Synthesis and characterization of bismuth gadolinium oxide/g-C3N4 heterojunction nano photocatalyst for efficient sunlight-driven purification of wastewater containing malachite green dye
In this research, considering the problem of water pollution, efficient bismuthate nanostructures have been designed to destroy organic pollutants; and in the following, suitable strategies to improve the photocatalytic efficiency have been presented and analyzed. In this regard, BiGdO3 nanoparticle...
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Elsevier
2025-06-01
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| Series: | Energy Nexus |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S277242712500083X |
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| author | Shokofeh Mirzasani Movlud Valian Ahmad Akbari Forat H. Alsultany Masoud Salavati-Niasari |
| author_facet | Shokofeh Mirzasani Movlud Valian Ahmad Akbari Forat H. Alsultany Masoud Salavati-Niasari |
| author_sort | Shokofeh Mirzasani |
| collection | DOAJ |
| description | In this research, considering the problem of water pollution, efficient bismuthate nanostructures have been designed to destroy organic pollutants; and in the following, suitable strategies to improve the photocatalytic efficiency have been presented and analyzed. In this regard, BiGdO3 nanoparticles were prepared by auto-combustion route using sucrose as fuel. A series of techniques including X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), Fourier Transform Infrared Spectroscopy (FT-IR), Brunauer–Emmett–Teller (BET), Diffuse Reflectance Spectroscopy (DRS) to analyze the morphology, phase purity and optical properties of BiGdO3 (BGO) samples are employed. Then, the obtained bismuthate nanostructures with an average size of 34.84 nm are used to form BiGdO3/g-C3N4 (BGO/CN) nanocomposites with different content. According to BET analysis, the specific surface area of BGO/CN nanocomposites was found as 5.18 m2g−1. According to DRS data, the BGO band gap (2.78 eV) decreases to 2.45 eV with CN incorporation. The obtained pure BGO nanostructures are studied in malachite green (MG) decomposition. Under optimal conditions , 0.10 g BGO degrades 97.27 % of 20 ppm MG. To investigate the photocatalytic ability of nanocomposites and to improve the use of sunlight, a comparative study is conducted between the light sources. Experimental results show that BGO/CN nanocomposites show higher pho tocatalytic activity (98.36 %) than pure BiGdO3 and g-C3N4. In addition, the photodegradation mechanism of BGO/CN by scavenging experiments introduces •OH active radicals as the main factor in the photocatalytic process. |
| format | Article |
| id | doaj-art-c40afbc60d7c43d5b365dacee69c6405 |
| institution | Kabale University |
| issn | 2772-4271 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Nexus |
| spelling | doaj-art-c40afbc60d7c43d5b365dacee69c64052025-08-20T03:31:24ZengElsevierEnergy Nexus2772-42712025-06-011810044210.1016/j.nexus.2025.100442Synthesis and characterization of bismuth gadolinium oxide/g-C3N4 heterojunction nano photocatalyst for efficient sunlight-driven purification of wastewater containing malachite green dyeShokofeh Mirzasani0Movlud Valian1Ahmad Akbari2Forat H. Alsultany3Masoud Salavati-Niasari4Institute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Republic of IranInstitute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Republic of IranInstitute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Republic of Iran; Corresponding authors.Department of Medical Physics, College of Sciences, Al-Mustaqbal University, 51001, Babylon, IraqInstitute of Nano Science and Nano Technology, University of Kashan, P.O. Box 87317-51167, Kashan, Islamic Republic of Iran; Corresponding authors.In this research, considering the problem of water pollution, efficient bismuthate nanostructures have been designed to destroy organic pollutants; and in the following, suitable strategies to improve the photocatalytic efficiency have been presented and analyzed. In this regard, BiGdO3 nanoparticles were prepared by auto-combustion route using sucrose as fuel. A series of techniques including X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), Fourier Transform Infrared Spectroscopy (FT-IR), Brunauer–Emmett–Teller (BET), Diffuse Reflectance Spectroscopy (DRS) to analyze the morphology, phase purity and optical properties of BiGdO3 (BGO) samples are employed. Then, the obtained bismuthate nanostructures with an average size of 34.84 nm are used to form BiGdO3/g-C3N4 (BGO/CN) nanocomposites with different content. According to BET analysis, the specific surface area of BGO/CN nanocomposites was found as 5.18 m2g−1. According to DRS data, the BGO band gap (2.78 eV) decreases to 2.45 eV with CN incorporation. The obtained pure BGO nanostructures are studied in malachite green (MG) decomposition. Under optimal conditions , 0.10 g BGO degrades 97.27 % of 20 ppm MG. To investigate the photocatalytic ability of nanocomposites and to improve the use of sunlight, a comparative study is conducted between the light sources. Experimental results show that BGO/CN nanocomposites show higher pho tocatalytic activity (98.36 %) than pure BiGdO3 and g-C3N4. In addition, the photodegradation mechanism of BGO/CN by scavenging experiments introduces •OH active radicals as the main factor in the photocatalytic process.http://www.sciencedirect.com/science/article/pii/S277242712500083XBiGdO3/g-C3N4 NanocompositeDyesHeterojunctionNanostructuresCombustionNano-Photocatalyst |
| spellingShingle | Shokofeh Mirzasani Movlud Valian Ahmad Akbari Forat H. Alsultany Masoud Salavati-Niasari Synthesis and characterization of bismuth gadolinium oxide/g-C3N4 heterojunction nano photocatalyst for efficient sunlight-driven purification of wastewater containing malachite green dye Energy Nexus BiGdO3/g-C3N4 Nanocomposite Dyes Heterojunction Nanostructures Combustion Nano-Photocatalyst |
| title | Synthesis and characterization of bismuth gadolinium oxide/g-C3N4 heterojunction nano photocatalyst for efficient sunlight-driven purification of wastewater containing malachite green dye |
| title_full | Synthesis and characterization of bismuth gadolinium oxide/g-C3N4 heterojunction nano photocatalyst for efficient sunlight-driven purification of wastewater containing malachite green dye |
| title_fullStr | Synthesis and characterization of bismuth gadolinium oxide/g-C3N4 heterojunction nano photocatalyst for efficient sunlight-driven purification of wastewater containing malachite green dye |
| title_full_unstemmed | Synthesis and characterization of bismuth gadolinium oxide/g-C3N4 heterojunction nano photocatalyst for efficient sunlight-driven purification of wastewater containing malachite green dye |
| title_short | Synthesis and characterization of bismuth gadolinium oxide/g-C3N4 heterojunction nano photocatalyst for efficient sunlight-driven purification of wastewater containing malachite green dye |
| title_sort | synthesis and characterization of bismuth gadolinium oxide g c3n4 heterojunction nano photocatalyst for efficient sunlight driven purification of wastewater containing malachite green dye |
| topic | BiGdO3/g-C3N4 Nanocomposite Dyes Heterojunction Nanostructures Combustion Nano-Photocatalyst |
| url | http://www.sciencedirect.com/science/article/pii/S277242712500083X |
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