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Materna Mikmeková E, Materna J, Konvalina I, Mikmeková Š, Müllerová I, Asefa T. A soft touch with electron beams: Digging out structural information of nanomaterials with advanced scanning low energy electron microscopy coupled with deep learning. Ultramicroscopy 2024; 262:113965. [PMID: 38640578 DOI: 10.1016/j.ultramic.2024.113965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/04/2024] [Accepted: 04/09/2024] [Indexed: 04/21/2024]
Abstract
Nanostructured materials continue to find applications in various electronic and sensing devices, chromatography, separations, drug delivery, renewable energy, and catalysis. While major advancements on the synthesis and characterization of these materials have already been made, getting information about their structures at sub-nanometer resolution remains challenging. It is also unfortunate to find that many emerging or already available powerful analytical methods take time to be fully adopted for characterization of various nanomaterials. The scanning low energy electron microscopy (SLEEM) is a good example to this. In this report, we show how clearer structural and surface information at nanoscale can be obtained by SLEEM, coupled with deep learning. The method is demonstrated using Au nanoparticles-loaded mesoporous silica as a model system. Moreover, unlike conventional scanning electron microscopy (SEM), SLEEM does not require the samples to be coated with conductive films for analysis; thus, not only it is convenient to use but it also does not give artifacts. The results further reveal that SLEEM and deep learning can serve as great tools to analyze materials at nanoscale well. The biggest advantage of the presented method is its availability, as most modern SEMs are able to operate at low energies and deep learning methods are already being widely used in many fields.
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Affiliation(s)
- Eliška Materna Mikmeková
- Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 612 64 Brno, Czech Republic
| | - Jiří Materna
- Machine Learning College, s.r.o., Chrlická 787/56, 620 00 Brno, Czech Republic
| | - Ivo Konvalina
- Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 612 64 Brno, Czech Republic.
| | - Šárka Mikmeková
- Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 612 64 Brno, Czech Republic
| | - Ilona Müllerová
- Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 612 64 Brno, Czech Republic
| | - Tewodros Asefa
- Department of Chemistry & Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854, USA; Department of Chemical & Biochemical Engineering, Rutgers, The State University of New, Jersey 98 Brett Road, Piscataway, New Jersey 08854, USA
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2
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Carbon dots-incorporated CuSeO3 rationally regulates activity and selectivity of the hydrogen species via light-converted electrons. CHINESE CHEM LETT 2023. [DOI: 10.1016/j.cclet.2023.108225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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3
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Zhao J, Wang J, Brock AJ, Zhu H. Plasmonic heterogeneous catalysis for organic transformations. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C: PHOTOCHEMISTRY REVIEWS 2022. [DOI: 10.1016/j.jphotochemrev.2022.100539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Chen L, Arellano U, Wang J, Balcázar L, Sotelo R, Solis S, Azomosa M, González J, González Vargas O, Song Y, Liu J, Zhou X. Oxygen defect, electron transfer and photocatalytic activity of Ag/CeO2/SBA-15 hybrid catalysts. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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5
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Xu G, Sun Y, Zhang Y, Xia L. Sulfite-triggered surface plasmon-catalyzed reduction of p-nitrothiophenol to p,p'-dimercaptoazobenzene. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 264:120282. [PMID: 34454131 DOI: 10.1016/j.saa.2021.120282] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 08/06/2021] [Accepted: 08/10/2021] [Indexed: 06/13/2023]
Abstract
The conversion of p-aminothiophenol (PATP) or p-nitrothiophenol (PNTP) to p,p'-dimercaptoazobenzene (DMAB) has been used as model reactions to study plasmon-catalyzed reaction on nanoparticles. Herein, we report the conversion of PNTP to DMAB which is triggered by SO32- ions on gold nanoparticles (AuNPs) for the first time. With the addition of SO32-, the Raman peaks at 1139, 1392, 1437 cm-1 appears, which indicates the formation of DMAB. The experiment results suggested that the synergistic effect of AuNPs and SO32- promoted the conversion of PNTP to DMAB. Besides, the proposed catalysis system is high selectivity to SO32- ions, which provides a new detection route to SO32- ions in the future. More importantly, the possible reaction mechanism has been put forward which is helpful to understand the surface plasmon-assisted catalytic reduction of PNTP on the surface of SERS substrate.
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Affiliation(s)
- Guangda Xu
- College of Chemistry, Liaoning University, Shenyang 110036, People's Republic of China
| | - Ye Sun
- College of Chemistry, Liaoning University, Shenyang 110036, People's Republic of China
| | - Yao Zhang
- College of Chemistry, Liaoning University, Shenyang 110036, People's Republic of China.
| | - Lixin Xia
- College of Chemistry, Liaoning University, Shenyang 110036, People's Republic of China.
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6
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Shen Z, Hong L, Zheng B, Wang G, Zhang B, Wang Z, Zhan F, Shen S, Yun R. Highly Efficient and Chemoselective Hydrogenation of Nitro Compounds into Amines by Nitrogen-Doped Porous Carbon-Supported Co/Ni Bimetallic Nanoparticles. Inorg Chem 2021; 60:16834-16839. [PMID: 34693707 DOI: 10.1021/acs.inorgchem.1c02740] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel Co/Ni bimetallic nanoparticle supported by nitrogen-doped porous carbon (NPC), Co5/Ni@NPC-700, exhibits high conversion, chemoselectivity, and recyclability in the hydrogenation of 16 different nitro compounds into desired amines with hydrazine hydrate under mild conditions. The synergistic effects of Co/Ni bimetal nanoparticles and the NPC-supported porous honeycomb structure with more accessible active sites may be responsible for the high catalytic hydrogenation performance.
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Affiliation(s)
- Zeyu Shen
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Lirui Hong
- The Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China
| | - Baishu Zheng
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Guanyu Wang
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Beibei Zhang
- The Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China
| | - Zhaoxu Wang
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Feiyang Zhan
- The Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China
| | - Shaohua Shen
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule of Ministry of Education, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Ruirui Yun
- The Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China
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7
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Ag–CeO2/SBA-15 composite prepared from Pluronic P123@SBA-15 hybrid as catalyst for room-temperature reduction of 4-nitrophenol. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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8
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Romolini G, Gambucci M, Ricciarelli D, Tarpani L, Zampini G, Latterini L. Photocatalytic activity of silica and silica-silver nanocolloids based on photo-induced formation of reactive oxygen species. Photochem Photobiol Sci 2021; 20:1161-1172. [PMID: 34449077 DOI: 10.1007/s43630-021-00089-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 08/08/2021] [Indexed: 12/23/2022]
Abstract
Semiconductor nanomaterials are often proposed as photocatalysts for wastewater treatment; silica nanomaterials are still largely unexploited because their photocatalytic performances need improvements, especially under visible light. The present study is a proof-of-concept that amorphous silica colloids once submitted to the proper surface modifications change into an efficient photocatalyst even under low-energy illumination source. For this reason, silica-based colloidal nanomaterials, such as bare (SiO2 NPs), aminated (NH2-SiO2 NPs), and Ag NPs-decorated (Ag-SiO2 NPs) silica, are tested as photocatalysts for the degradation of 9-anthracenecarboxylic acid (9ACA), taken as a model aromatic compound. Interestingly, upon irradiation at 313 nm, NH2-SiO2 NPs induce 9ACA degradation, and the effect is even improved when Ag-SiO2 NPs are used. On the other hand, irradiation at 405 nm activates the plasmon of Ag-SiO2 NPs photocatalyst, providing a faster and more efficient photodegradation. The photodegradation experiments are also performed under white light illumination, employing a low-intensity fluorescent lamp, confirming satisfying efficiencies. The catalytic effect of SiO2-based nanoparticles is thought to originate from photo-excitable surface defects and Ag NP plasmons since the catalytic degradation takes place only when the 9ACA is adsorbed on the surface. In addition, the involvement of reactive oxygen species was demonstrated through a scavenger use, obtaining a yield of 17%. In conclusion, this work shows the applicability of silica-based nanoparticles as photocatalysts through the involvement of silica surface defects, confirming that the silica colloids can act as photocatalysts under irradiation with monochromatic and white light. Silica and Ag-decorated silica colloids photosensitize the formation of Reactive Oxygen Species with 17% efficiencies. ROS are able to oxidase aromatic pollutants chemi-adsorbed on the surface of the colloids. Silica-silver nanocomposites present a photocatalytic activity useful to degrade aromatic compounds.
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Affiliation(s)
- G Romolini
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy.,Chem & Tech, Molecular Imaging and Photonics, KULeuven, Celestijnenlaan 200 F, B-3001, Leuven, Belgium
| | - M Gambucci
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - D Ricciarelli
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - L Tarpani
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - G Zampini
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy.
| | - L Latterini
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy.
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9
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Verma P, Kondo Y, Kuwahara Y, Kamegawa T, Mori K, Raja R, Yamashita H. Design and application of photocatalysts using porous materials. CATALYSIS REVIEWS 2021. [DOI: 10.1080/01614940.2021.1948302] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Priyanka Verma
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Osaka, Japan
- School of Chemistry, University of Southampton, Southampton, UK
| | - Yoshifumi Kondo
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Osaka, Japan
| | - Yasutaka Kuwahara
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Osaka, Japan
- Elements Strategy Initiative for Catalysts & Batteries ESICB, Kyoto University, Kyoto, Japan
- Jst, Presto, Saitama, Japan
| | - Takashi Kamegawa
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Osaka, Japan
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Kohsuke Mori
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Osaka, Japan
- Elements Strategy Initiative for Catalysts & Batteries ESICB, Kyoto University, Kyoto, Japan
| | - Robert Raja
- School of Chemistry, University of Southampton, Southampton, UK
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Osaka, Japan
- Elements Strategy Initiative for Catalysts & Batteries ESICB, Kyoto University, Kyoto, Japan
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10
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Photocatalytic reduction of nitroaromatics into anilines using CeO2-TiO2 nanocomposite. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111775] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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11
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Verma P, Le Brocq JJ, Raja R. Rational Design and Application of Covalent Organic Frameworks for Solar Fuel Production. Molecules 2021; 26:4181. [PMID: 34299457 PMCID: PMC8304392 DOI: 10.3390/molecules26144181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 11/16/2022] Open
Abstract
Harnessing solar energy and converting it into renewable fuels by chemical processes, such as water splitting and carbon dioxide (CO2) reduction, is a highly promising yet challenging strategy to mitigate the effects arising from the global energy crisis and serious environmental concerns. In recent years, covalent organic framework (COF)-based materials have gained substantial research interest because of their diversified architecture, tunable composition, large surface area, and high thermal and chemical stability. Their tunable band structure and significant light absorption with higher charge separation efficiency of photoinduced carriers make them suitable candidates for photocatalytic applications in hydrogen (H2) generation, CO2 conversion, and various organic transformation reactions. In this article, we describe the recent progress in the topology design and synthesis method of COF-based nanomaterials by elucidating the structure-property correlations for photocatalytic hydrogen generation and CO2 reduction applications. The effect of using various kinds of 2D and 3D COFs and strategies to control the morphology and enhance the photocatalytic activity is also summarized. Finally, the key challenges and perspectives in the field are highlighted for the future development of highly efficient COF-based photocatalysts.
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Affiliation(s)
- Priyanka Verma
- School of Chemistry, University of Southampton, University Road, Highfield, Southampton SO17 1BJ, UK;
| | | | - Robert Raja
- School of Chemistry, University of Southampton, University Road, Highfield, Southampton SO17 1BJ, UK;
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12
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Ashour MM, Mabrouk M, Soliman IE, Beherei HH, Tohamy KM. Mesoporous silica nanoparticles prepared by different methods for biomedical applications: Comparative study. IET Nanobiotechnol 2021; 15:291-300. [PMID: 34694665 PMCID: PMC8675824 DOI: 10.1049/nbt2.12023] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 09/09/2020] [Accepted: 10/19/2020] [Indexed: 12/14/2022] Open
Abstract
In the current investigation, mesoporous silica nanoparticles were obtained by various techniques, namely sol-gel (S1), micro-emulsion (S2) and hydrothermal synthesis (S3). The effect of those methods on the final features of the obtained mesoporous silica nanoparticles was studied. The obtained nanoparticles were investigated by TEM, BET surface area, Zetasizer, XRD and FTIR. The preparation method effect was evaluated on the drug release behaviour using doxycycline hyclate as a model drug. In addition, the degree of their compatibility against Saos-2 cell line was also determined. The morphology and microstructure of silica nanoparticles were found to be dependent on the utilised method. Those techniques produced particles with particle sizes of 50, 30-20 and 15 nm and also surface areas of 111.04, 164 and 538.72 m2 /g, respectively, for S1, S2 and S3. However, different preparation methods showed no remarkable changes for the physical and chemical integrities. The drug release test showed faster release from S2 compared with S1 and S3, which make them more applicable in cases require large doses for short periods. However, the release behaviour of S3 was satisfied for treatments which require long period with relatively highest release rate. The preparation method influenced the cell viability as S1 and S2 showed acceptable cell cytotoxicity compared with S3.
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Affiliation(s)
| | - Mostafa Mabrouk
- Refractories, Ceramics and Building Materials DepartmentNational Research CentreGizaEgypt
| | - Islam E. Soliman
- Biophysics BranchFaculty of ScienceAl‐Azhar UniversityCairoEgypt
| | - Hanan H. Beherei
- Refractories, Ceramics and Building Materials DepartmentNational Research CentreGizaEgypt
| | - Khairy M. Tohamy
- Biophysics BranchFaculty of ScienceAl‐Azhar UniversityCairoEgypt
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13
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Pelli Cresi JS, Principi E, Spurio E, Catone D, O’Keeffe P, Turchini S, Benedetti S, Vikatakavi A, D’Addato S, Mincigrucci R, Foglia L, Kurdi G, Nikolov IP, De Ninno G, Masciovecchio C, Nannarone S, Kopula Kesavan J, Boscherini F, Luches P. Ultrafast Dynamics of Plasmon-Mediated Charge Transfer in Ag@CeO 2 Studied by Free Electron Laser Time-Resolved X-ray Absorption Spectroscopy. NANO LETTERS 2021; 21:1729-1734. [PMID: 33570965 PMCID: PMC8023697 DOI: 10.1021/acs.nanolett.0c04547] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/27/2021] [Indexed: 05/21/2023]
Abstract
Expanding the activity of wide bandgap semiconductors from the UV into the visible range has become a central goal for their application in green solar photocatalysis. The hybrid plasmonic/semiconductor system, based on silver nanoparticles (Ag NPs) embedded in a film of CeO2, is an example of a functional material developed with this aim. In this work, we take advantage of the chemical sensitivity of free electron laser (FEL) time-resolved soft X-ray absorption spectroscopy (TRXAS) to investigate the electron transfer process from the Ag NPs to the CeO2 film generated by the NPs plasmonic resonance photoexcitation. Ultrafast changes (<200 fs) of the Ce N4,5 absorption edge allowed us to conclude that the excited Ag NPs transfer electrons to the Ce atoms of the CeO2 film through a highly efficient electron-based mechanism. These results demonstrate the potential of FEL-based TRXAS measurements for the characterization of energy transfer in novel hybrid plasmonic/semiconductor materials.
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Affiliation(s)
- Jacopo Stefano Pelli Cresi
- Elettra-Sincrotrone
Trieste S.C.p.A., Strada Statale 14 km 163.5 in Area Science Park, 34012 Basovizza, Trieste, Italy
| | - Emiliano Principi
- Elettra-Sincrotrone
Trieste S.C.p.A., Strada Statale 14 km 163.5 in Area Science Park, 34012 Basovizza, Trieste, Italy
| | - Eleonora Spurio
- Dipartimento
FIM, Università degli Studi di Modena
e Reggio Emilia, Via Campi 213/a, 41125 Modena, Italy
- Istituto
Nanoscienze, Consiglio Nazionale delle Ricerche,Via G. Campi 213/a, 41125 Modena, Italy
| | - Daniele Catone
- Division
of Ultrafast Processes in Materials (FLASHit), Istituto di Struttura della Materia (ISM-CNR), Area della Ricerca di Roma 2 Tor Vergata, Via del
Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Patrick O’Keeffe
- Division
of Ultrafast Processes in Materials (FLASHit), Istituto di Struttura della Materia (ISM-CNR), Area della Ricerca di Roma 1, I-00015 Monterotondo, Scalo, Italy
| | - Stefano Turchini
- Division
of Ultrafast Processes in Materials (FLASHit), Istituto di Struttura della Materia (ISM-CNR), Area della Ricerca di Roma 2 Tor Vergata, Via del
Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Stefania Benedetti
- Istituto
Nanoscienze, Consiglio Nazionale delle Ricerche,Via G. Campi 213/a, 41125 Modena, Italy
| | - Avinash Vikatakavi
- Dipartimento
FIM, Università degli Studi di Modena
e Reggio Emilia, Via Campi 213/a, 41125 Modena, Italy
- Istituto
Nanoscienze, Consiglio Nazionale delle Ricerche,Via G. Campi 213/a, 41125 Modena, Italy
| | - Sergio D’Addato
- Dipartimento
FIM, Università degli Studi di Modena
e Reggio Emilia, Via Campi 213/a, 41125 Modena, Italy
- Istituto
Nanoscienze, Consiglio Nazionale delle Ricerche,Via G. Campi 213/a, 41125 Modena, Italy
| | - Riccardo Mincigrucci
- Elettra-Sincrotrone
Trieste S.C.p.A., Strada Statale 14 km 163.5 in Area Science Park, 34012 Basovizza, Trieste, Italy
| | - Laura Foglia
- Elettra-Sincrotrone
Trieste S.C.p.A., Strada Statale 14 km 163.5 in Area Science Park, 34012 Basovizza, Trieste, Italy
| | - Gabor Kurdi
- Elettra-Sincrotrone
Trieste S.C.p.A., Strada Statale 14 km 163.5 in Area Science Park, 34012 Basovizza, Trieste, Italy
| | - Ivaylo P. Nikolov
- Elettra-Sincrotrone
Trieste S.C.p.A., Strada Statale 14 km 163.5 in Area Science Park, 34012 Basovizza, Trieste, Italy
| | - Giovanni De Ninno
- Elettra-Sincrotrone
Trieste S.C.p.A., Strada Statale 14 km 163.5 in Area Science Park, 34012 Basovizza, Trieste, Italy
- Laboratory
of Quantum Optics, University of Nova Gorica, Nova Gorica SI-5000, Slovenia
| | - Claudio Masciovecchio
- Elettra-Sincrotrone
Trieste S.C.p.A., Strada Statale 14 km 163.5 in Area Science Park, 34012 Basovizza, Trieste, Italy
| | - Stefano Nannarone
- IOM,
CNR, s.s. 14, Km. 163.5
in AREA Science Park, 34149 Basovizza, Trieste, Italy
| | - Jagadesh Kopula Kesavan
- Dipartimento di Fisica e Astronomia, Alma
Mater Studiorum − Università di Bologna, Viale C. Berti Pichat 6/2, 40127 Bologna, Italy
| | - Federico Boscherini
- Dipartimento di Fisica e Astronomia, Alma
Mater Studiorum − Università di Bologna, Viale C. Berti Pichat 6/2, 40127 Bologna, Italy
| | - Paola Luches
- Istituto
Nanoscienze, Consiglio Nazionale delle Ricerche,Via G. Campi 213/a, 41125 Modena, Italy
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14
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Verma P, Kuwahara Y, Mori K, Yamashita H. Visible-light-driven reduction of nitrostyrene utilizing plasmonic silver nanoparticle catalysts immobilized on oxide supports. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.03.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Bai K, Hao J, Yang Y, Qian A. The effect of hydrothermal temperature on the properties of SBA-15 materials. Heliyon 2020; 6:e04436. [PMID: 32793822 PMCID: PMC7413981 DOI: 10.1016/j.heliyon.2020.e04436] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 01/12/2020] [Accepted: 07/09/2020] [Indexed: 11/30/2022] Open
Abstract
In present work, ordered mesoporous material SBA-15 was synthesized by using poly (alkylene oxide) block copolymer (Pluronic P123) as template and ethylsilicate as silica source in weak acid environment in a wide range of temperature. The focus of synthesis research was high hydrothermal temperature. The obtained products were characterized by various techniques, including XRD, N2 sorption isotherms, FTIR spectroscopy and thermogravimetric. The effect of hydrothermal temperature on the specific surface area, pore volume and pore size of SBA-15 products was investigated systematically. As the hydrothermal temperature increases from the 100–120 °C, the specific surface area and the pore volume of the mesoporous molecular sieve increase greatly. When the hydrothermal temperature increase further, the pore volume of the mesoporous molecular sieve increase continually. But the specific surface area decrease significantly. When the hydrothermal temperature is too high (over 140 °C), the order degree begins to decrease, So the specific surface area and pore volume decrease significantly because the pores structure have significant destruction and collapse. Mechanism and structural characteristics of P123 block copolymer could explain in detail the effect of hydrothermal temperature on the property and structure of mesoporous molecular sieve SBA-15.
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Affiliation(s)
- Kaiyu Bai
- National Demonstration Center for Experimental Chemistry Education (Shanxi University), School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan, 030006, People's Republic of China
| | - Junsheng Hao
- National Demonstration Center for Experimental Chemistry Education (Shanxi University), School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan, 030006, People's Republic of China
| | - Yongxing Yang
- National Demonstration Center for Experimental Chemistry Education (Shanxi University), School of Chemistry and Chemical Engineering, Shanxi University, Wucheng Road 92, Taiyuan, 030006, People's Republic of China
- Corresponding author.
| | - Aniu Qian
- Institute of Resources and Environment Engineering, Shanxi University, Wucheng Road 92, Taiyuan, 030006, People's Republic of China
- Corresponding author.
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16
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Verma P, Kuwahara Y, Mori K, Raja R, Yamashita H. Functionalized mesoporous SBA-15 silica: recent trends and catalytic applications. NANOSCALE 2020; 12:11333-11363. [PMID: 32285073 DOI: 10.1039/d0nr00732c] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The development of advanced materials for heterogeneous catalytic applications requires fine control over the synthesis and structural parameters of the active site. Mesoporous silica materials have attracted increasing attention to be considered as an important class of nanostructured support materials in heterogeneous catalysis. Their large surface area, well-defined porous architecture and ability to incorporate metal atoms within the mesopores lead them to be a promising support material for designing a variety of different catalysts. In particular, SBA-15 mesoporous silica has its broad applicability in catalysis because of its comparatively thicker walls leading to higher thermal and mechanical stability. In this review article, various strategies to functionalize SBA-15 mesoporous silica have been reviewed with a view to evaluating its efficacy in different catalytic transformation reactions. Special attention has been given to the molecular engineering of the silica surface, within the framework and within the hexagonal mesoporous channels for anchoring metal oxides, single-site species and metal nanoparticles (NPs) serving as catalytically active sites.
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Affiliation(s)
- Priyanka Verma
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan. and School of Chemistry, University of Southampton, University Road, Highfield, Southampton, SO17 1 BJ, UK
| | - Yasutaka Kuwahara
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan. and Units of Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan and JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Kohsuke Mori
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan. and Units of Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Robert Raja
- School of Chemistry, University of Southampton, University Road, Highfield, Southampton, SO17 1 BJ, UK
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan. and Units of Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
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17
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Room-Temperature Nitrophenol Reduction over Ag–CeO2 Catalysts: The Role of Catalyst Preparation Method. Catalysts 2020. [DOI: 10.3390/catal10050580] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Ag–CeO2 catalysts (20 mol % Ag) were synthesized using different techniques (co-precipitation, impregnation, and impregnation of pre-reduced ceria), characterized by XRD, N2 sorption, TEM, H2-TPR methods, and probed in room-temperature p-nitrophenol reduction into p-aminophenol in aqueous solution at atmospheric pressure. The catalyst preparation method was found to determine the textural characteristics, the oxidation state and distribution of silver and, hence, the catalytic activity in the p-nitrophenol reduction. The impregnation technique was the most favorable for the formation over the ceria surface of highly dispersed silver species that are active in the p-nitrophenol reduction (the first-order rate constant k = 0.656 min−1).
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18
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Amirmahani N, Mahmoodi NO, Bahramnejad M, Seyedi N. Recent developments of metallic nanoparticles and their catalytic activity in organic reactions. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.201900534] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Najmeh Amirmahani
- Department of ChemistryUniversity Campus 2, University of Guilan Rasht Iran
- Department of Organic Chemistry, Environmental Health Engineering Research CenterKerman University of Medical Sciences Kerman Iran
| | - Nosrat O. Mahmoodi
- Department of Chemistry, Faculty of ScienceUniversity of Guilan Rasht Iran
| | - Mahboubeh Bahramnejad
- Department of Chemistry, Faculty of SciencePayame Noor University of Kerman Kerman Iran
| | - Neda Seyedi
- Department of Chemistry, Faculty of ScienceUniversity of Jiroft Jiroft Iran
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19
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Ayodhya D, Veerabhadram G. Green synthesis of garlic extract stabilized Ag@CeO2 composites for photocatalytic and sonocatalytic degradation of mixed dyes and antimicrobial studies. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127611] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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20
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Pelli Cresi JS, Silvagni E, Bertoni G, Spadaro MC, Benedetti S, Valeri S, D'Addato S, Luches P. Optical and electronic properties of silver nanoparticles embedded in cerium oxide. J Chem Phys 2020; 152:114704. [PMID: 32199417 DOI: 10.1063/1.5142528] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Wide bandgap oxides can be sensitized to visible light by coupling them with plasmonic nanoparticles (NPs). We investigate the optical and electronic properties of composite materials made of Ag NPs embedded within cerium oxide layers of different thickness. The electronic properties of the materials are investigated by x-ray and ultraviolet photoemission spectroscopy, which demonstrates the occurrence of static charge transfers between the metal and the oxide and its dependence on the NP size. Ultraviolet-visible spectrophotometry measurements show that the materials have a strong absorption in the visible range induced by the excitation of localized surface plasmon resonances. The plasmonic absorption band can be modified in shape and intensity by changing the NP aspect ratio and density and the thickness of the cerium oxide film.
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Affiliation(s)
- Jacopo Stefano Pelli Cresi
- Dipartimento di Scienze Fisiche Informatiche e Matematiche, Università degli Studi di Modena e Reggio Emilia, Via G. Campi 213/a, 41125 Modena, Italy
| | - Enrico Silvagni
- Dipartimento di Scienze Fisiche Informatiche e Matematiche, Università degli Studi di Modena e Reggio Emilia, Via G. Campi 213/a, 41125 Modena, Italy
| | - Giovanni Bertoni
- Istituto Nanoscienze, Consiglio Nazionale delle Ricerche, Via G. Campi 213/a, 41125 Modena, Italy
| | - Maria Chiara Spadaro
- Dipartimento di Scienze Fisiche Informatiche e Matematiche, Università degli Studi di Modena e Reggio Emilia, Via G. Campi 213/a, 41125 Modena, Italy
| | - Stefania Benedetti
- Istituto Nanoscienze, Consiglio Nazionale delle Ricerche, Via G. Campi 213/a, 41125 Modena, Italy
| | - Sergio Valeri
- Dipartimento di Scienze Fisiche Informatiche e Matematiche, Università degli Studi di Modena e Reggio Emilia, Via G. Campi 213/a, 41125 Modena, Italy
| | - Sergio D'Addato
- Dipartimento di Scienze Fisiche Informatiche e Matematiche, Università degli Studi di Modena e Reggio Emilia, Via G. Campi 213/a, 41125 Modena, Italy
| | - Paola Luches
- Istituto Nanoscienze, Consiglio Nazionale delle Ricerche, Via G. Campi 213/a, 41125 Modena, Italy
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21
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Sridharan M, Kamaraj P, Vennila R, Huh YS, Arthanareeswari M. Bio-inspired construction of melanin-like polydopamine-coated CeO2 as a high-performance visible-light-driven photocatalyst for hydrogen production. NEW J CHEM 2020. [DOI: 10.1039/d0nj02234a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In recent years, cerium oxide has been the most widely studied photocatalyst due to its unique properties.
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Affiliation(s)
- M. Sridharan
- Department of Chemistry
- SRM Institute of Science and Technology
- Chennai
- India
| | - P. Kamaraj
- Department of Chemistry
- Bharath Institute of Higher Education and Research
- Chennai
- India
| | - R. Vennila
- Department of Chemistry
- Adhiyaman Arts & Science College for Women
- Krishnagiri
- India
| | - Yun Suk Huh
- Department of Biological Engineering
- College of Engineering
- Inha University
- Incheon
- Korea
| | - M. Arthanareeswari
- Department of Chemistry
- SRM Institute of Science and Technology
- Chennai
- India
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22
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Verma P, Kuwahara Y, Mori K, Yamashita H. Design of Silver-Based Controlled Nanostructures for Plasmonic Catalysis under Visible Light Irradiation. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180244] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Priyanka Verma
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yasutaka Kuwahara
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Unit of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Kyoto 606-8501, Japan
| | - Kohsuke Mori
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Unit of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Kyoto 606-8501, Japan
- JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Unit of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Kyoto 606-8501, Japan
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