Mechanism and Purification Effect of Photocatalytic Wastewater Treatment Using Graphene Oxide-Doped Titanium Dioxide Composite Nanomaterials
The present work aims to examine the mechanism and purification effect of graphene oxide (GO) and GO composite materials for photocatalysis sewage treatment. TiO<sub>2</sub> nanoparticles were prepared using the sol-gel technique; GO was prepared using the modified Hummers technique; and...
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MDPI AG
2021-07-01
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| Online Access: | https://www.mdpi.com/2073-4441/13/14/1915 |
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| author | Sheng Liu Zi-Lin Su Yi Liu Lin-Ya Yi Zhan-Li Chen Zhen-Zhong Liu |
| author_facet | Sheng Liu Zi-Lin Su Yi Liu Lin-Ya Yi Zhan-Li Chen Zhen-Zhong Liu |
| author_sort | Sheng Liu |
| collection | DOAJ |
| description | The present work aims to examine the mechanism and purification effect of graphene oxide (GO) and GO composite materials for photocatalysis sewage treatment. TiO<sub>2</sub> nanoparticles were prepared using the sol-gel technique; GO was prepared using the modified Hummers technique; and finally, a new N-TiO<sub>2</sub>/GO photocatalysis composite material was prepared by hydrothermal synthesis. As a nitrogen source, urea uses non-metal doping to broaden the photoresponse range of TiO<sub>2</sub>. The prepared GO and its composite materials are characterized. Simulation experiments, using the typical water dye pollutant rhodamine B (RhB), tested and analyzed the adsorption and photocatalysis performances of the prepared GO and its composite materials. Characterization analysis demonstrates that TiO<sub>2</sub> is distributed on the GO surface in the prepared N-TiO<sub>2</sub>/GO material. Simultaneously, nitrogen doping causes TiO<sub>2</sub> on the GO surface to seem uniformly dispersed. X-ray Diffractometer (XRD) spectrums suggest that TiO<sub>2</sub> on the GO surface presents an anatase crystal structure; infrared spectrums display the characteristic vibration peaks of the TiO<sub>2</sub> and GO. Adsorption performance analysis illustrates that N-TiO<sub>2</sub>/GO can provide an adsorption amount of 167.92 mg/g in the same time frame and photocatalysis for visible lights of 57.69%. All data present an excellent linear fitting relationship to the first-order dynamic equation. Therefore, the prepared GO composite materials possess outstanding absorption and photocatalysis performances, providing an experimental basis for sewage treatment and purification using photocatalysis approaches in the future. |
| first_indexed | 2024-03-10T09:19:37Z |
| format | Article |
| id | doaj.art-3a8a6e844ff044028ebae87dec90560e |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T09:19:37Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-3a8a6e844ff044028ebae87dec90560e2023-11-22T05:16:19ZengMDPI AGWater2073-44412021-07-011314191510.3390/w13141915Mechanism and Purification Effect of Photocatalytic Wastewater Treatment Using Graphene Oxide-Doped Titanium Dioxide Composite NanomaterialsSheng Liu0Zi-Lin Su1Yi Liu2Lin-Ya Yi3Zhan-Li Chen4Zhen-Zhong Liu5School of Resources Environment and Chemical Engineering, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, ChinaSchool of Resources Environment and Chemical Engineering, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, ChinaSchool of Resources Environment and Chemical Engineering, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, ChinaSchool of Resources Environment and Chemical Engineering, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, ChinaSchool of Resources Environment and Chemical Engineering, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, ChinaSchool of Resources Environment and Chemical Engineering, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, ChinaThe present work aims to examine the mechanism and purification effect of graphene oxide (GO) and GO composite materials for photocatalysis sewage treatment. TiO<sub>2</sub> nanoparticles were prepared using the sol-gel technique; GO was prepared using the modified Hummers technique; and finally, a new N-TiO<sub>2</sub>/GO photocatalysis composite material was prepared by hydrothermal synthesis. As a nitrogen source, urea uses non-metal doping to broaden the photoresponse range of TiO<sub>2</sub>. The prepared GO and its composite materials are characterized. Simulation experiments, using the typical water dye pollutant rhodamine B (RhB), tested and analyzed the adsorption and photocatalysis performances of the prepared GO and its composite materials. Characterization analysis demonstrates that TiO<sub>2</sub> is distributed on the GO surface in the prepared N-TiO<sub>2</sub>/GO material. Simultaneously, nitrogen doping causes TiO<sub>2</sub> on the GO surface to seem uniformly dispersed. X-ray Diffractometer (XRD) spectrums suggest that TiO<sub>2</sub> on the GO surface presents an anatase crystal structure; infrared spectrums display the characteristic vibration peaks of the TiO<sub>2</sub> and GO. Adsorption performance analysis illustrates that N-TiO<sub>2</sub>/GO can provide an adsorption amount of 167.92 mg/g in the same time frame and photocatalysis for visible lights of 57.69%. All data present an excellent linear fitting relationship to the first-order dynamic equation. Therefore, the prepared GO composite materials possess outstanding absorption and photocatalysis performances, providing an experimental basis for sewage treatment and purification using photocatalysis approaches in the future.https://www.mdpi.com/2073-4441/13/14/1915graphene oxidephotocatalysissewage treatmentrhodamine Bnanomaterial |
| spellingShingle | Sheng Liu Zi-Lin Su Yi Liu Lin-Ya Yi Zhan-Li Chen Zhen-Zhong Liu Mechanism and Purification Effect of Photocatalytic Wastewater Treatment Using Graphene Oxide-Doped Titanium Dioxide Composite Nanomaterials Water graphene oxide photocatalysis sewage treatment rhodamine B nanomaterial |
| title | Mechanism and Purification Effect of Photocatalytic Wastewater Treatment Using Graphene Oxide-Doped Titanium Dioxide Composite Nanomaterials |
| title_full | Mechanism and Purification Effect of Photocatalytic Wastewater Treatment Using Graphene Oxide-Doped Titanium Dioxide Composite Nanomaterials |
| title_fullStr | Mechanism and Purification Effect of Photocatalytic Wastewater Treatment Using Graphene Oxide-Doped Titanium Dioxide Composite Nanomaterials |
| title_full_unstemmed | Mechanism and Purification Effect of Photocatalytic Wastewater Treatment Using Graphene Oxide-Doped Titanium Dioxide Composite Nanomaterials |
| title_short | Mechanism and Purification Effect of Photocatalytic Wastewater Treatment Using Graphene Oxide-Doped Titanium Dioxide Composite Nanomaterials |
| title_sort | mechanism and purification effect of photocatalytic wastewater treatment using graphene oxide doped titanium dioxide composite nanomaterials |
| topic | graphene oxide photocatalysis sewage treatment rhodamine B nanomaterial |
| url | https://www.mdpi.com/2073-4441/13/14/1915 |
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