1
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Cheng CY, Shen YM, Huang WH, Chang CC, Tsai CC, Lin CJ, Lin YG, Lu YR, Dong CL, Su WN, Chen SY, Kumar K, Chen HY, Tsai CJ, Chen CL. Electronic and Atomic Structural Properties Associated with Enhanced Photodegradation Activity in Mo-Doped TiO 2 Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:19506-19516. [PMID: 39205649 DOI: 10.1021/acs.langmuir.4c01946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
The efficacy and structural evolution of Mo-doped titania nanoparticles (MTNPs) as advanced photocatalysts for degrading methyl blue (MB) are investigated by X-ray absorption spectroscopy (XAS). The 3 wt % MTNP, characterized by uniform size and anatase structure, exhibits higher efficiency. The spectral analyses unveiled structural variations in the TiO6 octahedral structure and revealed an active site of the distorted square pyramidal structure symmetry (C4v). The in situ XAS spectra illustrate that MTNPs, particularly at 3 wt % doping, effectively enhanced the hole carriers in Ti 3d orbitals with a charge transfer to Mo 4d orbitals and impeded electron-hole pair merging, significantly enhancing the photodegradation under light illumination. This study deepens our understanding of the crucial role of Mo doping in optimizing TiO2 nanoparticle performance for efficient environmental remediation, showcasing the potential of MTNPs as sustainable photocatalytic materials.
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Affiliation(s)
- Chiao-Yu Cheng
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
| | - Yu-Min Shen
- Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 70101, Taiwan
| | - Wei-Hsiang Huang
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
| | - Chun-Chi Chang
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology (NTUST), Taipei 106335, Taiwan
| | - Chang-Chih Tsai
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
| | - Chin-Jung Lin
- Graduate Institute of Environmental Engineering, National Central University, Taoyuan 32001, Taiwan
| | - Yan-Gu Lin
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
| | - Ying-Rui Lu
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
| | - Chung-Li Dong
- Department of Physics, Tamkang University, New Taipei City 251301, Taiwan
| | - Wei-Nien Su
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology (NTUST), Taipei 106335, Taiwan
| | - Shih-Yun Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology (NTUST), Taipei 106335, Taiwan
| | - Krishna Kumar
- Department of General Studies, Physics Division, Jubail Industrial College (JIC), Jubail Industrial City 31961, Saudi Arabia
| | - Han-Yi Chen
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Cho-Jen Tsai
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan
| | - Chi-Liang Chen
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu 300092, Taiwan
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2
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Gao B, Cheng Q, Du X, Ding S, Xiao C, Wang J, Song Z, Jang HW. Identifying the Active Sites in MoSi 2@MoO 3 Heterojunctions for Enhanced Hydrogen Evolution. SMALL METHODS 2024:e2301542. [PMID: 38602282 DOI: 10.1002/smtd.202301542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 04/02/2024] [Indexed: 04/12/2024]
Abstract
Developing Two-dimensional (2D) Mo-based heterogeneous nanomaterials is of great significance for energy conversion, especially in alkaline hydrogen evolution reaction (HER), however, it remains a challenge to identify the active sites at the interface due to the structure complexity. Herein, the real active sites are systematically explored during the HER process in varied Mo-based 2D materials by theoretical computational and magnetron sputtering approaches first to filtrate the candidates, then successfully combined the MoSi2 and MoO3 together through Oxygen doping to construct heterojunctions. Benefiting from the synergistic effects between the MoSi2 and MoO3, the obtained MoSi2@MoO3 exhibits an unprecedented overpotential of 72 mV at a current density of 10 mA cm-2. Density functional theory calculations uncover the different Gibbs free energy of hydrogen adsorption (ΔGH*) values achieved at the interfaces with different sites as adsorption sites. The results can facilitate the optimization of heterojunction electrocatalyst design principles for the Mo-based 2D materials.
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Affiliation(s)
- Bo Gao
- School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao, Shandong, 266525, China
- Key Lab of Industrial Fluid Energy Conservation and Pollution Control (Qingdao University of Technology), Ministry of Education, Qingdao, Shandong, 266525, China
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Qiuping Cheng
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Xiaoye Du
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Shujiang Ding
- Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Department of Applied Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Chunhui Xiao
- Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Department of Applied Chemistry, School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Jin Wang
- School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao, Shandong, 266525, China
| | - Zhongxiao Song
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, Republic of Korea
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3
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Bezerra LS, Belhout SA, Wang S, Quiroz J, de Oliveira PFM, Shetty S, Rocha G, Santos HLS, Frindy S, Oropeza FE, de la Peña O'Shea VA, Kallio AJ, Huotari S, Huo W, Camargo PHC. Triple Play of Band Gap, Interband, and Plasmonic Excitations for Enhanced Catalytic Activity in Pd/H xMoO 3 Nanoparticles in the Visible Region. ACS APPLIED MATERIALS & INTERFACES 2024; 16:11467-11478. [PMID: 38382920 PMCID: PMC11393804 DOI: 10.1021/acsami.3c17101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Plasmonic photocatalysis has been limited by the high cost and scalability of plasmonic materials, such as Ag and Au. By focusing on earth-abundant photocatalyst/plasmonic materials (HxMoO3) and Pd as a catalyst, we addressed these challenges by developing a solventless mechanochemical synthesis of Pd/HxMoO3 and optimizing photocatalytic activities in the visible range. We investigated the effect of HxMoO3 band gap excitation (at 427 nm), Pd interband transitions (at 427 nm), and HxMoO3 localized surface plasmon resonance (LSPR) excitation (at 640 nm) over photocatalytic activities toward the hydrogen evolution and phenylacetylene hydrogenation as model reactions. Although both excitation wavelengths led to comparable photoenhancements, a 110% increase was achieved under dual excitation conditions (427 + 640 nm). This was assigned to a synergistic effect of optical excitations that optimized the generation of energetic electrons at the catalytic sites. These results are important for the development of visible-light photocatalysts based on earth-abundant components.
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Affiliation(s)
- Leticia S Bezerra
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, PO Box 55, Helsinki 00014, Finland
| | - Samir A Belhout
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, PO Box 55, Helsinki 00014, Finland
| | - Shiqi Wang
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, PO Box 55, Helsinki 00014, Finland
| | - Jhon Quiroz
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, PO Box 55, Helsinki 00014, Finland
| | - Paulo F M de Oliveira
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo. Av. Lineu Prestes 748, São Paulo 05508000, Brazil
| | - Shwetha Shetty
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, PO Box 55, Helsinki 00014, Finland
| | - Guilherme Rocha
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, PO Box 55, Helsinki 00014, Finland
| | - Hugo L S Santos
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, PO Box 55, Helsinki 00014, Finland
| | - Sana Frindy
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, PO Box 55, Helsinki 00014, Finland
| | - Freddy E Oropeza
- Photoactivated Processes Unit, IMDEA Energy Institute, Avda. Ramón de la Sagra 3, Mostoles, Madrid 28935, Spain
| | - Víctor A de la Peña O'Shea
- Photoactivated Processes Unit, IMDEA Energy Institute, Avda. Ramón de la Sagra 3, Mostoles, Madrid 28935, Spain
| | - Antti-Jussi Kallio
- Department of Physics, University of Helsinki, P.O. Box 64, Helsinki 00014, Finland
| | - Simo Huotari
- Department of Physics, University of Helsinki, P.O. Box 64, Helsinki 00014, Finland
| | - Wenyi Huo
- College of Mechanical and Electrical Engineering, Nanjing Forestry University, Nanjing 210037, P. R. China
- NOMATEN Centre of Excellence, National Centre for Nuclear Research. Otwock 05-400, Poland
| | - Pedro H C Camargo
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, PO Box 55, Helsinki 00014, Finland
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Chen X, de Boer RM, Kosari A, van Gog H, van Huis MA. Thermal Reduction of MoO 3 Particles and Formation of MoO 2 Nanosheets Monitored by In Situ Transmission Electron Microscopy. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:21387-21398. [PMID: 37937158 PMCID: PMC10626599 DOI: 10.1021/acs.jpcc.3c05159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/20/2023] [Accepted: 10/09/2023] [Indexed: 11/09/2023]
Abstract
Nanoscale forms of molybdenum trioxide have found widespread use in optoelectronic, sensing, and battery applications. Here, we investigate the thermal evolution of micrometer-sized molybdenum trioxide particles during in situ heating in vacuum using transmission electron microscopy and observed drastic structural and chemical changes that are strongly dependent on the heating rate. Rapid heating (flash heating) of MoO3 particles to a temperature of 600 °C resulted in large-scale formation of MoO2(001) nanosheets that were formed in a wide area around the reducing MoO3 particles, within a few minutes of time frame. In contrast, when heated more gently, the initially single-crystal MoO3 particles were reduced into hollow nanostructures with polycrystalline MoO2 shells. Using density functional theory calculations employing the DFT-D3 functional, the surface energy of MoO3(010) was calculated to be 0.187 J m-2, and the activation energy for exfoliation of the van der Waals bonded MoO3 (010) layers was calculated to be 0.478 J m-2. Ab initio molecular dynamics simulations show strong fluctuations in the distance between the (010) layers, where thermal vibrations lead to additional separations of up to 1.8 Å at 600 °C. This study shows efficient pathways for the generation of either MoO2 nanosheets or hollow MoO2 nanostructures with very high effective surface areas beneficial for applications.
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Affiliation(s)
- Xiaodan Chen
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
| | - Roos M. de Boer
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
| | - Ali Kosari
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
- Electron
Microscopy Centre, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Heleen van Gog
- Nanostructured
Materials and Interfaces, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747
AG Groningen, The
Netherlands
| | - Marijn A. van Huis
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
- Electron
Microscopy Centre, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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5
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Hsu FH, Hsu SY, Chen BH, Chen JL, Chen JM, Lu KT. Correlation of the crystal structure and ion storage behavior of MoO 3 electrode materials for aluminum-ion energy storage studied using in situ X-ray spectroscopy. NANOSCALE 2022; 14:7502-7515. [PMID: 35467685 DOI: 10.1039/d2nr00182a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
To characterize the correlation of the crystal structure and Al-ion storage behavior, we prepared various crystal structures of MoO3 (α-MoO3, β-MoO3 and h-MoO3) electrode materials and studied them via in situ X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) techniques. The α-MoO3 electrode material possesses a specific capacitance of 575.4 F g-1 and a gravimetric capacity of 207.8 mA h g-1 at a current density of 1 A g-1. From the in situ XRD results, the crystal structures of α-MoO3 and β-MoO3 show a significant distortion, whereas that of h-MoO3 is minorly affected during the insertion or extraction of Al3+ ions. Based on the in situ XAS results, the MoO6 octahedral structure and Mo ion valence of α-MoO3 and β-MoO3 also exhibit a strong variation, whereas those of h-MoO3 are nearly unchanged during the insertion or extraction of Al3+ ions. Notably, in situ XRD and XAS also clearly show a possible phase of AlxMoO3 during the Al3+ insertion and extraction cycles in the α-MoO3 and β-MoO3 electrode materials, which may play a crucial role in the behavior of the residue of Al3+ ions and poor cycling stability. We provide clear evidence that the Al-ion energy storage performance of various MoO3 electrode materials is strongly associated with the corresponding tunnel space and the stability of their crystal structures. This work also provides new insight into a strong correlation between ion-storage efficiency and the corresponding crystal structure, which is greatly helpful for the development and improvement of new electrode materials for Al-ion energy storage.
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Affiliation(s)
- Feng Hao Hsu
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
| | - Su Yang Hsu
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
| | - Bo Hao Chen
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
| | - Jeng Lung Chen
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
| | - Jin Ming Chen
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
| | - Kueih Tzu Lu
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
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6
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Popov V, Menushenkov A, Yastrebtsev A, Molokova A, Pisarev A, Khramov E, Zubavichus Y, Shchetinin I, Ponkratov K, Tsarenko N, Ognevskaya N. The synthesis and studies of crystal/local structures and morphology of hydrated molybdenum oxides. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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7
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Liu Y, Liu P, Men YL, Li Y, Peng C, Xi S, Pan YX. Incorporating MoO 3 Patches into a Ni Oxyhydroxide Nanosheet Boosts the Electrocatalytic Oxygen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2021; 13:26064-26073. [PMID: 34038083 DOI: 10.1021/acsami.1c05660] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The electrocatalytic oxygen evolution reaction from H2O (OER) is essential in a number of areas like electrocatalytic hydrogen production from H2O. A Ni oxyhydroxide nanosheet (NiNS) is among the most widely studied OER catalysts but still suffers from low activity, sluggish kinetics, and poor stability. Herein, we incorporate MoO3 patches into NiNS to form a nanosheet with an intimate Ni-Mo interface (NiMoNS) for the OER. The overpotential at 10 mA cm-2 and Tafel slope on NiMoNS (260 mV, 54.7 mV dec-1) are lower than those on NiNS (296 mV, 89.3 mV dec-1), implying that higher activity and faster kinetics are achieved on NiMoNS. There is no change in electrocatalytic efficiency of NiMoNS after 18 h of OER, but the electrocatalytic efficiency of NiNS decreases by 56% after only 8 h of OER. Thus, NiMoNS has better stability. The intimate Ni-Mo interface promotes two-dimensional lateral growth of NiMoNS to form a surface area 1.5 times larger than that of NiNS, and facilitates electron transfer from Ni to Mo. This makes the Ni3+/Ni2+ ratio on the NiMoNS surface (1.32) higher than that on the NiNS surface (0.68). Moreover, the Ni3+/Ni2+ ratio on NiMoNS surface increases to 1.81 after 18 h of OER but the Ni3+/Ni2+ ratio on the NiNS surface decreases to 0.51 after 8 h of OER. Therefore, the NiMoNS surface has more abundant and stable Ni3+ sites which are catalytically active toward OER. This could be the reason for the enhanced activity, kinetics, and stability of NiMoNS. The results are very valuable for fabricating more efficient catalysts for electrocatalysis.
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Affiliation(s)
- Yi Liu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Peng Liu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yu-Long Men
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yibao Li
- School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, Jiangxi, China
| | - Chong Peng
- Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian 116045, Liaoning, China
| | - Shibo Xi
- Institute of Chemical and Engineering Sciences, A*STAR, 1 Pesek Road, Jurong Island, 627833 Singapore
| | - Yun-Xiang Pan
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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8
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Choi WH, Kim K, Lee H, Choi JW, Park DG, Kim GH, Choi KM, Kang JK. Metal-Organic Fragments with Adhesive Excipient and Their Utilization to Stabilize Multimetallic Electrocatalysts for High Activity and Robust Durability in Oxygen Evolution Reaction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2100044. [PMID: 34105280 PMCID: PMC8188218 DOI: 10.1002/advs.202100044] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/07/2021] [Indexed: 06/12/2023]
Abstract
Multimetallic electrocatalysts have shown great potential to improve electrocatalytic performance, but their deteriorations in activity and durability are yet to be overcome. Here, metal-organic fragments with adhesive excipient to realize high activity with good durability in oxygen evolution reaction (OER) are developed. First, a leaf-like zeolitic-imidazolate framework (ZIF-L) is synthesized. Then, ionized species in hydrogen plasma attack preferentially the organic linkers of ZIF-L to derive cobalt-imidazole fragments (CIFs) as adhesive excipient, while they are designed to retain the coordinated cobalt nodes. Moreover, the vacant coordination sites at cobalt nodes and the unbound nitrogen at organic linkers induce high porosity and conductivity. The CIFs serve to stably impregnate trimetallic FeNiMo electrocatalysts (CIF:FeNiMo), and CIF:FeNiMo containing Fe contents of 22% and hexavalent Mo contents show to enable high activity with low overpotentials (203 mV at 10 mA cm-2 and 238 mV at 100 mA cm-2 ) in OER. The near O K-edge extended X-ray absorption fine structure proves further that high activity for OER originates from the partially filled eg orbitals. Additionally, CIF:FeNiMo exhibit good durability, as demonstrated by high activity retention during at least 45 days in OER.
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Affiliation(s)
- Won Ho Choi
- Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology (KAIST)291 Daehak‐ro, Yuseong‐guDaejeon34141Republic of Korea
| | - Keon‐Han Kim
- Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology (KAIST)291 Daehak‐ro, Yuseong‐guDaejeon34141Republic of Korea
| | - Heebin Lee
- Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology (KAIST)291 Daehak‐ro, Yuseong‐guDaejeon34141Republic of Korea
| | - Jae Won Choi
- Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology (KAIST)291 Daehak‐ro, Yuseong‐guDaejeon34141Republic of Korea
| | - Dong Gyu Park
- Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology (KAIST)291 Daehak‐ro, Yuseong‐guDaejeon34141Republic of Korea
| | - Gi Hwan Kim
- Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology (KAIST)291 Daehak‐ro, Yuseong‐guDaejeon34141Republic of Korea
| | - Kyung Min Choi
- Department of Chemical and Biological EngineeringSookmyung Women's UniversityCheongpa‐ro 47‐gil 100, Yongsan‐guSeoul04310Republic of Korea
| | - Jeung Ku Kang
- Department of Materials Science and EngineeringKorea Advanced Institute of Science and Technology (KAIST)291 Daehak‐ro, Yuseong‐guDaejeon34141Republic of Korea
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9
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Liu W, Tian Q, Yang J, Zhou Y, Chang H, Cui W, Xu Q. A Two‐dimensional Amorphous Plasmonic Heterostructure of Pd/MoO
3‐x
for Enhanced Photoelectrochemical Water Splitting Performance. Chem Asian J 2021; 16:1253-1257. [DOI: 10.1002/asia.202100239] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/26/2021] [Indexed: 12/14/2022]
Affiliation(s)
- Wei Liu
- College of Materials Science and Engineering Zhengzhou University Zhengzhou 450052 P. R. China
| | - Qingyong Tian
- Henan Institutes of Advanced Technology Zhengzhou University Zhengzhou 450052 P. R. China
| | - Jian Yang
- Henan Institutes of Advanced Technology Zhengzhou University Zhengzhou 450052 P. R. China
| | - Yannan Zhou
- College of Materials Science and Engineering Zhengzhou University Zhengzhou 450052 P. R. China
| | - Hongwei Chang
- College of Materials Science and Engineering Zhengzhou University Zhengzhou 450052 P. R. China
| | - Wenhui Cui
- College of Materials Science and Engineering Zhengzhou University Zhengzhou 450052 P. R. China
| | - Qun Xu
- College of Materials Science and Engineering Zhengzhou University Zhengzhou 450052 P. R. China
- Henan Institutes of Advanced Technology Zhengzhou University Zhengzhou 450052 P. R. China
- Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education Zhengzhou University Zhengzhou 450052 P. R. China
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10
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Angular Dependence of Copper Surface Damage Induced by an Intense Coherent THz Radiation Beam. CONDENSED MATTER 2020. [DOI: 10.3390/condmat5010016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this work, we show the damage induced by an intense coherent terahertz (THz) beam on copper surfaces. The metallic surface was irradiated by multiple picosecond THz pulses generated by the Free Electron Laser (FEL) at the ISIR facility of the Osaka University, reaching an electric field on the sample surface up to ~4 GV/m. No damage occurs at normal incidence, while images and spectroscopic analysis of the surface point out a clear dependence of the damage on the incidence angle, the electric field intensity, and polarization of the pulsed THz radiation. Ab initio analysis shows that the damage at high incidence angles could be related to the increase of the absorbance, i.e., to the increase of the temperature around or above 1000 °C. The experimental approach we introduced with multiple fast irradiations represents a new powerful technique useful to test, in a reproducible way, the damage induced by an intense electric gradient on copper and other metallic surfaces in view of future THz-based compact particle accelerators.
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11
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Abstract
Since their discovery in 1895, the detection of X-rays has had a strong impact and various applications in several fields of science and human life [...]
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