Room Temperature Engineering Crystal Facet of Cu<sub>2</sub>O for Photocatalytic Degradation of Methyl Orange
Cuprous oxide (Cu<sub>2</sub>O) has received enormous interest for photocatalysis owing to its narrow band gap of 2.17 eV, which is beneficial for visible-light absorption. In this work, we succeeded in synthesizing Cu<sub>2</sub>O nanocrystals with two morphologies, cube and...
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MDPI AG
2022-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/10/1697 |
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| author | Jiwen Li Meizi He Jiankun Yan Jiahui Liu Jiaxin Zhang Jingjun Ma |
| author_facet | Jiwen Li Meizi He Jiankun Yan Jiahui Liu Jiaxin Zhang Jingjun Ma |
| author_sort | Jiwen Li |
| collection | DOAJ |
| description | Cuprous oxide (Cu<sub>2</sub>O) has received enormous interest for photocatalysis owing to its narrow band gap of 2.17 eV, which is beneficial for visible-light absorption. In this work, we succeeded in synthesizing Cu<sub>2</sub>O nanocrystals with two morphologies, cube and sphere, at room temperature via a simple wet-chemistry strategy. The morphologies of Cu<sub>2</sub>O change from cube to sphere when adding PVP from 0 g to 4 g and the mainly exposed crystal faces of cubic and spherical Cu<sub>2</sub>O are (100) and (111), respectively. The photocatalytic properties of the as-prepared Cu<sub>2</sub>O were evaluated by the photocatalytic degradation of methyl orange (MO). Cubic Cu<sub>2</sub>O(100) showed excellent photocatalytic activity. After the optical and photoelectric properties were investigated, we found that cubic Cu<sub>2</sub>O(100) has better photoelectric separation efficiency than spherical Cu<sub>2</sub>O(111). Finally, the possible mechanism was proposed for cubic Cu<sub>2</sub>O(100) degrading MO under visible light. |
| first_indexed | 2024-03-10T03:16:03Z |
| format | Article |
| id | doaj.art-30c14a331c3a47e793eb8aa6bf401fb4 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T03:16:03Z |
| publishDate | 2022-05-01 |
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| series | Nanomaterials |
| spelling | doaj.art-30c14a331c3a47e793eb8aa6bf401fb42023-11-23T12:26:46ZengMDPI AGNanomaterials2079-49912022-05-011210169710.3390/nano12101697Room Temperature Engineering Crystal Facet of Cu<sub>2</sub>O for Photocatalytic Degradation of Methyl OrangeJiwen Li0Meizi He1Jiankun Yan2Jiahui Liu3Jiaxin Zhang4Jingjun Ma5College of Science and Technology, Hebei Agricultural University, Huanghua 061100, ChinaCollege of Science and Technology, Hebei Agricultural University, Huanghua 061100, ChinaCollege of Science and Technology, Hebei Agricultural University, Huanghua 061100, ChinaCollege of Science and Technology, Hebei Agricultural University, Huanghua 061100, ChinaCollege of Science and Technology, Hebei Agricultural University, Huanghua 061100, ChinaCollege of Science and Technology, Hebei Agricultural University, Huanghua 061100, ChinaCuprous oxide (Cu<sub>2</sub>O) has received enormous interest for photocatalysis owing to its narrow band gap of 2.17 eV, which is beneficial for visible-light absorption. In this work, we succeeded in synthesizing Cu<sub>2</sub>O nanocrystals with two morphologies, cube and sphere, at room temperature via a simple wet-chemistry strategy. The morphologies of Cu<sub>2</sub>O change from cube to sphere when adding PVP from 0 g to 4 g and the mainly exposed crystal faces of cubic and spherical Cu<sub>2</sub>O are (100) and (111), respectively. The photocatalytic properties of the as-prepared Cu<sub>2</sub>O were evaluated by the photocatalytic degradation of methyl orange (MO). Cubic Cu<sub>2</sub>O(100) showed excellent photocatalytic activity. After the optical and photoelectric properties were investigated, we found that cubic Cu<sub>2</sub>O(100) has better photoelectric separation efficiency than spherical Cu<sub>2</sub>O(111). Finally, the possible mechanism was proposed for cubic Cu<sub>2</sub>O(100) degrading MO under visible light.https://www.mdpi.com/2079-4991/12/10/1697photocatalysisCu<sub>2</sub>Omorphologyadsorption energyengineering crystal facet |
| spellingShingle | Jiwen Li Meizi He Jiankun Yan Jiahui Liu Jiaxin Zhang Jingjun Ma Room Temperature Engineering Crystal Facet of Cu<sub>2</sub>O for Photocatalytic Degradation of Methyl Orange Nanomaterials photocatalysis Cu<sub>2</sub>O morphology adsorption energy engineering crystal facet |
| title | Room Temperature Engineering Crystal Facet of Cu<sub>2</sub>O for Photocatalytic Degradation of Methyl Orange |
| title_full | Room Temperature Engineering Crystal Facet of Cu<sub>2</sub>O for Photocatalytic Degradation of Methyl Orange |
| title_fullStr | Room Temperature Engineering Crystal Facet of Cu<sub>2</sub>O for Photocatalytic Degradation of Methyl Orange |
| title_full_unstemmed | Room Temperature Engineering Crystal Facet of Cu<sub>2</sub>O for Photocatalytic Degradation of Methyl Orange |
| title_short | Room Temperature Engineering Crystal Facet of Cu<sub>2</sub>O for Photocatalytic Degradation of Methyl Orange |
| title_sort | room temperature engineering crystal facet of cu sub 2 sub o for photocatalytic degradation of methyl orange |
| topic | photocatalysis Cu<sub>2</sub>O morphology adsorption energy engineering crystal facet |
| url | https://www.mdpi.com/2079-4991/12/10/1697 |
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