Evaluation of Photocatalytic Performance of Nano-Sized Sr<sub>0.9</sub>La<sub>0.1</sub>TiO<sub>3</sub> and Sr<sub>0.25</sub>Ca<sub>0.25</sub>Na<sub>0.25</sub>Pr<sub>0.25</sub>TiO<sub>3</sub> Ceramic Powders for Water Purification
Water pollution is a significant issue nowadays. Among the many different technologies for water purification, photocatalysis is a very promising and environment-friendly approach. In this study, the photocatalytic activity of Sr<sub>0.9</sub>La<sub>0.1</sub>TiO<sub>3&l...
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| Format: | Article |
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MDPI AG
2022-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/23/4193 |
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| author | Aleksandra Jovanoski Kostić Nikola Kanas Vladimir Rajić Annu Sharma Subramshu S. Bhattacharya Stevan Armaković Maria M. Savanović Sanja J. Armaković |
| author_facet | Aleksandra Jovanoski Kostić Nikola Kanas Vladimir Rajić Annu Sharma Subramshu S. Bhattacharya Stevan Armaković Maria M. Savanović Sanja J. Armaković |
| author_sort | Aleksandra Jovanoski Kostić |
| collection | DOAJ |
| description | Water pollution is a significant issue nowadays. Among the many different technologies for water purification, photocatalysis is a very promising and environment-friendly approach. In this study, the photocatalytic activity of Sr<sub>0.9</sub>La<sub>0.1</sub>TiO<sub>3</sub> (SLTO) and Sr<sub>0.25</sub>Ca<sub>0.25</sub>Na<sub>0.25</sub>Pr<sub>0.25</sub>TiO<sub>3</sub> (SCNPTO) nano-sized powders were evaluated by degradation of pindolol in water. Pindolol is almost entirely insoluble in water due to its lipophilic properties. The synthesis of the SCNPTO was performed using the reverse co-precipitation method using nitrate precursors, whereas the SLTO was produced by spray pyrolysis (CerPoTech, Trondheim Norway). The phase purity of the synthesized powders was validated by XRD, while HR-SEM revealed particle sizes between 50 and 70 nm. The obtained SLTO and SCNPTO powders were agglomerated but had relatively similar specific surface areas of about 27.6 m<sup>2</sup> g<sup>−1</sup> and 34.0 m<sup>2</sup> g<sup>−1</sup>, respectively. The energy band gaps of the SCNPTO and SLTO were calculated (DFT) to be about 2.69 eV and 3.05 eV, respectively. The photocatalytic performances of the materials were examined by removing the pindolol from the polluted water under simulated solar irradiation (SSI), UV-LED irradiation, and UV irradiation. Ultra-fast liquid chromatography was used to monitor the kinetics of the pindolol degradation with diode array detection (UFLC–DAD). The SLTO removed 68%, 94%, and 100% of the pindolol after 240 min under SSI, UV-LED, and UV irradiation, respectively. A similar but slightly lower photocatalytic activity was obtained with the SCNPTO under identical conditions, resulting in 65%, 84%, and 93% degradation of the pindolol, respectively. Chemical oxygen demand measurements showed high mineralization of the investigated mixtures under UV-LED and UV irradiation. |
| first_indexed | 2024-03-09T17:38:34Z |
| format | Article |
| id | doaj.art-459100b5fc0d449ebeb112588c5d8bfe |
| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-03-09T17:38:34Z |
| publishDate | 2022-11-01 |
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| spelling | doaj.art-459100b5fc0d449ebeb112588c5d8bfe2023-11-24T11:46:59ZengMDPI AGNanomaterials2079-49912022-11-011223419310.3390/nano12234193Evaluation of Photocatalytic Performance of Nano-Sized Sr<sub>0.9</sub>La<sub>0.1</sub>TiO<sub>3</sub> and Sr<sub>0.25</sub>Ca<sub>0.25</sub>Na<sub>0.25</sub>Pr<sub>0.25</sub>TiO<sub>3</sub> Ceramic Powders for Water PurificationAleksandra Jovanoski Kostić0Nikola Kanas1Vladimir Rajić2Annu Sharma3Subramshu S. Bhattacharya4Stevan Armaković5Maria M. Savanović6Sanja J. Armaković7University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, 21000 Novi Sad, SerbiaUniversity of Novi Sad, Institute BioSense, 21000 Novi Sad, SerbiaUniversity of Belgrade, INS Vinča, Department of Atomic Physics, 11000 Belgrade, SerbiaNanofunctional Materials Technology Centre, Department of MME, IIT Madras, Chennai 600001, IndiaNanofunctional Materials Technology Centre, Department of MME, IIT Madras, Chennai 600001, IndiaUniversity of Novi Sad, Faculty of Sciences, Department of Physics, 21000 Novi Sad, SerbiaUniversity of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, 21000 Novi Sad, SerbiaUniversity of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, 21000 Novi Sad, SerbiaWater pollution is a significant issue nowadays. Among the many different technologies for water purification, photocatalysis is a very promising and environment-friendly approach. In this study, the photocatalytic activity of Sr<sub>0.9</sub>La<sub>0.1</sub>TiO<sub>3</sub> (SLTO) and Sr<sub>0.25</sub>Ca<sub>0.25</sub>Na<sub>0.25</sub>Pr<sub>0.25</sub>TiO<sub>3</sub> (SCNPTO) nano-sized powders were evaluated by degradation of pindolol in water. Pindolol is almost entirely insoluble in water due to its lipophilic properties. The synthesis of the SCNPTO was performed using the reverse co-precipitation method using nitrate precursors, whereas the SLTO was produced by spray pyrolysis (CerPoTech, Trondheim Norway). The phase purity of the synthesized powders was validated by XRD, while HR-SEM revealed particle sizes between 50 and 70 nm. The obtained SLTO and SCNPTO powders were agglomerated but had relatively similar specific surface areas of about 27.6 m<sup>2</sup> g<sup>−1</sup> and 34.0 m<sup>2</sup> g<sup>−1</sup>, respectively. The energy band gaps of the SCNPTO and SLTO were calculated (DFT) to be about 2.69 eV and 3.05 eV, respectively. The photocatalytic performances of the materials were examined by removing the pindolol from the polluted water under simulated solar irradiation (SSI), UV-LED irradiation, and UV irradiation. Ultra-fast liquid chromatography was used to monitor the kinetics of the pindolol degradation with diode array detection (UFLC–DAD). The SLTO removed 68%, 94%, and 100% of the pindolol after 240 min under SSI, UV-LED, and UV irradiation, respectively. A similar but slightly lower photocatalytic activity was obtained with the SCNPTO under identical conditions, resulting in 65%, 84%, and 93% degradation of the pindolol, respectively. Chemical oxygen demand measurements showed high mineralization of the investigated mixtures under UV-LED and UV irradiation.https://www.mdpi.com/2079-4991/12/23/4193UV degradationpharmaceuticalspindololapplication nanomaterials |
| spellingShingle | Aleksandra Jovanoski Kostić Nikola Kanas Vladimir Rajić Annu Sharma Subramshu S. Bhattacharya Stevan Armaković Maria M. Savanović Sanja J. Armaković Evaluation of Photocatalytic Performance of Nano-Sized Sr<sub>0.9</sub>La<sub>0.1</sub>TiO<sub>3</sub> and Sr<sub>0.25</sub>Ca<sub>0.25</sub>Na<sub>0.25</sub>Pr<sub>0.25</sub>TiO<sub>3</sub> Ceramic Powders for Water Purification Nanomaterials UV degradation pharmaceuticals pindolol application nanomaterials |
| title | Evaluation of Photocatalytic Performance of Nano-Sized Sr<sub>0.9</sub>La<sub>0.1</sub>TiO<sub>3</sub> and Sr<sub>0.25</sub>Ca<sub>0.25</sub>Na<sub>0.25</sub>Pr<sub>0.25</sub>TiO<sub>3</sub> Ceramic Powders for Water Purification |
| title_full | Evaluation of Photocatalytic Performance of Nano-Sized Sr<sub>0.9</sub>La<sub>0.1</sub>TiO<sub>3</sub> and Sr<sub>0.25</sub>Ca<sub>0.25</sub>Na<sub>0.25</sub>Pr<sub>0.25</sub>TiO<sub>3</sub> Ceramic Powders for Water Purification |
| title_fullStr | Evaluation of Photocatalytic Performance of Nano-Sized Sr<sub>0.9</sub>La<sub>0.1</sub>TiO<sub>3</sub> and Sr<sub>0.25</sub>Ca<sub>0.25</sub>Na<sub>0.25</sub>Pr<sub>0.25</sub>TiO<sub>3</sub> Ceramic Powders for Water Purification |
| title_full_unstemmed | Evaluation of Photocatalytic Performance of Nano-Sized Sr<sub>0.9</sub>La<sub>0.1</sub>TiO<sub>3</sub> and Sr<sub>0.25</sub>Ca<sub>0.25</sub>Na<sub>0.25</sub>Pr<sub>0.25</sub>TiO<sub>3</sub> Ceramic Powders for Water Purification |
| title_short | Evaluation of Photocatalytic Performance of Nano-Sized Sr<sub>0.9</sub>La<sub>0.1</sub>TiO<sub>3</sub> and Sr<sub>0.25</sub>Ca<sub>0.25</sub>Na<sub>0.25</sub>Pr<sub>0.25</sub>TiO<sub>3</sub> Ceramic Powders for Water Purification |
| title_sort | evaluation of photocatalytic performance of nano sized sr sub 0 9 sub la sub 0 1 sub tio sub 3 sub and sr sub 0 25 sub ca sub 0 25 sub na sub 0 25 sub pr sub 0 25 sub tio sub 3 sub ceramic powders for water purification |
| topic | UV degradation pharmaceuticals pindolol application nanomaterials |
| url | https://www.mdpi.com/2079-4991/12/23/4193 |
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