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Niu X, Du YE, Liu Y, Qi H, An J, Yang X, Feng Q. Hydrothermal synthesis and formation mechanism of the anatase nanocrystals with co-exposed high-energy {001}, {010} and [111]-facets for enhanced photocatalytic performance. RSC Adv 2017. [DOI: 10.1039/c7ra03707d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Anatase TiO2 nanocrystals with different morphologies and co-exposed high-energy {001}, {010} and [111]-facets were prepared through the hydrothermal treatment of tetratitanate HTO.
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Affiliation(s)
- Xianjun Niu
- School of Chemistry & Chemical Engineering
- Jinzhong University
- Jinzhong
- P. R. China
| | - Yi-en Du
- School of Chemistry & Chemical Engineering
- Jinzhong University
- Jinzhong
- P. R. China
- Beijing Key Laboratory of Energy Conversion and Storage Materials
| | - Yufang Liu
- School of Chemistry & Chemical Engineering
- Jinzhong University
- Jinzhong
- P. R. China
| | - Hongxue Qi
- School of Chemistry & Chemical Engineering
- Jinzhong University
- Jinzhong
- P. R. China
| | - Jing An
- School of Chemistry & Chemical Engineering
- Jinzhong University
- Jinzhong
- P. R. China
| | - Xiaojing Yang
- Beijing Key Laboratory of Energy Conversion and Storage Materials
- College of Chemistry
- Beijing Normal University
- Beijing
- China
| | - Qi Feng
- Department of Advanced Materials Science
- Faculty of Engineering
- Kagawa University
- Takamatsu-shi
- Japan
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Du YE, Li J, Liu Y, Niu X, Guo F, Feng Q. Synthesis of {110}-faceted rutile TiO2 nanocrystals from tetratitanate nanoribbons for improving dye-sensitized solar cell performance. RSC Adv 2016. [DOI: 10.1039/c5ra23451d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
{110}-faceted rutile TiO2 nanocrystals with nanorods and nanoflower morphologies were synthesized through simple hydrothermal treatment of a tetratitanate nanoribbons precursor.
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Affiliation(s)
- Yi-en Du
- School of Chemistry & Chemical Engineering
- Jinzhong University
- Jinzhong
- P. R. China
- Department of Advanced Materials Science
| | - Jun Li
- School of Chemistry & Chemical Engineering
- Jinzhong University
- Jinzhong
- P. R. China
| | - Yufang Liu
- School of Chemistry & Chemical Engineering
- Jinzhong University
- Jinzhong
- P. R. China
| | - Xianjun Niu
- School of Chemistry & Chemical Engineering
- Jinzhong University
- Jinzhong
- P. R. China
| | - Fang Guo
- School of Chemistry & Chemical Engineering
- Jinzhong University
- Jinzhong
- P. R. China
| | - Qi Feng
- Department of Advanced Materials Science
- Faculty of Engineering
- Kagawa University
- Takamatsu-shi
- Japan
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Brambilla A, Calloni A, Berti G, Bussetti G, Duò L, Ciccacci F. Epitaxial growth of thin TiO 2films on the Au covered Fe(100) surface. CRYSTAL RESEARCH AND TECHNOLOGY 2014. [DOI: 10.1002/crat.201300416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- A. Brambilla
- CNISM and Dipartimento di Fisica; Politecnico di Milano Piazza Leonardo Da Vinci 32; 20133 Milano Italy
| | - A. Calloni
- CNISM and Dipartimento di Fisica; Politecnico di Milano Piazza Leonardo Da Vinci 32; 20133 Milano Italy
| | - G. Berti
- CNISM and Dipartimento di Fisica; Politecnico di Milano Piazza Leonardo Da Vinci 32; 20133 Milano Italy
| | - G. Bussetti
- CNISM and Dipartimento di Fisica; Politecnico di Milano Piazza Leonardo Da Vinci 32; 20133 Milano Italy
| | - L. Duò
- CNISM and Dipartimento di Fisica; Politecnico di Milano Piazza Leonardo Da Vinci 32; 20133 Milano Italy
| | - F. Ciccacci
- CNISM and Dipartimento di Fisica; Politecnico di Milano Piazza Leonardo Da Vinci 32; 20133 Milano Italy
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Andrés J, Gracia L, Gonzalez-Navarrete P, Longo VM, Avansi W, Volanti DP, Ferrer MM, Lemos PS, La Porta FA, Hernandes AC, Longo E. Structural and electronic analysis of the atomic scale nucleation of Ag on α-Ag2WO4 induced by electron irradiation. Sci Rep 2014; 4:5391. [PMID: 24953210 PMCID: PMC4066248 DOI: 10.1038/srep05391] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 05/30/2014] [Indexed: 11/09/2022] Open
Abstract
In this work, we utilise a combination of theory, computation and experiments to understand the early events related to the nucleation of Ag filaments on α-Ag2WO4 crystals, which is driven by an accelerated electron beam from an electron microscope under high vacuum. The growth process and the chemical composition and elemental distribution in these filaments were analysed in depth at the nanoscale level using TEM, HAADF, EDS and XPS; the structural and electronic aspects were systematically studied in using first-principles electronic structure theory within QTAIM framework. The Ag nucleation and formation on α-Ag2WO4 is a result of the order/disorder effects generated in the crystal by the electron-beam irradiation. Both experimental and theoretical results show that this behavior is associated with structural and electronic changes of the [AgO2] and [AgO4] clusters and, to a minor extent, to the [WO6] cluster; these clusters collectively represent the constituent building blocks of α-Ag2WO4.
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Affiliation(s)
- Juan Andrés
- Departament de Química Física i Analítica, UJI−Universitat Jaume I, Av. de Vicent Sos Baynat, s/n, Castelló de la Plana 12071, Spain
| | - Lourdes Gracia
- Departament de Química Física i Analítica, UJI−Universitat Jaume I, Av. de Vicent Sos Baynat, s/n, Castelló de la Plana 12071, Spain
- Instituto de Química, UNESP−Universidade Estadual Paulista, R. Francisco Degni, 55, Araraquara 14800-900, Brazil
| | - Patricio Gonzalez-Navarrete
- Departament de Química Física i Analítica, UJI−Universitat Jaume I, Av. de Vicent Sos Baynat, s/n, Castelló de la Plana 12071, Spain
- Instituto de Química, UNESP−Universidade Estadual Paulista, R. Francisco Degni, 55, Araraquara 14800-900, Brazil
| | - Valeria M. Longo
- Instituto de Física de São Carlos, USP−Universidade de São Paulo, Av. Trabalhador são-carlense, São Carlos 13560-970, Brazil
| | - Waldir Avansi
- Departamento de Física, UFSCar−Universidade Federal de São Carlos, Rod. Washington Luis, km 235, São Carlos 13565-905, Brazil
| | - Diogo P. Volanti
- Departamento de Química e Ciências Ambientais, UNESP−Universidade Estadual Paulista, R. Cristóvão Colombo, 2265, São José do Rio Preto 15054-000, Brazil
| | - Mateus M. Ferrer
- Departamento de Física, UFSCar−Universidade Federal de São Carlos, Rod. Washington Luis, km 235, São Carlos 13565-905, Brazil
| | - Pablo S. Lemos
- Departamento de Física, UFSCar−Universidade Federal de São Carlos, Rod. Washington Luis, km 235, São Carlos 13565-905, Brazil
| | - Felipe A. La Porta
- Instituto de Química, UNESP−Universidade Estadual Paulista, R. Francisco Degni, 55, Araraquara 14800-900, Brazil
| | - Antonio C. Hernandes
- Instituto de Física de São Carlos, USP−Universidade de São Paulo, Av. Trabalhador são-carlense, São Carlos 13560-970, Brazil
| | - Elson Longo
- Instituto de Química, UNESP−Universidade Estadual Paulista, R. Francisco Degni, 55, Araraquara 14800-900, Brazil
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Mönig H, Todorović M, Baykara MZ, Schwendemann TC, Rodrigo L, Altman EI, Pérez R, Schwarz UD. Understanding scanning tunneling microscopy contrast mechanisms on metal oxides: a case study. ACS NANO 2013; 7:10233-10244. [PMID: 24111487 DOI: 10.1021/nn4045358] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A comprehensive analysis of contrast formation mechanisms in scanning tunneling microscopy (STM) experiments on a metal oxide surface is presented with the oxygen-induced (2√2×√2)R45° missing row reconstruction of the Cu(100) surface as a model system. Density functional theory and electronic transport calculations were combined to simulate the STM imaging behavior of pure and oxygen-contaminated metal tips with structurally and chemically different apexes while systematically varying bias voltage and tip-sample distance. The resulting multiparameter database of computed images was used to conduct an extensive comparison with experimental data. Excellent agreement was attained for a large number of cases, suggesting that the assumed model tips reproduce most of the commonly encountered contrast-determining effects. Specifically, we find that depending on the bias voltage polarity, copper-terminated tips allow selective imaging of two structurally distinct surface Cu sites, while oxygen-terminated tips show complex contrasts with pronounced asymmetry and tip-sample distance dependence. Considering the structural and chemical stability of the tips reveals that the copper-terminated apexes tend to react with surface oxygen at small tip-sample distances. In contrast, oxygen-terminated tips are considerably more stable, allowing exclusive surface oxygen imaging at small tip-sample distances. Our results provide a conclusive understanding of fundamental STM imaging mechanisms, thereby providing guidelines for experimentalists to achieve chemically selective imaging by properly selecting imaging parameters.
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Affiliation(s)
- Harry Mönig
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Strasse 10, 48149 Münster, Germany
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Pang CL, Lindsay R, Thornton G. Structure of clean and adsorbate-covered single-crystal rutile TiO2 surfaces. Chem Rev 2013; 113:3887-948. [PMID: 23676004 DOI: 10.1021/cr300409r] [Citation(s) in RCA: 264] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Chi Lun Pang
- London Centre for Nanotechnology and Department of Chemistry, University College London, London WC1H 0AJ, United Kingdom
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Walz MM, Schirmer M, Vollnhals F, Lukasczyk T, Steinrück HP, Marbach H. Electrons as “Invisible Ink”: Fabrication of Nanostructures by Local Electron Beam Induced Activation of SiOx. Angew Chem Int Ed Engl 2010; 49:4669-73. [DOI: 10.1002/anie.201001308] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Walz MM, Schirmer M, Vollnhals F, Lukasczyk T, Steinrück HP, Marbach H. Elektronen als “unsichtbare Tinte”: Herstellung von Nanostrukturen durch lokale elektronenstrahlinduzierte Aktivierung von SiOx. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001308] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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11
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Wu QH, Fortunelli A, Granozzi G. Preparation, characterisation and structure of Ti and Al ultrathin oxide films on metals. INT REV PHYS CHEM 2009. [DOI: 10.1080/01442350903172453] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Liu P, Cai W, Fang M, Li Z, Zeng H, Hu J, Luo X, Jing W. Room temperature synthesized rutile TiO(2) nanoparticles induced by laser ablation in liquid and their photocatalytic activity. NANOTECHNOLOGY 2009; 20:285707. [PMID: 19550020 DOI: 10.1088/0957-4484/20/28/285707] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
TiO(2) nanoparticles were prepared by one-step pulsed laser ablation of a titanium target immersed in a poly-(vinylpyrrolidone) solution at room temperature. The products were systematically characterized by x-ray diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy and x-ray photoelectron spectroscopy (XPS). The results indicated that the rutile TiO(2) nanocrystalline particles were one-step synthesized at room temperature and the mean size in diameter is about 50 nm with a narrow size distribution. A probable formation process was proposed on the basis of the microstructure and the instantaneous plasma plume induced by the laser. Photocatalytic activity was monitored by degradation of a methylene blue solution. The as-prepared rutile TiO(2) nanoparticles demonstrate a good photocatalytic performance. This work shows that pulsed laser ablation in liquid media is a good method to synthesize some nanosized materials which are difficult to produce by other conventional methods.
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Affiliation(s)
- Peisheng Liu
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, PR China.
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Li Y, Sasaki T, Shimizu Y, Koshizaki N. Hexagonal-Close-Packed, Hierarchical Amorphous TiO2 Nanocolumn Arrays: Transferability, Enhanced Photocatalytic Activity, and Superamphiphilicity without UV Irradiation. J Am Chem Soc 2008; 130:14755-62. [PMID: 18844352 DOI: 10.1021/ja805077q] [Citation(s) in RCA: 310] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yue Li
- Nanotechnology Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Takeshi Sasaki
- Nanotechnology Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Yoshiki Shimizu
- Nanotechnology Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Naoto Koshizaki
- Nanotechnology Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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Madey TE, Chen W, Wang H, Kaghazchi P, Jacob T. Nanoscale surface chemistry over faceted substrates: structure, reactivity and nanotemplates. Chem Soc Rev 2008; 37:2310-27. [DOI: 10.1039/b719551f] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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