Sunlight-active Bi2O2(OH)(NO3)-AgBr photocatalyst for degradation of Rhodamine B (RhB) dye and disinfection of E. coli bacteria
A sunlight-driven Bi2O2(OH)(NO3)-AgBr heterostructure photocatalyst (denoted as BiON-AgBr) was synthesized by a two-step route combining hydrothermal and chemical precipitation methods. Firstly, the pristine BiON was prepared, via two types of solvent, by using a hydrothermal method. In the case tha...
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| Language: | English |
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Elsevier
2025-07-01
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| Series: | OpenNano |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352952025000180 |
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| author | Ruethaithip Dulyasucharit Laksanawadee Saikhao Sutthidech Preecharram Nutthachai Prongmanee Wipada Chaiyachet Orapan Intharaksa Suwat Nanan |
| author_facet | Ruethaithip Dulyasucharit Laksanawadee Saikhao Sutthidech Preecharram Nutthachai Prongmanee Wipada Chaiyachet Orapan Intharaksa Suwat Nanan |
| author_sort | Ruethaithip Dulyasucharit |
| collection | DOAJ |
| description | A sunlight-driven Bi2O2(OH)(NO3)-AgBr heterostructure photocatalyst (denoted as BiON-AgBr) was synthesized by a two-step route combining hydrothermal and chemical precipitation methods. Firstly, the pristine BiON was prepared, via two types of solvent, by using a hydrothermal method. In the case that water was used as a solvent, the BiON.W photocatalyst with a pine-like structure was obtained. However, by using mixed solvent (comprising ethanol: water of 20:80), the BiON.M photocatalyst with a flower-like morphology was achieved. Secondly, the binary BiON-AgBr heterostructure was then constructed using a chemical precipitation technique. Accordingly, the photocatalytic performance of the prepared BiON-AgBr photocatalyst was evaluated through the photodegradation of Rhodamine B (RhB) dye under natural sunlight irradiation. The synthesized BiON-AgBr photocatalyst still exhibits high photocatalytic efficiency, even after three consecutive cycles of use. Trapping experiment revealed that the superoxide anion radicals (•O₂⁻) play the most important role in RhB removal. The result suggested a Z-scheme mechanism based on AgBr/Ag/BiON. The formation of metallic silver (Ag0), upon sunlight illumination, was proved as the evidence shown in the XRD pattern of the used photocatalyst. The synergistic effect of the Z-scheme heterojunction and the surface plasmon resonance (SPR) of silver metal results in the considerable enhancement of the sunlight-driven photodegradation of RhB dye and the remarkable improvement of the disinfection of E. coli bacteria. |
| format | Article |
| id | doaj-art-8ea4922bca3f495cb16a41fa50993d2c |
| institution | Kabale University |
| issn | 2352-9520 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | OpenNano |
| spelling | doaj-art-8ea4922bca3f495cb16a41fa50993d2c2025-08-20T03:50:49ZengElsevierOpenNano2352-95202025-07-012410024910.1016/j.onano.2025.100249Sunlight-active Bi2O2(OH)(NO3)-AgBr photocatalyst for degradation of Rhodamine B (RhB) dye and disinfection of E. coli bacteriaRuethaithip Dulyasucharit0Laksanawadee Saikhao1Sutthidech Preecharram2Nutthachai Prongmanee3Wipada Chaiyachet4Orapan Intharaksa5Suwat Nanan6Faculty of Science and Engineering, Kasetsart University, Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon 47000, ThailandFaculty of Science and Engineering, Kasetsart University, Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon 47000, ThailandFaculty of Science and Engineering, Kasetsart University, Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon 47000, ThailandFaculty of Science and Engineering, Kasetsart University, Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon 47000, ThailandFaculty of Science and Engineering, Kasetsart University, Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon 47000, ThailandFaculty of Science and Engineering, Kasetsart University, Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon 47000, ThailandDepartment of Chemistry, Faculty of Science, Materials Chemistry Research Center, Center of Excellence for Innovation in Chemistry (PERCH-CIC), Khon Kaen University, Khon Kaen 40002, Thailand; Corresponding author.A sunlight-driven Bi2O2(OH)(NO3)-AgBr heterostructure photocatalyst (denoted as BiON-AgBr) was synthesized by a two-step route combining hydrothermal and chemical precipitation methods. Firstly, the pristine BiON was prepared, via two types of solvent, by using a hydrothermal method. In the case that water was used as a solvent, the BiON.W photocatalyst with a pine-like structure was obtained. However, by using mixed solvent (comprising ethanol: water of 20:80), the BiON.M photocatalyst with a flower-like morphology was achieved. Secondly, the binary BiON-AgBr heterostructure was then constructed using a chemical precipitation technique. Accordingly, the photocatalytic performance of the prepared BiON-AgBr photocatalyst was evaluated through the photodegradation of Rhodamine B (RhB) dye under natural sunlight irradiation. The synthesized BiON-AgBr photocatalyst still exhibits high photocatalytic efficiency, even after three consecutive cycles of use. Trapping experiment revealed that the superoxide anion radicals (•O₂⁻) play the most important role in RhB removal. The result suggested a Z-scheme mechanism based on AgBr/Ag/BiON. The formation of metallic silver (Ag0), upon sunlight illumination, was proved as the evidence shown in the XRD pattern of the used photocatalyst. The synergistic effect of the Z-scheme heterojunction and the surface plasmon resonance (SPR) of silver metal results in the considerable enhancement of the sunlight-driven photodegradation of RhB dye and the remarkable improvement of the disinfection of E. coli bacteria.http://www.sciencedirect.com/science/article/pii/S2352952025000180Bi2O2(OH)NO3AgBrVisible lightSunlight-responsive photocatalystAntibacterial properties |
| spellingShingle | Ruethaithip Dulyasucharit Laksanawadee Saikhao Sutthidech Preecharram Nutthachai Prongmanee Wipada Chaiyachet Orapan Intharaksa Suwat Nanan Sunlight-active Bi2O2(OH)(NO3)-AgBr photocatalyst for degradation of Rhodamine B (RhB) dye and disinfection of E. coli bacteria OpenNano Bi2O2(OH)NO3 AgBr Visible light Sunlight-responsive photocatalyst Antibacterial properties |
| title | Sunlight-active Bi2O2(OH)(NO3)-AgBr photocatalyst for degradation of Rhodamine B (RhB) dye and disinfection of E. coli bacteria |
| title_full | Sunlight-active Bi2O2(OH)(NO3)-AgBr photocatalyst for degradation of Rhodamine B (RhB) dye and disinfection of E. coli bacteria |
| title_fullStr | Sunlight-active Bi2O2(OH)(NO3)-AgBr photocatalyst for degradation of Rhodamine B (RhB) dye and disinfection of E. coli bacteria |
| title_full_unstemmed | Sunlight-active Bi2O2(OH)(NO3)-AgBr photocatalyst for degradation of Rhodamine B (RhB) dye and disinfection of E. coli bacteria |
| title_short | Sunlight-active Bi2O2(OH)(NO3)-AgBr photocatalyst for degradation of Rhodamine B (RhB) dye and disinfection of E. coli bacteria |
| title_sort | sunlight active bi2o2 oh no3 agbr photocatalyst for degradation of rhodamine b rhb dye and disinfection of e coli bacteria |
| topic | Bi2O2(OH)NO3 AgBr Visible light Sunlight-responsive photocatalyst Antibacterial properties |
| url | http://www.sciencedirect.com/science/article/pii/S2352952025000180 |
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