Photocatalytic Degradation of Organic Dyes and Antimicrobial Activities by Polyaniline–Nitrogen-Doped Carbon Dot Nanocomposite
Nitrogen-doped carbon nanodots (N@CDs) were prepared by hydrothermal processing of bovine serum albumin (Mw: 69,324 with 607 amino acids). A polyaniline (PANI-N@CDs) nanocomposite was then synthesized by ultrasonication and used to degrade Congo red (CR), methylene blue (MB), Rhodamine B (RhB), and...
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MDPI AG
2021-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/5/1128 |
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| author | Moorthy Maruthapandi Arumugam Saravanan Priyanka Manohar John H. T. Luong Aharon Gedanken |
| author_facet | Moorthy Maruthapandi Arumugam Saravanan Priyanka Manohar John H. T. Luong Aharon Gedanken |
| author_sort | Moorthy Maruthapandi |
| collection | DOAJ |
| description | Nitrogen-doped carbon nanodots (N@CDs) were prepared by hydrothermal processing of bovine serum albumin (Mw: 69,324 with 607 amino acids). A polyaniline (PANI-N@CDs) nanocomposite was then synthesized by ultrasonication and used to degrade Congo red (CR), methylene blue (MB), Rhodamine B (RhB), and crystal violet (CV) four common organic dyes. The PANI-N@CD nanocomposite simultaneously adsorbed and concentrated the dye from the bulk solution and degraded the adsorbed dye, resulting in a high rate of dye degradation. The combination of holes (h+), hydroxyl (OH<sup>•</sup>), and O<sub>2</sub><sup>•−</sup> was involved in the N@CD-mediated photocatalytic degradation of the dyes. Under visible light illumination at neutral pH, the PANI-N@CDs were proven as an efficient adsorbent and photocatalyst for the complete degradation of CR within 20 min. MB and RhB were also degraded but required longer treatment times. These findings supported the design of remediation processes for such dyes and predicted their fate in the environment. The nanocomposite also exhibited antimicrobial activities against Gram-negative bacterium <i>E. coli</i> and Gram-positive bacterium <i>S. aureus</i>. |
| first_indexed | 2024-03-10T11:56:06Z |
| format | Article |
| id | doaj.art-87020d670a834588bddd0fcf24e7e655 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T11:56:06Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-87020d670a834588bddd0fcf24e7e6552023-11-21T17:19:32ZengMDPI AGNanomaterials2079-49912021-04-01115112810.3390/nano11051128Photocatalytic Degradation of Organic Dyes and Antimicrobial Activities by Polyaniline–Nitrogen-Doped Carbon Dot NanocompositeMoorthy Maruthapandi0Arumugam Saravanan1Priyanka Manohar2John H. T. Luong3Aharon Gedanken4Department of Chemistry, Bar-Ilan Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, IsraelDepartment of Chemistry, Bar-Ilan Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, IsraelDepartment of Chemistry, School of Chemical and Biotechnology, Sastra University, Thanjavur 612001, IndiaSchool of Chemistry, University College Cork, T12 YN60 Cork, IrelandDepartment of Chemistry, Bar-Ilan Institute for Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat-Gan 52900, IsraelNitrogen-doped carbon nanodots (N@CDs) were prepared by hydrothermal processing of bovine serum albumin (Mw: 69,324 with 607 amino acids). A polyaniline (PANI-N@CDs) nanocomposite was then synthesized by ultrasonication and used to degrade Congo red (CR), methylene blue (MB), Rhodamine B (RhB), and crystal violet (CV) four common organic dyes. The PANI-N@CD nanocomposite simultaneously adsorbed and concentrated the dye from the bulk solution and degraded the adsorbed dye, resulting in a high rate of dye degradation. The combination of holes (h+), hydroxyl (OH<sup>•</sup>), and O<sub>2</sub><sup>•−</sup> was involved in the N@CD-mediated photocatalytic degradation of the dyes. Under visible light illumination at neutral pH, the PANI-N@CDs were proven as an efficient adsorbent and photocatalyst for the complete degradation of CR within 20 min. MB and RhB were also degraded but required longer treatment times. These findings supported the design of remediation processes for such dyes and predicted their fate in the environment. The nanocomposite also exhibited antimicrobial activities against Gram-negative bacterium <i>E. coli</i> and Gram-positive bacterium <i>S. aureus</i>.https://www.mdpi.com/2079-4991/11/5/1128PANI-N@CDsnanocompositesonochemical methoddye degradationantimicrobial activity |
| spellingShingle | Moorthy Maruthapandi Arumugam Saravanan Priyanka Manohar John H. T. Luong Aharon Gedanken Photocatalytic Degradation of Organic Dyes and Antimicrobial Activities by Polyaniline–Nitrogen-Doped Carbon Dot Nanocomposite Nanomaterials PANI-N@CDs nanocomposite sonochemical method dye degradation antimicrobial activity |
| title | Photocatalytic Degradation of Organic Dyes and Antimicrobial Activities by Polyaniline–Nitrogen-Doped Carbon Dot Nanocomposite |
| title_full | Photocatalytic Degradation of Organic Dyes and Antimicrobial Activities by Polyaniline–Nitrogen-Doped Carbon Dot Nanocomposite |
| title_fullStr | Photocatalytic Degradation of Organic Dyes and Antimicrobial Activities by Polyaniline–Nitrogen-Doped Carbon Dot Nanocomposite |
| title_full_unstemmed | Photocatalytic Degradation of Organic Dyes and Antimicrobial Activities by Polyaniline–Nitrogen-Doped Carbon Dot Nanocomposite |
| title_short | Photocatalytic Degradation of Organic Dyes and Antimicrobial Activities by Polyaniline–Nitrogen-Doped Carbon Dot Nanocomposite |
| title_sort | photocatalytic degradation of organic dyes and antimicrobial activities by polyaniline nitrogen doped carbon dot nanocomposite |
| topic | PANI-N@CDs nanocomposite sonochemical method dye degradation antimicrobial activity |
| url | https://www.mdpi.com/2079-4991/11/5/1128 |
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