Preparation of high-crystalline and non-metal modified g-C3N4 for improving ultrasound-accelerated white-LED-light-driven photocatalytic performances
Abstract As a non-metallic organic semiconductor, graphitic carbon nitride (g-C3N4) has received much attention due to its unique physicochemical properties. However, the photocatalytic activity of this semiconductor faces challenges due to factors such as low electronic conductivity and limited act...
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| Format: | Article |
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Nature Portfolio
2023-09-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-41473-y |
| _version_ | 1797452533240692736 |
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| author | Abdolreza Tarighati Sareshkeh Mir Saeed Seyed Dorraji Zhaleh Karami Saeedeh Shahmoradi Elnaz Fekri Hoda Daneshvar Mohammad Hossein Rasoulifard Denis N. Karimov |
| author_facet | Abdolreza Tarighati Sareshkeh Mir Saeed Seyed Dorraji Zhaleh Karami Saeedeh Shahmoradi Elnaz Fekri Hoda Daneshvar Mohammad Hossein Rasoulifard Denis N. Karimov |
| author_sort | Abdolreza Tarighati Sareshkeh |
| collection | DOAJ |
| description | Abstract As a non-metallic organic semiconductor, graphitic carbon nitride (g-C3N4) has received much attention due to its unique physicochemical properties. However, the photocatalytic activity of this semiconductor faces challenges due to factors such as low electronic conductivity and limited active sites provided on its surface. The morphology and structure of g-C3N4, including macro/micro morphology, crystal structure and electronic structure can affect its catalytic activity. Non-metallic heteroatom doping is considered as an effective method to tune the optical, electronic and other physicochemical properties of g-C3N4. Here, we synthesized non-metal-doped highly crystalline g-C3N4 by one-pot calcination method, which enhanced the photocatalytic activity of g-C3N4 such as mesoporous nature, reduced band gap, wide-range photousability, improved charge carrier recombination, and the electrical conductivity was improved. Hence, the use of low-power white-LED-light illumination (λ ≥ 420 nm) and ultrasound (US) irradiation synergistically engendered the Methylene Blue (MB) mineralization efficiency elevated to 100% within 120 min by following the pseudo-first-order mechanism under the following condition (i.e., pH 11, 0.75 g L−1 of O-doped g-C3N4 and S-doped g-C3N4, 20 mg L−1 MB, 0.25 ml s−1 O2, and spontaneous raising temperature). In addition, the rapid removal of MB by sonophotocatalysis was 4 times higher than that of primary photocatalysis. And radical scavenging experiments showed that the maximum distribution of active species corresponds to superoxide radical $${\mathrm{O}}_{2}^{\cdot-}$$ O 2 · - . More importantly, the sonophotocatalytic degradation ability of O-doped g-C3N4 and S-doped g-C3N4 was remarkably sustained even after the sixth consecutive run. |
| first_indexed | 2024-03-09T15:10:04Z |
| format | Article |
| id | doaj.art-ac013239ebb343299c44061158a2cf8a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-09T15:10:04Z |
| publishDate | 2023-09-01 |
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| series | Scientific Reports |
| spelling | doaj.art-ac013239ebb343299c44061158a2cf8a2023-11-26T13:25:31ZengNature PortfolioScientific Reports2045-23222023-09-0113111610.1038/s41598-023-41473-yPreparation of high-crystalline and non-metal modified g-C3N4 for improving ultrasound-accelerated white-LED-light-driven photocatalytic performancesAbdolreza Tarighati Sareshkeh0Mir Saeed Seyed Dorraji1Zhaleh Karami2Saeedeh Shahmoradi3Elnaz Fekri4Hoda Daneshvar5Mohammad Hossein Rasoulifard6Denis N. Karimov7Applied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of ZanjanApplied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of ZanjanApplied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of ZanjanApplied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of ZanjanApplied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of ZanjanApplied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of ZanjanApplied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of ZanjanFederal Scientific Research Center “Crystallography and Photonics”, Russian Academy of SciencesAbstract As a non-metallic organic semiconductor, graphitic carbon nitride (g-C3N4) has received much attention due to its unique physicochemical properties. However, the photocatalytic activity of this semiconductor faces challenges due to factors such as low electronic conductivity and limited active sites provided on its surface. The morphology and structure of g-C3N4, including macro/micro morphology, crystal structure and electronic structure can affect its catalytic activity. Non-metallic heteroatom doping is considered as an effective method to tune the optical, electronic and other physicochemical properties of g-C3N4. Here, we synthesized non-metal-doped highly crystalline g-C3N4 by one-pot calcination method, which enhanced the photocatalytic activity of g-C3N4 such as mesoporous nature, reduced band gap, wide-range photousability, improved charge carrier recombination, and the electrical conductivity was improved. Hence, the use of low-power white-LED-light illumination (λ ≥ 420 nm) and ultrasound (US) irradiation synergistically engendered the Methylene Blue (MB) mineralization efficiency elevated to 100% within 120 min by following the pseudo-first-order mechanism under the following condition (i.e., pH 11, 0.75 g L−1 of O-doped g-C3N4 and S-doped g-C3N4, 20 mg L−1 MB, 0.25 ml s−1 O2, and spontaneous raising temperature). In addition, the rapid removal of MB by sonophotocatalysis was 4 times higher than that of primary photocatalysis. And radical scavenging experiments showed that the maximum distribution of active species corresponds to superoxide radical $${\mathrm{O}}_{2}^{\cdot-}$$ O 2 · - . More importantly, the sonophotocatalytic degradation ability of O-doped g-C3N4 and S-doped g-C3N4 was remarkably sustained even after the sixth consecutive run.https://doi.org/10.1038/s41598-023-41473-y |
| spellingShingle | Abdolreza Tarighati Sareshkeh Mir Saeed Seyed Dorraji Zhaleh Karami Saeedeh Shahmoradi Elnaz Fekri Hoda Daneshvar Mohammad Hossein Rasoulifard Denis N. Karimov Preparation of high-crystalline and non-metal modified g-C3N4 for improving ultrasound-accelerated white-LED-light-driven photocatalytic performances Scientific Reports |
| title | Preparation of high-crystalline and non-metal modified g-C3N4 for improving ultrasound-accelerated white-LED-light-driven photocatalytic performances |
| title_full | Preparation of high-crystalline and non-metal modified g-C3N4 for improving ultrasound-accelerated white-LED-light-driven photocatalytic performances |
| title_fullStr | Preparation of high-crystalline and non-metal modified g-C3N4 for improving ultrasound-accelerated white-LED-light-driven photocatalytic performances |
| title_full_unstemmed | Preparation of high-crystalline and non-metal modified g-C3N4 for improving ultrasound-accelerated white-LED-light-driven photocatalytic performances |
| title_short | Preparation of high-crystalline and non-metal modified g-C3N4 for improving ultrasound-accelerated white-LED-light-driven photocatalytic performances |
| title_sort | preparation of high crystalline and non metal modified g c3n4 for improving ultrasound accelerated white led light driven photocatalytic performances |
| url | https://doi.org/10.1038/s41598-023-41473-y |
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