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Pandiyarajan T, Mangalaraja RV, Karthikeyan B, Udayabhaskar R, Contreras D, Sepulveda-Guzman S, Gracia-Pinilla MA. Influence of RE (Pr 3+, Er 3+, Nd 3+) doping on structural, vibrational and enhanced persistent photocatalytic properties of ZnO nanostructures. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 268:120679. [PMID: 34894563 DOI: 10.1016/j.saa.2021.120679] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/27/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
Rare earth (RE- Pr, Er and Nd) doped ZnO nanostructures were prepared through simple wet chemical precipitation route. The RE doping induced interesting morphological transition from spherical to flower like structures were analyzed. The X-ray diffraction (XRD) measurements revealed that the prepared materials were of highly crystalline in nature and RE dopant ions did not altered the crystal structure of ZnO. The microstrain of ZnO was altered with respect to the nature of dopants. In the case of the Pr doped ZnO, X-ray photoelectron spectroscopy (XPS) analysis confirmed that the dopant (Pr) ions successfully substituted in the ZnO lattice. Raman spectra revealed RE doping induced lower energy side shift and variation in intensity of the peaks related to the characteristic phonon modes of ZnO. In the case of Nd doped ZnO nanostructures, dopant induced suppression in classical Raman modes and evolution of multiphonon related modes were identified. Optical diffuse reflectance spectral (DRS) measurements, along with the characteristic excitonic band of ZnO, other bands associated to the transitions of 4f energy levels related to the RE ions were observed. The partially filled 4f orbitals led to the enhanced photocatalytic activity in RE doped ZnO nanostructures. The observed enhanced photocatalytic activity in RE doped ZnO when compared to bare ZnO was discussed. The decolorization efficiency of MB ensued the following order 96 > 94 > 86 > 78% for ZnErO, ZnNdO, ZnPrO and ZnO, respectively.
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Affiliation(s)
- T Pandiyarajan
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, University of Concepcion, Chile; Department of Sciences, Indian Institute of Information Technology Design and Manufacturing Kurnool, Andhra Pradesh 518007, India.
| | - R V Mangalaraja
- Advanced Ceramics and Nanotechnology Laboratory, Department of Materials Engineering, University of Concepcion, Chile.
| | - B Karthikeyan
- Department of Physics, National Institute of Technology, Tiruchirappalli 620 015, India
| | - R Udayabhaskar
- Hybrid Nanomaterials Laboratory (HNL), Institute of Scientific and Technological Research (IDICTEC), University of Atacama, Copayapu 485, Copiapo, Chile
| | - David Contreras
- Departament of Analytical and Inorganic Chemistry, Faculty of Chemical Sciences, Centre for Biotechnology, University of Concepcion, Chile
| | - Selene Sepulveda-Guzman
- Universidad Autónoma de Nuevo León, UANL, Facultad de Ingeniería Mecánica y Eléctrica, FIME, Ave. Pedro de Alba s/n, Ciudad Universitaria, C.P.66455 San Nicolás de los Garza, N.L., Mexico
| | - M A Gracia-Pinilla
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Físico-Matemáticas, Av. Universidad, Cd. Universitaria, San Nicolás de los Garza, NL, Mexico; Centro de Investigación en Innovación y Desarrollo en Ingeniería y Tecnología, Universidad Autónoma de Nuevo León, PIIT, Apodaca, Nuevo León 66600, Mexico
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Pandiyarajan T, Mangalaraja RV, Karthikeyan B, Sepulveda-Guzman S, Mansilla HD, Contreras D, Escalona N, Gracia-Pinilla MA. Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures. RSC Adv 2016. [DOI: 10.1039/c5ra27147a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Size and shape tuneable ZnO nanostructures were prepared by a low frequency ultrasound (42 kHz) route using various organic solvents as the reaction media.
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Affiliation(s)
- Thangaraj Pandiyarajan
- Advanced Ceramics and Nanotechnology Laboratory
- Department of Materials Engineering
- University of Concepcion
- Chile
| | | | | | - Selene Sepulveda-Guzman
- Universidad Autónoma de Nuevo León UANL
- Facultad de Ingeniería Mecánica y Eléctrica
- FIME
- San Nicolás de los Garza
- Mexico
| | - Héctor D. Mansilla
- Department of Organic Chemistry
- Faculty of Chemical Sciences
- University of Concepcion
- Chile
| | - David Contreras
- Department of Analytical and Inorganic Chemistry
- Faculty of Chemical Sciences
- Center for Biotechnology
- University of Concepcion
- Chile
| | - Néstor Escalona
- Department of Chemical and Bioprocess Engineering
- School of Engineering
- Catholic University of Chile
- Macul
- Santiago
| | - M. A. Gracia-Pinilla
- Universidad Autónoma de Nuevo León
- Facultad de Ciencias Físico-Matemáticas
- San Nicolás de los Garza
- Mexico
- Centro de Investigación en Innovación y Desarrollo en Ingeniería y Tecnología
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Hu H, Song W, Ruan W, Wang Y, Wang X, Xu W, Zhao B, Ozaki Y. Fabrication of one-dimensional ZnO/4-Mpy/Ag assemblies and their spectroscopic studies. J Colloid Interface Sci 2010; 344:251-5. [DOI: 10.1016/j.jcis.2009.12.061] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2009] [Revised: 12/14/2009] [Accepted: 12/26/2009] [Indexed: 11/24/2022]
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Kunert H, Machatine A, Hoffmann A, Kaczmarczyk G, Haboeck U, Malherbe J, Barnas J, Wagner M, Brink J. Phonons in sapphire Al2O3 substrate for ZnO and GaN. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2007. [DOI: 10.1016/j.msec.2006.08.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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