégats Interfaces et Matériaux pour l'Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Jacques Rozière
- Institut Charles Gerhardt Montpellier
- UMR CNRS 5253
- Agrégats Interfaces et Matériaux pour l'Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Sara Cavaliere
- Institut Charles Gerhardt Montpellier
- UMR CNRS 5253
- Agrégats Interfaces et Matériaux pour l'Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
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He J, Huang A, Johnson NJJ, Dettelbach KE, Weekes DM, Cao Y, Berlinguette CP. Stabilizing Copper for CO2 Reduction in Low-Grade Electrolyte. Inorg Chem 2018; 57:14624-14631. [DOI: 10.1021/acs.inorgchem.8b02311] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Jingfu He
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Aoxue Huang
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Noah J. J. Johnson
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Kevan E. Dettelbach
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - David M. Weekes
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Yang Cao
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
| | - Curtis P. Berlinguette
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
- Department of Chemical & Biological Engineering, The University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z3, Canada
- Stewart Blusson Quantum Matter Institute, The University of British Columbia, 2355 East Mall, Vancouver, British Columbia V6T 1Z4, Canada
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Gong H, Lu S, Strasser P, Yang R. Highly efficient AuNi-Cu2O electrocatalysts for the oxygen reduction and evolution reactions: Important role of interaction between Au and Ni engineered by leaching of Cu2O. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.07.083] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Alpuche-Aviles MA, Farina F, Ercolano G, Subedi P, Cavaliere S, Jones DJ, Rozière J. Electrodeposition of Two-Dimensional Pt Nanostructures on Highly Oriented Pyrolytic Graphite (HOPG): The Effect of Evolved Hydrogen and Chloride Ions. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E668. [PMID: 30154313 PMCID: PMC6164704 DOI: 10.3390/nano8090668] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 08/19/2018] [Accepted: 08/23/2018] [Indexed: 11/23/2022]
Abstract
We discuss the electrodeposition of two-dimensional (2D) Pt-nanostructures on Highly Oriented Pyrolytic Graphite (HOPG) achieved under constant applied potential versus a Pt counter electrode (Eappl = ca. -2.2 V vs. NHE, normal hydrogen electrode). The deposition conditions are discussed in terms of the electrochemical behavior of the electrodeposition precursor (H₂PtCl₆). We performed cyclic voltammetry (CV) of the electrochemical Pt deposit on HOPG and on Pt substrates to study the relevant phenomena that affect the morphology of Pt deposition. Under conditions where the Pt deposition occurs and H₂ evolution is occurring at the diffusion-limited rate (-0.3 V vs. NHE), Pt forms larger structures on the surface of HOPG, and the electrodeposition of Pt is not limited by diffusion. This indicates the need for large overpotentials to direct the 2D growth of Pt. Investigation of the possible effect of Cl- showed that Cl- deposits on the surface of Pt at low overpotentials, but strips from the surface at potentials more positive than the electrodeposition potential. The CV of Pt on HOPG is a strong function of the nature of the surface. We propose that during immersion of HOPG in the electrodeposition solution (3 mM H₂PtCl₆, 0.5 M NaCl, pH 2.3) Pt islands are formed spontaneously, and these islands drive the growth of the 2D nanostructures. The reducing agents for the spontaneous deposition of Pt from solution are proposed as step edges that get oxidized in the solution. We discuss the possible oxidation reactions for the edge sites.
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Affiliation(s)
| | - Filippo Farina
- Institute Charles Gerhardt Montpellier, Laboratory of Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier, France.
| | - Giorgio Ercolano
- Institute Charles Gerhardt Montpellier, Laboratory of Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier, France.
| | - Pradeep Subedi
- Department of Chemistry, University of Nevada, Reno, NV 89557, USA.
| | - Sara Cavaliere
- Institute Charles Gerhardt Montpellier, Laboratory of Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier, France.
| | - Deborah J Jones
- Institute Charles Gerhardt Montpellier, Laboratory of Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier, France.
| | - Jacques Rozière
- Institute Charles Gerhardt Montpellier, Laboratory of Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier, France.
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Alpuche-Aviles MA, Farina F, Ercolano G, Subedi P, Cavaliere S, Jones DJ, Rozière J. Electrodeposition of Two-Dimensional Pt Nanostructures on Highly Oriented Pyrolytic Graphite (HOPG): The Effect of Evolved Hydrogen and Chloride Ions. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:nano8090668. [PMID: 30154313 DOI: 10.20944/preprints201807.0392.v1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 08/19/2018] [Accepted: 08/23/2018] [Indexed: 05/24/2023]
Abstract
We discuss the electrodeposition of two-dimensional (2D) Pt-nanostructures on Highly Oriented Pyrolytic Graphite (HOPG) achieved under constant applied potential versus a Pt counter electrode (Eappl = ca. -2.2 V vs. NHE, normal hydrogen electrode). The deposition conditions are discussed in terms of the electrochemical behavior of the electrodeposition precursor (H₂PtCl₆). We performed cyclic voltammetry (CV) of the electrochemical Pt deposit on HOPG and on Pt substrates to study the relevant phenomena that affect the morphology of Pt deposition. Under conditions where the Pt deposition occurs and H₂ evolution is occurring at the diffusion-limited rate (-0.3 V vs. NHE), Pt forms larger structures on the surface of HOPG, and the electrodeposition of Pt is not limited by diffusion. This indicates the need for large overpotentials to direct the 2D growth of Pt. Investigation of the possible effect of Cl- showed that Cl- deposits on the surface of Pt at low overpotentials, but strips from the surface at potentials more positive than the electrodeposition potential. The CV of Pt on HOPG is a strong function of the nature of the surface. We propose that during immersion of HOPG in the electrodeposition solution (3 mM H₂PtCl₆, 0.5 M NaCl, pH 2.3) Pt islands are formed spontaneously, and these islands drive the growth of the 2D nanostructures. The reducing agents for the spontaneous deposition of Pt from solution are proposed as step edges that get oxidized in the solution. We discuss the possible oxidation reactions for the edge sites.
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Affiliation(s)
| | - Filippo Farina
- Institute Charles Gerhardt Montpellier, Laboratory of Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier, France.
| | - Giorgio Ercolano
- Institute Charles Gerhardt Montpellier, Laboratory of Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier, France.
| | - Pradeep Subedi
- Department of Chemistry, University of Nevada, Reno, NV 89557, USA.
| | - Sara Cavaliere
- Institute Charles Gerhardt Montpellier, Laboratory of Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier, France.
| | - Deborah J Jones
- Institute Charles Gerhardt Montpellier, Laboratory of Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier, France.
| | - Jacques Rozière
- Institute Charles Gerhardt Montpellier, Laboratory of Aggregates Interfaces and Materials for Energy, University of Montpellier, 34095 Montpellier, France.
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Gong H, Zhang W, Li F, Yang R. Enhanced Electrocatalytic Performance of Self-supported AuCuCo for Oxygen Reduction and Evolution Reactions. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.08.194] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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