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Mi L, Feng Y, Cao L, Xue M, Huang Y, Qin L, Seo HJ. A new silver metaniobate semiconductor of Ag 0.5La 0.5Nb 2O 6 with defect-perovskite structure. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 192:59-66. [PMID: 29128751 DOI: 10.1016/j.saa.2017.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 10/27/2017] [Accepted: 11/01/2017] [Indexed: 06/07/2023]
Abstract
Silver-containing lanthanum metaniobate Ag0.5La0.5Nb2O6 nanoparticles were synthesized by sol-gel polymerized complex method. A typical defect-perovskite structure was confirmed by XRD Rietveld refinements. The surface characteristics of the sample were tested by SEM, TEM and EDS measurements. SEM and TEM show that the sample presents ball-like particles with the diameters of 100nm to 400nm. The sample shows both self-activated luminescence and photocatalytic activities. Ag0.5La0.5Nb2O6 has a direct transition with band energy of 2.85eV. The Ag4d-O2p hybridization in the valence band contributes to the narrowed band gap. The luminescence properties of Ag0.5La0.5Nb2O6 have been investigated for the first time. The luminescence is characterized by two emission centers with maximum wavelength near 460 and 530nm. The emission and excitation spectra, decay curves and the thermal quenching mechanism were discussed. Ag0.5La0.5Nb2O6 shows the efficient photocatalytic activities and the photodegradation rate for methylene blue dye (MB) can reach about 95% under visible light (>420nm) irradiation in 5h. The trapped experiments for the active species were tested and discussed, which verified that OH radicals could be the major active species in photocatalysis.
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Affiliation(s)
- Longqing Mi
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yongyi Feng
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Lei Cao
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Mingqiang Xue
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yanlin Huang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Lin Qin
- Department of Physics and Interdisciplinary Program of Biomedical, Mechanical & Electrical Engineering, Pukyong National University, Busan 608-737, Republic of Korea
| | - Hyo Jin Seo
- Department of Physics and Interdisciplinary Program of Biomedical, Mechanical & Electrical Engineering, Pukyong National University, Busan 608-737, Republic of Korea.
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Qin L, Wei D, Huang Y, Kim SI, Yu YM, Seo HJ. Triple-Layered Perovskite Niobates CaRNb3O10 (R = La, Sm, Eu, Gd, Dy, Er, Yb, or Y): New Self-Activated Oxides. Inorg Chem 2013; 52:10407-13. [DOI: 10.1021/ic401854r] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lin Qin
- College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Donglei Wei
- Department
of Physics and Interdisciplinary Program of Biomedical Engineering, Pukyong National University, Busan 608-737, Republic of Korea
- LED-Marin Convergence Technology R&BD Center, Pukyong National University, Busan 608-739, Republic of Korea
| | - Yanlin Huang
- College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou, Jiangsu 215123, China
| | - Sun Il Kim
- Department
of Physics and Interdisciplinary Program of Biomedical Engineering, Pukyong National University, Busan 608-737, Republic of Korea
| | - Young Moon Yu
- LED-Marin Convergence Technology R&BD Center, Pukyong National University, Busan 608-739, Republic of Korea
| | - Hyo Jin Seo
- Department
of Physics and Interdisciplinary Program of Biomedical Engineering, Pukyong National University, Busan 608-737, Republic of Korea
- LED-Marin Convergence Technology R&BD Center, Pukyong National University, Busan 608-739, Republic of Korea
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Zhang X, Liu SX, Li SJ, Gao YH, Wang XN, Tang Q, Liu YW. Two Members of the {X4Nb16O56} Family (X = Ge, Si) Based on [(GeOH)2Ge2Nb16H2O54]12-and [K(GeOH)2Ge2Nb16H3O54]10-. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201117] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Bugaris DE, zur Loye HC. Auf der Suche nach neuen Materialien: Kristallzucht von quaternären und höherwertigen Oxiden in Flussmitteln. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201102676] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Bugaris DE, zur Loye HC. Auf der Suche nach neuen Materialien: Kristallzucht von quaternären und höherwertigen Oxiden in Flussmitteln. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201102676 and doi:10.1002/anie.201102676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Materials Discovery by Flux Crystal Growth: Quaternary and Higher Order Oxides. Angew Chem Int Ed Engl 2012; 51:3780-811. [DOI: 10.1002/anie.201102676] [Citation(s) in RCA: 278] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Indexed: 11/07/2022]
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Du F, Huang Y, Kim SI, Seo HJ. The Self-activated Luminescence Properties of Blue-emitting Sr9Ga(PO4)7. CHEM LETT 2012. [DOI: 10.1246/cl.2012.15] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Fuping Du
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University
| | - Yanlin Huang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University
| | - Sun Il Kim
- Department of Physics, Pukyong National University
| | - Hyo Jin Seo
- Department of Physics, Pukyong National University
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Synthesis, crystal structures and photoluminescence properties of new oxyborates, Mg5NbO3(BO3)3 and Mg5TaO3(BO3)3, with novel warwickite-type superstructures. J SOLID STATE CHEM 2011. [DOI: 10.1016/j.jssc.2011.07.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Atuchin V, Grivel JC, Zhang Z. Core level photoemission spectroscopy and chemical bonding in Sr2Ta2O7. Chem Phys 2009. [DOI: 10.1016/j.chemphys.2009.04.010] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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