Raman spectroscopy as a tool for the elucidation of nanoparticles with core-shell structure of TiO2 and MoO3

被引：25
|
作者：
Santos, E. B. [1 ]
de Souza E Silva, J. M. [1 ]
Mazali, I. O. [1 ]
机构：
[1] Univ Campinas UNICAMP, Inst Chem, BR-13081970 Campinas, SP, Brazil
来源：
VIBRATIONAL SPECTROSCOPY | 2010年 / 54卷 / 02期
关键词：
Anatase TiO2; alpha-MoO3; Core-shell nanoparticles; Phonon confinement; Raman spectroscopy; SENSITIZED SOLAR-CELLS; PHONON CONFINEMENT; PHASE-TRANSITIONS; NANOCRYSTALS; MONTMORILLONITE; OXIDE; GLASS; SNO2;
D O I：
10.1016/j.vibspec.2010.03.010
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this work, we report the synthesis of TiO2 nanoparticles and core-shell TiO2-MoO3 and MoO3-TiO2 nanoparticles dispersed into porous Vycor glass by the metallo-organic decomposition process (MOD). The nanoparticles were analyzed using Raman spectroscopy by monitoring the E-2g band (phonons region for anatase TiO2) and the bands located at 820 and 996 cm(-1) (vibrational modes of alpha-MoO3) when Mo is present. The diameters of the TiO2 nanoparticles dispersed in the glass matrix were calculated by means of the phonon confinement model and the values obtained are 3.9, 4.6, and 5.7 nm depending on the number of impregnation-decomposition cycles used in the nanoparticle syntheses. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：89 / 92
页数：4
相关论文
共 50 条
  • [1] Synthesis and Raman spectroscopy study of TiO2 nanoparticles
    Alcantara, R.
    Navas, J.
    Fernandez-Lorenzo, C.
    Martin, J.
    Guillen, E.
    Anta, J. A.
    PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 8, NO 6, 2011, 8 (06): : 1970 - 1973
  • [2] Hierarchical MoO3/MnO2 core-shell nanostructures with enhanced pseudocapacitive properties
    Cao, Yunjiu
    Cui, Zhe
    Ji, Tao
    Li, Wenyao
    Xu, Kaibing
    Zou, Rujia
    Yang, Jianmao
    Qin, Zongyi
    Hu, Junqing
    JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 725 : 373 - 378
  • [3] Probing the structure of CuInS2-ZnS core-shell and similar nanocrystals by Raman spectroscopy
    Dzhagan, Volodymyr
    Kempken, Bjoern
    Valakh, Mykhailo
    Parisi, Juergen
    Kolny-Olesiak, Joanna
    Zahn, Dietrich R. T.
    APPLIED SURFACE SCIENCE, 2017, 395 : 24 - 28
  • [4] Size-controllable synthesis of functional heterostructured TiO2-WO3 core-shell nanoparticles
    Santos, Elias de Barros
    de Souza e Silva, Juliana Martins
    Sigoli, Fernando Aparecido
    Mazali, Italo Odone
    JOURNAL OF NANOPARTICLE RESEARCH, 2011, 13 (11) : 5909 - 5917
  • [5] Core-shell Au@(TiO2, SiO2) nanoparticles with tunable morphology
    Lekeufack, D. Djoumessi
    Brioude, A.
    Mouti, A.
    Alauzun, J. G.
    Stadelmann, P.
    Coleman, A. W.
    Miele, P.
    CHEMICAL COMMUNICATIONS, 2010, 46 (25) : 4544 - 4546
  • [6] Characterization of semiconductor core-shell nanoparticles by resonant Raman scattering and photoluminescence spectroscopy
    Dzhagan, V. M.
    Valakh, M. Ya.
    Raevskaya, A. E.
    Stroyuk, A. L.
    Kuchmiy, S. Ya.
    Zahn, D. R. T.
    APPLIED SURFACE SCIENCE, 2008, 255 (03) : 725 - 727
  • [7] Study of structure of the TiO2-MoO3 bilayer films by Raman spectroscopy
    Santos, Elias de Barros
    Sigoli, Fernando Aparecido
    Mazali, Italo Odone
    MATERIALS RESEARCH BULLETIN, 2014, 60 : 242 - 246
  • [8] Sc doped TiO2 nanocrystals with core-shell morphology
    Bakardjieva, S.
    Zenou, V.
    ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 2021, 77 : C987 - C987
  • [9] TiO2- and CeO2-Based Biphasic Core-Shell Nanoparticles with Tunable Core Sizes and Shell Thicknesses
    Correa, Deleon N.
    de Souza e Silva, Juliana M.
    Santos, Elias B.
    Sigoli, Fernando A.
    Souza Filho, Antonio G.
    Mazali, Italo O.
    JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (21) : 10380 - 10387
  • [10] Core-Shell Structure of Y2O3/TiO2 for Use in Dye Sensitized Solar Cells
    Li Wen-Xin
    Hu Lin-Hua
    Dai Song-Yuan
    ACTA PHYSICO-CHIMICA SINICA, 2011, 27 (10) : 2367 - 2372
12345