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Designing of metallic nanocrystals embedded in non-stoichiometric perovskite nanomaterial and its surface-electronic characteristics
Suriyaprakash, Jagadeesh; Xu, Y. B.; Zhu, Y. L.; Yang, L. X.; Tang, Y. L.; Wang, Y. J.; Li, S.; Ma, X. L.; Ma, XL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Ma, XL (reprint author), Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China.
2017-08-21
Source PublicationNATURE PUBLISHING GROUP
ISSN2045-2322
Volume7Pages:-
AbstractEngineering of novel functional nanocomposite as like as the metallic nanocrystals supported non-stoichiometric perovskite nanomaterial in controlled parameters (size, shape and ratio of chemical characteristics) is a challengeable task. In this context, we present a facile route to fabricate and study its physicochemical property at real time mode in this report. Nanoscale pure Pb crystals surfaced on non-stoichiometric A-site deficient Pb1-xTiO3-gamma nanoparticle were fabricated when a precursor lead titanate (PbTiO3) nanoparticle was exposed to an electron beam irradiation (EBI) in a transmission electron microscope (TEM) at ambient temperature. In the state of the art, the chemical states and electronic structure of non-irradiated and irradiated PbTiO3 were studied by X-ray photoelectron spectroscopy (XPS). Electron bombardment resulted in a new visible feature at low binding energy in the Pb 4f core level, while Ti 2p and O 1s line shape showed slight changes. The Fermi level of the corresponding materials was determined to be 1.65 +/- 0.1 eV and 2.05 +/- 0.1 eV above the valence band maximum, respectively. The normal, weakly p-type PTO exhibits peculiar n-type feature after EBI process (The Fermi level moves near to the conduction band). A feasible mechanism is proposed involving the electron-stimulated local bond-breaking phenomenon in PbTiO3.; Engineering of novel functional nanocomposite as like as the metallic nanocrystals supported non-stoichiometric perovskite nanomaterial in controlled parameters (size, shape and ratio of chemical characteristics) is a challengeable task. In this context, we present a facile route to fabricate and study its physicochemical property at real time mode in this report. Nanoscale pure Pb crystals surfaced on non-stoichiometric A-site deficient Pb1-xTiO3-gamma nanoparticle were fabricated when a precursor lead titanate (PbTiO3) nanoparticle was exposed to an electron beam irradiation (EBI) in a transmission electron microscope (TEM) at ambient temperature. In the state of the art, the chemical states and electronic structure of non-irradiated and irradiated PbTiO3 were studied by X-ray photoelectron spectroscopy (XPS). Electron bombardment resulted in a new visible feature at low binding energy in the Pb 4f core level, while Ti 2p and O 1s line shape showed slight changes. The Fermi level of the corresponding materials was determined to be 1.65 +/- 0.1 eV and 2.05 +/- 0.1 eV above the valence band maximum, respectively. The normal, weakly p-type PTO exhibits peculiar n-type feature after EBI process (The Fermi level moves near to the conduction band). A feasible mechanism is proposed involving the electron-stimulated local bond-breaking phenomenon in PbTiO3.
description.department[suriyaprakash, jagadeesh ; xu, y. b. ; zhu, y. l. ; yang, l. x. ; tang, y. l. ; wang, y. j. ; li, s. ; ma, x. l.] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [suriyaprakash, jagadeesh ; li, s.] univ chinese acad sci, beijing 100039, peoples r china ; [ma, x. l.] lanzhou univ technol, state key lab adv proc & recycling nonferrous met, lanzhou 730050, gansu, peoples r china
Subject AreaMultidisciplinary Sciences
Funding OrganizationNational Natural Science Foundation of China [51231007, 51571197, 51501194, 51671194, 51521091, 51401212]; National Basic Research Program of China [2014CB921002]; Chinese Academy of Sciences [QYZDJ-SSW-JSC010]; IMR SYNL-T.S. Ke Research Fellowship [2016177]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79143
Collection中国科学院金属研究所
Corresponding AuthorMa, XL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.; Ma, XL (reprint author), Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China.
Recommended Citation
GB/T 7714
Suriyaprakash, Jagadeesh,Xu, Y. B.,Zhu, Y. L.,et al. Designing of metallic nanocrystals embedded in non-stoichiometric perovskite nanomaterial and its surface-electronic characteristics[J]. NATURE PUBLISHING GROUP,2017,7:-.
APA Suriyaprakash, Jagadeesh.,Xu, Y. B..,Zhu, Y. L..,Yang, L. X..,Tang, Y. L..,...&Ma, XL .(2017).Designing of metallic nanocrystals embedded in non-stoichiometric perovskite nanomaterial and its surface-electronic characteristics.NATURE PUBLISHING GROUP,7,-.
MLA Suriyaprakash, Jagadeesh,et al."Designing of metallic nanocrystals embedded in non-stoichiometric perovskite nanomaterial and its surface-electronic characteristics".NATURE PUBLISHING GROUP 7(2017):-.
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