Disinfection effects induced by graphene-based photocatalytic composites under solar light illumination
ZnO/graphene and ZnO/stellerite composite photocatalysts were prepared through a facile hydrothermal-calcination processing with zinc acetate,urea,natural stellerite and graphene.The composition,morphology,specific surface area,pore size distribution and light absorption properties of prepared compo...
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| Format: | Article |
| Language: | English |
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Emergency Management Press
2019-04-01
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| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/article/id/210 |
| _version_ | 1811307257519931392 |
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| author | Zhang Wanzhong Yao Dengke Cheng Shenhang Yu Caihong Sun Zhiming Zheng Shuilin |
| author_facet | Zhang Wanzhong Yao Dengke Cheng Shenhang Yu Caihong Sun Zhiming Zheng Shuilin |
| author_sort | Zhang Wanzhong |
| collection | DOAJ |
| description | ZnO/graphene and ZnO/stellerite composite photocatalysts were prepared through a facile hydrothermal-calcination processing with zinc acetate,urea,natural stellerite and graphene.The composition,morphology,specific surface area,pore size distribution and light absorption properties of prepared composites were characterized by scanning electron microscopy (SEM),X-ray diffraction (XRD),nitrogen adsorption/desorption and UV-visible diffused reflectance spectroscopy (UV-vis DRS).It was found that the prepared photocatalysts ZnO/stellerite and ZnO/graphene had wurtzite ZnO phase morphology with ZnO paticle sizes of 22.42 nm and 15.72 nm.<i>S</i><sub>BET</sub> of composites were 16.54 m<sup>2</sup>/g and 35.55 m<sup>2</sup>/g respectively.3D structure between ZnO and graphene resulted in the response to visible light region,reduced recombination of free charges,and enhanced interface charge transfer.The disinfection action towards <i>Staphylococcus</i> <i>aureus</i> (<i>S</i>.<i>aureus</i>) under solar light showed that the optimal amount of ZnO/graphene was 100 mg/L.ZnO/graphene exhibited significantly enhanced photocatalytic disinfection efficiency than ZnO/stellerite powders,and disinfection rate up to 1.17 h<sup>-1 </sup>is 1.31 times that of ZnO/stellerite composite. |
| first_indexed | 2024-04-13T09:01:12Z |
| format | Article |
| id | doaj.art-7dc98fc49a11489f80168aadab1fb164 |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-04-13T09:01:12Z |
| publishDate | 2019-04-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-7dc98fc49a11489f80168aadab1fb1642022-12-22T02:53:08ZengEmergency Management Press矿业科学学报2096-21932019-04-014216216910.19606/j.cnki.jmst.2019.02.00920190209Disinfection effects induced by graphene-based photocatalytic composites under solar light illuminationZhang Wanzhong0Yao Dengke1Cheng Shenhang2Yu Caihong3Sun Zhiming4Zheng Shuilin5School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, ChinaZnO/graphene and ZnO/stellerite composite photocatalysts were prepared through a facile hydrothermal-calcination processing with zinc acetate,urea,natural stellerite and graphene.The composition,morphology,specific surface area,pore size distribution and light absorption properties of prepared composites were characterized by scanning electron microscopy (SEM),X-ray diffraction (XRD),nitrogen adsorption/desorption and UV-visible diffused reflectance spectroscopy (UV-vis DRS).It was found that the prepared photocatalysts ZnO/stellerite and ZnO/graphene had wurtzite ZnO phase morphology with ZnO paticle sizes of 22.42 nm and 15.72 nm.<i>S</i><sub>BET</sub> of composites were 16.54 m<sup>2</sup>/g and 35.55 m<sup>2</sup>/g respectively.3D structure between ZnO and graphene resulted in the response to visible light region,reduced recombination of free charges,and enhanced interface charge transfer.The disinfection action towards <i>Staphylococcus</i> <i>aureus</i> (<i>S</i>.<i>aureus</i>) under solar light showed that the optimal amount of ZnO/graphene was 100 mg/L.ZnO/graphene exhibited significantly enhanced photocatalytic disinfection efficiency than ZnO/stellerite powders,and disinfection rate up to 1.17 h<sup>-1 </sup>is 1.31 times that of ZnO/stellerite composite.http://kykxxb.cumtb.edu.cn/article/id/210znographenestellerite<i>s</i>.<i>aureus</i>disinfection rate |
| spellingShingle | Zhang Wanzhong Yao Dengke Cheng Shenhang Yu Caihong Sun Zhiming Zheng Shuilin Disinfection effects induced by graphene-based photocatalytic composites under solar light illumination 矿业科学学报 zno graphene stellerite <i>s</i>.<i>aureus</i> disinfection rate |
| title | Disinfection effects induced by graphene-based photocatalytic composites under solar light illumination |
| title_full | Disinfection effects induced by graphene-based photocatalytic composites under solar light illumination |
| title_fullStr | Disinfection effects induced by graphene-based photocatalytic composites under solar light illumination |
| title_full_unstemmed | Disinfection effects induced by graphene-based photocatalytic composites under solar light illumination |
| title_short | Disinfection effects induced by graphene-based photocatalytic composites under solar light illumination |
| title_sort | disinfection effects induced by graphene based photocatalytic composites under solar light illumination |
| topic | zno graphene stellerite <i>s</i>.<i>aureus</i> disinfection rate |
| url | http://kykxxb.cumtb.edu.cn/article/id/210 |
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