Biomimetic Guided Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> Vertical Heterojunction with Controllable Microstructure for Efficient Photocatalysis
To bridge the technical gap of heterojunction induction control in conventional semiconductor photocatalysts, a method of regulating the growth of heterojunctions utilizing biomimetic structures was designed to prepare a series of Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2&l...
| Κύριοι συγγραφείς: | , , , |
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| Μορφή: | Άρθρο |
| Γλώσσα: | English |
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MDPI AG
2023-03-01
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| Σειρά: | Molecules |
| Θέματα: | |
| Διαθέσιμο Online: | https://www.mdpi.com/1420-3049/28/7/3123 |
| _version_ | 1827746706490392576 |
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| author | Yuanbo Sun Ziang Jia Ning Wan Wei Feng |
| author_facet | Yuanbo Sun Ziang Jia Ning Wan Wei Feng |
| author_sort | Yuanbo Sun |
| collection | DOAJ |
| description | To bridge the technical gap of heterojunction induction control in conventional semiconductor photocatalysts, a method of regulating the growth of heterojunctions utilizing biomimetic structures was designed to prepare a series of Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> vertical heterojunction nanocomposites for the disposal of environmentally hazardous tetracycline wastewater difficult to degrade by conventional microbial techniques. Porous Bi<sub>2</sub>O<sub>3</sub> precursors with high-energy crystalline (110) dominant growth were produced using the sunflower straw bio-template technique (SSBT). Bi<sub>2</sub>WO<sub>6</sub> with a (131) plane grew preferentially into 2.8 to 4 nm pieces on the (110) plane of Bi<sub>2</sub>O<sub>3</sub>, causing a significant density reduction between Bi<sub>2</sub>WO<sub>6</sub> pieces and a dimensional decrease in the agglomerated Bi<sub>2</sub>WO<sub>6</sub> spheres from 3 μm to 700 nm since Bi<sub>2</sub>WO<sub>6</sub> grew on the structure of the biomimetic Bi<sub>2</sub>O<sub>3</sub>. The optimal 1:8 Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> coupling catalyst was obtained via adapting the ratio of the two semiconductors, and the coupling ratio of 1:8 minimized the adverse effects of the overgrowth of Bi<sub>2</sub>WO<sub>6</sub> on degradation performance by securing the quantity of vertical heterojunctions. The material degradation reaction energy barrier and bandgap were significantly reduced by the presence of a large number of vertical heterojunction structures, resulting in a material with lower impedance and higher electron–hole separation efficiency; thus, the degradation efficiency of 1:8 Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> for tetracycline hydrochloride reached 99% within 60 min. In conclusion, this study not only successfully synthesized a novel photocatalyst with potential applications in water pollution remediation but also introduced a pioneering approach for semiconductor-driven synthesis. |
| first_indexed | 2024-03-11T05:30:06Z |
| format | Article |
| id | doaj.art-c7ad5fa3dde04f63b2d4b54a1af3e30f |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T05:30:06Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj.art-c7ad5fa3dde04f63b2d4b54a1af3e30f2023-11-17T17:13:52ZengMDPI AGMolecules1420-30492023-03-01287312310.3390/molecules28073123Biomimetic Guided Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> Vertical Heterojunction with Controllable Microstructure for Efficient PhotocatalysisYuanbo Sun0Ziang Jia1Ning Wan2Wei Feng3Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, ChinaKey Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, ChinaKey Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, ChinaKey Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, ChinaTo bridge the technical gap of heterojunction induction control in conventional semiconductor photocatalysts, a method of regulating the growth of heterojunctions utilizing biomimetic structures was designed to prepare a series of Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> vertical heterojunction nanocomposites for the disposal of environmentally hazardous tetracycline wastewater difficult to degrade by conventional microbial techniques. Porous Bi<sub>2</sub>O<sub>3</sub> precursors with high-energy crystalline (110) dominant growth were produced using the sunflower straw bio-template technique (SSBT). Bi<sub>2</sub>WO<sub>6</sub> with a (131) plane grew preferentially into 2.8 to 4 nm pieces on the (110) plane of Bi<sub>2</sub>O<sub>3</sub>, causing a significant density reduction between Bi<sub>2</sub>WO<sub>6</sub> pieces and a dimensional decrease in the agglomerated Bi<sub>2</sub>WO<sub>6</sub> spheres from 3 μm to 700 nm since Bi<sub>2</sub>WO<sub>6</sub> grew on the structure of the biomimetic Bi<sub>2</sub>O<sub>3</sub>. The optimal 1:8 Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> coupling catalyst was obtained via adapting the ratio of the two semiconductors, and the coupling ratio of 1:8 minimized the adverse effects of the overgrowth of Bi<sub>2</sub>WO<sub>6</sub> on degradation performance by securing the quantity of vertical heterojunctions. The material degradation reaction energy barrier and bandgap were significantly reduced by the presence of a large number of vertical heterojunction structures, resulting in a material with lower impedance and higher electron–hole separation efficiency; thus, the degradation efficiency of 1:8 Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> for tetracycline hydrochloride reached 99% within 60 min. In conclusion, this study not only successfully synthesized a novel photocatalyst with potential applications in water pollution remediation but also introduced a pioneering approach for semiconductor-driven synthesis.https://www.mdpi.com/1420-3049/28/7/3123vertical heterojunctioncontrol growthbionicsBi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub>photocatalysis |
| spellingShingle | Yuanbo Sun Ziang Jia Ning Wan Wei Feng Biomimetic Guided Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> Vertical Heterojunction with Controllable Microstructure for Efficient Photocatalysis Molecules vertical heterojunction control growth bionics Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> photocatalysis |
| title | Biomimetic Guided Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> Vertical Heterojunction with Controllable Microstructure for Efficient Photocatalysis |
| title_full | Biomimetic Guided Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> Vertical Heterojunction with Controllable Microstructure for Efficient Photocatalysis |
| title_fullStr | Biomimetic Guided Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> Vertical Heterojunction with Controllable Microstructure for Efficient Photocatalysis |
| title_full_unstemmed | Biomimetic Guided Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> Vertical Heterojunction with Controllable Microstructure for Efficient Photocatalysis |
| title_short | Biomimetic Guided Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> Vertical Heterojunction with Controllable Microstructure for Efficient Photocatalysis |
| title_sort | biomimetic guided bi sub 2 sub wo sub 6 sub bi sub 2 sub o sub 3 sub vertical heterojunction with controllable microstructure for efficient photocatalysis |
| topic | vertical heterojunction control growth bionics Bi<sub>2</sub>WO<sub>6</sub>/Bi<sub>2</sub>O<sub>3</sub> photocatalysis |
| url | https://www.mdpi.com/1420-3049/28/7/3123 |
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