1
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Kim J, Yu Y, Go TW, Gallet JJ, Bournel F, Mun BS, Park JY. Revealing CO 2 dissociation pathways at vicinal copper (997) interfaces. Nat Commun 2023; 14:3273. [PMID: 37280205 DOI: 10.1038/s41467-023-38928-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 05/22/2023] [Indexed: 06/08/2023] Open
Abstract
Size- and shape-tailored copper (Cu) nanocrystals can offer vicinal planes for facile carbon dioxide (CO2) activation. Despite extensive reactivity benchmarks, a correlation between CO2 conversion and morphology structure has not yet been established at vicinal Cu interfaces. Herein, ambient pressure scanning tunneling microscopy reveals step-broken Cu nanocluster evolutions on the Cu(997) surface under 1 mbar CO2(g). The CO2 dissociation reaction produces carbon monoxide (CO) adsorbate and atomic oxygen (O) at Cu step-edges, inducing complicated restructuring of the Cu atoms to compensate for increased surface chemical potential energy at ambient pressure. The CO molecules bound at under-coordinated Cu atoms contribute to the reversible Cu clustering with the pressure gap effect, whereas the dissociated oxygen leads to irreversible Cu faceting geometries. Synchrotron-based ambient pressure X-ray photoelectron spectroscopy identifies the chemical binding energy changes in CO-Cu complexes, which proves the characterized real-space evidence for the step-broken Cu nanoclusters under CO(g) environments. Our in situ surface observations provide a more realistic insight into Cu nanocatalyst designs for efficient CO2 conversion to renewable energy sources during C1 chemical reactions.
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Affiliation(s)
- Jeongjin Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Chemistry Division, Brookhaven National Laboratory, Upton, NY, 11973, US
| | - Youngseok Yu
- Department of Physics and Photon Science, School of Physics and Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
- Center for Advanced X-ray Science, GIST, Gwangju, 61005, Republic of Korea
| | - Tae Won Go
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Jean-Jacques Gallet
- Laboratoire de Chimie Physique-Matière et Rayonnement, CNRS, Sorbonne Université, Paris, 75005, France
- Synchrotron SOLEIL, Saint-Aubin, Gif sur Yvette, 91192, France
| | - Fabrice Bournel
- Laboratoire de Chimie Physique-Matière et Rayonnement, CNRS, Sorbonne Université, Paris, 75005, France
- Synchrotron SOLEIL, Saint-Aubin, Gif sur Yvette, 91192, France
| | - Bongjin Simon Mun
- Department of Physics and Photon Science, School of Physics and Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea.
- Center for Advanced X-ray Science, GIST, Gwangju, 61005, Republic of Korea.
| | - Jeong Young Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
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2
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Zhao Y, Zhang Q, Ma J, Yi R, Gou L, Nie D, Han X, Zhang L, Wang Y, Xu X, Wang Z, Chen L, Lu Y, Zhang S, Zhang L. Directional growth of quasi-2D Cu2O monocrystals on rGO membranes in aqueous environments. iScience 2022; 25:105472. [DOI: 10.1016/j.isci.2022.105472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/19/2022] [Accepted: 10/28/2022] [Indexed: 11/16/2022] Open
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3
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Gupta N, Baraiya BA, Jha PK, Soni HP. Differentiating the {100} surfaces of Cu2O nanocrystals from {111} and {110} for benzylic Csp3-H bond oxidation: Oxidations of diphenyl methane to benzophenone and cumene to cumene hydroperoxide under mild conditions. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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4
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Klein IM, Liu H, Nimlos D, Krotz A, Cushing SK. Ab Initio Prediction of Excited-State and Polaron Effects in Transient XUV Measurements of α-Fe 2O 3. J Am Chem Soc 2022; 144:12834-12841. [PMID: 35816667 DOI: 10.1021/jacs.2c03994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Transient X-ray and extreme ultraviolet (XUV) spectroscopies have become invaluable tools for studying photoexcited dynamics due to their sensitivity to carrier occupations and local chemical or structural changes. One of the most studied materials using transient XUV spectroscopy is α-Fe2O3 because of its rich photoexcited dynamics, including small polaron formation. The interpretation of carrier and polaron effects in α-Fe2O3 is currently carried out using a semi-empirical method that is not transferrable to most materials. Here, an ab initio, Bethe-Salpeter equation (BSE) approach is developed that can incorporate photoexcited-state effects into arbitrary material systems. The accuracy of this approach is proven by calculating the XUV absorption spectra for the ground, photoexcited, and polaron states of α-Fe2O3. Furthermore, the theoretical approach allows for the projection of the core-valence excitons and different components of the X-ray transition Hamiltonian onto the band structure, providing new insights into old measurements. From this information, a physical intuition about the origins and nature of the transient XUV spectra can be built. A route to extracting electron and hole energies is even shown possible for highly angular momentum split XUV peaks. This method is easily generalized to K, L, M, and N edges to provide a general approach for analyzing transient X-ray absorption or reflection data.
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Affiliation(s)
- Isabel M Klein
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Hanzhe Liu
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Danika Nimlos
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Alex Krotz
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Scott Kevin Cushing
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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5
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Schwenker E, Kolluru VSC, Guo J, Zhang R, Hu X, Li Q, Paul JT, Hersam MC, Dravid VP, Klie R, Guest JR, Chan MKY. Ingrained: An Automated Framework for Fusing Atomic-Scale Image Simulations into Experiments. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2102960. [PMID: 35384282 DOI: 10.1002/smll.202102960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 12/20/2021] [Indexed: 06/14/2023]
Abstract
To fully leverage the power of image simulation to corroborate and explain patterns and structures in atomic resolution microscopy, an initial correspondence between the simulation and experimental image must be established at the outset of further high accuracy simulations or calculations. Furthermore, if simulation is to be used in context of highly automated processes or high-throughput optimization, the process of finding this correspondence itself must be automated. In this work, "ingrained," an open-source automation framework which solves for this correspondence and fuses atomic resolution image simulations into the experimental images to which they correspond, is introduced. Herein, the overall "ingrained" workflow, focusing on its application to interface structure approximations, and the development of an experimentally rationalized forward model for scanning tunneling microscopy simulation are described.
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Affiliation(s)
- Eric Schwenker
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, 60439, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Venkata Surya Chaitanya Kolluru
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, 60439, USA
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Jinglong Guo
- Department of Physics, University of Illinois Chicago, Chicago, IL, 60607, USA
| | - Rui Zhang
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Xiaobing Hu
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Qiucheng Li
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Joshua T Paul
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, 60439, USA
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Mark C Hersam
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Vinayak P Dravid
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Robert Klie
- Department of Physics, University of Illinois Chicago, Chicago, IL, 60607, USA
| | - Jeffrey R Guest
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Maria K Y Chan
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL, 60439, USA
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6
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Adsorption and desorption mechanisms on graphene oxide nanosheets: Kinetics and tuning. Innovation (N Y) 2021; 2:100137. [PMID: 34557777 PMCID: PMC8454550 DOI: 10.1016/j.xinn.2021.100137] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 06/15/2021] [Indexed: 02/07/2023] Open
Abstract
A knowledge of the adsorption and desorption behavior of sorbates on surface adsorptive site (SAS) is the key to optimizing the chemical reactivity of catalysts. However, direct identification of the chemical reactivity of SASs is still a challenge due to the limitations of characterization techniques. Here, we present a new pathway to determine the kinetics of adsorption/desorption on SASs of graphene oxide (GO) based on total internal reflectance fluorescence microscopy. The switching on and off of the fluorescent signal of SAS lit by carbon dots (CDs) was used to trace the adsorption process and desorption process. We find that sodium pyrophosphate (PPi) could increase the adsorption equilibrium of CDs thermodynamically and promote the substrate-assisted desorption pathway kinetically. At the single turnover level, it was disclosed that the species that can promote desorption may also be an adsorption promoter. Such discovery provides significant guidance for improving the chemical reactivity of the heterogeneous catalyst. The kinetics of adsorption and desorption process were revealed, respectively, by monitoring a fluorogenic process of carbon dots on the surface of graphene oxides at the single turnover level By regulating the equilibrium of adsorption and desorption, a mechanism for the simultaneous promotion of adsorption and desorption has been discovered A desorption accelerator could play a satisfactory double action, i.e., adsorption promoter on thermodynamics and desorption promoter on kinetics
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7
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Wang X, Pan J, Wei H, Li W, Zhao J, Hu Z. CO 2 activation and dissociation on In 2O 3(110) supported Pd nPt (4-n) ( n = 0-4) catalysts: a density functional theory study. Phys Chem Chem Phys 2021; 23:11557-11567. [PMID: 33978017 DOI: 10.1039/d1cp01015h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Converting CO2 into valuable chemicals via catalytic reactions can mitigate both the greenhouse effect and energy shortage problems, thus designing efficient catalysts have attracted considerable attention over the past decades. In this work, a density functional theory (DFT) calculation was carried out to investigate the CO2 activation and dissociation processes on various PdnPt(4-n)/In2O3 (n = 0-4) catalysts. The PdnPt(4-n)/In2O3 models were initially built, and the interface sites of PdnPt(4-n)/In2O3 for CO2 adsorption were confirmed among cluster sites and substrate sites. The CO2 adsorption geometries, charger transfer, and projected density of states (PDOS) were analyzed to study the CO2-PdnPt(4-n)/In2O3 interactions. From the adsorbed *CO2, the transition states (TSs) for CO2 dissociation to form *CO and *O were gained to reveal the characteristics of the activated CO2δ-. Overall, according to the adsorption energy Eads results, the bimetallic PdPt3/In2O3 and Pd3Pt/In2O3 catalysts showed the strongest and weakest CO2 adsorption stabilities, respectively, while the Pd element addition decreases the barriers for CO2 dissociation with the priority order of Pd4 > Pd3Pt > Pd2Pt2 > PdPt3 > Pt4. The Brønsted-Evans-Polanyi (BEP) relation between activation barriers (Eb) and reaction energies E was obtained for the CO2 dissociation mechanism on PdnPt(4-n)/In2O3 catalysts with the equation of E = 0.20Eb + 0.40. Finally, the optimal Pd2Pt2/In2O3 catalyst for CO2 activation and dissociation was proposed. This study provides useful information for CO2 activation and conversation procedures on bimetal-oxide catalysts, and helps to take the optimal design of PdPt/In2O3 catalysts for the CO2 reaction.
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Affiliation(s)
- Xiaowen Wang
- State Key Laboratory of Engines, Tianjin University, China.
| | - Jiaying Pan
- State Key Laboratory of Engines, Tianjin University, China.
| | - Haiqiao Wei
- State Key Laboratory of Engines, Tianjin University, China.
| | - Wenjia Li
- Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, China
| | - Jun Zhao
- Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, Tianjin University, China
| | - Zhen Hu
- State Key Laboratory of Engines, Tianjin University, China.
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8
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Ding Y, Xu Y, Zhang L. Tin Alloying Enhances Catalytic Selectivity of Copper Surface: A Mechanistic Study Based on First-Principles Calculations. J Phys Chem Lett 2021; 12:3031-3037. [PMID: 33734688 DOI: 10.1021/acs.jpclett.1c00204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The Cu-Sn binary catalysts are found to selectively reduce CO2 to CO electrochemically with promising efficiencies. The issue of active sites is not resolved yet. In this paper, first-principles calculations are performed to study the stability, as well as the hydrogen evolution and the CO2 reduction properties, of the Sn-modified Cu surfaces. It is revealed that a special type of Cu step edges with inner atoms substituted by Sn single atoms can not only keep the CO2 reduction property of a pure Cu edge but also inhibit the H2 formation, while being stable enough under reduction conditions. By analyzing the electronic properties of the edges, we found that the Sn atom among many others can make the most optimized effect in enhancing the catalytic selectivity of the Cu surface.
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Affiliation(s)
- Yanyan Ding
- School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Yangyang Xu
- School of Physics, Nankai University, Tianjin 300071, People's Republic of China
| | - Lixin Zhang
- School of Physics, Nankai University, Tianjin 300071, People's Republic of China
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9
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Role of surface defects in CO2 adsorption and activation on CuFeO2 delafossite oxide. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111181] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Wang Y, Deng S, Liu B, Jin Y. Mechanistic Understanding on the Role of Cu Species over the CuO x /TiO 2 Catalyst for CO 2 Photoreduction. ACS OMEGA 2020; 5:18050-18063. [PMID: 32743179 PMCID: PMC7391363 DOI: 10.1021/acsomega.0c01533] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 07/03/2020] [Indexed: 06/11/2023]
Abstract
Incorporation of earth-abundant Cu is one of the most important approaches to improve the practicability of TiO2 for photoreduction of CO2 into value-added solar fuels. However, the molecular insight on the role of Cu is complicated and far from understood. We performed a first principle calculation on the anatase (101) surface modified by a single Cu atom deposited on the surface (CuS) or doped in the lattice (CuL). It is demonstrated the CuL is clearly more stable than the CuS and could promote the formation of oxygen vacancy (Vo) greatly. The CuS plays a role of donor, while the CuL is electronically deficient and becomes a global electron trapper. If a Vo is introduced, the excess electrons would immigrate to the empty gap state of the CuL and make it half-filled in some case, which implies its metallic characters and improved conductivity; meanwhile, the formation of Ti3+ is suppressed. Judging from the adsorption energies, it is the Vo that primarily improves the adsorption of CO2 in both linear and bent states, and the CuS could hardly stabilize CO2 more, while the promotion effect of Vo could even be counteracted by the CuL due to its electronic deficiency. The reduction pathways (CO2* → CO* + O*) show that, with the assistance of the CuS, linear CO2 could directly transform into the carbonate-like geometry vertically binding to the surface, and the intermediate configuration of the bent CO2 horizontally bridging the Vo could be successfully skipped. Therefore, the barrier of the rate-determining transformation could be lowered from 0.75 to 0.39 eV. Furthermore, it is found the strong adsorption of the produced CO by the CuS might retard the smooth going of the catalytic process.
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Affiliation(s)
- Yujie Wang
- Key Laboratory for Biomaterials
and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510630, People’s Republic of China
| | - Shiheng Deng
- Key Laboratory for Biomaterials
and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510630, People’s Republic of China
| | - Boping Liu
- Key Laboratory for Biomaterials
and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510630, People’s Republic of China
| | - Yulong Jin
- Key Laboratory for Biomaterials
and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou 510630, People’s Republic of China
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11
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Chen TN, Kao JC, Zhong XY, Chan SJ, Patra AS, Lo YC, Huang MH. Facet-Specific Photocatalytic Activity Enhancement of Cu 2O Polyhedra Functionalized with 4-Ethynylanaline Resulting from Band Structure Tuning. ACS CENTRAL SCIENCE 2020; 6:984-994. [PMID: 32607445 PMCID: PMC7318064 DOI: 10.1021/acscentsci.0c00367] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Indexed: 05/16/2023]
Abstract
Cu2O rhombic dodecahedra, octahedra, and cubes were densely modified with conjugated 4-ethynylaniline (4-EA) for facet-dependent photocatalytic activity examination. Infrared spectroscopy affirms bonding of the acetylenic group of 4-EA onto the surface copper atoms. The photocatalytically inactive Cu2O cubes showed surprisingly high activity toward methyl orange photodegradation after 4-EA modification, while the already active Cu2O rhombic dodecahedra and octahedra exhibited a photocatalytic activity enhancement. Electron, hole, and radical scavenger experiments prove that the photocatalytic charge transport processes have occurred in the functionalized Cu2O cubes. Electrochemical impedance spectroscopy also indicates reduced charge transfer resistance of the functionalized Cu2O crystals. A band diagram constructed from UV-vis spectral and Mott-Schottky measurements reveals significant band energy shifts in all Cu2O samples after decorating with 4-EA. From density functional theory (DFT) calculations, a new band has emerged slightly above the valence band maximum within the band gap of Cu2O, which has been found to originate from 4-EA through band-decomposed charge density analysis. The increased charge density localized on the 4-EA molecule and the smallest electron transition energy to reach the 4-EA-generated band are factors making {100}-bound Cu2O cubes photocatalytically active. Proper molecular decoration represents a powerful approach to improving the photocatalytic efficiency of semiconductors.
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Affiliation(s)
- Tzu-Ning Chen
- Department
of Chemistry and Frontier Research Center on Fundamental and Applied
Sciences of Matters, National Tsing Hua
University, Hsinchu 30013, Taiwan
| | - Jui-Cheng Kao
- Department
of Materials Science and Engineering, National
Chiao Tung University, Hsinchu 30010, Taiwan
| | - Xin-Yan Zhong
- Department
of Materials Science and Engineering, National
Chiao Tung University, Hsinchu 30010, Taiwan
| | - Shang-Ju Chan
- Department
of Chemistry and Frontier Research Center on Fundamental and Applied
Sciences of Matters, National Tsing Hua
University, Hsinchu 30013, Taiwan
| | - Anindya S. Patra
- Department
of Chemistry and Frontier Research Center on Fundamental and Applied
Sciences of Matters, National Tsing Hua
University, Hsinchu 30013, Taiwan
| | - Yu-Chieh Lo
- Department
of Materials Science and Engineering, National
Chiao Tung University, Hsinchu 30010, Taiwan
- E-mail:
| | - Michael H. Huang
- Department
of Chemistry and Frontier Research Center on Fundamental and Applied
Sciences of Matters, National Tsing Hua
University, Hsinchu 30013, Taiwan
- E-mail:
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12
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Li K, He Y, Chen P, Wang H, Sheng J, Cui W, Leng G, Chu Y, Wang Z, Dong F. Theoretical design and experimental investigation on highly selective Pd particles decorated C 3N 4 for safe photocatalytic NO purification. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122357. [PMID: 32097850 DOI: 10.1016/j.jhazmat.2020.122357] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 05/27/2023]
Abstract
Rational design of highly active and selective photocatalyst for NO removal is significant for the commercial application of photocatalytic technology because the secondary byproduct caused by insufficient and non-selective pollutant oxidation process is a major challenge. In this work, Pd nanoparticles decorated C3N4 (PdCN) is designed by density functional theory (DFT) at first. The PdCN exhibits superiority to CN in terms of both kinetics and thermodynamics performances, as reflected in the lower activation barrier of rate-determining step and higher selectivity for the final product (nitrate) instead of toxic intermediate (NO2). The as-designed highly selective and efficient photocatalyst is then fabricated by a facile method with an extremely low content of Pd particles supported on C3N4. Compared to bare CN, the synthesized PdCN exhibits highly enhanced purification of NO in air and strong inhibition of toxic NO2 by-product as supported by in-situ DRIFTS investigation, which is consistent with the theoretical prediction. This work is a typical demonstration of setting up a bridge between theory and experiment to give a promising way to the rational design of advanced photocatalysts and atomic understanding of the reaction mechanism.
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Affiliation(s)
- Kanglu Li
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China; College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Ye He
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Peng Chen
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China; The Center of New Energy Materials and Technology, School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Hong Wang
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jianping Sheng
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Wen Cui
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China; The Center of New Energy Materials and Technology, School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, China
| | - Geng Leng
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Yinghao Chu
- College of Architecture and Environment, Sichuan University, Chengdu 610065, China
| | - Zhiming Wang
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Fan Dong
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
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13
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de Brito JF, Genovese C, Tavella F, Ampelli C, Boldrin Zanoni MV, Centi G, Perathoner S. CO 2 Reduction of Hybrid Cu 2 O-Cu/Gas Diffusion Layer Electrodes and their Integration in a Cu-based Photoelectrocatalytic Cell. CHEMSUSCHEM 2019; 12:4274-4284. [PMID: 31361396 DOI: 10.1002/cssc.201901352] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/18/2019] [Indexed: 05/13/2023]
Abstract
Cu2 O/gas diffusion layer (GDL) electrodes prepared by electrodeposition were studied for the electrocatalytic reduction of CO2 . The designed electrode was also tested in solar-light-induced CO2 conversion in combination with a CuO/NtTiO2 photoanode using a compact photoelectrocatalytic (PEC) cell. Both PEC cell electrodes were prepared using non-critical raw materials and low cost, easily scalable procedures. In the PEC experiments, a total carbon faradaic selectivity of about 90 % to formate and about 75 % to acetate was obtained after 24 h of operations without application of potential/current or using sacrificial agents. In electrocatalytic tests of CO2 reduction at -1.5 V, the same electrode yielded high total faradaic selectivity (>95 %) but formed selectively formate (about 80 % selectivity) rather than acetate. The in situ transformation of the Cu2 O/GDL electrode leads to the formation of a hybrid Cu2 O-Cu/GDL system. Cyclic voltammetry data indicate that the potential and the presence of CO2 (not only of HCO3 - species) are both important elements in this transformation. Data also indicate that the surface concentration of CO2 (or of its products of transformation) on the electrode is an important factor to determine performance in the conversion of CO2 .
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Affiliation(s)
- Juliana Ferreira de Brito
- University of Messina, ERIC aisbl and CASPE/INSTM, Departments ChiBioFarAm and MIFT, viale F. Stagno d'Alcontres 31, 98166, Messina, Italy
- Institute of Chemistry-Araraquara, Universidade Estadual Paulista (UNESP), Rua Francisco Degni, 55, Bairro Quitandinha, 14800-900, Araraquara, SP, Brazil
| | - Chiara Genovese
- University of Messina, ERIC aisbl and CASPE/INSTM, Departments ChiBioFarAm and MIFT, viale F. Stagno d'Alcontres 31, 98166, Messina, Italy
| | - Francesco Tavella
- University of Messina, ERIC aisbl and CASPE/INSTM, Departments ChiBioFarAm and MIFT, viale F. Stagno d'Alcontres 31, 98166, Messina, Italy
| | - Claudio Ampelli
- University of Messina, ERIC aisbl and CASPE/INSTM, Departments ChiBioFarAm and MIFT, viale F. Stagno d'Alcontres 31, 98166, Messina, Italy
| | - Maria Valnice Boldrin Zanoni
- Institute of Chemistry-Araraquara, Universidade Estadual Paulista (UNESP), Rua Francisco Degni, 55, Bairro Quitandinha, 14800-900, Araraquara, SP, Brazil
| | - Gabriele Centi
- University of Messina, ERIC aisbl and CASPE/INSTM, Departments ChiBioFarAm and MIFT, viale F. Stagno d'Alcontres 31, 98166, Messina, Italy
| | - Siglinda Perathoner
- University of Messina, ERIC aisbl and CASPE/INSTM, Departments ChiBioFarAm and MIFT, viale F. Stagno d'Alcontres 31, 98166, Messina, Italy
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14
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Si D, Song X, Zhang H, Shi Y, Hao C. Exploration of the basic reactant in CO2 photoreduction: New insights from photophysics and photochemistry. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Niu T, Zhou W, Zhou D, Hu X, Zhang S, Zhang K, Zhou M, Fuchs H, Zeng H. Modulating Epitaxial Atomic Structure of Antimonene through Interface Design. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1902606. [PMID: 31157463 DOI: 10.1002/adma.201902606] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Indexed: 06/09/2023]
Abstract
Antimonene, a new semiconductor with fundamental bandgap and desirable stability, has been experimentally realized recently. However, epitaxial growth of wafer-scale single-crystalline monolayer antimonene preserving its buckled configuration remains a daunting challenge. Here, Cu(111) and Cu(110) are chosen as the substrates to fabricate high-quality, single-crystalline antimonene via molecular beam epitaxy (MBE). Surface alloys form spontaneously after the deposition and postannealing of Sb on two substrates that show threefold and twofold symmetry with different lattice constants. Increasing the coverage leads to the epitaxial growth of two atomic types of antimonene, both exhibiting a hexagonal lattice but with significant difference in lattice constants, which are observed by scanning tunneling microscopy. Scanning tunneling spectroscopy measurements reveal the strain-induced tunable bandgap, in agreement with the first-principles calculations. The results show that epitaxial growth of antimonene on different substrates allow the electronic properties of these films to be tuned by substrate-induced strain and stress.
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Affiliation(s)
- Tianchao Niu
- College of Material Science and Engineering, Nanjing University of Science & Technology, No. 200, Xiaolingwei, 210094, China
- Herbert Gleiter Institute of Nanoscience, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Wenhan Zhou
- College of Material Science and Engineering, Nanjing University of Science & Technology, No. 200, Xiaolingwei, 210094, China
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, College of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Dechun Zhou
- College of Material Science and Engineering, Nanjing University of Science & Technology, No. 200, Xiaolingwei, 210094, China
- Herbert Gleiter Institute of Nanoscience, Nanjing University of Science & Technology, Nanjing, 210094, China
| | - Xuemin Hu
- College of Material Science and Engineering, Nanjing University of Science & Technology, No. 200, Xiaolingwei, 210094, China
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, College of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Shengli Zhang
- College of Material Science and Engineering, Nanjing University of Science & Technology, No. 200, Xiaolingwei, 210094, China
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, College of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Kan Zhang
- College of Material Science and Engineering, Nanjing University of Science & Technology, No. 200, Xiaolingwei, 210094, China
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, College of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Miao Zhou
- School of Physics, Beihang University, Beijing, 100191, China
| | - Harald Fuchs
- College of Material Science and Engineering, Nanjing University of Science & Technology, No. 200, Xiaolingwei, 210094, China
- Herbert Gleiter Institute of Nanoscience, Nanjing University of Science & Technology, Nanjing, 210094, China
- Center for Nanotechnology (CeNTech), Westfälische Wilhelms-Universität Münster, Heisenbergstrasse 11, 48149, Münster, Germany
| | - Haibo Zeng
- College of Material Science and Engineering, Nanjing University of Science & Technology, No. 200, Xiaolingwei, 210094, China
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, College of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
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16
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Li L, Lee E, Freeland JW, Fister TT, Thackeray MM, Chan MKY. Identifying the Chemical Origin of Oxygen Redox Activity in Li-Rich Anti-Fluorite Lithium Iron Oxide by Experimental and Theoretical X-ray Absorption Spectroscopy. J Phys Chem Lett 2019; 10:806-812. [PMID: 30615467 DOI: 10.1021/acs.jpclett.8b03271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Harnessing oxygen redox reactions is an intriguing route to increasing capacity in Li-ion batteries (LIBs). Despite numerous experimental and theoretical attempts to unravel the mechanism of oxygen redox behavior, the electronic origin of oxygen activities in energy storage of Li-rich LIB materials remains under intense debate. In this work, the onset of oxygen activity was examined using a Li-rich material that has been reported to exhibit oxygen redox, namely, Li5FeO4. By comparing experimental measurements and first-principles Bethe-Salpeter equation calculations of oxygen K-edge X-ray absorption spectra (XAS), it was found that experimentally-observed changes in XAS originate from the nonbonding oxygen states in cation-disordered delithiated Li5FeO4, and the spectral features of oxygen dimers were also determined. This combined experimental and theoretical study offers an effective approach to disentangle the intertwined signals in XAS and can be further utilized in broader contexts for characterizing other energy storage and conversion materials.
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17
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Zhang R, Liu X, Zhou T, Zhang T. Controllable construction of multishelled p-type cuprous oxide with enhanced formaldehyde sensing. J Colloid Interface Sci 2019; 535:58-65. [DOI: 10.1016/j.jcis.2018.09.081] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/22/2018] [Accepted: 09/24/2018] [Indexed: 01/06/2023]
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18
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Ojha N, Bajpai A, Kumar S. Visible light-driven enhanced CO2 reduction by water over Cu modified S-doped g-C3N4. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01185d] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We synthesized Cu modified S-doped g-C3N4 thin sheets using calcination followed by a wet-impregnation method. The photocatalytic activity was studied for reduction of CO2 to CO and CH4 in the presence of water and a plausible mechanism is explained.
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Affiliation(s)
- Niwesh Ojha
- Gas-Solid Interaction Laboratory
- Department of Chemical and Biochemical Engineering
- Indian Institute of Technology Patna
- Patna
- India
| | - Abhinav Bajpai
- Gas-Solid Interaction Laboratory
- Department of Chemical and Biochemical Engineering
- Indian Institute of Technology Patna
- Patna
- India
| | - Sushant Kumar
- Gas-Solid Interaction Laboratory
- Department of Chemical and Biochemical Engineering
- Indian Institute of Technology Patna
- Patna
- India
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19
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Liu Z, Deng H, Zhang S, Hu W, Gao F. Theoretical prediction of LiScO2 nanosheets as a cathode material for Li–O2 batteries. Phys Chem Chem Phys 2018; 20:22351-22358. [DOI: 10.1039/c8cp01756e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The electrochemical reaction producing crystalline LiO2 on the LiScO2 nanosheet can deliver a high discharge voltage of 3.50 V.
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Affiliation(s)
- Zhixiao Liu
- College of Materials Science and Engineering
- Hunan University
- Changsha 410082
- China
| | - Huiqiu Deng
- School of Physics and Electronics
- Hunan University
- Changsha 410082
- China
- College of Materials Science and Engineering
| | - Shiguo Zhang
- College of Materials Science and Engineering
- Hunan University
- Changsha 410082
- China
| | - Wangyu Hu
- College of Materials Science and Engineering
- Hunan University
- Changsha 410082
- China
| | - Fei Gao
- College of Materials Science and Engineering
- Hunan University
- Changsha 410082
- China
- Department of Nuclear Engineering and Radiological Science
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20
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Zhang R, Li L, Frazer L, Chang KB, Poeppelmeier KR, Chan MKY, Guest JR. Atomistic determination of the surface structure of Cu2O(111): experiment and theory. Phys Chem Chem Phys 2018; 20:27456-27463. [DOI: 10.1039/c8cp06023a] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Atomic-scale defects on the surface of Cu2O(111) are characterized through UHV STM measurements, DFT calculations and STM simulations.
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Affiliation(s)
- Rui Zhang
- Center for Nanoscale Materials
- Argonne National Laboratory
- Argonne
- USA
| | - Liang Li
- Center for Nanoscale Materials
- Argonne National Laboratory
- Argonne
- USA
| | - Laszlo Frazer
- Centre of Excellence in Exciton Science
- UNSW
- Sydney
- Australia
- Monash University
| | | | - Kenneth R. Poeppelmeier
- Department of Chemistry
- Northwestern University
- Evanston
- USA
- Chemical Sciences and Engineering Division
| | - Maria K. Y. Chan
- Center for Nanoscale Materials
- Argonne National Laboratory
- Argonne
- USA
| | - Jeffrey R. Guest
- Center for Nanoscale Materials
- Argonne National Laboratory
- Argonne
- USA
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