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Wang Y, Sun J, Sun N, Zhang M, Liu X, Zhang A, Wang L. The spin polarization strategy regulates heterogeneous catalytic activity performance: from fundamentals to applications. Chem Commun (Camb) 2024; 60:7397-7413. [PMID: 38946499 DOI: 10.1039/d4cc02012j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
In recent years, there has been significant attention towards the development of catalysts that exhibit superior performance and environmentally friendly attributes. This surge in interest is driven by the growing demands for energy utilization and storage as well as environmental preservation. Spin polarization plays a crucial role in catalyst design, comprehension of catalytic mechanisms, and reaction control, offering novel insights for the design of highly efficient catalysts. However, there are still some significant research gaps in the current study of spin catalysis. Therefore, it is urgent to understand how spin polarization impacts catalytic reactions to develop superior performance catalysts. Herein, we present a comprehensive summary of the application of spin polarization in catalysis. Firstly, we summarize the fundamental mechanism of spin polarization in catalytic reactions from two aspects of kinetics and thermodynamics. Additionally, we review the regulation mechanism of spin polarization in various catalytic applications and several approaches to modulate spin polarization. Moreover, we discuss the future development of spin polarization in catalysis and propose several potential avenues for further progress. We aim to improve current catalytic systems through implementing a novel and distinctive spin engineering strategy.
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Affiliation(s)
- Yan Wang
- College of Electronic and Optical Engineering, Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), Nanjing 210023, Jiangsu, P. R. China.
| | - Junkang Sun
- College of Electronic and Optical Engineering, Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), Nanjing 210023, Jiangsu, P. R. China.
| | - Ning Sun
- College of Electronic and Optical Engineering, Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), Nanjing 210023, Jiangsu, P. R. China.
| | - Mengyang Zhang
- College of Electronic and Optical Engineering, Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), Nanjing 210023, Jiangsu, P. R. China.
| | - Xianya Liu
- College of Electronic and Optical Engineering, Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), Nanjing 210023, Jiangsu, P. R. China.
| | - Anlei Zhang
- College of Science, Nanjing University of Posts & Telecommunications (NJUPT), Nanjing 210023, Jiangsu, P. R. China.
| | - Longlu Wang
- College of Electronic and Optical Engineering, Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), Nanjing 210023, Jiangsu, P. R. China.
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2
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Jiang T, Li Y, Tang Y, Zhang S, Le D, Rahman TS, Tao F. Breaking Continuously Packed Bimetallic Sites to Singly Dispersed on Nonmetallic Support for Efficient Hydrogen Production. ACS APPLIED MATERIALS & INTERFACES 2024; 16:21757-21770. [PMID: 38632669 DOI: 10.1021/acsami.3c18160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Abstract
We have synthesized Pt1Zn3/ZnO, also termed 0.01 wt %Pt/ZnO-O2-H2, as a catalyst containing singly dispersed single-atom bimetallic sites, also called a catalyst of singly dispersed bimetallic sites or a catalyst of isolated single-atom bimetallic sites. Its catalytic activity in partial oxidation of methanol to hydrogen at 290 °C is found to be 2-3 orders of magnitude higher than that of Pt-Zn bimetallic nanoparticles supported on ZnO, 5.0 wt %Pt/ZnO-N2-H2. Selectivity for H2 on Pt1Zn3/ZnO reaches 96%-100% at 290-330 °C, arising from the uniform coordination environment of single-atom Pt1 in singly dispersed single-atom bimetallic sites, Pt1Zn3 on 0.01 wt %Pt/ZnO-O2-H2, which is sharply different from various coordination environments of Pt atoms in coexisting PtxZny (x ≥ 0, y ≥ 0) sites on Pt-Zn bimetallic nanoparticles. Computational simulations attribute the extraordinary catalytic performance of Pt1Zn3/ZnO to the stronger adsorption of methanol and the lower activation barriers in O-H dissociation of CH3OH, C-H dissociations of CH2O to CO, and coupling of intermediate CO with atomic oxygen to form CO2 on Pt1Zn3/ZnO as compared to those on Pt-Zn bimetallic nanoparticles. It demonstrates that anchoring uniform, isolated single-atom bimetallic sites, also called singly dispersed bimetallic sites on a nonmetallic support can create new catalysts for certain types of reactions with much higher activity and selectivity in contrast to bimetallic nanoparticle catalysts with coexisting, various metallic sites MxAy (x ≥ 0, y ≥ 0). As these single-atom bimetallic sites are cationic and anchored on a nonmetallic support, the catalyst of singly dispersed single-atom bimetallic sites is different from a single-atom alloy nanoparticle catalyst. The critical role of the 0.01 wt %Pt in the extraordinary catalytic performance calls on fundamental studies of the profound role of a trace amount of a metal in heterogeneous catalysis.
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Affiliation(s)
- Tao Jiang
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Yuting Li
- Department of Chemical and Petroleum Engineering, Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, Kansas 66049, United States
| | - Yu Tang
- Department of Chemical and Petroleum Engineering, Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, Kansas 66049, United States
| | - Shiran Zhang
- Department of Chemical and Petroleum Engineering, Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, Kansas 66049, United States
| | - Duy Le
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Talat S Rahman
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Franklin Tao
- Department of Chemical and Petroleum Engineering, Center for Environmentally Beneficial Catalysis, University of Kansas, Lawrence, Kansas 66049, United States
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Liu C, Wu T, Lalanne P, Maier SA. Enhanced Light-Matter Interaction in Metallic Nanoparticles: A Generic Strategy of Smart Void Filling. NANO LETTERS 2024; 24:4641-4648. [PMID: 38579120 PMCID: PMC11036389 DOI: 10.1021/acs.nanolett.4c00810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/26/2024] [Accepted: 03/28/2024] [Indexed: 04/07/2024]
Abstract
The intrinsic properties of materials play a substantial role in light-matter interactions, impacting both bulk metals and nanostructures. While plasmonic nanostructures exhibit strong interactions with photons via plasmon resonances, achieving efficient light absorption/scattering in other transition metals remains a challenge, impeding various applications related to optoelectronics, chemistry, and energy harvesting. Here, we propose a universal strategy to enhance light-matter interaction, through introducing voids onto the surface of metallic nanoparticles. This strategy spans nine metals including those traditionally considered optically inactive. The absorption cross section of void-filled nanoparticles surpasses the value of plasmonic (Ag/Au) counterparts with tunable resonance peaks across a broad spectral range. Notably, this enhancement is achieved under arbitrary polarizations and varied particle sizes and in the presence of geometric disorder, highlighting the universal adaptability. Our strategy holds promise for inspiring emerging devices in photocatalysis, bioimaging, optical sensing, and beyond, particularly when metals other than gold or silver are preferred.
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Affiliation(s)
- Changxu Liu
- Centre
for Metamaterial Research & Innovation, Department of Engineering, University of Exeter, Exeter EX4 4QF, United Kingdom
| | - Tong Wu
- LP2N, Institut d’Optique Graduate School, CNRS, Université
de Bordeaux, Talence 33400, France
| | - Philippe Lalanne
- LP2N, Institut d’Optique Graduate School, CNRS, Université
de Bordeaux, Talence 33400, France
| | - Stefan A. Maier
- School
of Physics and Astronomy, Monash University, Clayton, Victoria 3800, Australia
- Blackett
Laboratory, Imperial College London, London SW7 2BZ, United Kingdom
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4
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Roh Y, Jin Y, Jeon B, Park Y, Yu K, Park JY. Revealing the Loss Mechanism of Chemically-Induced Hot Electron Transport. NANO LETTERS 2024; 24:3490-3497. [PMID: 38466136 DOI: 10.1021/acs.nanolett.4c00330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Hot electrons are crucial for unraveling the intrinsic relationship between chemical reactions and charge transfer in heterogeneous catalysis. Significant research focused on real-time detection of reaction-driven hot electron flow (chemicurrent) to elucidate the energy conversion mechanisms, but it remains elusive because carrier generation contributes to only part of the entire process. Here, a theoretical model for quantifying the chemicurrent yield is presented by clarifying the contributions of hot carrier losses from the internal emission and multiple reflections. The experimental chemicurrent yield verifies our model with a reliable mean free path of hot electrons, emphasizing the importance of comprehensive consideration of the transport process besides hot electron generation. Moreover, Pt nanoparticles (NPs)-decorated Au/TiO2 is examined, showing the role of NPs-induced carrier losses in the performance of catalytic nanodiodes. These findings are expected to contribute to understanding the hot electron detection efficiency and designing nanodiodes with enhanced hot carrier flow and catalytic activity.
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Affiliation(s)
- Yujin Roh
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Yeonghoon Jin
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Beomjoon Jeon
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Yujin Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Kyoungsik Yu
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, 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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Wang Z, Hu R, Wang L, Zhou S. Enhanced Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol over Silica-Coated Pt-Co xO y Hybrid Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2024; 16:924-932. [PMID: 38145368 DOI: 10.1021/acsami.3c16737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
Selective hydrogenation of cinnamaldehyde (CAL) to cinnamyl alcohol (COL) is difficult due to the intrinsic difficulty with thermodynamically easier hydrogenation of C═C bonds. In this work, Pt-CoxOy hybrid nanoparticles encapsulated in mesoporous silica nanospheres (Pt-CoxOy@mSiO2) were synthesized by a sol-gel method, which showed greatly improved COL selectivity for hydrogenation of CAL. At 80 °C and 1.0 MPa of H2, Pt-CoxOy@mSiO2 achieved a CAL conversion of 98.7% with a COL selectivity of 93.5%. In contrast, Pt@mSiO2 yields 3-phenylpropanol (HCOL) as the major product with HCOL selectivity of 67.2%, while PtCo@mSiO2 yields 3-phenylpropionaldehyde with selectivity of 51.8% under the same conditions. The enhanced catalytic performance of Pt-CoxOy@mSiO2 for hydrogenation of CAL to COL is ascribed to the Pt surface electron deficiency induced by metal-oxide interaction, and the protection of active NPs by silica shells results in good catalytic stability.
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Affiliation(s)
- Zizhu Wang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Ru Hu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Lei Wang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Shenghu Zhou
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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6
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Jeon B, Kim D, Kim TS, Lee HK, Park JY. Enhanced Hot Electron Flow and Catalytic Synergy by Engineering Core-Shell Structures on Au-Pd Nanocatalysts. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37927055 DOI: 10.1021/acsami.3c10325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
The synergistic catalytic performances of bimetallic catalysts are often attributed to the reaction mechanism associated with the alloying process of the catalytic metals. Chemically induced hot electron flux is strongly correlated with catalytic activity, and the interference between two metals at the atomic level can have a huge impact on the hot electron generation on the bimetallic catalysts. In this study, we investigate the correlation between catalytic synergy and hot electron chemistry driven by the electron coupling effect using a model system of Au-Pd bimetallic nanoparticles. We show that the bimetallic nanocatalysts exhibit enhanced catalytic activity under the hydrogen oxidation reaction compared with that of monometallic Pd nanocatalysts. Analysis of the hot electron flux generated in each system revealed the formation of Au/PdOx interfaces, resulting in high reactivity on the bimetallic catalyst. In further experiments with engineering the Au@Pd core-shell structures, we reveal that the hot electron flux, when the topmost surface Pd atoms were less affected by inner Au, due to the concrete shell, was smaller than the alloyed one. The alloyed bimetallic catalyst forming the metal-oxide interfaces has a more direct effect on the hot electron chemistry, as well as on the catalytic reactivity. The great significance of this study is in the confirmation that the change in the hot electron formation rate with the metal-oxide interfaces can be observed by shell engineering of nanocatalysts.
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Affiliation(s)
- Beomjoon Jeon
- 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
| | - Taek-Seung Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Han-Koo Lee
- Beamline Research Division, Pohang Accelerator Laboratory (PAL), 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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Mikhailova AA, Lepeshkin SV, Baturin VS, Maltsev AP, Uspenskii YA, Oganov AR. Ultralow reaction barriers for CO oxidation in Cu-Au nanoclusters. NANOSCALE 2023; 15:13699-13707. [PMID: 37563984 DOI: 10.1039/d3nr02044d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Systematic structure prediction of CunAum nanoclusters was carried out for a wide compositional area (n + m ≤ 15) using the evolutionary algorithm USPEX and DFT calculations. The obtained structural data allowed us to assess the local stability of clusters and their suitability for catalysis of CO oxidation. Using these two criteria, we selected several most promising clusters for an accurate study of their catalytic properties. The adsorption energies of reagents, reaction paths, and activation energies were calculated. We found several cases with low activation energies and explained these cases using the patterns of structural change at the moment of CO2 desorption. The unique case is the Cu7Au6 cluster, which has extremely low activation energies for all transition states (below 0.05 eV). We thus showed that higher flexibility due to the binary nature of nanoclusters makes it possible to achieve the maximum catalytic activity. Considering the lower price of copper, Cu-Au nanoparticles are a promising new family of catalysts.
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Affiliation(s)
- Anastasiia A Mikhailova
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, 121205 Moscow, Russian Federation.
| | - Sergey V Lepeshkin
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, 121205 Moscow, Russian Federation.
- Lebedev Physical Institute, Russian Academy of Sciences, 53 Lenin Avenue, 119991 Moscow, Russian Federation
- Vernadsky Institute of Geochemistry and Analytical Chemistry Russian Academy of Sciences, 19 Kosygin St, 119991 Moscow, Russian Federation
| | - Vladimir S Baturin
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, 121205 Moscow, Russian Federation.
| | - Alexey P Maltsev
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, 121205 Moscow, Russian Federation.
| | - Yurii A Uspenskii
- Lebedev Physical Institute, Russian Academy of Sciences, 53 Lenin Avenue, 119991 Moscow, Russian Federation
| | - Artem R Oganov
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, 121205 Moscow, Russian Federation.
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8
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Lee SW, Kim H, Park JY. How Hot Electron Generation at the Solid-Liquid Interface Is Different from the Solid-Gas Interface. NANO LETTERS 2023; 23:5373-5380. [PMID: 36930862 DOI: 10.1021/acs.nanolett.3c00173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Excitation of hot electrons by energy dissipation under exothermic chemical reactions on metal catalyst surfaces occurs at both solid-gas and solid-liquid interfaces. Despite extensive studies, a comparative operando study directly comparing electronic excitation by electronically nonadiabatic interactions at solid-gas and solid-liquid interfaces has not been reported. Herein, on the basis of our in situ techniques for monitoring energy dissipation as a chemicurrent using a Pt/n-Si nanodiode sensor, we observed the generation of hot electrons in both gas and liquid phases during H2O2 decomposition. As a result of comparing the current signal and oxygen evolution rate in the two phases, surprisingly, the efficiency of reaction-induced excitation of hot electrons increased by ∼100 times at the solid-liquid interface compared to the solid-gas interface. The boost of hot electron excitation in the liquid phase is due to the presence of an ionic layer lowering the potential barrier at the junction for transferring hot electrons.
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Affiliation(s)
- Si Woo Lee
- Department of Chemistry Education, Korea National University of Education (KNUE), Chungbuk 28173, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Heeyoung Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, 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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9
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Manna N, Singh M, Kurungot S. Microporous 3D-Structured Hierarchically Entangled Graphene-Supported Pt 3Co Alloy Catalyst for PEMFC Application with Process-Friendly Features. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37267475 DOI: 10.1021/acsami.3c03372] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To improve the oxygen reduction reaction (ORR) performance in a proton-exchange membrane fuel cell (PEMFC) cathode with respect to mass activity and durability, a suitable electrocatalyst design strategy is essentially needed. Here, we have prepared a sub-three nm-sized platinum (Pt)-cobalt (Co) alloy (Pt3Co)-supported N-doped microporous 3D graphene (Pt3Co/pNEGF) by using the polyol synthesis method. A microwave-assisted synthesis method was employed to prepare the catalyst based on the 3D porous carbon support with a large pore volume and dense micro-/mesoporous surfaces. The ORR performance of Pt3Co/pNEGF closely matches with the state-of-the-art commercial Pt/C catalyst in 0.1 M HClO4, with a small overpotential of 10 mV. The 3D microporous structure of the N-doped graphene significantly improves the mass transport of the reactant and thus the overall ORR performance. As a result of the lower loading of Pt in Pt3Co/pNEGF as compared to that in Pt/C, the alloy catalyst achieved 1.5 times higher mass activity than Pt/C. After 10,000 cycles, the difference in the electrochemically active surface area (ECSA) and half-wave potential (E1/2) of Pt3Co/pNEGF is found to be 5 m2 gPt-1 (ΔECSA) and 24 mV (ΔE1/2), whereas, for Pt/C, these values are 9 m2 gPt-1 and 32 mV, respectively. Finally, in a realistic perspective, single-cell testing of a membrane electrode assembly (MEA) was made by sandwiching the Pt3Co/pNEGF-coated gas diffusion layers as the cathode displayed a maximum power density of 800 mW cm-2 under H2-O2 feed conditions with a clear indication of helping the system in the mass-transfer region (i.e., the high current dragging condition). The nature of the I-V polarization shows a progressively lower slope in this region of the polarization plot compared to a similar system made from its Pt/C counterpart and a significantly improved performance throughout the polarization region in the case of the system made from the Pt3Co/NEGF catalyst (without the microwave treatment) counterpart. These results validate the better process friendliness of Pt3Co/pNEGF as a PEMFC electrode-specific catalyst owing to its unique texture with 3D architecture and well-defined porosity with better structural endurance.
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Affiliation(s)
- Narugopal Manna
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Mayank Singh
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Sreekumar Kurungot
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
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10
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Maor II, Heyte S, Elishav O, Mann-Lahav M, Thuriot-Roukos J, Paul S, Grader GS. Performance of Cu/ZnO Nanosheets on Electrospun Al 2O 3 Nanofibers in CO 2 Catalytic Hydrogenation to Methanol and Dimethyl Ether. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:635. [PMID: 36839003 PMCID: PMC9967565 DOI: 10.3390/nano13040635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 01/30/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
The synthesis of methanol and dimethyl ether (DME) from carbon dioxide (CO2) and green hydrogen (H2) offers a sustainable pathway to convert CO2 emissions into value-added products. This heterogeneous catalytic reaction often uses copper (Cu) catalysts due to their low cost compared with their noble metal analogs. Nevertheless, improving the activity and selectivity of these Cu catalysts for these products is highly desirable. In the present study, a new architecture of Cu- and Cu/Zn-based catalysts supported on electrospun alumina nanofibers were synthesized. The catalysts were tested under various reaction conditions using high-throughput equipment to highlight the role of the hierarchical fibrous structure on the reaction activity and selectivity. The Cu or Cu/ZnO formed a unique structure of nanosheets, covering the alumina fiber surface. This exceptional morphology provides a large surface area, up to ~300 m2/g, accessible for reaction. Maximal production of methanol (~1106 gmethanolKgCu-1∙h-1) and DME (760 gDMEKgCu-1∙h-1) were obtained for catalysts containing 7% wt. Cu/Zn with a weight ratio of 2.3 Zn to Cu (at 300 °C, 50 bar). The promising results in CO2 hydrogenation to methanol and DME obtained here point out the significant advantage of nanofiber-based catalysts in heterogeneous catalysis.
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Affiliation(s)
- Itzhak I. Maor
- The Wolfson Department of Chemical Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel
| | - Svetlana Heyte
- Université de Lille, Centre National de la Recherche Scientifique (CNRS), Centrale Lille, Université d’Artois, UMR 8181, Unité de Catalyse et Chimie du Solide (UCCS), F-59000 Lille, France
| | - Oren Elishav
- The Wolfson Department of Chemical Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel
| | - Meirav Mann-Lahav
- The Wolfson Department of Chemical Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel
| | - Joelle Thuriot-Roukos
- Université de Lille, Centre National de la Recherche Scientifique (CNRS), Centrale Lille, Université d’Artois, UMR 8181, Unité de Catalyse et Chimie du Solide (UCCS), F-59000 Lille, France
| | - Sébastien Paul
- Université de Lille, Centre National de la Recherche Scientifique (CNRS), Centrale Lille, Université d’Artois, UMR 8181, Unité de Catalyse et Chimie du Solide (UCCS), F-59000 Lille, France
| | - Gideon S. Grader
- The Wolfson Department of Chemical Engineering, Technion—Israel Institute of Technology, Haifa 3200003, Israel
- The Nancy & Stephan Grand Technion Energy Program (GTEP), Technion—Israel Institute of Technology, Haifa 3200003, Israel
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11
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Lee SW, Jeon B, Lee H, Park JY. Hot Electron Phenomena at Solid-Liquid Interfaces. J Phys Chem Lett 2022; 13:9435-9448. [PMID: 36194546 DOI: 10.1021/acs.jpclett.2c02319] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Understanding the role of energy dissipation and charge transfer under exothermic chemical reactions on metal catalyst surfaces is important for elucidating the fundamental phenomena at solid-gas and solid-liquid interfaces. Recently, many surface chemistry studies have been conducted on the solid-liquid interface, so correlating electronic excitation in the liquid-phase with the reaction mechanism plays a crucial role in heterogeneous catalysis. In this review, we introduce the detection principle of electron transfer at the solid-liquid interface by developing cutting-edge technologies with metal-semiconductor Schottky nanodiodes. The kinetics of hot electron excitation are well correlated with the reaction rates, demonstrating that the operando method for understanding nonadiabatic interactions is helpful in studying the reaction mechanism of surface molecular processes. In addition to the detection of hot electrons excited by a catalytic reaction, we highlight recent results on how the transfer of the hot electrons influences surface chemical and photoelectrochemical reactions.
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Affiliation(s)
- Si Woo Lee
- Department of Chemistry Education, Korea National University of Education (KNUE), Chungbuk28173, Republic of Korea
| | - Beomjoon Jeon
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon34141, Republic of Korea
| | - Hyosun Lee
- Department of Materials Science and Engineering, University of Seoul, Seoul04066, Republic of Korea
| | - Jeong Young Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon34141, Republic of Korea
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12
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Guo T, Huang Y, Zhang N, Chen T, Wang C, Xing X, Lu Z, Wen L. Modulating the Chemical Microenvironment of Pt Nanoparticles within Ultrathin Nanosheets of Isoreticular MOFs for Enhanced Catalytic Activity. Inorg Chem 2022; 61:2538-2545. [PMID: 35080382 DOI: 10.1021/acs.inorgchem.1c03425] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The catalytic activity of metal nanoparticles (MNPs) embedded in metal-organic frameworks (MOFs) is affected by the electronic interactions between MNPs and MOFs. In this report, we fabricate a series of ultrathin nanosheets of isoreticular MOFs (NMOFs) with different metal nodes as supports and successfully encapsulate Pt NPs within these NMOFs, affording Pt@NMOF-Co, Pt@NMOF-Ni1Co1, Pt@NMOF-Ni3Co1, and Pt@NMOF-Ni nanocomposites. The microchemical environment on the surface of Pt NPs can be modulated by varying the metal nodes of NMOFs. The catalytic activity of the nanocomposites toward liquid-phase hydrogenation of 1-hexene shows obvious difference, in which Pt@NMOF-Ni possesses the highest activity followed by Pt@NMOF-Ni3Co1, Pt@NMOF-Ni1Co1, and Pt@NMOF-Co in a decreasing order of activity. Obviously, increasing gradually the amount of Ni2+ nodes in the carriers can improve the catalytic activity. The difference of catalytic activity of the nanocomposites might originate from the distinct electron interactions between Pt NPs and NMOFs, as ascertained by X-ray photoelectron spectroscopy spectrum and density functional theory calculations. This work provides a rare example that the catalytic activity of MNPs could be controlled by accurately regulating the microchemical environment using ultrathin NMOFs as supports.
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Affiliation(s)
- Taolian Guo
- College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Yi Huang
- College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Nannan Zhang
- College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Tian Chen
- College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China
| | - Chao Wang
- College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China
| | - Xing Xing
- College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China
| | - Zhenda Lu
- College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China
| | - Lili Wen
- College of Chemistry, Central China Normal University, Wuhan 430079, China
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13
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Foucher AC, Marcella N, Lee JD, Rosen DJ, Tappero R, Murray CB, Frenkel AI, Stach EA. Structural and Valence State Modification of Cobalt in CoPt Nanocatalysts in Redox Conditions. ACS NANO 2021; 15:20619-20632. [PMID: 34780150 DOI: 10.1021/acsnano.1c09450] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Platinum is the primary catalyst for many chemical reactions in the field of heterogeneous catalysis. However, platinum is both expensive and rare. Therefore, it is advantageous to combine Pt with another metal to reduce cost while also enhancing stability. To that end, Pt is often combined with Co to form Co-Pt nanocrystals. However, dynamical restructuring effects that occur during reaction in Co-Pt ensembles can impact catalytic properties. In this study, model Co2Pt3 nanoparticles supported on carbon were characterized during a redox cycle with two in situ approaches, namely, X-ray absorption spectroscopy (XAS) and scanning transmission electron microscopy (STEM) using a multimodal microreactor. The sample was exposed to temperatures up to 500 °C under H2, and then to O2 at 300 °C. Irreversible segregation of Co in the Co2Pt3 particles was seen during redox cycling, and substantial changes of the oxidation state of Co were observed. After H2 treatment, a fraction of Co could not be fully reduced and incorporated into a mixed Co-Pt phase. Reoxidation of the sample increased Co segregation, and the segregated material had a different valence state than in the fresh, oxidized sample. This in situ study describes dynamical restructuring effects in CoPt nanocatalysts at the atomic scale that are crucial to understand in order to improve the design of catalysts used in major chemical processes.
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Affiliation(s)
- Alexandre C Foucher
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Nicholas Marcella
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
| | - Jennifer D Lee
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Daniel J Rosen
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Ryan Tappero
- Photon Sciences Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Christopher B Murray
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Anatoly I Frenkel
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
- Division of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Eric A Stach
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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14
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Babu P, Dash SR, Behera A, Vijayaraghavan T, Ashok A, Parida K. Prominence of Cu in a plasmonic Cu-Ag alloy decorated SiO 2@S-doped C 3N 4 core-shell nanostructured photocatalyst towards enhanced visible light activity. NANOSCALE ADVANCES 2021; 4:150-162. [PMID: 36132949 PMCID: PMC9418918 DOI: 10.1039/d1na00633a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 10/17/2021] [Indexed: 05/20/2023]
Abstract
A series of Cu-Ag bimetal alloys decorated on SiO2 and the fabrication of few-layer S-doped graphitic carbon nitride (SC) warped over it to form a core-shell nanostructured morphology have been demonstrated and well characterized through various physiochemical techniques. HRTEM data confirmed the formation of a compact nanojunction between the SiO2 and SC, where Cu-Ag is embedded uniformly with an average particle size of 1.3 nm. The Ag : Cu (1 : 3) between SiO2 and SC produces 1730 μmol h-1 g-1 of H2 under visible light illumination. Moreover, 6.2-fold current enhancement in the case of Ag : Cu (1 : 3) as compared to the Ag-loaded core-shell nanostructured photocatalyst indicates higher electron-hole-pair separation. The excellent activity was due to the synergistic alloying and plasmonic effect of Ag and Cu. DFT studies reveal that the Cu atom in the Cu-Ag bimetal alloy plays a pivotal role in the generation of H2, and the reaction proceeds via a 4-membered transition state. The mechanistic insight proceeds from the generation of hot electrons due to the LSPR effect and their transfer to the SC layer via a compact nanojunction.
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Affiliation(s)
- Pradeepta Babu
- Centre for Nanoscience and Nanotechnology (CNSNT), Siksha 'O' Anusandhan Bhubaneswar 751030 India
| | - Soumya Ranjan Dash
- Physical and Material Chemistry Division, CSIR-NCL Pune Dr Homi Bhabha Road Pune 411008 India
| | - Arjun Behera
- Centre for Nanoscience and Nanotechnology (CNSNT), Siksha 'O' Anusandhan Bhubaneswar 751030 India
| | - T Vijayaraghavan
- Functional Materials Laboratory, PSG Institute of Advanced Studies Coimbatore 641004 India
| | - Anuradha Ashok
- Functional Materials Laboratory, PSG Institute of Advanced Studies Coimbatore 641004 India
| | - Kulamani Parida
- Centre for Nanoscience and Nanotechnology (CNSNT), Siksha 'O' Anusandhan Bhubaneswar 751030 India
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15
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Zaman S, Su Y, Dong C, Qi R, Huang L, Qin Y, Huang Y, Li F, You B, Guo W, Li Q, Ding S, Yu Xia B. Scalable Molten Salt Synthesis of Platinum Alloys Planted in Metal–Nitrogen–Graphene for Efficient Oxygen Reduction. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202115835] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Shahid Zaman
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service Failure Hubei Engineering Research Center for Biomaterials and Medical Protective Materials Wuhan National Laboratory for Optoelectronics School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) 1037 Luoyu Road Wuhan 430074 China
| | - Ya‐Qiong Su
- School of Chemistry Xi'an Key Laboratory of Sustainable Energy Materials Chemistry State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiao Tong University Xi An Shi, Xi'an 710049 China
| | - Chung‐Li Dong
- Department of Physics Tamkang University New Taipei City Taiwan
| | - Ruijuan Qi
- Department of Information Science and Technology East China Normal University 500 Dongchuan Road Shanghai 200240 China
| | - Lei Huang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service Failure Hubei Engineering Research Center for Biomaterials and Medical Protective Materials Wuhan National Laboratory for Optoelectronics School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) 1037 Luoyu Road Wuhan 430074 China
| | - Yanyang Qin
- School of Chemistry Xi'an Key Laboratory of Sustainable Energy Materials Chemistry State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiao Tong University Xi An Shi, Xi'an 710049 China
| | - Yu‐Cheng Huang
- Department of Physics Tamkang University New Taipei City Taiwan
| | - Fu‐Min Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service Failure Hubei Engineering Research Center for Biomaterials and Medical Protective Materials Wuhan National Laboratory for Optoelectronics School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) 1037 Luoyu Road Wuhan 430074 China
| | - Bo You
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service Failure Hubei Engineering Research Center for Biomaterials and Medical Protective Materials Wuhan National Laboratory for Optoelectronics School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) 1037 Luoyu Road Wuhan 430074 China
| | - Wei Guo
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service Failure Hubei Engineering Research Center for Biomaterials and Medical Protective Materials Wuhan National Laboratory for Optoelectronics School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) 1037 Luoyu Road Wuhan 430074 China
| | - Qing Li
- State Key Laboratory of Material Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan Hubei 430074 China
| | - Shujiang Ding
- School of Chemistry Xi'an Key Laboratory of Sustainable Energy Materials Chemistry State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiao Tong University Xi An Shi, Xi'an 710049 China
| | - Bao Yu Xia
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service Failure Hubei Engineering Research Center for Biomaterials and Medical Protective Materials Wuhan National Laboratory for Optoelectronics School of Chemistry and Chemical Engineering Huazhong University of Science and Technology (HUST) 1037 Luoyu Road Wuhan 430074 China
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16
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Zaman S, Su YQ, Dong CL, Qi R, Huang L, Qin Y, Huang YC, Li FM, You B, Guo W, Li Q, Ding S, Yu Xia B. Scalable Molten Salt Synthesis of Platinum Alloys Planted in Metal-Nitrogen-Graphene for Efficient Oxygen Reduction. Angew Chem Int Ed Engl 2021; 61:e202115835. [PMID: 34894036 DOI: 10.1002/anie.202115835] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Indexed: 01/02/2023]
Abstract
Fuel cells are considered as a promising alternative to the existing traditional energy systems towards a sustainable future. Nevertheless, the synthesis of efficient and robust platinum (Pt) based catalysts remains a challenge for practical applications. In this work, we present a simple and scalable molten-salt synthesis method for producing a low-platinum (Pt) nanoalloy implanted in metal-nitrogen-graphene. The as-prepared low-Pt alloyed graphene exhibits a high oxygen reduction activity of 1.29 A mgPt -1 and excellent durability over 30 000 potential cycles. The catalyst nanoarchitecture of graphene encased Pt nanoalloy provides a robust capability against nanoparticle migration and corrosion due to a strong metal-support interaction. Similarly, advanced characterization and theoretical calculations show that the multiple active sites in platinum alloyed graphene synergistically account for the improved oxygen reduction. This work not only provides an efficient and robust low-Pt catalyst but also a facile design idea and scalable preparation technique for integrated catalysts to achieve more profound applications in fuel cells and beyond.
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Affiliation(s)
- Shahid Zaman
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Wuhan National Laboratory for Optoelectronics, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, 430074, China
| | - Ya-Qiong Su
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiao Tong University, Xi An Shi, Xi'an, 710049, China
| | - Chung-Li Dong
- Department of Physics, Tamkang University, New Taipei City, Taiwan
| | - Ruijuan Qi
- Department of Information Science and Technology, East China Normal University, 500 Dongchuan Road, Shanghai, 200240, China
| | - Lei Huang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Wuhan National Laboratory for Optoelectronics, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, 430074, China
| | - Yanyang Qin
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiao Tong University, Xi An Shi, Xi'an, 710049, China
| | - Yu-Cheng Huang
- Department of Physics, Tamkang University, New Taipei City, Taiwan
| | - Fu-Min Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Wuhan National Laboratory for Optoelectronics, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, 430074, China
| | - Bo You
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Wuhan National Laboratory for Optoelectronics, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, 430074, China
| | - Wei Guo
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Wuhan National Laboratory for Optoelectronics, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, 430074, China
| | - Qing Li
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Shujiang Ding
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiao Tong University, Xi An Shi, Xi'an, 710049, China
| | - Bao Yu Xia
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Wuhan National Laboratory for Optoelectronics, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, 430074, China
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17
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Collins SE, Baltanás MA, Delgado JJ, Borgna A, Bonivardi AL. CO2 hydrogenation to methanol on Ga2O3-Pd/SiO2 catalysts: Dual oxide-metal sites or (bi)metallic surface sites? Catal Today 2021. [DOI: 10.1016/j.cattod.2020.07.048] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Kim J, Choi H, Kim D, Park JY. Operando Surface Studies on Metal-Oxide Interfaces of Bimetal and Mixed Catalysts. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02340] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jeongjin Kim
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Hanseul Choi
- 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
| | - 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
| | - 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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19
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Nan B, Fu Q, Yu J, Shu M, Zhou LL, Li J, Wang WW, Jia CJ, Ma C, Chen JX, Li L, Si R. Unique structure of active platinum-bismuth site for oxidation of carbon monoxide. Nat Commun 2021; 12:3342. [PMID: 34099668 PMCID: PMC8184822 DOI: 10.1038/s41467-021-23696-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 04/23/2021] [Indexed: 12/02/2022] Open
Abstract
As the technology development, the future advanced combustion engines must be designed to perform at a low temperature. Thus, it is a great challenge to synthesize high active and stable catalysts to resolve exhaust below 100 °C. Here, we report that bismuth as a dopant is added to form platinum-bismuth cluster on silica for CO oxidation. The highly reducible oxygen species provided by surface metal-oxide (M-O) interface could be activated by CO at low temperature (~50 °C) with a high CO2 production rate of 487 μmolCO2·gPt-1·s-1 at 110 °C. Experiment data combined with density functional calculation (DFT) results demonstrate that Pt cluster with surface Pt-O-Bi structure is the active site for CO oxidation via providing moderate CO adsorption and activating CO molecules with electron transformation between platinum atom and carbon monoxide. These findings provide a unique and general approach towards design of potential excellent performance catalysts for redox reaction.
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Affiliation(s)
- Bing Nan
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
- University of Chinese Academy of Science, Beijing, China
| | - Qiang Fu
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, China
| | - Jing Yu
- Shanghai Institute of Measurement and Testing Technology, Shanghai, China
| | - Miao Shu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | - Lu-Lu Zhou
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, China
| | - Jinying Li
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, China
| | - Wei-Wei Wang
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, China
| | - Chun-Jiang Jia
- Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, China.
| | - Chao Ma
- Center for High Resolution Electron Microscopy, College of Materials Science and Engineering, Hunan University, Changsha, China.
| | - Jun-Xiang Chen
- Division of China, TILON Group Technology Limited, Shanghai, China
| | - Lina Li
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
- Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory, Shanghai Advanced Research Institute, Shanghai, China
| | - Rui Si
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China.
- Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory, Shanghai Advanced Research Institute, Shanghai, China.
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20
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Oseghale CO, Mogudi BM, Onisuru OR, Akinnawo CA, Fapojuwo DP, Meijboom R. Stable and Surface‐active Co Nanoparticles Formed from Cation (
x
) Promoted Au/
x
‐Co
3
O
4
(
x
=Cs) as Selective Catalyst for [2+2+1] Cyclization Reactions. ChemCatChem 2021. [DOI: 10.1002/cctc.202001841] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Charles O. Oseghale
- Department of Chemical Sciences Research Center for Synthesis and Catalysis University of Johannesburg Auckland Park 2006 Johannesburg South Africa
| | - Batsile M. Mogudi
- Department of Chemical Sciences Research Center for Synthesis and Catalysis University of Johannesburg Auckland Park 2006 Johannesburg South Africa
| | - Oluwatayo Racheal Onisuru
- Department of Chemical Sciences Research Center for Synthesis and Catalysis University of Johannesburg Auckland Park 2006 Johannesburg South Africa
| | - Christianah Aarinola Akinnawo
- Department of Chemical Sciences Research Center for Synthesis and Catalysis University of Johannesburg Auckland Park 2006 Johannesburg South Africa
| | - Dele Peter Fapojuwo
- Department of Chemical Sciences Research Center for Synthesis and Catalysis University of Johannesburg Auckland Park 2006 Johannesburg South Africa
| | - Reinout Meijboom
- Department of Chemical Sciences Research Center for Synthesis and Catalysis University of Johannesburg Auckland Park 2006 Johannesburg South Africa
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21
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Jeon B, Lee C, Park JY. Electronic Control of Hot Electron Transport Using Modified Schottky Barriers in Metal-Semiconductor Nanodiodes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:9252-9259. [PMID: 33587596 DOI: 10.1021/acsami.0c22108] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Hot electron flux, generated by both incident light energy and the heat of the catalytic reaction, is a major element for energy conversion at the surface. Controlling hot electron flux in a reversible manner is extremely important for achieving high energy conversion efficiency. Here we demonstrate that hot electron flux can be controlled by tuning the Schottky barrier height. This phenomenon was monitored by using a Schottky nanodiode composed of a metal-semiconductor. The formation of a Schottky barrier at a nanometer scale inevitably accompanies an intrinsic image potential between the metal-semiconductor junction, which lowers the effective Schottky barrier height. When a reverse bias is applied to the nanodiode, an additional image potential participates in a secondary barrier lowering, leading to the increased hot electron flow. Besides, a decrease of tunneling width results in facile electron transport through the barrier. The increased hot electron flux by the chemical reaction (chemicurrent) and by the photon absorption (photocurrent) indicates hot electrons are captured more effectively by modifying the Schottky barrier. This study can shed light on a quantitative understanding and application of charge behavior at metal-semiconductor interfaces, in solar energy conversion, or in a catalytic reaction.
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Affiliation(s)
- Beomjoon Jeon
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Changhwan Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Jeong Young Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
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22
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Yoon S, Jo J, Jeon B, Lee J, Cho MG, Oh MH, Jeong B, Shin TJ, Jeong HY, Park JY, Hyeon T, An K. Revealing Charge Transfer at the Interface of Spinel Oxide and Ceria during CO Oxidation. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04091] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Sinmyung Yoon
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jinwoung Jo
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Beomjoon Jeon
- 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
| | - Jihyeon Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Min Gee Cho
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Myoung Hwan Oh
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Beomgyun Jeong
- Research Center for Materials Analysis, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Tae Joo Shin
- UNIST Central Research Facilities, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Hu Young Jeong
- UNIST Central Research Facilities, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, 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
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Kwangjin An
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
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23
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Size controlled Pt over mesoporous NiO nanocomposite catalysts: thermal catalysis vs. photocatalysis. JOURNAL OF POROUS MATERIALS 2021. [DOI: 10.1007/s10934-020-00978-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Lee SW, Kim JM, Park W, Lee H, Lee GR, Jung Y, Jung YS, Park JY. Controlling hot electron flux and catalytic selectivity with nanoscale metal-oxide interfaces. Nat Commun 2021; 12:40. [PMID: 33397946 PMCID: PMC7782808 DOI: 10.1038/s41467-020-20293-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 11/18/2020] [Indexed: 11/10/2022] Open
Abstract
Interaction between metal and oxides is an important molecular-level factor that influences the selectivity of a desirable reaction. Therefore, designing a heterogeneous catalyst where metal-oxide interfaces are well-formed is important for understanding selectivity and surface electronic excitation at the interface. Here, we utilized a nanoscale catalytic Schottky diode from Pt nanowire arrays on TiO2 that forms a nanoscale Pt-TiO2 interface to determine the influence of the metal-oxide interface on catalytic selectivity, thereby affecting hot electron excitation; this demonstrated the real-time detection of hot electron flow generated under an exothermic methanol oxidation reaction. The selectivity to methyl formate and hot electron generation was obtained on nanoscale Pt nanowires/TiO2, which exhibited ~2 times higher partial oxidation selectivity and ~3 times higher chemicurrent yield compared to a diode based on Pt film. By utilizing various Pt/TiO2 nanostructures, we found that the ratio of interface to metal sites significantly affects the selectivity, thereby enhancing chemicurrent yield in methanol oxidation. Density function theory (DFT) calculations show that formation of the Pt-TiO2 interface showed that selectivity to methyl formate formation was much larger in Pt nanowire arrays than in Pt films because of the different reaction mechanism.
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Affiliation(s)
- Si Woo Lee
- 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
| | - Jong Min Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Materials Architecturing Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Woonghyeon Park
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Hyosun Lee
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon, 34141, Republic of Korea
- Korea Institute of Industrial Technology (KITECH), Intelligent Sustainable Material R&D Group, Cheonan, 31056, Republic of Korea
| | - Gyu Rac Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Yousung Jung
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
| | - Yeon Sik Jung
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, 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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25
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Choi JIJ, Kim TS, Kim D, Lee SW, Park JY. Operando Surface Characterization on Catalytic and Energy Materials from Single Crystals to Nanoparticles. ACS NANO 2020; 14:16392-16413. [PMID: 33210917 DOI: 10.1021/acsnano.0c07549] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Modern surface science faces two major challenges, a materials gap and a pressure gap. While studies on single crystal surface in ultrahigh vacuum have uncovered the atomic and electronic structures of the surface, the materials and environmental conditions of commercial catalysis are much more complicated, both in the structure of the materials and in the accessible pressure range of analysis instruments. Model systems and operando surface techniques have been developed to bridge these gaps. In this Review, we highlight the current trends in the development of the surface characterization techniques and methodologies in more realistic environments, with emphasis on recent research efforts at the Korea Advanced Institute of Science and Technology. We show principles and applications of the microscopic and spectroscopic surface techniques at ambient pressure that were used for the characterization of atomic structure, electronic structure, charge transport, and the mechanical properties of catalytic and energy materials. Ambient pressure scanning tunneling microscopy and X-ray photoelectron spectroscopy allow us to observe the surface restructuring that occurs during oxidation, reduction, and catalytic processes. In addition, we introduce the ambient pressure atomic force microscopy that revealed the morphological, mechanical, and charge transport properties that occur during the catalytic and energy conversion processes. Hot electron detection enables the monitoring of catalytic reactions and electronic excitations on the surface. Overall, the information on the nature of catalytic reactions obtained with operando spectroscopic and microscopic techniques may bring breakthroughs in some of the global energy and environmental problems the world is facing.
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Affiliation(s)
- Joong Il Jake Choi
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Taek-Seung Kim
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Daeho Kim
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Si Woo Lee
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
| | - Jeong Young Park
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, South Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea
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26
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Gu L, Wu R. Density functional study of relaxation of adsorbate vibration modes: Dominance of anharmonic interaction. J Chem Phys 2020; 153:184109. [PMID: 33187426 DOI: 10.1063/5.0027915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Formulation and density functional workflow for calculating the lifetime of vibrational modes of molecular adsorbates on solid surfaces due to vibration-phonon coupling are presented. The anharmonic coupling is invoked to give the correct description of the origin of temperature dependence. Using pyrrolidine (C4H9N) absorbed on the Cu(001) surface as a concrete example, we show that the anharmonic coupling can be one to two orders more significant than the harmonic interaction for the broadening of vibrational spectra, especially as temperature increases. These results challenge the common assumption that the anharmonic interaction is weak and call for attention of considering its effect in quantum relaxation and related problems.
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Affiliation(s)
- Lei Gu
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
| | - Ruqian Wu
- Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
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27
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Kim H, Kim YJ, Jung YS, Park JY. Enhanced flux of chemically induced hot electrons on a Pt nanowire/Si nanodiode during decomposition of hydrogen peroxide. NANOSCALE ADVANCES 2020; 2:4410-4416. [PMID: 36132908 PMCID: PMC9419632 DOI: 10.1039/d0na00602e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 07/23/2020] [Indexed: 06/15/2023]
Abstract
Identifying the charge transfer at metal-semiconductor interfaces by detecting hot electrons is crucial for understanding the mechanism of catalytic reactions and the development of an engineered catalyst structure. Over the last two decades, the development of catalytic nanodiodes has enabled us to directly measure chemically induced hot electron flux and relate it to catalytic activity. A crucial question is the role of interfacial sites at metal-oxide interfaces in determining catalytic activity and hot electron flux. To address this issue, a new design of catalytic nanodiodes employs nanoscale Pt wires and a semiconducting substrate. Here, we fabricated a novel Schottky nanodiode, a platinum nanowire (Pt NW) deposited Si catalytic nanodiode (Pt NW/Si) that exhibits an increased number of metal-semiconductor interfacial sites (Pt/Si) compared with a Pt film-based Si nanodiode (Pt film/Si). Two types of Pt/Si catalytic nanodiodes were utilized to investigate the electronic properties of the Pt/Si interface by detecting hot electrons and observing reactivity during the H2O2 decomposition reaction in the liquid-solid system. We show that the Pt NWs had higher catalytic activity because of the surface defect sites on the Pt NW surface. We observed a higher chemicurrent yield on the Pt NW/Si nanodiode compared with the Pt film/Si nanodiode, which is associated with the shortened travel length for the hot electrons at the edge of the Pt nanowires and results in a higher transmission probability for hot electron transport through metal-oxide interfaces.
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Affiliation(s)
- Heeyoung Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) Daejeon 305-701 Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science Daejeon 305-701 Republic of Korea
| | - Ye Ji Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST) Daejeon 305-701 Republic of Korea
| | - Yeon Sik Jung
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST) Daejeon 305-701 Republic of Korea
| | - Jeong Young Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) Daejeon 305-701 Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science Daejeon 305-701 Republic of Korea
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28
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Lee H, Song K, Lee M, Park JY. In Situ Visualization of Localized Surface Plasmon Resonance-Driven Hot Hole Flux. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001148. [PMID: 33101854 PMCID: PMC7578898 DOI: 10.1002/advs.202001148] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 07/03/2020] [Indexed: 06/04/2023]
Abstract
Nonradiative surface plasmon decay produces highly energetic electron-hole pairs with desirable characteristics, but the measurement and harvesting of nonequilibrium hot holes remain challenging due to ultrashort lifetime and diffusion length. Here, the direct observation of LSPR-driven hot holes created in a Au nanoprism/p-GaN platform using photoconductive atomic force microscopy (pc-AFM) is demonstrated. Significant enhancement of photocurrent in the plasmonic platforms under light irradiation is revealed, providing direct evidence of plasmonic hot hole generation. Experimental and numerical analysis verify that a confined |E|-field surrounding a single Au nanoprism spurs resonant coupling between localized surface plasmon resonance (LSPR) and surface charges, thus boosting hot hole generation. Furthermore, geometrical and size dependence on the extraction of LSPR-driven hot holes suggests an optimized pathway for their efficient utilization. The direct visualization of hot hole flow at the nanoscale provides significant opportunities for harnessing the underlying nature and potential of plasmonic hot holes.
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Affiliation(s)
- Hyunhwa Lee
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST)Daejeon34133Republic of Korea
- Center for Nanomaterials and Chemical ReactionsInstitute for Basic Science (IBS)Daejeon31414Republic of Korea
| | - Kyoungjae Song
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST)Daejeon34133Republic of Korea
- Center for Nanomaterials and Chemical ReactionsInstitute for Basic Science (IBS)Daejeon31414Republic of Korea
| | - Moonsang Lee
- Research Center for Materials AnalysisKorea Basic Science Institute (KBSI)Daejeon34133Republic of Korea
| | - Jeong Young Park
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST)Daejeon34133Republic of Korea
- Center for Nanomaterials and Chemical ReactionsInstitute for Basic Science (IBS)Daejeon31414Republic of Korea
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29
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Kim TS, Kim J, Song HC, Kim D, Jeong B, Lee J, Shin JW, Ryoo R, Park JY. Catalytic Synergy on PtNi Bimetal Catalysts Driven by Interfacial Intermediate Structures. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02467] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Taek-Seung Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Jeongjin Kim
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Hee Chan Song
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Daeho Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Beomgyun Jeong
- Research Center for Materials Analysis, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Jouhahn Lee
- Research Center for Materials Analysis, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Jae Won Shin
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Ryong Ryoo
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Jeong Young Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
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30
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Huang K, Xu P, He X, Wang R, Wang Y, Yang H, Zhang R, Lei M, Tang H. Annealing‐Free Platinum−Cobalt Alloy Nanoparticles on Nitrogen‐Doped Mesoporous Carbon with Boosted Oxygen Electroreduction Performance. ChemElectroChem 2020. [DOI: 10.1002/celc.202000830] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kai Huang
- State Key Laboratory of Information Photonics and Optical CommunicationsSchool of ScienceBeijing University of Posts and Telecommunications Beijing 100876 PR China
| | - Pengfu Xu
- State Key Laboratory of Information Photonics and Optical CommunicationsSchool of ScienceBeijing University of Posts and Telecommunications Beijing 100876 PR China
- Beijing Key Laboratory of Space-ground Interconnection and ConvergenceBeijing University of Posts and Telecommunications Beijing 100876 PR China
| | - Xian He
- State Key Laboratory of Information Photonics and Optical CommunicationsSchool of ScienceBeijing University of Posts and Telecommunications Beijing 100876 PR China
| | - Ruyue Wang
- State Key Laboratory of Information Photonics and Optical CommunicationsSchool of ScienceBeijing University of Posts and Telecommunications Beijing 100876 PR China
- Beijing Key Laboratory of Space-ground Interconnection and ConvergenceBeijing University of Posts and Telecommunications Beijing 100876 PR China
| | - Yonggang Wang
- State Key Laboratory of Information Photonics and Optical CommunicationsSchool of ScienceBeijing University of Posts and Telecommunications Beijing 100876 PR China
| | - Hujiang Yang
- State Key Laboratory of Information Photonics and Optical CommunicationsSchool of ScienceBeijing University of Posts and Telecommunications Beijing 100876 PR China
| | - Ru Zhang
- State Key Laboratory of Information Photonics and Optical CommunicationsSchool of ScienceBeijing University of Posts and Telecommunications Beijing 100876 PR China
- Beijing Key Laboratory of Space-ground Interconnection and ConvergenceBeijing University of Posts and Telecommunications Beijing 100876 PR China
| | - Ming Lei
- State Key Laboratory of Information Photonics and Optical CommunicationsSchool of ScienceBeijing University of Posts and Telecommunications Beijing 100876 PR China
| | - Haolin Tang
- State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology Wuhan 430070 PR China
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31
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Babu P, Naik B. Cu-Ag Bimetal Alloy Decorated SiO 2@TiO 2 Hybrid Photocatalyst for Enhanced H 2 Evolution and Phenol Oxidation under Visible Light. Inorg Chem 2020; 59:10824-10834. [PMID: 32692542 DOI: 10.1021/acs.inorgchem.0c01325] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
With a broader objective to replace visible light driven Pt-based photoelectrochemical/catalytic hydrogen evolution, a series of cost-effective bimetallic nanoalloys of Cu-Ag have been deposited on core-shell nanostructured SiO2@TiO2 through a facile reduction route. The physicochemical properties, i.e. crystal structure, morphology, chemical environment, and optical properties of Cu-Ag bimetal alloy decorated SiO2@TiO2 hybrid photocatalyst, have been thoroughly investigated through X-ray diffraction, high resolution transmission electron microscopy, field emission scanning electron microscopy, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance spectroscopy, and photoluminescence spectroscopy, respectively. TEM study confirms the coating of an ultrathin layer of TiO2 shell on 100 nm sized SiO2 core, and about 4.5 nm of Ag-Cu nanoalloys are uniformly distributed on the core-shell nanostructure. The higher light absorption throughout the visible range and better separation of charge carrier by Ag-Cu (1:3) deposited SiO2@TiO2 hybrid compared to other counterparts is confirmed from UV-vis, diffuse reflectance spectroscopy, photoluminescence, and electrochemical impedance studies. Eightfold higher photocurrent enhancements, threefold enhanced photocatalytic hydrogen generation, and twofold higher phenol oxidation activities of Ag-Cu (1:3) deposited SiO2@TiO2 hybrid compared to those of the monometallic plasmonic catalyst may be attributed to the synergetic effect of enriched light harvesting and surface plasmon induced hot electron transfer from the nanoalloy to the TiO2 interface, resulting in efficient charge transfer.
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Affiliation(s)
- Pradeepta Babu
- Center for Nanoscience and Nanotechnology, Siksha 'O' Anusandhan, Bhubaneswar 751030, India
| | - Brundabana Naik
- Department of Chemistry, Siksha 'O' Anusandhan, Bhubaneswar 751030, India
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32
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Controllable growth of palladium on gold multipod nanoparticles and their enhanced electrochemical oxygen reduction reaction performances. J Catal 2020. [DOI: 10.1016/j.jcat.2020.04.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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33
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Song HC, Lee GR, Jeon K, Lee H, Lee SW, Jung YS, Park JY. Engineering Nanoscale Interfaces of Metal/Oxide Nanowires to Control Catalytic Activity. ACS NANO 2020; 14:8335-8342. [PMID: 32539337 DOI: 10.1021/acsnano.0c02347] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The interfacial effect between a metal catalyst and its various supporting transition metal oxides on the catalytic activity of heterogeneous catalysis has been extensively explored; engineering interfacial sites of metal supported on metal oxide has been found to influence catalytic performance. Here, we investigate the interfacial effect of Pt nanowires (NWs) vertically and alternatingly stacked with titanium dioxide (TiO2) or cobalt monoxide (CoO) NWs, which exhibit a strong metal-support interaction under carbon monoxide (CO) oxidation. High-resolution nanotransfer printing based on nanoscale pattern replication and e-beam evaporation were utilized to obtain the Pt NWs cross-stacked on the CoO or TiO2 NW on the silicon dioxide (SiO2) substrate with varying numbers of nanowires. The morphology and interfacial area were precisely determined by means of atomic force microscopy and scanning electron microscopy. The cross-stacked Pt/TiO2 NW and Pt/CoO NW catalysts were estimated with CO oxidation under 40 Torr CO and 100 Torr O2 from 200 to 240 °C. Higher catalytic activity was found on the Pt/CoO NW catalyst than on Pt/TiO2 NWs and Pt NWs, which indicates the significance of nanoscale metal-oxide interfaces. As the number of nanowire layers increased, the catalytic activity became saturated. Our study demonstrates the interfacial role of nanoscale metal-oxide interfaces under CO oxidation, which has intriguing applications in the smart design of catalytic materials.
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Affiliation(s)
- Hee Chan Song
- Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 34141, Republic of Korea
| | - Gyu Rac Lee
- Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Kiung Jeon
- Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Hyunhwa Lee
- Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 34141, Republic of Korea
| | - Si Woo Lee
- Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 34141, Republic of Korea
| | - Yeon Sik Jung
- Department of Materials Science and Engineering, KAIST, Daejeon 34141, Republic of Korea
| | - Jeong Young Park
- Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 34141, Republic of Korea
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34
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Pt Nanoclusters Controllably Prepared by Impregnation Method and Its Catalytic Property for Glycerol Oxidation. Catal Letters 2020. [DOI: 10.1007/s10562-020-03320-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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35
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Wu Q, Zhou L, Schatz GC, Zhang Y, Guo H. Mechanistic Insights into Photocatalyzed H2 Dissociation on Au Clusters. J Am Chem Soc 2020; 142:13090-13101. [DOI: 10.1021/jacs.0c04491] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Qisheng Wu
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - Linsen Zhou
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
| | - George C. Schatz
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Yu Zhang
- Physics and Chemistry of Materials, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Hua Guo
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, New Mexico 87131, United States
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36
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Xiong J, Wei Y, Zhang Y, Zhang P, Yu Q, Mei X, Liu X, Zhao Z, Liu J. Synergetic Effect of K Sites and Pt Nanoclusters in an Ordered Hierarchical Porous Pt-KMnOx/Ce0.25Zr0.75O2 Catalyst for Boosting Soot Oxidation. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01911] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jing Xiong
- State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, 18 Fuxue Road, Chang Ping District, Beijing 102249, People’s Republic of China
| | - Yuechang Wei
- State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, 18 Fuxue Road, Chang Ping District, Beijing 102249, People’s Republic of China
- Beijing Key Laboratory of Optical Detection Technology for Oil and Gas, China University of Petroleum, Beijing 102249, People’s Republic of China
| | - Yilin Zhang
- State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, 18 Fuxue Road, Chang Ping District, Beijing 102249, People’s Republic of China
| | - Peng Zhang
- State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, 18 Fuxue Road, Chang Ping District, Beijing 102249, People’s Republic of China
| | - Qi Yu
- State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, 18 Fuxue Road, Chang Ping District, Beijing 102249, People’s Republic of China
| | - Xuelei Mei
- State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, 18 Fuxue Road, Chang Ping District, Beijing 102249, People’s Republic of China
| | - Xi Liu
- School of Chemistry and Chemical, In-situ Center for Physical Science, Shanghai Jiao Tong University, 200240, Shanghai, People’s Republic of China
- Syncat@Beijing, SynfuelsChina Co. Ltd, Beijing 101407 People’s Republic of China
| | - Zhen Zhao
- State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, 18 Fuxue Road, Chang Ping District, Beijing 102249, People’s Republic of China
| | - Jian Liu
- State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, 18 Fuxue Road, Chang Ping District, Beijing 102249, People’s Republic of China
- Beijing Key Laboratory of Optical Detection Technology for Oil and Gas, China University of Petroleum, Beijing 102249, People’s Republic of China
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37
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Li C, Liu Q, Boscoboinik JA, Zhou G. Tuning the surface composition of Cu 3Au binary alloy. Phys Chem Chem Phys 2020; 22:3379-3389. [PMID: 31976989 DOI: 10.1039/c9cp05729c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Using ambient-pressure X-ray photoelectron spectroscopy, here we report the real-time monitoring of dynamic surface composition evolution of Cu3Au(100) in response to the imposed environmental stimuli. Segregation of Au to the pristine surface under ultrahigh vacuum annealing leads to the phase separation with pure Au at the surface and alloyed Au in the subsurface. Upon switching to an oxidizing atmosphere, oxygen adsorption drives the surface segregation of Cu along with inward migration of pure Au to the subsurface. Switching to a H2 atmosphere results in oxygen loss from the oxygenated surface, thereby promoting Au surface segregation and reverting the surface to the pristine state with the Au termination. These measurements demonstrated the tunability of the surface composition of the binary alloy by utilizing the interplay between the tendency of segregating a more noble constituent to the surface and the tendency to segregate the more reactive one with the chemical stimuli.
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Affiliation(s)
- Chaoran Li
- Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York at Binghamton, Binghamton, New York 13902, USA.
| | - Qianqian Liu
- Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York at Binghamton, Binghamton, New York 13902, USA.
| | | | - Guangwen Zhou
- Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York at Binghamton, Binghamton, New York 13902, USA.
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38
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Sun X, Zhu W, Wu D, Li C, Wang J, Zhu Y, Chen X, Boscoboinik JA, Sharma R, Zhou G. Surface-reaction induced structural oscillations in the subsurface. Nat Commun 2020; 11:305. [PMID: 31949160 PMCID: PMC6965640 DOI: 10.1038/s41467-019-14167-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 12/16/2019] [Indexed: 11/09/2022] Open
Abstract
Surface and subsurface are commonly considered as separate entities because of the difference in the bonding environment and are often investigated separately due to the experimental challenges in differentiating the surface and subsurface effects. Using in-situ atomic-scale transmission electron microscopy to resolve the surface and subsurface at the same time, we show that the hydrogen-CuO surface reaction results in structural oscillations in deeper atomic layers via the cycles of ordering and disordering of oxygen vacancies in the subsurface. Together with atomistic calculations, we show that the structural oscillations in the subsurface are induced by the hydrogen oxidation-induced cyclic loss of oxygen from the oxide surface. These results demonstrate the propagation of the surface reaction dynamics into the deeper layers in inducing nonstoichiometry in the subsurface and have significant implications in modulating various chemical processes involving surface-subsurface mass transport such as heterogeneous catalysis, oxidation, corrosion and carburization.
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Affiliation(s)
- Xianhu Sun
- Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York, Binghamton, NY, 13902, USA
| | - Wenhui Zhu
- Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York, Binghamton, NY, 13902, USA
| | - Dongxiang Wu
- Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York, Binghamton, NY, 13902, USA
| | - Chaoran Li
- Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York, Binghamton, NY, 13902, USA
| | - Jianyu Wang
- Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York, Binghamton, NY, 13902, USA
| | - Yaguang Zhu
- Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York, Binghamton, NY, 13902, USA
| | - Xiaobo Chen
- Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York, Binghamton, NY, 13902, USA
| | | | - Renu Sharma
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA
| | - Guangwen Zhou
- Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York, Binghamton, NY, 13902, USA.
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39
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Mousavi S, Nazari B, Keshavarz MH, Bordbar AK. A Simple Method for Safe Determination of the Activity of Palladium on Activated Carbon Catalysts in the Hydrogenation of Cinnamic Acid to Hydrocinnamic Acid. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06087] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Sajjad Mousavi
- Department of Chemistry, Malek-ashtar University of Technology, Shahin-shahr 83145/115, Iran
| | - Behzad Nazari
- Department of Chemistry, Malek-ashtar University of Technology, Shahin-shahr 83145/115, Iran
| | - Mohammad H. Keshavarz
- Department of Chemistry, Malek-ashtar University of Technology, Shahin-shahr 83145/115, Iran
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40
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Nawaz MH, Xu J, Song Z, Riaz S, Han D, Niu L. N-Doped Graphene Oxide Decorated with PtCo Nanoparticles for Immobilization of Double-Stranded Deoxyribonucleic Acid and Investigation of Clenbuterol-Induced DNA Damage. ACS OMEGA 2019; 4:16524-16530. [PMID: 31616831 PMCID: PMC6788047 DOI: 10.1021/acsomega.9b02184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 09/09/2019] [Indexed: 06/10/2023]
Abstract
We demonstrate here a facile hydrothermal-assisted formation of PtCo alloy nanoparticles (NPs) and their simultaneous anchoring on the graphitic surface of N-doped graphene oxide (NGO). Doping induced nanopores in the carbon surface to facilitate the uniform and homogeneous anchoring of alloy nanoparticles. It was revealed that the formation of PtCo NPs on an NGO interface plodded excellent tendency toward double-stranded deoxyribonucleic acid (dsDNA). The dsDNA immobilization was enabled by the presence of several oxidation states of Pt and Co. The same property was further used to monitor the direct detection of dsDNA damage induced by clenbuterol via screen-printed carbon electrodes. Cyclic voltammetric and electrochemical impedance spectroscopic characterization traced well the dsDNA attachment on the modified electrode surface. Differential pulsed voltammetry was further used as a tool to monitor the characteristic guanine peak before and after incubating with clenbuterol used as a damage probe for the dsDNA. The findings can further be appurtenant in exploring dsDNA immobilization protocols and developing analytical methods for determination of various dsDNA damaging agents.
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Affiliation(s)
- Mian Hasnain Nawaz
- Center
for Advanced Analytical Science, c/o School of Chemistry and Chemical
Engineering, Guangzhou University, Guangzhou 510006, P.R. China
- State
Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory
for Modern Analytical Techniques, Changchun
Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
- Interdisciplinary Research
Centre in Biomedical Materials (IRCBM) and Department of
Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Jianan Xu
- State
Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory
for Modern Analytical Techniques, Changchun
Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
| | - Zhongqian Song
- State
Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory
for Modern Analytical Techniques, Changchun
Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
| | - Sara Riaz
- Interdisciplinary Research
Centre in Biomedical Materials (IRCBM) and Department of
Chemistry, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Dongxue Han
- Center
for Advanced Analytical Science, c/o School of Chemistry and Chemical
Engineering, Guangzhou University, Guangzhou 510006, P.R. China
- State
Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory
for Modern Analytical Techniques, Changchun
Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
| | - Li Niu
- Center
for Advanced Analytical Science, c/o School of Chemistry and Chemical
Engineering, Guangzhou University, Guangzhou 510006, P.R. China
- State
Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory
for Modern Analytical Techniques, Changchun
Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
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41
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Lee SW, Park W, Lee H, Chan Song H, Jung Y, Park JY. Intrinsic Relation between Hot Electron Flux and Catalytic Selectivity during Methanol Oxidation. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02402] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Si Woo Lee
- 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
| | - Woonghyeon Park
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hyosun Lee
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Hee Chan Song
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Yousung Jung
- Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, 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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42
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Recent In Situ/Operando Spectroscopy Studies of Heterogeneous Catalysis with Reducible Metal Oxides as Supports. Catalysts 2019. [DOI: 10.3390/catal9050477] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
For heterogeneous catalysis, the metal catalysts supported on reducible metal oxides, especially CeO2 and TiO2, have long been a research focus because of their excellent catalytic performance in a variety of catalytic reactions. Detailed understanding of the promotion effect of reducible metal oxides on catalytic reactions is beneficial to the rational design of new catalysts. The important catalytic roles of reducible metal oxides are attributed to their intimate interactions with the supported metals (e.g., strong metal-support interaction, electronic metal-support interaction) and unique support structures (e.g., oxygen vacancy, reversible valence change, surface hydroxyl). However, the structures of the catalysts and reaction mechanisms are strongly affected by environmental conditions. For this reason, in situ/operando spectroscopy studies under working conditions are necessary to obtain accurate information about the structure-activity relationship. In this review, the recent applications of the in situ/operando spectroscopy methodology on metal catalysts with reducible metal oxides as supports are summarized.
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43
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Lee H, Yoon S, Jo J, Jeon B, Hyeon T, An K, Park JY. Enhanced hot electron generation by inverse metal-oxide interfaces on catalytic nanodiode. Faraday Discuss 2019; 214:353-364. [PMID: 30810549 DOI: 10.1039/c8fd00136g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Identifying the electronic behavior of metal-oxide interfaces is essential for understanding the origin of catalytic properties and for engineering catalyst structures with the desired reactivity. For a mechanistic understanding of hot electron dynamics at inverse oxide/metal interfaces, we employed a new catalytic nanodiode by combining Co3O4 nanocubes (NCs) with a Pt/TiO2 nanodiode that exhibits nanoscale metal-oxide interfaces. We show that the chemicurrent, which is well correlated with the catalytic activity, is enhanced at the inverse oxide/metal (CoO/Pt) interfaces during H2 oxidation. Based on quantitative visualization of the electronic transfer efficiency with chemicurrent yield, we show that electronic perturbation of oxide/metal interfacial sites not only promotes the generation of hot electrons, but improves catalytic activity.
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Affiliation(s)
- Hyosun Lee
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea.
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44
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Song HC, Oh S, Kim SH, Lee SW, Moon SY, Choi H, Kim SH, Kim Y, Oh J, Park JY. The effect of the oxidation states of supported oxides on catalytic activity: CO oxidation studies on Pt/cobalt oxide. Chem Commun (Camb) 2019; 55:9503-9506. [DOI: 10.1039/c9cc03770e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The strong metal–oxide interaction of platinum nanoparticles (PtNPs) deposited on two types of cobalt oxides, CoO and Co3O4, was investigated using CO oxidation.
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45
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Jain R, Gopinath CS. New Strategy toward a Dual Functional Nanocatalyst at Ambient Conditions: Influence of the Pd-Co Interface in the Catalytic Activity of Pd@Co Core-Shell Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2018; 10:41268-41278. [PMID: 30403345 DOI: 10.1021/acsami.8b12940] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bimetallic nanostructures with a combination of noble and nonnoble metals hold promise for improving catalyst activity and selectivity. Here, we report the synthesis of Pd@Co (PC) core-shell morphology nanoparticles with three different ratios of palladium (Pd) and cobalt (Co), and a possibility to fine tune the ratio of core and shell thickness. PC exhibits superior and selective hydrogenation as well as oxidation catalytic activity at ambient or near-ambient conditions. Various characterization techniques have been employed to confirm the core-shell morphology. Without any pre-treatment or activation, fresh catalysts with different Pd to Co ratios, that is, 2:1, 1:1, and 1:2, were subjected to olefin (phenylacetylene) hydrogenation and oxidation (styrene to styrene oxide) reaction. The catalytic activity results demonstrate that the 1:1 ratio of Pd/Co is the most active composition for controlled and stepwise reduction of phenyl acetylene to styrene and then to ethyl benzene; 1:1 Pd/Co shows 100% styrene conversion in 30 min. with an order of magnitude higher turnover frequency than other catalysts. The 1:1 PC ratio is also the most active composition for selective oxidation of styrene to styrene oxide. NAPXPS (near-ambient pressure XPS) results show that the active sites for catalytic C═C hydrogenation and oxidation reaction are Co0 and Co3+, respectively. However, the superior catalytic performance can be attributed to Co0 (for reduction) or Co3+ (for oxidation), and the Pd-Co interface plays a critical role in stabilizing the required functional character. NAPXPS results confirm that the superior catalytic performance can be attributed not only to Co0 or Co3+, but also to the Pd-Co interface. The electronic effect and synergism between Co and Pd helps Co to stabilize in different oxidation states depending on the reaction conditions, and making it a dual functional catalyst.
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Affiliation(s)
- Ruchi Jain
- Catalysis Division , National Chemical Laboratory , Dr. Homi Bhabha Road , Pune 411 008 , India
| | - Chinnakonda S Gopinath
- Catalysis Division , National Chemical Laboratory , Dr. Homi Bhabha Road , Pune 411 008 , India
- Centre of Excellence on Surface Science , National Chemical Laboratory , Pune 411 008 , India
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46
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Kim SM, Mun JH, Lee SW, An H, Kim HY, Kim SO, Park JY. Compositional effect of two-dimensional monodisperse AuPd bimetallic nanoparticle arrays fabricated by block copolymer nanopatterning on catalytic activity of CO oxidation. Chem Commun (Camb) 2018; 54:13734-13737. [PMID: 30456410 DOI: 10.1039/c8cc07963c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a straightforward approach for fabricating AuPd nanocatalysts based on self-assembled block copolymer nanopatterning. CO oxidation was carried out on AuPd alloy nanoparticles and the activity increased with increasing Pd content; this synergistic activity can be precisely tuned by varying the chemical composition. Theoretical calculations suggest that Pd clusters are required to bind and dissociate O2 for oxidation of coadsorbed CO molecules. Our results suggest that the geometric configuration of the Pd atoms on the surface are a key factor in the catalytic activity.
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Affiliation(s)
- Sun Mi Kim
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 34141, Republic of Korea
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47
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Lee SW, Lee H, Lee DG, Oh S, Lee IS, Park JY. Facile Tuning of Metal/Oxide Interface in Hollow Nanoreactor Affecting Catalytic Activity and Selectivity. Catal Letters 2018. [DOI: 10.1007/s10562-018-2600-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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48
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Li XC, She FS, Shen D, Liu CP, Chen LH, Li Y, Deng Z, Chen ZH, Wang HE. Coherent nanoscale cobalt/cobalt oxide heterostructures embedded in porous carbon for the oxygen reduction reaction. RSC Adv 2018; 8:28625-28631. [PMID: 35542476 PMCID: PMC9084347 DOI: 10.1039/c8ra04256j] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 08/06/2018] [Indexed: 12/12/2022] Open
Abstract
Cost-effective and efficient electrocatalysts for the oxygen reduction reaction (ORR) are crucial for fuel cells and metal–air batteries.
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Affiliation(s)
- Xue-Cheng Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
| | - Fa-Shuang She
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
| | - Dong Shen
- Department of Chemistry and Center of Diamond and Advanced Films (COSDAF)
- City University of Hong Kong
- China
| | - Chao-Ping Liu
- Department of Physics
- City University of Hong Kong
- China
| | - Li-Hua Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
| | - Yu Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
| | - Zhao Deng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
| | - Zhen-Hua Chen
- Shanghai Synchrotron Radiation Facility (SSRF)
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai 201800
- China
| | - Hong-En Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- China
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