Evaluation of photocatalytic activity of commercial red phosphorus towards the disinfection of E. coli and reduction of Cr (VI) under direct sunlight
Elemental photocatalysts are getting the attention of material scientists as a new class of visible light photocatalysts in recent years. Hence it is important to understand and evaluate their phtocatalytic activity for the rationale design and development of new catalysts at low cost. In this regar...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/abbdeb |
| _version_ | 1797746885833785344 |
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| author | T K Athira M Roshith R Kadrekar A Arya Megha S Kumar Gopalraman Anantharaj Lakshmiprasad Gurrala Vijayaraghavan Saranyan Satheesh Babu T G V Ravi Kumar Darbha |
| author_facet | T K Athira M Roshith R Kadrekar A Arya Megha S Kumar Gopalraman Anantharaj Lakshmiprasad Gurrala Vijayaraghavan Saranyan Satheesh Babu T G V Ravi Kumar Darbha |
| author_sort | T K Athira |
| collection | DOAJ |
| description | Elemental photocatalysts are getting the attention of material scientists as a new class of visible light photocatalysts in recent years. Hence it is important to understand and evaluate their phtocatalytic activity for the rationale design and development of new catalysts at low cost. In this regard, we choose commercial red phosphorus as elemental photocatalyst and we evaluate its activity towards the disinfection of E. coli and reduction of Cr (VI) under natural sunlight. The measured bandgap of red phosphorus is 2.0 eV matches with theoretical value and indicates the suitability of the material as photocatalyst under direct sunlight. Moreover, red phosphorus also has optimum valence and conduction band levels for the successful photo-generation of reactive oxygen species (ROS). These photogenerated ROS could help to achieve the disinfection of E. coli in 50 min. In the case of photocatalytic reduction of Cr (VI), 98% of Cr (VI) reduction has been achieved is in 60 min at pH 2. The rate of Cr (VI) reduction decreases with an increase in pH value similar to the reports with other metal oxide photocatalysts. |
| first_indexed | 2024-03-12T15:43:12Z |
| format | Article |
| id | doaj.art-7dddac1593104eca8f2c1a7dd0217740 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:43:12Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-7dddac1593104eca8f2c1a7dd02177402023-08-09T15:51:52ZengIOP PublishingMaterials Research Express2053-15912020-01-0171010400210.1088/2053-1591/abbdebEvaluation of photocatalytic activity of commercial red phosphorus towards the disinfection of E. coli and reduction of Cr (VI) under direct sunlightT K Athira0M Roshith1R Kadrekar2https://orcid.org/0000-0003-0403-2408A Arya3Megha S Kumar4Gopalraman Anantharaj5Lakshmiprasad Gurrala6https://orcid.org/0000-0003-0109-7169Vijayaraghavan Saranyan7Satheesh Babu T G8V Ravi Kumar Darbha9https://orcid.org/0000-0002-6389-0202Department of Sciences, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, IndiaDepartment of Sciences, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, IndiaMaterial Science Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, IndiaMaterial Science Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, IndiaDepartment of Sciences, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, IndiaCorrosion and Materials Protection Division, CSIR-Central Electrochemical Research Institute Karaikudi-630003, IndiaDepartment of Chemical Engineering, Indian Institute of Technology Madras, Chennai, 600036, IndiaCorrosion and Materials Protection Division, CSIR-Central Electrochemical Research Institute Karaikudi-630003, IndiaDepartment of Sciences, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, IndiaDepartment of Sciences, Amrita School of Engineering, Coimbatore, Amrita Vishwa Vidyapeetham, India; Department of Chemistry, Amrita School of Engineering, Chennai, Amrita Vishwa Vidyapeetham, IndiaElemental photocatalysts are getting the attention of material scientists as a new class of visible light photocatalysts in recent years. Hence it is important to understand and evaluate their phtocatalytic activity for the rationale design and development of new catalysts at low cost. In this regard, we choose commercial red phosphorus as elemental photocatalyst and we evaluate its activity towards the disinfection of E. coli and reduction of Cr (VI) under natural sunlight. The measured bandgap of red phosphorus is 2.0 eV matches with theoretical value and indicates the suitability of the material as photocatalyst under direct sunlight. Moreover, red phosphorus also has optimum valence and conduction band levels for the successful photo-generation of reactive oxygen species (ROS). These photogenerated ROS could help to achieve the disinfection of E. coli in 50 min. In the case of photocatalytic reduction of Cr (VI), 98% of Cr (VI) reduction has been achieved is in 60 min at pH 2. The rate of Cr (VI) reduction decreases with an increase in pH value similar to the reports with other metal oxide photocatalysts.https://doi.org/10.1088/2053-1591/abbdebvisible light photocatalysisphotocatalytic reduction of Cr (VI)red phosphorusreactive oxygen species (ROS)photocatalytic disinfection |
| spellingShingle | T K Athira M Roshith R Kadrekar A Arya Megha S Kumar Gopalraman Anantharaj Lakshmiprasad Gurrala Vijayaraghavan Saranyan Satheesh Babu T G V Ravi Kumar Darbha Evaluation of photocatalytic activity of commercial red phosphorus towards the disinfection of E. coli and reduction of Cr (VI) under direct sunlight Materials Research Express visible light photocatalysis photocatalytic reduction of Cr (VI) red phosphorus reactive oxygen species (ROS) photocatalytic disinfection |
| title | Evaluation of photocatalytic activity of commercial red phosphorus towards the disinfection of E. coli and reduction of Cr (VI) under direct sunlight |
| title_full | Evaluation of photocatalytic activity of commercial red phosphorus towards the disinfection of E. coli and reduction of Cr (VI) under direct sunlight |
| title_fullStr | Evaluation of photocatalytic activity of commercial red phosphorus towards the disinfection of E. coli and reduction of Cr (VI) under direct sunlight |
| title_full_unstemmed | Evaluation of photocatalytic activity of commercial red phosphorus towards the disinfection of E. coli and reduction of Cr (VI) under direct sunlight |
| title_short | Evaluation of photocatalytic activity of commercial red phosphorus towards the disinfection of E. coli and reduction of Cr (VI) under direct sunlight |
| title_sort | evaluation of photocatalytic activity of commercial red phosphorus towards the disinfection of e coli and reduction of cr vi under direct sunlight |
| topic | visible light photocatalysis photocatalytic reduction of Cr (VI) red phosphorus reactive oxygen species (ROS) photocatalytic disinfection |
| url | https://doi.org/10.1088/2053-1591/abbdeb |
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