Vitamin B5 copper conjugated triazine dendrimer improved the visible-light photocatalytic activity of TiO2 nanoparticles for aerobic homocoupling reactions
Abstract In this work, Cu-vitamin B5 (pantothenic acid) bonded to 2,4,6-trichloro-1,3,5-triazine produced a bioconjugated dendrimer giving rise to the visible-light photocatalytic activity of nanocrystalline TiO2. XPS spectra uncovered the coexistence of Cu(II)/Cu(I) oxidation states with a predomin...
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Nature Portfolio
2024-02-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-52339-2 |
| _version_ | 1797274863109406720 |
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| author | Samira Zamenraz Maasoumeh Jafarpour Ameneh Eskandari Abdolreza Rezaeifard |
| author_facet | Samira Zamenraz Maasoumeh Jafarpour Ameneh Eskandari Abdolreza Rezaeifard |
| author_sort | Samira Zamenraz |
| collection | DOAJ |
| description | Abstract In this work, Cu-vitamin B5 (pantothenic acid) bonded to 2,4,6-trichloro-1,3,5-triazine produced a bioconjugated dendrimer giving rise to the visible-light photocatalytic activity of nanocrystalline TiO2. XPS spectra uncovered the coexistence of Cu(II)/Cu(I) oxidation states with a predominant contribution of Cu(I). The new heterogeneous bio-relevant Cu-photocatalyst (Cu(I) Cu(II) [PTAPA G2-B5] @TiO2) revealed a band gap value [Eg = (2.8 eV)] less than those of Cu free components [PTAPA G1-B5]@TiO2 (3.04) and [PTAPA G2-B5]@TiO2 (3.06) and particularly the bare TiO2 (3.15 eV). The reactions showed to be light-dependent with the best performance under room light bulbs. The photocatalytic efficiency of the as-prepared heterojunction photocatalyst was exploited in the aerobic Csp 2–Csp 2 homocoupling of phenylboronic acid and Csp–Csp homocoupling of phenyl acetylenes under visible-light irradiation to prepare structurally and electronically different biaryls. A radical pathway relying on the photogenerated e− and h+ and involving the Cu(I)–Cu(II) synergistic cooperation was postulated. The reusability and stability of the catalyst were verified by the recycling test, FT-IR spectra, and ICP-OES analysis. |
| first_indexed | 2024-03-07T15:04:14Z |
| format | Article |
| id | doaj.art-60f04458ed984ee7b9cbb9d76bc1e654 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-07T15:04:14Z |
| publishDate | 2024-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-60f04458ed984ee7b9cbb9d76bc1e6542024-03-05T18:58:30ZengNature PortfolioScientific Reports2045-23222024-02-0114111110.1038/s41598-024-52339-2Vitamin B5 copper conjugated triazine dendrimer improved the visible-light photocatalytic activity of TiO2 nanoparticles for aerobic homocoupling reactionsSamira Zamenraz0Maasoumeh Jafarpour1Ameneh Eskandari2Abdolreza Rezaeifard3Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of BirjandCatalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of BirjandCatalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of BirjandCatalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of BirjandAbstract In this work, Cu-vitamin B5 (pantothenic acid) bonded to 2,4,6-trichloro-1,3,5-triazine produced a bioconjugated dendrimer giving rise to the visible-light photocatalytic activity of nanocrystalline TiO2. XPS spectra uncovered the coexistence of Cu(II)/Cu(I) oxidation states with a predominant contribution of Cu(I). The new heterogeneous bio-relevant Cu-photocatalyst (Cu(I) Cu(II) [PTAPA G2-B5] @TiO2) revealed a band gap value [Eg = (2.8 eV)] less than those of Cu free components [PTAPA G1-B5]@TiO2 (3.04) and [PTAPA G2-B5]@TiO2 (3.06) and particularly the bare TiO2 (3.15 eV). The reactions showed to be light-dependent with the best performance under room light bulbs. The photocatalytic efficiency of the as-prepared heterojunction photocatalyst was exploited in the aerobic Csp 2–Csp 2 homocoupling of phenylboronic acid and Csp–Csp homocoupling of phenyl acetylenes under visible-light irradiation to prepare structurally and electronically different biaryls. A radical pathway relying on the photogenerated e− and h+ and involving the Cu(I)–Cu(II) synergistic cooperation was postulated. The reusability and stability of the catalyst were verified by the recycling test, FT-IR spectra, and ICP-OES analysis.https://doi.org/10.1038/s41598-024-52339-2 |
| spellingShingle | Samira Zamenraz Maasoumeh Jafarpour Ameneh Eskandari Abdolreza Rezaeifard Vitamin B5 copper conjugated triazine dendrimer improved the visible-light photocatalytic activity of TiO2 nanoparticles for aerobic homocoupling reactions Scientific Reports |
| title | Vitamin B5 copper conjugated triazine dendrimer improved the visible-light photocatalytic activity of TiO2 nanoparticles for aerobic homocoupling reactions |
| title_full | Vitamin B5 copper conjugated triazine dendrimer improved the visible-light photocatalytic activity of TiO2 nanoparticles for aerobic homocoupling reactions |
| title_fullStr | Vitamin B5 copper conjugated triazine dendrimer improved the visible-light photocatalytic activity of TiO2 nanoparticles for aerobic homocoupling reactions |
| title_full_unstemmed | Vitamin B5 copper conjugated triazine dendrimer improved the visible-light photocatalytic activity of TiO2 nanoparticles for aerobic homocoupling reactions |
| title_short | Vitamin B5 copper conjugated triazine dendrimer improved the visible-light photocatalytic activity of TiO2 nanoparticles for aerobic homocoupling reactions |
| title_sort | vitamin b5 copper conjugated triazine dendrimer improved the visible light photocatalytic activity of tio2 nanoparticles for aerobic homocoupling reactions |
| url | https://doi.org/10.1038/s41598-024-52339-2 |
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