A Novel Heterostructure of BiOI Nanosheets Anchored onto MWCNTs with Excellent Visible-Light Photocatalytic Activity
Developing efficient visible-light-driven (VLD) photocatalysts for environmental decontamination has drawn significant attention in recent years. Herein, we have reported a novel heterostructure of multiwalled carbon nanotubes (MWCNTs) coated with BiOI nanosheets as an efficient VLD photocatalyst, w...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-01-01
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| Series: | Nanomaterials |
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| Online Access: | http://www.mdpi.com/2079-4991/7/1/22 |
| _version_ | 1819132045789495296 |
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| author | Shijie Li Shiwei Hu Kaibing Xu Wei Jiang Jianshe Liu Zhaohui Wang |
| author_facet | Shijie Li Shiwei Hu Kaibing Xu Wei Jiang Jianshe Liu Zhaohui Wang |
| author_sort | Shijie Li |
| collection | DOAJ |
| description | Developing efficient visible-light-driven (VLD) photocatalysts for environmental decontamination has drawn significant attention in recent years. Herein, we have reported a novel heterostructure of multiwalled carbon nanotubes (MWCNTs) coated with BiOI nanosheets as an efficient VLD photocatalyst, which was prepared via a simple solvothermal method. The morphology and structure were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectroscopy (DRS), and specific surface area measurements. The results showed that BiOI nanosheets were well deposited on MWCNTs. The MWCNTs/BiOI composites exhibited remarkably enhanced photocatalytic activity for the degradation of rhodamine B (RhB), methyl orange (MO), and para-chlorophenol (4-CP) under visible-light, compared with pure BiOI. When the MWCNTs content is 3 wt %, the MWCNTs/BiOI composite (3%M-Bi) achieves the highest activity, which is even higher than that of a mechanical mixture (3 wt % MWCNTs + 97 wt % BiOI). The superior photocatalytic activity is predominantly due to the strong coupling interface between MWCNTs and BiOI, which significantly promotes the efficient electron-hole separation. The photo-induced holes (h+) and superoxide radicals (O2−) mainly contribute to the photocatalytic degradation of RhB over 3%M-Bi. Therefore, the MWCNTs/BiOI composite is expected to be an efficient VLD photocatalyst for environmental purification. |
| first_indexed | 2024-12-22T09:25:10Z |
| format | Article |
| id | doaj.art-15b4a6f6498a4f76b9581fcc7c144163 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-22T09:25:10Z |
| publishDate | 2017-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-15b4a6f6498a4f76b9581fcc7c1441632022-12-21T18:31:06ZengMDPI AGNanomaterials2079-49912017-01-01712210.3390/nano7010022nano7010022A Novel Heterostructure of BiOI Nanosheets Anchored onto MWCNTs with Excellent Visible-Light Photocatalytic ActivityShijie Li0Shiwei Hu1Kaibing Xu2Wei Jiang3Jianshe Liu4Zhaohui Wang5Innovation & Application Institute, Zhejiang Ocean University, Zhoushan 316022, ChinaInnovation & Application Institute, Zhejiang Ocean University, Zhoushan 316022, ChinaState Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Research Center for Analysis and Measurement, Donghua University, Shanghai 201620, ChinaInnovation & Application Institute, Zhejiang Ocean University, Zhoushan 316022, ChinaState Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, ChinaState Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, ChinaDeveloping efficient visible-light-driven (VLD) photocatalysts for environmental decontamination has drawn significant attention in recent years. Herein, we have reported a novel heterostructure of multiwalled carbon nanotubes (MWCNTs) coated with BiOI nanosheets as an efficient VLD photocatalyst, which was prepared via a simple solvothermal method. The morphology and structure were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectroscopy (DRS), and specific surface area measurements. The results showed that BiOI nanosheets were well deposited on MWCNTs. The MWCNTs/BiOI composites exhibited remarkably enhanced photocatalytic activity for the degradation of rhodamine B (RhB), methyl orange (MO), and para-chlorophenol (4-CP) under visible-light, compared with pure BiOI. When the MWCNTs content is 3 wt %, the MWCNTs/BiOI composite (3%M-Bi) achieves the highest activity, which is even higher than that of a mechanical mixture (3 wt % MWCNTs + 97 wt % BiOI). The superior photocatalytic activity is predominantly due to the strong coupling interface between MWCNTs and BiOI, which significantly promotes the efficient electron-hole separation. The photo-induced holes (h+) and superoxide radicals (O2−) mainly contribute to the photocatalytic degradation of RhB over 3%M-Bi. Therefore, the MWCNTs/BiOI composite is expected to be an efficient VLD photocatalyst for environmental purification.http://www.mdpi.com/2079-4991/7/1/22MWCNTs/BiOInanocompositesphotocatalysisvisible-light |
| spellingShingle | Shijie Li Shiwei Hu Kaibing Xu Wei Jiang Jianshe Liu Zhaohui Wang A Novel Heterostructure of BiOI Nanosheets Anchored onto MWCNTs with Excellent Visible-Light Photocatalytic Activity Nanomaterials MWCNTs/BiOI nanocomposites photocatalysis visible-light |
| title | A Novel Heterostructure of BiOI Nanosheets Anchored onto MWCNTs with Excellent Visible-Light Photocatalytic Activity |
| title_full | A Novel Heterostructure of BiOI Nanosheets Anchored onto MWCNTs with Excellent Visible-Light Photocatalytic Activity |
| title_fullStr | A Novel Heterostructure of BiOI Nanosheets Anchored onto MWCNTs with Excellent Visible-Light Photocatalytic Activity |
| title_full_unstemmed | A Novel Heterostructure of BiOI Nanosheets Anchored onto MWCNTs with Excellent Visible-Light Photocatalytic Activity |
| title_short | A Novel Heterostructure of BiOI Nanosheets Anchored onto MWCNTs with Excellent Visible-Light Photocatalytic Activity |
| title_sort | novel heterostructure of bioi nanosheets anchored onto mwcnts with excellent visible light photocatalytic activity |
| topic | MWCNTs/BiOI nanocomposites photocatalysis visible-light |
| url | http://www.mdpi.com/2079-4991/7/1/22 |
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