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Deng X, Lao M, Li Z, Yin S, Liu F, Xie Z, Liang Y. Preparation and Performance of a Cu@PtCu/CNF Oxygen Reduction Catalyst Membrane by Electrospinning. ACS OMEGA 2022; 7:31502-31508. [PMID: 36092599 PMCID: PMC9453935 DOI: 10.1021/acsomega.2c04187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
A flexible carbon nanofiber film with high conductivity was prepared by electrospinning, and then Cu was uniformly deposited on the fiber film by pulse electrodeposition to prepare Cu nanocrystal/carbon nanofiber film. Cu@PtCu/carbon nanofiber (Cu@PtCu/CNF) catalytic films were synthesized by in-situ substitution reduction. The Cu@PtCu/CNF catalytic film solves the problem of uneven activity of the catalytic layer and can be directly used as the catalytic layer. The morphology and structure were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Electrochemical test results show that the Cu@PtCu/CNF catalytic films obtained at the chloroplatinic acid concentration of 0.5 mg·mL-1 (N2) exhibited 2.5 times specific activity when compared with commercial Pt/C catalysts. After 5000 cycles of stability test, the electrochemical surface areas (ECSAs) were still maintained at 80%, and the half-wave potential decreased by 11 mV, which was better than those of commercial Pt/C catalysts.
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Affiliation(s)
- Xiaoting Deng
- College
of Food and Chemical Engineering, Shaoyang
University, Shaoyang 422000, China
| | - Min Lao
- College
of Food and Chemical Engineering, Shaoyang
University, Shaoyang 422000, China
| | - Zhenqin Li
- National
Key Laboratory of Science and Technology for National Defence on High-strength
Structural Materials, Central South University, Changsha 410083, China
| | - Shaofeng Yin
- College
of Food and Chemical Engineering, Shaoyang
University, Shaoyang 422000, China
| | - Feng Liu
- State
Key Laboratory of Advanced Technologies for Comprehensive Utilization
of Platinum Metals, Kunming Institute of
Precious Metals, Kunming 650106, China
| | - Zhiyong Xie
- National
Key Laboratory of Science and Technology for National Defence on High-strength
Structural Materials, Central South University, Changsha 410083, China
| | - Yili Liang
- National
Key Laboratory of Science and Technology for National Defence on High-strength
Structural Materials, Central South University, Changsha 410083, China
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2
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F, N neutralizing effect induced Co-P-O cleaving endows CoP nanosheets with superior HER and OER performances. J Colloid Interface Sci 2022; 619:298-306. [DOI: 10.1016/j.jcis.2022.03.123] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/22/2022] [Accepted: 03/27/2022] [Indexed: 12/26/2022]
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3
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Guo M, Ma P, Wang J, Xu H, Zheng K, Cheng D, Liu Y, Guo G, Dai H, Duan E, Deng J. Synergy in Au-CuO Janus Structure for Catalytic Isopropanol Oxidative Dehydrogenation to Acetone. Angew Chem Int Ed Engl 2022; 61:e202203827. [PMID: 35419926 DOI: 10.1002/anie.202203827] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Indexed: 11/09/2022]
Abstract
The controlled oxidation of alcohols to the corresponding ketones or aldehydes via selective cleavage of the β-C-H bond of alcohols under mild conditions still remains a significant challenge. Although the metal/oxide interface is highly active and selective, the interfacial sites fall far behind the demand, due to the large and thick support. Herein, we successfully develop a unique Au-CuO Janus structure (average particle size=3.8 nm) with an ultrathin CuO layer (0.5 nm thickness) via a bimetal in situ activation and separation strategy. The resulting Au-CuO interfacial sites prominently enhance isopropanol adsorption and decrease the energy barrier of β-C-H bond scission from 1.44 to 0.01 eV due to the strong affinity between the O atom of CuO and the H atom of isopropanol, compared with Au sites alone, thereby achieving ultrahigh acetone selectivity (99.3 %) over 1.1 wt % AuCu0.75 /Al2 O3 at 100 °C and atmospheric pressure with 97.5 % isopropanol conversion. Furthermore, Au-CuO Janus structures supported on SiO2 , TiO2 or CeO2 exhibit remarkable catalytic performance, and great promotion in activity and acetone selectivity is achieved as well for other reducible oxides derived from Fe, Co, Ni and Mn. This study should help to develop strategies for maximized interfacial site construction and structure optimization for efficient β-C-H bond activation.
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Affiliation(s)
- Meng Guo
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Key Laboratory for Green Catalysis and Separation, Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Peijie Ma
- Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Jiayi Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Haoxiang Xu
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Kun Zheng
- Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Daojian Cheng
- State Key Laboratory of Organic-Inorganic Composites, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Yuxi Liu
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Key Laboratory for Green Catalysis and Separation, Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Guangsheng Guo
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Key Laboratory for Green Catalysis and Separation, Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Hongxing Dai
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Key Laboratory for Green Catalysis and Separation, Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Erhong Duan
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, P. R. China
| | - Jiguang Deng
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Key Laboratory for Green Catalysis and Separation, Center of Excellence for Environmental Safety and Biological Effects, Beijing University of Technology, Beijing, 100124, P. R. China
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4
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Sanad MF, Franklin HM, Ali BA, Puente Santiago AR, Nair AN, Chava VSN, Fernandez-Delgado O, Allam NK, Stevenson S, Sreenivasan ST, Echegoyen L. Cylindrical C 96 Fullertubes: A Highly Active Metal-Free O 2 -Reduction Electrocatalyst. Angew Chem Int Ed Engl 2022; 61:e202116727. [PMID: 35254698 DOI: 10.1002/anie.202116727] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Indexed: 12/22/2022]
Abstract
A new isolation protocol was recently reported for highly purified metallic Fullertubes D5h -C90 , D3d -C96 , and D5d -C100, which exhibit unique electronic features. Here, we report the oxygen reduction electrocatalytic behavior of C60 , C70 (spheroidal fullerenes), and C90 , C96 , and C100 (tubular fullerenes) using a combination of experimental and theoretical approaches. C96 (a metal-free catalyst) displayed remarkable oxygen reduction reaction (ORR) activity, with an onset potential of 0.85 V and a halfway potential of 0.75 V, which are close to the state-of-the-art Pt/C benchmark catalyst values. We achieved an excellent power density of 0.75 W cm-2 using C96 as a modified cathode in a proton-exchange membrane fuel cell, comparable to other recently reported efficient metal-free catalysts. Combined band structure (experimentally calculated) and free-energy (DFT) investigations show that both favorable energy-level alignment active catalytic sites on the carbon cage are responsible for the superior activity of C96 .
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Affiliation(s)
- Mohamed Fathi Sanad
- Department of Chemistry and Biochemistry and Environmental Sciences and Engineering, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, USA
| | - Hannah M Franklin
- Department of Chemistry, Purdue University, Fort Wayne, IN 46805, USA
| | - Basant A Ali
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo, New Cairo, 11835, Egypt
| | - Alain R Puente Santiago
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, USA
| | - Aruna N Nair
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, USA
| | - Venkata S N Chava
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, USA
| | - Olivia Fernandez-Delgado
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, USA
| | - Nageh K Allam
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo, New Cairo, 11835, Egypt
| | - Steven Stevenson
- Department of Chemistry, Purdue University, Fort Wayne, IN 46805, USA
| | - Sreeprasad T Sreenivasan
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, USA
| | - Luis Echegoyen
- Department of Chemistry and Biochemistry, The University of Texas at El Paso, 500 W. University Avenue, El Paso, TX 79968, USA
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5
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Synergy in Au‐CuO Janus Structure for Catalytic Isopropanol Oxidative Dehydrogenation to Acetone. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Sanad MF, Franklin HM, Ali BA, Puente Santiago AR, Nair AN, Chava VSN, Fernandez‐Delgado O, Allam NK, Stevenson S, Sreenivasan ST, Echegoyen L. Cylindrical C
96
Fullertubes: A Highly Active Metal‐Free O
2
‐Reduction Electrocatalyst. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116727] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Mohamed Fathi Sanad
- Department of Chemistry and Biochemistry and Environmental Sciences and Engineering The University of Texas at El Paso 500 W. University Avenue El Paso TX 79968 USA
| | | | - Basant A. Ali
- Energy Materials Laboratory School of Sciences and Engineering The American University in Cairo New Cairo 11835 Egypt
| | - Alain R. Puente Santiago
- Department of Chemistry and Biochemistry The University of Texas at El Paso 500 W. University Avenue El Paso TX 79968 USA
| | - Aruna N. Nair
- Department of Chemistry and Biochemistry The University of Texas at El Paso 500 W. University Avenue El Paso TX 79968 USA
| | - Venkata S. N. Chava
- Department of Chemistry and Biochemistry The University of Texas at El Paso 500 W. University Avenue El Paso TX 79968 USA
| | - Olivia Fernandez‐Delgado
- Department of Chemistry and Biochemistry The University of Texas at El Paso 500 W. University Avenue El Paso TX 79968 USA
| | - Nageh K. Allam
- Energy Materials Laboratory School of Sciences and Engineering The American University in Cairo New Cairo 11835 Egypt
| | - Steven Stevenson
- Department of Chemistry Purdue University Fort Wayne IN 46805 USA
| | - Sreeprasad T. Sreenivasan
- Department of Chemistry and Biochemistry The University of Texas at El Paso 500 W. University Avenue El Paso TX 79968 USA
| | - Luis Echegoyen
- Department of Chemistry and Biochemistry The University of Texas at El Paso 500 W. University Avenue El Paso TX 79968 USA
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7
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Zhao S, Wang Z, Huang J, Wang L, Liu Y, Liu W, Liu ZQ. Cation-Tuning Induced d-Band Center Modulation on Co-based Spinel Oxide for Rechargeable Zn-Air Batteries. Angew Chem Int Ed Engl 2021; 61:e202114696. [PMID: 34970837 DOI: 10.1002/anie.202114696] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Indexed: 11/06/2022]
Abstract
Atomic substitutions at the tetrahedral site (A Td ) could theoretically achieve an efficient optimization of the charge at the octahedral site (B Oh ) through the A Td -O-B Oh interactions in the spinel oxides (AB2O4). However, the precise control and adjustment of the spinel oxides are still challenging owing to the complexity of their crystal structure. In this work, we demonstrate a simple solvent method to tailor the structures of spinel oxides and further use the spinel oxide composites (ACo2O4/NCNTs, A = Mn, Co, Ni, Cu, Zn) for oxygen electrocatalysis. And the optimized MnCo2O4/NCNTs exhibit high activity and excellent durability for oxygen reduction/evolution reactions. Remarkably, the rechargeable liquid Zn-air battery equipped the MnCo2O4/NCNTs cathode affords a specific capacity of 827 mAh gZn-1 with high power density of 74.63 mW cm-2 and no voltage degradation after 300 cycles at a high charging-discharging rate (5 mA cm-2). The density functional theory (DFT) calculations reveal that the substitution could regulate the ratio of Co3+/Co2+ and thereby lead to the electronic structure modulated accompanied with the movement of d-band center. The tetrahedral and octahedral sites interact through the Mn-O-Co, the Co3+ Oh of MnCo2O4 with the optimal charge structure allows more suitable binding interaction between the active center and the oxygenated species, resulting in superior oxygen electrocatalytic performance. This work not only proves the influence of the charge modulation mechanism on the oxygen catalysis process but also provides novel strategies for the subsequent design of other oxygen catalysis materials.
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Affiliation(s)
- Shenlong Zhao
- The University of Sydney, School of Chemical and Biomolecular Engineering, 28 Bristol Rd, Hurstville, 2220, Sydney, AUSTRALIA
| | - Zepan Wang
- Guangzhou University, School of Chemistry and Chemical Engineering, CHINA
| | - Jiahui Huang
- Guangzhou University, School of Chemistry and Chemical Engineering, CHINA
| | - Ling Wang
- Guangzhou University, School of Chemistry and Chemical Engineering, CHINA
| | - Yangyang Liu
- The University of Sydney, School of Chemical and Biomolecular Engineering, AUSTRALIA
| | - Wenhui Liu
- Guangzhou University, School of Chemistry and Chemical Engineering, CHINA
| | - Zhao-Qing Liu
- Guangzhou University, School of Chemistry and Chemical Engineering, CHINA
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8
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Zhao S, Wang Z, Huang J, Wang L, Liu Y, Liu W, Liu ZQ. Cation‐Tuning Induced d‐Band Center Modulation on Co‐based Spinel Oxide for Rechargeable Zn–Air Batteries. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202114696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shenlong Zhao
- The University of Sydney School of Chemical and Biomolecular Engineering 28 Bristol Rd, Hurstville 2220 Sydney AUSTRALIA
| | - Zepan Wang
- Guangzhou University School of Chemistry and Chemical Engineering CHINA
| | - Jiahui Huang
- Guangzhou University School of Chemistry and Chemical Engineering CHINA
| | - Ling Wang
- Guangzhou University School of Chemistry and Chemical Engineering CHINA
| | - Yangyang Liu
- The University of Sydney School of Chemical and Biomolecular Engineering AUSTRALIA
| | - Wenhui Liu
- Guangzhou University School of Chemistry and Chemical Engineering CHINA
| | - Zhao-Qing Liu
- Guangzhou University School of Chemistry and Chemical Engineering CHINA
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