Microemulsion–Assisted Synthesis of Ag<sub>2</sub>CrO<sub>4</sub>@MIL–125(Ti)–NH<sub>2</sub> Z–Scheme Heterojunction for Visible–Light Photocatalytic Inactivation of Bacteria
Metal–organic frameworks (MOFs) are new porous materials composed of metal centers and organic ligand bridges, which received great attention in the field of photocatalysis. In this work, Ag<sub>2</sub>CrO<sub>4</sub>@MIL–125(Ti)–NH<sub>2</sub> (denoted as AgCr@M1...
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MDPI AG
2023-04-01
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| Online Access: | https://www.mdpi.com/2073-4344/13/5/817 |
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| author | Haoyu Yuan Chao Zhang Wenjing Chen Yuzhou Xia Lu Chen Renkun Huang Ruiru Si Ruowen Liang |
| author_facet | Haoyu Yuan Chao Zhang Wenjing Chen Yuzhou Xia Lu Chen Renkun Huang Ruiru Si Ruowen Liang |
| author_sort | Haoyu Yuan |
| collection | DOAJ |
| description | Metal–organic frameworks (MOFs) are new porous materials composed of metal centers and organic ligand bridges, which received great attention in the field of photocatalysis. In this work, Ag<sub>2</sub>CrO<sub>4</sub>@MIL–125(Ti)–NH<sub>2</sub> (denoted as AgCr@M125) Z–scheme heterojunctions were synthesized via a simple microemulsion method, by which highly dispersed nano–sized Ag<sub>2</sub>CrO<sub>4</sub> can be anchored uniformly on the surfaces of porous MIL–125(Ti)–NH<sub>2</sub> (denoted as M125). Compared with pure M125 and Ag<sub>2</sub>CrO<sub>4</sub>, the as–prepared AgCr@M125 hybrids show significant photocatalytic efficiency against inactivated <i>Staphylococcus aureus</i> (<i>S. aureus</i>), reaching over 97% inactivation of the bacteria after 15 min of visible light irradiation. Notably, the photocatalytic activity of the obtained 20%AgCr@M125 is about 1.75 times higher than that of AgCr–M125, which was prepared via a traditional precipitation method. The enhanced photocatalytic antibacterial activity of the AgCr@M125 photocatalytic system is strongly ascribed to a direct Z–scheme mechanism, which can be carefully discussed based on energy band positions and time–dependent electron spin response (ESR) experiments. Our work highlights a simple way to enhance the antibacterial effect by coupling with Ag<sub>2</sub>CrO<sub>4</sub> and M125 via a microemulsion–assisted strategy and affords an ideal example for developing MOFs–based Z–scheme photocatalysts with excellent photoactivity. |
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| last_indexed | 2024-03-11T03:52:01Z |
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| spelling | doaj.art-b709f313ad484344845e603d6ed90eae2023-11-18T00:50:37ZengMDPI AGCatalysts2073-43442023-04-0113581710.3390/catal13050817Microemulsion–Assisted Synthesis of Ag<sub>2</sub>CrO<sub>4</sub>@MIL–125(Ti)–NH<sub>2</sub> Z–Scheme Heterojunction for Visible–Light Photocatalytic Inactivation of BacteriaHaoyu Yuan0Chao Zhang1Wenjing Chen2Yuzhou Xia3Lu Chen4Renkun Huang5Ruiru Si6Ruowen Liang7State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, ChinaState Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, ChinaFujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, ChinaFujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, ChinaFujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, ChinaFujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, ChinaFujian Key Laboratory of Agro–Products Quality and Safety, Fujian Academy of Agricultural Sciences, Fuzhou 350003, ChinaState Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, ChinaMetal–organic frameworks (MOFs) are new porous materials composed of metal centers and organic ligand bridges, which received great attention in the field of photocatalysis. In this work, Ag<sub>2</sub>CrO<sub>4</sub>@MIL–125(Ti)–NH<sub>2</sub> (denoted as AgCr@M125) Z–scheme heterojunctions were synthesized via a simple microemulsion method, by which highly dispersed nano–sized Ag<sub>2</sub>CrO<sub>4</sub> can be anchored uniformly on the surfaces of porous MIL–125(Ti)–NH<sub>2</sub> (denoted as M125). Compared with pure M125 and Ag<sub>2</sub>CrO<sub>4</sub>, the as–prepared AgCr@M125 hybrids show significant photocatalytic efficiency against inactivated <i>Staphylococcus aureus</i> (<i>S. aureus</i>), reaching over 97% inactivation of the bacteria after 15 min of visible light irradiation. Notably, the photocatalytic activity of the obtained 20%AgCr@M125 is about 1.75 times higher than that of AgCr–M125, which was prepared via a traditional precipitation method. The enhanced photocatalytic antibacterial activity of the AgCr@M125 photocatalytic system is strongly ascribed to a direct Z–scheme mechanism, which can be carefully discussed based on energy band positions and time–dependent electron spin response (ESR) experiments. Our work highlights a simple way to enhance the antibacterial effect by coupling with Ag<sub>2</sub>CrO<sub>4</sub> and M125 via a microemulsion–assisted strategy and affords an ideal example for developing MOFs–based Z–scheme photocatalysts with excellent photoactivity.https://www.mdpi.com/2073-4344/13/5/817MIL–125(Ti)–NH<sub>2</sub>Ag<sub>2</sub>CrO<sub>4</sub><i>S. aureus</i>Z–schememicroemulsion method |
| spellingShingle | Haoyu Yuan Chao Zhang Wenjing Chen Yuzhou Xia Lu Chen Renkun Huang Ruiru Si Ruowen Liang Microemulsion–Assisted Synthesis of Ag<sub>2</sub>CrO<sub>4</sub>@MIL–125(Ti)–NH<sub>2</sub> Z–Scheme Heterojunction for Visible–Light Photocatalytic Inactivation of Bacteria Catalysts MIL–125(Ti)–NH<sub>2</sub> Ag<sub>2</sub>CrO<sub>4</sub> <i>S. aureus</i> Z–scheme microemulsion method |
| title | Microemulsion–Assisted Synthesis of Ag<sub>2</sub>CrO<sub>4</sub>@MIL–125(Ti)–NH<sub>2</sub> Z–Scheme Heterojunction for Visible–Light Photocatalytic Inactivation of Bacteria |
| title_full | Microemulsion–Assisted Synthesis of Ag<sub>2</sub>CrO<sub>4</sub>@MIL–125(Ti)–NH<sub>2</sub> Z–Scheme Heterojunction for Visible–Light Photocatalytic Inactivation of Bacteria |
| title_fullStr | Microemulsion–Assisted Synthesis of Ag<sub>2</sub>CrO<sub>4</sub>@MIL–125(Ti)–NH<sub>2</sub> Z–Scheme Heterojunction for Visible–Light Photocatalytic Inactivation of Bacteria |
| title_full_unstemmed | Microemulsion–Assisted Synthesis of Ag<sub>2</sub>CrO<sub>4</sub>@MIL–125(Ti)–NH<sub>2</sub> Z–Scheme Heterojunction for Visible–Light Photocatalytic Inactivation of Bacteria |
| title_short | Microemulsion–Assisted Synthesis of Ag<sub>2</sub>CrO<sub>4</sub>@MIL–125(Ti)–NH<sub>2</sub> Z–Scheme Heterojunction for Visible–Light Photocatalytic Inactivation of Bacteria |
| title_sort | microemulsion assisted synthesis of ag sub 2 sub cro sub 4 sub mil 125 ti nh sub 2 sub z scheme heterojunction for visible light photocatalytic inactivation of bacteria |
| topic | MIL–125(Ti)–NH<sub>2</sub> Ag<sub>2</sub>CrO<sub>4</sub> <i>S. aureus</i> Z–scheme microemulsion method |
| url | https://www.mdpi.com/2073-4344/13/5/817 |
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