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Nanomaterials (Basel, Switzerland)
Nov 23, 2020;10 (11):

Novel Pt-AgPO/CdS/Chitosan Nanocomposite with Enhanced Photocatalytic and Biological Activities.

Mahsa Kiani, Mojtaba Bagherzadeh, Reyhaneh Kaveh, Navid Rabiee, Yousef Fatahi, Rassoul Dinarvand, Ho Won Jang, Mohammadreza Shokouhimehr, Rajender S Varma
Author Information
  1. Mahsa Kiani: Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran 14155-6451, Iran.
  2. Mojtaba Bagherzadeh: Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran 14155-6451, Iran.
  3. Reyhaneh Kaveh: Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran 14155-6451, Iran.
  4. Navid Rabiee: Department of Chemistry, Sharif University of Technology, P.O. Box 11155-3516, Tehran 14155-6451, Iran. ORCID
  5. Yousef Fatahi: Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 14155-6451, Iran. ORCID
  6. Rassoul Dinarvand: Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran 14155-6451, Iran. ORCID
  7. Ho Won Jang: Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Korea. ORCID
  8. Mohammadreza Shokouhimehr: Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Korea. ORCID
  9. Rajender S Varma: Regional Center of Advanced Technologies and Materials, Palacky University, Šlechtitelů 27, 78371 Olomouc, Czech Republic. ORCID
PMID: 33238536 DOI: 10.3390/nano10112320

Abstract

Decorating photocatalysts with noble metal nanoparticles (e.g., Pt) often increases the catalysts' photocatalytic activity and biomedical properties. Here, a simple and inexpensive method has been developed to prepare a Pt-AgPO/CdS/chitosan composite, which was characterized and used for the visible light-induced photocatalytic and antibacterial studies. This synthesized composite showed superior photocatalytic activity for methylene blue degradation as a hazardous pollutant (the maximum dye degradation was observed in 90 min of treatment) and killing of Gram positive bacterial ( and ) as well as Gram negative bacteria (, , , and ) under visible light irradiation. The antibacterial activity of CdS, CdS/AgPO, and Pt-AgPO/CdS/chitosan against , , , , , and showed the zone of inhibition (mm) under visible light and under dark conditions at a concentration of 20 µg mL. Furthermore, the cell viability of the CdS/chitosan, AgPO, AgPO/CdS/chitosan, and Pt-AgPO/CdS/chitosan were investigated on the human embryonic kidney 293 cells (HEK-293), Henrietta Lacks (HeLa), human liver cancer cell line (HepG2), and pheochromocytoma (PC12) cell lines. In addition, the results indicated that the photodegradation rate for Pt-AgPO/CdS/chitosan is 3.53 times higher than that of CdS and 1.73 times higher than that of the CdS/AgPO composite. Moreover, Pt-AgPO/CdS/chitosan with an optimal amount of CdS killed large areas of different bacteria and different cells separately in a shorter time period under visible-light irradiation, which shows significantly higher efficiency than pure CdS and other CdS/AgPO composites. The superb performances of this composite are attributed to its privileged properties, such as retarded recombination of photoinduced electron/hole pairs and a large specific surface area, making Pt-AgPO/CdS/chitosan a valuable composite that can be deployed for a range of important applications, such as visible light-induced photocatalysis and antibacterial activity.

Keywords

Pt-Ag3PO4/CdS/chitosan antibacterial activity cytotoxicity photocatalytic activity visible light

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