Preparation of g-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode and its photoelectrocatalytic activity for tetracycline degradation
g-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode was prepared by a facile drop coating method. The influences of precursor materials and bias voltages on the photoelectrocatalytic properties towards tetracycline degradation using as-prepared g-C<sub>3</sub>N...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2020-12-01
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| Series: | Cailiao gongcheng |
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| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000576 |
| _version_ | 1797968710263111680 |
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| author | HU Xiao-feng PENG Qing-qi ZHANG Wen-hua YE Wen-hua WANG Hui-hu |
| author_facet | HU Xiao-feng PENG Qing-qi ZHANG Wen-hua YE Wen-hua WANG Hui-hu |
| author_sort | HU Xiao-feng |
| collection | DOAJ |
| description | g-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode was prepared by a facile drop coating method. The influences of precursor materials and bias voltages on the photoelectrocatalytic properties towards tetracycline degradation using as-prepared g-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode (DUCN) were studied. The results demonstrate that the DUCN photoelectrode prepared by calcination of urea and dicyandiamide precursor mixtures exhibits the highest pollutant removal efficiency, which may be due to its best film formation property and highest photoelectron-hole separation efficiency. In addition, in the process of photoelectrocatalysis (PEC), photocatalysis (PC) and electrocatalysis (EC) promote and optimize each other, showing a significant synergistic effect. The DUCN photoelectrode displays the highest removal rate of tetracycline with an initial concentration of 5 mg/L at a bias of 1.0 V, which are 5.6 times and 3.8 times of that obtained by single photocatalytic and electrocatalytic process, respectively. The reason for the enhanced pollutant removal efficiency may be that the external bias voltage enables the photogenerated electrons transfer to the counter electrode more efficiently under the photoelectric synergistic effect, which promotes the separation of photogenerated electrons and holes. |
| first_indexed | 2024-04-11T02:51:04Z |
| format | Article |
| id | doaj.art-9902452a65bd44798970c5891a3d05be |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:51:04Z |
| publishDate | 2020-12-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-9902452a65bd44798970c5891a3d05be2023-01-02T16:33:54ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812020-12-014812828910.11868/j.issn.1001-4381.2019.00057620201210Preparation of g-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode and its photoelectrocatalytic activity for tetracycline degradationHU Xiao-feng0PENG Qing-qi1ZHANG Wen-hua2YE Wen-hua3WANG Hui-hu4School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, ChinaSchool of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, ChinaSchool of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, ChinaSchool of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, ChinaSchool of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, Chinag-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode was prepared by a facile drop coating method. The influences of precursor materials and bias voltages on the photoelectrocatalytic properties towards tetracycline degradation using as-prepared g-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode (DUCN) were studied. The results demonstrate that the DUCN photoelectrode prepared by calcination of urea and dicyandiamide precursor mixtures exhibits the highest pollutant removal efficiency, which may be due to its best film formation property and highest photoelectron-hole separation efficiency. In addition, in the process of photoelectrocatalysis (PEC), photocatalysis (PC) and electrocatalysis (EC) promote and optimize each other, showing a significant synergistic effect. The DUCN photoelectrode displays the highest removal rate of tetracycline with an initial concentration of 5 mg/L at a bias of 1.0 V, which are 5.6 times and 3.8 times of that obtained by single photocatalytic and electrocatalytic process, respectively. The reason for the enhanced pollutant removal efficiency may be that the external bias voltage enables the photogenerated electrons transfer to the counter electrode more efficiently under the photoelectric synergistic effect, which promotes the separation of photogenerated electrons and holes.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000576g-c<sub>3</sub>n<sub>4</sub>photocatalysisphotoelectrocatalysistetracycline |
| spellingShingle | HU Xiao-feng PENG Qing-qi ZHANG Wen-hua YE Wen-hua WANG Hui-hu Preparation of g-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode and its photoelectrocatalytic activity for tetracycline degradation Cailiao gongcheng g-c<sub>3</sub>n<sub>4</sub> photocatalysis photoelectrocatalysis tetracycline |
| title | Preparation of g-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode and its photoelectrocatalytic activity for tetracycline degradation |
| title_full | Preparation of g-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode and its photoelectrocatalytic activity for tetracycline degradation |
| title_fullStr | Preparation of g-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode and its photoelectrocatalytic activity for tetracycline degradation |
| title_full_unstemmed | Preparation of g-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode and its photoelectrocatalytic activity for tetracycline degradation |
| title_short | Preparation of g-C<sub>3</sub>N<sub>4</sub> nanosheets photoelectrode and its photoelectrocatalytic activity for tetracycline degradation |
| title_sort | preparation of g c sub 3 sub n sub 4 sub nanosheets photoelectrode and its photoelectrocatalytic activity for tetracycline degradation |
| topic | g-c<sub>3</sub>n<sub>4</sub> photocatalysis photoelectrocatalysis tetracycline |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000576 |
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