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Hong S, Kim D, Kim KJ, Park JY. Facet-Controlled Cu 2O Support Enhances Catalytic Activity of Pt Nanoparticles for CO Oxidation. J Phys Chem Lett 2023:5241-5248. [PMID: 37263187 DOI: 10.1021/acs.jpclett.3c00937] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The metal-support interaction plays a crucial role in determining the catalytic activity of supported metal catalysts. Changing the facet of the support is a promising strategy for catalytic control via constructing a well-defined metal-support nanostructure. Herein, we developed cubic and octahedral Cu2O supports with (100) and (111) facets terminated, respectively, and Pt nanoparticles (NPs) were introduced. The in situ characterizations revealed the facet-dependent encapsulation of the Pt NPs by a CuO layer due to the oxidation of the Cu2O support during the CO oxidation reaction. The CuO layer on Pt at cubic Cu2O (Pt/c-Cu2O) significantly enhanced catalytic performance, while the thicker CuO layer on Pt at octahedral Cu2O suppressed CO conversion. The formation of a thin CuO layer is attributed to the dominant Pt-O-Cu bond at the Pt/c-Cu2O interface, which suppresses the adsorption of oxygen molecules. This investigation provides insight into designing high-performance catalysts via engineering the interface interaction.
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Affiliation(s)
- Seunghwa Hong
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Daeho Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Ki-Jeong Kim
- Beamline Research Division, Pohang Accelerator Laboratory (PAL), POSTECH, Pohang 37673, Republic of Korea
| | - Jeong Young Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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2
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Reddy KP, Kim D, Hong S, Kim KJ, Ryoo R, Park JY. Tuning CO 2 Hydrogenation Selectivity through Reaction-Driven Restructuring on Cu-Ni Bimetal Catalysts. ACS APPLIED MATERIALS & INTERFACES 2023; 15:9373-9381. [PMID: 36763569 DOI: 10.1021/acsami.2c20832] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Tuning the selectivity of CO2 hydrogenation is of significant scientific interest, especially using nickel-based catalysts. Fundamental insights into CO2 hydrogenation on Ni-based catalysts demonstrate that CO is a primary intermediate, and product selectivity is strongly dependent on the oxidation state of Ni. Therefore, modifying the electronic structure of the nickel surface is a compelling strategy for tuning product selectivity. Herein, we synthesized well dispersed Cu-Ni bimetallic nanoparticles (NPs) using a simple hydrothermal method for CO selective CO2 hydrogenation. A detailed study on the monometallic (Ni and Cu) and bimetallic (CuxNi1-x) catalysts supported on γ-Al2O3 was performed to increase CO selectivity while maintaining the high reaction rate. The Cu0.5Ni0.5/γ-Al2O3 catalyst shows a high CO2 conversion and more CO product selectivity than its monometallic counterparts. The surface electronic and geometric structure of Cu0.5Ni0.5 bimetallic NPs was studied using ambient pressure X-ray photoelectron spectroscopy (AP-XPS) and in situ diffuse reflectance infrared Fourier-transform spectroscopy under reaction conditions. The Cu core atoms migrate toward the surface, resulting in the restructuring of the Cu@Ni core-shell structure to a Cu-Ni alloy during the reaction and functioning as the active site by enhancing CO desorption. A systematic correlation is obtained between catalytic activity from a continuous fixed-bed flow reactor and the surface electronic structural details derived from AP-XPS results, establishing the structure-activity relationship. This investigation contributes to providing a strategy for controlling CO2 hydrogenation selectivity by modifying the surface structure of bimetallic NP catalysts.
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Affiliation(s)
- Kasala Prabhakar Reddy
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Daeho Kim
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Seunghwa Hong
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Ki-Jeong Kim
- Beamline Research Division, Pohang Accelerator Laboratory (PAL), Pohang 37673, Republic of Korea
| | - Ryong Ryoo
- KENTECH Laboratory for Chemical, Environmental and Climate Technology, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksinro, Naju 58330, Republic of Korea
| | - Jeong Young Park
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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3
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Liu Z, Yu X, Yang F, Wang K, Zhang J, Zhao N, Chen L, Niu J. Synthesis of Co‐doped Cu
2
O Particles and Evaluation of their Photocatalytic Activity in the Degradation of Norfloxacin. ChemistrySelect 2022. [DOI: 10.1002/slct.202203682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Zongbin Liu
- School of Science Xi'an University of Technology 710048 Xi'an China
| | - Xiaojiao Yu
- School of Science Xi'an University of Technology 710048 Xi'an China
| | - Fan Yang
- School of Science Xi'an University of Technology 710048 Xi'an China
| | - Kai Wang
- School of Science Xi'an University of Technology 710048 Xi'an China
| | - Jian Zhang
- School of Science Xi'an University of Technology 710048 Xi'an China
| | - Ningning Zhao
- School of Science Xi'an University of Technology 710048 Xi'an China
| | - Lei Chen
- School of Science Xi'an University of Technology 710048 Xi'an China
| | - Jinfen Niu
- School of Science Xi'an University of Technology 710048 Xi'an China
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4
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Kanungo SS, Mishra AK, Mhamane NB, Marelli UK, Kumar D, Gopinath CS. Possible Fine-Tuning of Methane Activation toward C2 Oxygenates by 3d-Transition Metal-Ions Doped Nano-Ceria-Zirconia. Inorg Chem 2022; 61:19577-19587. [DOI: 10.1021/acs.inorgchem.2c03493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Subhashree S. Kanungo
- Catalysis and Inorganic Chemistry Division, CSIR─National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Abhaya Kumar Mishra
- Catalysis and Inorganic Chemistry Division, CSIR─National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
| | - Nitin B. Mhamane
- Catalysis and Inorganic Chemistry Division, CSIR─National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | - Udaya Kiran Marelli
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
- Organic Chemistry Division, CSIR─National Chemical Laboratory, Pune 411 008, India
| | - Dharmesh Kumar
- Shell Technology Centre, Hardware Park, Bengaluru, Karnataka 562149, India
- Qatar Shell Research and Technology Centre, QSTP, P.O. Box 3747, Doha 3747, Qatar
| | - Chinnakonda S. Gopinath
- Catalysis and Inorganic Chemistry Division, CSIR─National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
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5
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Uniformly Dispersed Cu Nanoparticles over Mesoporous Silica as a Highly Selective and Recyclable Ethanol Dehydrogenation Catalyst. Catalysts 2022. [DOI: 10.3390/catal12091049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Selective dehydrogenation of ethanol to acetaldehyde has been considered as an important pathway to produce acetaldehyde due to the atom economy and easy separation of acetaldehyde and hydrogen. Copper catalysts have attracted much attention due to the high activity of Cu species in O-H and C-H bonds oxidative cleavage, and low process cost; however, the size of the Cu nanoparticle is difficult to control since it is easily suffers from metal sintering at high temperatures. In this work, the Cu/KIT-6 catalyst exhibited an ultra-high metal dispersion of 62.3% prepared by an electrostatic adsorption method, due to the advantages of the confinement effect of mesoporous nanostructures and the protective effect of ammonia water on Cu nanoparticles. The existence of an oxidation atmosphere had a significant effect on the valence state of copper species and enhancing moderate acid sites. The catalyst treated by reduction and then oxidation possessed a moderate/weak acid site ratio of ~0.42 and a suitable proportion of Cu+/Cu0 ratio of ~0.53, which conceivably rendered its superior ethanol conversion of 96.8% and full acetaldehyde selectivity at 250 °C. The catalyst also maintained a high selectivity of >99% to acetaldehyde upon time-on-stream of 288 h.
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Patra KK, Liu Z, Lee H, Hong S, Song H, Abbas HG, Kwon Y, Ringe S, Oh J. Boosting Electrochemical CO 2 Reduction to Methane via Tuning Oxygen Vacancy Concentration and Surface Termination on a Copper/Ceria Catalyst. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kshirodra Kumar Patra
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro,
Yuseong-gu, Daejeon 34141, Republic of Korea
- Catalysis Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Zhu Liu
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Hojeong Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Seungwon Hong
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro,
Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Hakhyeon Song
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro,
Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Hafiz Ghulam Abbas
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Youngkook Kwon
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Stefan Ringe
- Department of Chemistry, Korea University, Seoul 02841, Republic of Korea
| | - Jihun Oh
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro,
Yuseong-gu, Daejeon 34141, Republic of Korea
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Tang D, Xu D, Luo Z, Ke J, Zhou Y, Li L, Sun J. Highly Dispersion Cu2O QDs Decorated Bi2WO6 S-Scheme Heterojunction for Enhanced Photocatalytic Water Oxidation. NANOMATERIALS 2022; 12:nano12142455. [PMID: 35889679 PMCID: PMC9322928 DOI: 10.3390/nano12142455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 07/13/2022] [Accepted: 07/15/2022] [Indexed: 12/26/2022]
Abstract
Developing suitable photocatalysts for the oxygen evolution reaction (OER) is still a challenging issue for efficient water splitting due to the high requirements to create a significant impact on water splitting reaction kinetics. Herein, n-type Bi2WO6 with flower-like hierarchical structure and p-type Cu2O quantum dots (QDs) are coupled together to construct an efficient S-scheme heterojunction, which could enhance the migration efficiency of photogenerated charge carriers. The electrochemical properties are investigated to explore the transportation features and donor density of charge carriers in the S-scheme heterojunction system. Meanwhile, the as-prepared S-scheme heterojunction presents improved photocatalytic activity towards water oxidation in comparison with the sole Bi2WO6 and Cu2O QDs systems under simulated solar light irradiation. Moreover, the initial O2 evolution rate of the Cu2O QDs/Bi2WO6 heterojunction system is 2.3 and 9.7 fold that of sole Bi2WO6 and Cu2O QDs systems, respectively.
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Affiliation(s)
- Diyong Tang
- Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central Minzu University, Wuhan 430074, China; (Z.L.); (L.L.); (J.S.)
- Correspondence:
| | - Desheng Xu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China; (D.X.); (J.K.); (Y.Z.)
| | - Zhipeng Luo
- Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central Minzu University, Wuhan 430074, China; (Z.L.); (L.L.); (J.S.)
| | - Jun Ke
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China; (D.X.); (J.K.); (Y.Z.)
| | - Yuan Zhou
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430073, China; (D.X.); (J.K.); (Y.Z.)
| | - Lizhong Li
- Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central Minzu University, Wuhan 430074, China; (Z.L.); (L.L.); (J.S.)
| | - Jie Sun
- Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central Minzu University, Wuhan 430074, China; (Z.L.); (L.L.); (J.S.)
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Song HC, Han G, Reddy KP, Choi M, Ryoo R, Park JY. Synergistic interactions between water and the metal/oxide interface in CO oxidation on Pt/CeO2 model catalysts. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.06.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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