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Kojčinović J, Tatar D, Šarić S, Bartus Pravda C, Mavrič A, Arčon I, Jagličić Z, Mellin M, Einert M, Altomare A, Caliandro R, Kukovecz Á, Hofmann JP, Djerdj I. Resolving a structural issue in cerium-nickel-based oxide: a single compound or a two-phase system? Dalton Trans 2024; 53:2082-2097. [PMID: 38180044 DOI: 10.1039/d3dt03280a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
CeNiO3 has been reported in the literature in the last few years as a novel LnNiO3 compound with promising applications in different catalytic fields, but its structure has not been correctly reported so far. In this research, CeNiO3 (RB1), CeO2 and NiO have been synthesized in a nanocrystalline form using a modified citrate aqueous sol-gel route. A direct comparison between the equimolar physical mixture (n(CeO2) : n(NiO) = 1 : 1) and compound RB1 was made. Their structural differences were investigated by laboratory powder X-ray diffraction (PXRD), selected area electron diffraction (SAED), transmission electron microscopy (TEM) with an energy-dispersive X-ray spectroscopy (EDS) detector, and Raman spectroscopy. The surface of the compounds was analyzed by X-ray photoelectron spectroscopy (XPS), while the thermal behaviour was explored by thermogravimetric analysis (TGA). Their magnetic properties were also investigated with the aim of exploring the differences between these two compounds. There were clear differences between the physical mixture of CeO2 + NiO and RB1 presented by all of these employed methods. Synchrotron methods, such as atomic pair distribution function analysis (PDF), X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS), were used to explore the structure of RB1 in more detail. Three different models for the structural solution of RB1 were proposed. One structural solution proposes that RB1 is a single-phase pyrochlore compound (Ce2Ni2O7) while the other two solutions suggest that RB1 is a two-phase system of either CeO2 + NiO or Ce1-xNixO2 and NiO.
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Affiliation(s)
- Jelena Kojčinović
- Department of Chemistry, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia.
| | - Dalibor Tatar
- Department of Chemistry, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia.
| | - Stjepan Šarić
- Department of Chemistry, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia.
| | - Cora Bartus Pravda
- Department of Applied and Environmental Chemistry, University of Szeged, 6720 Szeged, Hungary
| | - Andraž Mavrič
- University of Nova Gorica, Vipavska 13, 5000 Nova Gorica, Slovenia
| | - Iztok Arčon
- University of Nova Gorica, Vipavska 13, 5000 Nova Gorica, Slovenia
- Institute Jožef Stefan, Jamova 39, 1000 Ljubljana, Slovenia
| | - Zvonko Jagličić
- Institute of Mathematics, Physics, and Mechanics, University of Ljubljana, Jamova 2, 1000 Ljubljana, Slovenia
- Faculty of Civil & Geodetic Engineering, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia
| | - Maximilian Mellin
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, 64287 Darmstadt, Germany
| | - Marcus Einert
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, 64287 Darmstadt, Germany
| | - Angela Altomare
- Institute of Crystallography, CNR, via Amendola 122/o, Bari 70126, Italy
| | - Rocco Caliandro
- Institute of Crystallography, CNR, via Amendola 122/o, Bari 70126, Italy
| | - Ákos Kukovecz
- Department of Applied and Environmental Chemistry, University of Szeged, 6720 Szeged, Hungary
| | - Jan Philipp Hofmann
- Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Strasse 3, 64287 Darmstadt, Germany
| | - Igor Djerdj
- Department of Chemistry, Josip Juraj Strossmayer University of Osijek, Cara Hadrijana 8/A, 31000 Osijek, Croatia.
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Cao X, Han YF, Peng C, Zhu M. A Review on the Water‐Gas Shift Reaction over Nickel‐Based Catalysts. ChemCatChem 2022. [DOI: 10.1002/cctc.202200190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xinyu Cao
- East China University of Science and Technology School of Chemical Engineering CHINA
| | - Yi-Fan Han
- East China University of Science and Technology School of Chemical Engineering CHINA
| | - Chong Peng
- Sinopec: China Petrochemical Corporation School of Chemical Engineering CHINA
| | - Minghui Zhu
- East China University of Science and Technology Department of Chemical Engineering 130 Meilong Road 200237 Shanghai CHINA
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3
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Cooperative effect between copper species and oxygen vacancy in Ce0.7−xZrxCu0.3O2 catalysts for carbon monoxide oxidation. Front Chem Sci Eng 2021. [DOI: 10.1007/s11705-021-2106-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Preparation, characterization and catalytic performance of ordered macroporous-mesoporous SiO2-supported MnMOx catalysts for soot combustion. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.07.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Kowalik P, Bicki R, Antoniak‐Jurak K, Michalska K, Próchniak W, Mrozek A. Quaternary Fe‐Cu‐Cr‐Al HT‐WGS Catalysts – Effect of Al Substitution on the Efficiency at Steam‐Lean Process Gas. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000491] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Paweł Kowalik
- Łukasiewicz Research Network – New Chemical Syntheses Institute al. Tysiąclecia Państwa Polskiego 13a 24‐100 Puławy Poland
| | - Robert Bicki
- Łukasiewicz Research Network – New Chemical Syntheses Institute al. Tysiąclecia Państwa Polskiego 13a 24‐100 Puławy Poland
| | - Katarzyna Antoniak‐Jurak
- Łukasiewicz Research Network – New Chemical Syntheses Institute al. Tysiąclecia Państwa Polskiego 13a 24‐100 Puławy Poland
| | - Kamila Michalska
- Łukasiewicz Research Network – New Chemical Syntheses Institute al. Tysiąclecia Państwa Polskiego 13a 24‐100 Puławy Poland
| | - Wiesław Próchniak
- Łukasiewicz Research Network – New Chemical Syntheses Institute al. Tysiąclecia Państwa Polskiego 13a 24‐100 Puławy Poland
| | - Anna Mrozek
- Łukasiewicz Research Network – New Chemical Syntheses Institute al. Tysiąclecia Państwa Polskiego 13a 24‐100 Puławy Poland
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Chiang HL, Chen YS, Sun YA, Wong DSH, Tsai DH. Aerosol Spray Controlled Synthesis of Nanocatalyst using Differential Mobility Analysis Coupled to Fourier-Transform Infrared Spectroscopy. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00685] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hsin-Li Chiang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013 Republic of China
| | - Yu-Shen Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013 Republic of China
| | - Yu-An Sun
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013 Republic of China
| | - David Shan-Hill Wong
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013 Republic of China
| | - De-Hao Tsai
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013 Republic of China
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Wang HL, Hsu CY, Wu KC, Lin YF, Tsai DH. Functional nanostructured materials: Aerosol, aerogel, and de novo synthesis to emerging energy and environmental applications. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.09.039] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Dong CD, Huang CP, Nguyen TB, Hsiung CF, Wu CH, Lin YL, Chen CW, Hung CM. The degradation of phthalate esters in marine sediments by persulfate over iron-cerium oxide catalyst. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 696:133973. [PMID: 31454601 DOI: 10.1016/j.scitotenv.2019.133973] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 08/14/2019] [Accepted: 08/17/2019] [Indexed: 06/10/2023]
Abstract
This study investigated the degradation of phthalate esters (PAEs) in marine sediments by sodium persulfate (Na2S2O8, PS) activated by a series of iron-cerium (Fe-Ce) bimetallic catalysts (FCBCs). The surface structure and chemistry of the FCBCs were characterized by TEM, HRTEM, XRD, FTIR, BET and XPS. Results show successful synthesis of FCBC catalysts. Factors such as PS concentration, Fe to Ce molar ratio, catalyst dosage, and initial pH that might affect PAEs degradation were investigated. Results revealed that PAEs was degraded more effectively over FCBC with a Fe-Ce molar ratio of 1.5:1. Increase in Ce improved the catalytic activity of FCBC due to increase in oxygen storage capacity (OSC). Acidic conditions enhanced PAEs degradation with a maximum degradation of 86% at pH 2 and rate constant (kobs) of 1.5 × 10-1 h-1 when the PS and FCBC concentrations were to 1.0 × 10-5 M and 1.67 g/L, respectively. Di-(2-ethylhexyl) phthalate (DEHP) was a salient marker of PAE contamination in sediments. Dimethyl phthalate (DMP) and diethyl phthalate (DEP) were easier to degrade than DEHP, diisononyl phthalate (DINP), dioctyl phthalate (DnOP) and diisononyl phthalate (DIDP). The synergistic catalytic effect of Fe3+/Fe2+ and Ce4+/Ce3+ redox couples, in addition to electron transfer of oxygen vacancies, activated S2O82- to generate SO4- and HO radicals, which played the major role of PAEs degradation. 5,5-dimethyl-1-pyrroline N-oxide (DMPO) spin trapping EPR studies verified the crucial role of SO4- and HO in the oxidative degradation process. FCBC/PS oxidation exhibited high-performance for the remediation of PAEs-contaminated marine sediments.
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Affiliation(s)
- Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - C P Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark, USA
| | - Thanh-Binh Nguyen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Ching-Feng Hsiung
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chung-Hsin Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Yi-Li Lin
- Department of Safety, Health and Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
| | - Chang-Mao Hung
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
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Chang HY, Lai GH, Tsai DH. Aerosol route synthesis of Ni-CeO2-Al2O3 hybrid nanoparticle cluster for catalysis of reductive amination of polypropylene glycol. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.07.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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10
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Jampaiah D, Damma D, Chalkidis A, Singh M, Sabri YM, Mayes ELH, Bansal V, Bhargava SK. MOF-derived noble-metal-free Cu/CeO2 with high porosity for the efficient water–gas shift reaction at low temperatures. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01114e] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal organic framework templated Cu/CeO2 catalyst exhibited enhanced catalytic performance for the water–gas shift reaction at low temperatures.
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Affiliation(s)
- Deshetti Jampaiah
- Centre for Advanced Materials and Industrial Chemistry (CAMIC)
- School of Science
- RMIT University
- Melbourne
- Australia
| | - Devaiah Damma
- Chemical Engineering
- College of Engineering and Applied Science
- University of Cincinnati
- Cincinnati
- USA
| | - Anastasios Chalkidis
- Centre for Advanced Materials and Industrial Chemistry (CAMIC)
- School of Science
- RMIT University
- Melbourne
- Australia
| | - Mandeep Singh
- Ian Potter NanoBioSensing Facility
- NanoBiotechnology Research Laboratory
- School of Science
- RMIT University
- Melbourne
| | - Ylias M. Sabri
- Centre for Advanced Materials and Industrial Chemistry (CAMIC)
- School of Science
- RMIT University
- Melbourne
- Australia
| | - Edwin L. H. Mayes
- RMIT Microscopy and Microanalysis Facility
- School of Science
- RMIT University
- Melbourne
- Australia
| | - Vipul Bansal
- Ian Potter NanoBioSensing Facility
- NanoBiotechnology Research Laboratory
- School of Science
- RMIT University
- Melbourne
| | - Suresh K. Bhargava
- Centre for Advanced Materials and Industrial Chemistry (CAMIC)
- School of Science
- RMIT University
- Melbourne
- Australia
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11
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Mechanistic understanding of surface reduction of Cu Ce O hybrid nanoparticles for catalytic methane combustion. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.01.049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Tan Q, Shi Z, Wu D. CO2 Hydrogenation to Methanol over a Highly Active Cu–Ni/CeO2–Nanotube Catalyst. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b01246] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qingqing Tan
- School of Chemistry and Chemical Engineering, Southeast University, Jiangning District, Nanjing 211189, China
| | - Zhisheng Shi
- School of Chemistry and Chemical Engineering, Southeast University, Jiangning District, Nanjing 211189, China
| | - Dongfang Wu
- School of Chemistry and Chemical Engineering, Southeast University, Jiangning District, Nanjing 211189, China
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13
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Mixed oxides supported low-nickel formulations for the direct amination of aliphatic alcohols with ammonia. J Catal 2017. [DOI: 10.1016/j.jcat.2017.08.015] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Shim JO, Hong YJ, Na HS, Jang WJ, Kang YC, Roh HS. Highly Active and Stable Pt-Loaded Ce0.75Zr0.25O2 Yolk-Shell Catalyst for Water-Gas Shift Reaction. ACS APPLIED MATERIALS & INTERFACES 2016; 8:17239-17244. [PMID: 27315135 DOI: 10.1021/acsami.6b03915] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Multishelled, Pt-loaded Ce0.75Zr0.25O2 yolk-shell microspheres were prepared by a simple spray pyrolysis process for use in the water-gas shift (WGS) reaction. The Pt-loading was optimized, obtaining highly active Pt/Ce0.75Zr0.25O2 yolk-shell nanostructures for the WGS. Of the prepared catalysts, a 2% Pt loading of the Ce0.75Zr0.25O2 yolk-shell microspheres showed the highest CO conversion. The high catalytic activity of the 2% Pt/Ce0.75Zr0.2O2 catalyst was mainly due to its easier reducibility and the maintenance of active catalytic Pt species. The Pt-loaded Ce0.75Zr0.25O2 catalyst microspheres were highly resistant to Pt sintering because of their unique yolk-shell structure. Spray pyrolysis was found to be highly efficient for the production of precious-metal-loaded, multicomponent metal oxide yolk-shell microspheres for catalytic applications.
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Affiliation(s)
- Jae-Oh Shim
- Department of Environmental Engineering, Yonsei University , 1 Yonseidae-gil, Wonju, Gangwon 220-710, Republic of Korea
| | - Young Jun Hong
- Department of Materials Science and Engineering, Korea University , Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea
| | - Hyun-Suk Na
- Department of Environmental Engineering, Yonsei University , 1 Yonseidae-gil, Wonju, Gangwon 220-710, Republic of Korea
| | - Won-Jun Jang
- Department of Environmental Engineering, Yonsei University , 1 Yonseidae-gil, Wonju, Gangwon 220-710, Republic of Korea
| | - Yun Chan Kang
- Department of Materials Science and Engineering, Korea University , Anam-Dong, Seongbuk-Gu, Seoul 136-713, Republic of Korea
| | - Hyun-Seog Roh
- Department of Environmental Engineering, Yonsei University , 1 Yonseidae-gil, Wonju, Gangwon 220-710, Republic of Korea
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Synthesis of Mixed Cu/Ce Oxide Nanoparticles by the Oil-in-Water Microemulsion Reaction Method. MATERIALS 2016; 9:ma9060480. [PMID: 28773602 PMCID: PMC5456763 DOI: 10.3390/ma9060480] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 06/06/2016] [Accepted: 06/10/2016] [Indexed: 11/17/2022]
Abstract
Cerium oxide and mixed Cu/Ce oxide nanoparticles were prepared by the oil-in-water (O/W) microemulsion reaction method in mild conditions. The Cu/Ce molar ratio was varied between 0/100 and 50/50. According to X-ray diffraction (XRD), below 30/70 Cu/Ce molar ratio, the materials presented a single phase consistent with cubic fluorite CeO₂. However, above Cu/Ce molar ratio 30/70, an excess monoclinic CuO phase in coexistence with the predominant Cu/Ce mixed oxide was detected by XRD and High-Resolution Transmission Electron Microscopy (HRTEM). Raman spectroscopy showed that oxygen vacancies increased significantly as the Cu content was increased. Band gap (Eg) was investigated as a function of the Cu/Ce molar ratio, resulting in values from 2.91 eV for CeO₂ to 2.32 eV for the mixed oxide with 30/70 Cu/Ce molar ratio. These results indicate that below 30/70 Cu/Ce molar ratio, Cu2+ is at least partially incorporated into the ceria lattice and very well dispersed in general. In addition, the photodegradation of Indigo Carmine dye under visible light irradiation was explored for selected samples; it was shown that these materials can remove such contaminants, either by adsorption and/or photodegradation. The results obtained will encourage investigation into the optical and photocatalytic properties of these mixed oxides, for widening their potential applications.
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Pulse Studies to Decipher the Role of Surface Morphology in CuO/CeO2 Nanocatalysts for the Water Gas Shift Reaction. Catal Letters 2015. [DOI: 10.1007/s10562-015-1482-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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17
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Zou W, Ge C, Lu M, Wu S, Wang Y, Sun J, Pu Y, Tang C, Gao F, Dong L. Engineering the NiO/CeO2 interface to enhance the catalytic performance for CO oxidation. RSC Adv 2015. [DOI: 10.1039/c5ra20466f] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this work, NiO/CeO2 catalysts were synthesized with tunable CeO2 crystal facets ({110}, {111} and {100} facets) to study the crystal-plane effects on the catalytic properties.
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18
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Qiu N, Zhang J, Wu Z. Peculiar surface–interface properties of nanocrystalline ceria–cobalt oxides with enhanced oxygen storage capacity. Phys Chem Chem Phys 2014; 16:22659-64. [DOI: 10.1039/c4cp03390f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Seo J, Lee JW, Moon J, Sigmund W, Paik U. Role of the surface chemistry of ceria surfaces on silicate adsorption. ACS APPLIED MATERIALS & INTERFACES 2014; 6:7388-7394. [PMID: 24734880 DOI: 10.1021/am500816y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Ceria nanoparticles (NPs) have been widely explored as a promising material in various fields. As synthesized under various physicochemical conditions, it exhibits the different surface chemistry. Here, the role of hydroxyl and nitrate group on ceria surface, formed under various physicochemical conditions, for the silicate adsorption was experimentally and theoretically investigated based on the adsorption isotherms and theoretical analyses using density functional theory (DFT) calculation. Experimental results acquired from adsorption isotherms with Freundlich model indicated that the nitrate group shows a much higher affinity with silicate than the hydroxyl groups. These phenomena were demonstrated through the theoretical approaches that exhibit the binding energy of the NO3-ceria (-4.383 eV) on the SiO2 surface being much higher than that of the OH-ceria (-3.813 eV). In good agreement with the experimental and the theoretical results based on adsorption properties, the results of chemical mechanical planarization (CMP) also show that the nitrate groups significantly enhance the removal of SiO2 than the hydroxyl groups. The results investigated in this study will provide researchers, studying the ceria NPs, with guidelines on the importance of exploring the surface chemistry of ceria.
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Affiliation(s)
- Jihoon Seo
- Department of Energy Engineering, Hanyang University , Seoul 133-791, South Korea
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Saw E, Oemar U, Tan X, Du Y, Borgna A, Hidajat K, Kawi S. Bimetallic Ni–Cu catalyst supported on CeO2 for high-temperature water–gas shift reaction: Methane suppression via enhanced CO adsorption. J Catal 2014. [DOI: 10.1016/j.jcat.2014.03.015] [Citation(s) in RCA: 230] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Al-Hmoud L, Jones CW. Reaction pathways over copper and cerium oxide catalysts for direct synthesis of imines from amines under aerobic conditions. J Catal 2013. [DOI: 10.1016/j.jcat.2013.01.027] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Mahammadunnisa S, Manoj Kumar Reddy P, Lingaiah N, Subrahmanyam C. NiO/Ce1−xNixO2−δas an alternative to noble metal catalysts for CO oxidation. Catal Sci Technol 2013. [DOI: 10.1039/c2cy20641b] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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