Multi-functional Zn2TiO4:Sm3+ nanopowders: Excellent performance as an electrochemical sensor and an UV photocatalyst
Zn2TiO4:Sm3+ (1–9 mol %) nano powders (NPs) were prepared by a facile solution combustion route using oxalyl dihydrazide (ODH) as a fuel. The obtained product was characterized by Powder X-ray diffraction (PXRD), Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and UV–Visib...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2018-06-01
|
| Series: | Journal of Science: Advanced Materials and Devices |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468217917302356 |
| _version_ | 1828791210243784704 |
|---|---|
| author | K.M. Girish S.C. Prashantha H. Nagabhushana C.R. Ravikumar H.P. Nagaswarupa Ramachandra Naik H.B. Premakumar B. Umesh |
| author_facet | K.M. Girish S.C. Prashantha H. Nagabhushana C.R. Ravikumar H.P. Nagaswarupa Ramachandra Naik H.B. Premakumar B. Umesh |
| author_sort | K.M. Girish |
| collection | DOAJ |
| description | Zn2TiO4:Sm3+ (1–9 mol %) nano powders (NPs) were prepared by a facile solution combustion route using oxalyl dihydrazide (ODH) as a fuel. The obtained product was characterized by Powder X-ray diffraction (PXRD), Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and UV–Visible studies. Cyclic voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS) measurements were performed using a carbon paste electrode. CV results indicated the reversibility of the electrode reaction, whereas EIS measurements revealed a reduction in the charge transfer resistance with increase in the double layer capacitance of the electrode. The prepared electrodes also exhibited high sensitivity for detection of paracetamol. The photocatalytic degradation of Zn2TiO4:Sm3+ on Titan yellow (TY) dye was evaluated under UV light irradiation. The catalyst showed an excellent photocatalytic activity (PCA) for the degradation of TY dye due to reduction of photo generated electron–hole pair recombination, thereby enhancing absorption. The high electrode reversibility and excellent catalytic activity of Zn2TiO4:Sm3+ make it promising for multifunctional applications. Keywords: Zn2TiO4:Sm3+, XPS, Cyclic voltammetry, EIS, Photocatalysis |
| first_indexed | 2024-12-12T02:46:49Z |
| format | Article |
| id | doaj.art-beabd392573c43959318948b73afdad6 |
| institution | Directory Open Access Journal |
| issn | 2468-2179 |
| language | English |
| last_indexed | 2024-12-12T02:46:49Z |
| publishDate | 2018-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Science: Advanced Materials and Devices |
| spelling | doaj.art-beabd392573c43959318948b73afdad62022-12-22T00:41:00ZengElsevierJournal of Science: Advanced Materials and Devices2468-21792018-06-0132151160Multi-functional Zn2TiO4:Sm3+ nanopowders: Excellent performance as an electrochemical sensor and an UV photocatalystK.M. Girish0S.C. Prashantha1H. Nagabhushana2C.R. Ravikumar3H.P. Nagaswarupa4Ramachandra Naik5H.B. Premakumar6B. Umesh7Department of Physics, Dayanand Sagar Academy of Technology and Management, Bengaluru 560082, India; Research and Development Center, Bharathiar University, Coimbatore 641046, IndiaResearch and Development Center, Bharathiar University, Coimbatore 641046, India; Research Center, Department of Science, East West Institute of Technology, VTU, Bengaluru 560091, India; Corresponding author. Research Center, Department of Science, East West Institute of Technology, VTU, Bengaluru 560091, India.Prof. CNR Rao Center for Advanced Materials, Tumkur University, Tumkur 572103, IndiaResearch Center, Department of Science, East West Institute of Technology, VTU, Bengaluru 560091, IndiaResearch Center, Department of Science, East West Institute of Technology, VTU, Bengaluru 560091, IndiaDepartment of Physics, New Horizon College of Engineering, Bengaluru 560103, IndiaDepartment of Physics, Ramaiah University of Applied Sciences, Peenya Campus, Bengaluru 560058, IndiaDepartment of Humanities, PVP Polytechnic, Dr. AIT Campus, Bengaluru 560056, IndiaZn2TiO4:Sm3+ (1–9 mol %) nano powders (NPs) were prepared by a facile solution combustion route using oxalyl dihydrazide (ODH) as a fuel. The obtained product was characterized by Powder X-ray diffraction (PXRD), Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and UV–Visible studies. Cyclic voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS) measurements were performed using a carbon paste electrode. CV results indicated the reversibility of the electrode reaction, whereas EIS measurements revealed a reduction in the charge transfer resistance with increase in the double layer capacitance of the electrode. The prepared electrodes also exhibited high sensitivity for detection of paracetamol. The photocatalytic degradation of Zn2TiO4:Sm3+ on Titan yellow (TY) dye was evaluated under UV light irradiation. The catalyst showed an excellent photocatalytic activity (PCA) for the degradation of TY dye due to reduction of photo generated electron–hole pair recombination, thereby enhancing absorption. The high electrode reversibility and excellent catalytic activity of Zn2TiO4:Sm3+ make it promising for multifunctional applications. Keywords: Zn2TiO4:Sm3+, XPS, Cyclic voltammetry, EIS, Photocatalysishttp://www.sciencedirect.com/science/article/pii/S2468217917302356 |
| spellingShingle | K.M. Girish S.C. Prashantha H. Nagabhushana C.R. Ravikumar H.P. Nagaswarupa Ramachandra Naik H.B. Premakumar B. Umesh Multi-functional Zn2TiO4:Sm3+ nanopowders: Excellent performance as an electrochemical sensor and an UV photocatalyst Journal of Science: Advanced Materials and Devices |
| title | Multi-functional Zn2TiO4:Sm3+ nanopowders: Excellent performance as an electrochemical sensor and an UV photocatalyst |
| title_full | Multi-functional Zn2TiO4:Sm3+ nanopowders: Excellent performance as an electrochemical sensor and an UV photocatalyst |
| title_fullStr | Multi-functional Zn2TiO4:Sm3+ nanopowders: Excellent performance as an electrochemical sensor and an UV photocatalyst |
| title_full_unstemmed | Multi-functional Zn2TiO4:Sm3+ nanopowders: Excellent performance as an electrochemical sensor and an UV photocatalyst |
| title_short | Multi-functional Zn2TiO4:Sm3+ nanopowders: Excellent performance as an electrochemical sensor and an UV photocatalyst |
| title_sort | multi functional zn2tio4 sm3 nanopowders excellent performance as an electrochemical sensor and an uv photocatalyst |
| url | http://www.sciencedirect.com/science/article/pii/S2468217917302356 |
| work_keys_str_mv | AT kmgirish multifunctionalzn2tio4sm3nanopowdersexcellentperformanceasanelectrochemicalsensorandanuvphotocatalyst AT scprashantha multifunctionalzn2tio4sm3nanopowdersexcellentperformanceasanelectrochemicalsensorandanuvphotocatalyst AT hnagabhushana multifunctionalzn2tio4sm3nanopowdersexcellentperformanceasanelectrochemicalsensorandanuvphotocatalyst AT crravikumar multifunctionalzn2tio4sm3nanopowdersexcellentperformanceasanelectrochemicalsensorandanuvphotocatalyst AT hpnagaswarupa multifunctionalzn2tio4sm3nanopowdersexcellentperformanceasanelectrochemicalsensorandanuvphotocatalyst AT ramachandranaik multifunctionalzn2tio4sm3nanopowdersexcellentperformanceasanelectrochemicalsensorandanuvphotocatalyst AT hbpremakumar multifunctionalzn2tio4sm3nanopowdersexcellentperformanceasanelectrochemicalsensorandanuvphotocatalyst AT bumesh multifunctionalzn2tio4sm3nanopowdersexcellentperformanceasanelectrochemicalsensorandanuvphotocatalyst |