Synthesis of Tin-Doped Three-Dimensional Flower-like Bismuth Tungstate with Enhanced Photocatalytic Activity
Photocatalytic degradation of harmful organic matter is a feasible and environmentally friendly method. Bi<sub>2</sub>WO<sub>6</sub> has become a hotspot of photocatalysts because of its unique layered structure and visible light response. In the present study, Sn doping was...
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MDPI AG
2022-07-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/23/15/8422 |
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| author | Xiaodong Zhu Fengqiu Qin Xiuping Zhang Yuanyuan Zhong Juan Wang Yu Jiao Yuhao Luo Wei Feng |
| author_facet | Xiaodong Zhu Fengqiu Qin Xiuping Zhang Yuanyuan Zhong Juan Wang Yu Jiao Yuhao Luo Wei Feng |
| author_sort | Xiaodong Zhu |
| collection | DOAJ |
| description | Photocatalytic degradation of harmful organic matter is a feasible and environmentally friendly method. Bi<sub>2</sub>WO<sub>6</sub> has become a hotspot of photocatalysts because of its unique layered structure and visible light response. In the present study, Sn doping was adopted to modified Bi<sub>2</sub>WO<sub>6</sub> by hydrothermal method. The Sn-doped Bi<sub>2</sub>WO<sub>6</sub> photocatalysts were characterized by XRD, SEM, TEM, BET, XPS, PL, and DRS, respectively. The results show that Sn-doped Bi<sub>2</sub>WO<sub>6</sub> shows three-dimensional (3D) flower-like morphology, which is composed of two-dimensional (2D) nanosheets. Sn<sup>4+</sup> ions enter into the Bi<sub>2</sub>WO<sub>6</sub> lattice, producing a degree of Bi<sub>2</sub>WO<sub>6</sub> lattice distortion, which is in favor of reducing the recombination of photogenerated electrons and holes. Moreover, the specific surface area of Bi<sub>2</sub>WO<sub>6</sub> is significantly increased after doping, which is beneficial to providing more active sites. The photocatalytic results show that 2%Sn-Bi<sub>2</sub>WO<sub>6</sub> exhibits the highest photocatalytic activity. After 60 min of irradiation, the photocatalytic degradation degree of methylene blue (MB) increases from 80.6% for pure Bi<sub>2</sub>WO<sub>6</sub> to 92.0% for 2%Sn-Bi<sub>2</sub>WO<sub>6</sub>. The first-order reaction rate constant of 2%Sn-Bi<sub>2</sub>WO<sub>6</sub> is 0.030 min<sup>−1</sup>, which is 1.7 times than that of pure Bi<sub>2</sub>WO<sub>6</sub>. |
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| issn | 1661-6596 1422-0067 |
| language | English |
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| spelling | doaj.art-8af609b71dcb4138a2fc517efe5adc4b2023-11-30T22:27:39ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-07-012315842210.3390/ijms23158422Synthesis of Tin-Doped Three-Dimensional Flower-like Bismuth Tungstate with Enhanced Photocatalytic ActivityXiaodong Zhu0Fengqiu Qin1Xiuping Zhang2Yuanyuan Zhong3Juan Wang4Yu Jiao5Yuhao Luo6Wei Feng7School of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaSchool of Science, Xichang University, Xichang 615013, ChinaCollege of Materials and Chemistry & Chemiacl Engineering, Chengdu University of Technology, Chengdu 610051, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu 610106, ChinaPhotocatalytic degradation of harmful organic matter is a feasible and environmentally friendly method. Bi<sub>2</sub>WO<sub>6</sub> has become a hotspot of photocatalysts because of its unique layered structure and visible light response. In the present study, Sn doping was adopted to modified Bi<sub>2</sub>WO<sub>6</sub> by hydrothermal method. The Sn-doped Bi<sub>2</sub>WO<sub>6</sub> photocatalysts were characterized by XRD, SEM, TEM, BET, XPS, PL, and DRS, respectively. The results show that Sn-doped Bi<sub>2</sub>WO<sub>6</sub> shows three-dimensional (3D) flower-like morphology, which is composed of two-dimensional (2D) nanosheets. Sn<sup>4+</sup> ions enter into the Bi<sub>2</sub>WO<sub>6</sub> lattice, producing a degree of Bi<sub>2</sub>WO<sub>6</sub> lattice distortion, which is in favor of reducing the recombination of photogenerated electrons and holes. Moreover, the specific surface area of Bi<sub>2</sub>WO<sub>6</sub> is significantly increased after doping, which is beneficial to providing more active sites. The photocatalytic results show that 2%Sn-Bi<sub>2</sub>WO<sub>6</sub> exhibits the highest photocatalytic activity. After 60 min of irradiation, the photocatalytic degradation degree of methylene blue (MB) increases from 80.6% for pure Bi<sub>2</sub>WO<sub>6</sub> to 92.0% for 2%Sn-Bi<sub>2</sub>WO<sub>6</sub>. The first-order reaction rate constant of 2%Sn-Bi<sub>2</sub>WO<sub>6</sub> is 0.030 min<sup>−1</sup>, which is 1.7 times than that of pure Bi<sub>2</sub>WO<sub>6</sub>.https://www.mdpi.com/1422-0067/23/15/8422Bi<sub>2</sub>WO<sub>6</sub>Sn doping3D flower-likephotocatalytic activityhydrothermal method |
| spellingShingle | Xiaodong Zhu Fengqiu Qin Xiuping Zhang Yuanyuan Zhong Juan Wang Yu Jiao Yuhao Luo Wei Feng Synthesis of Tin-Doped Three-Dimensional Flower-like Bismuth Tungstate with Enhanced Photocatalytic Activity International Journal of Molecular Sciences Bi<sub>2</sub>WO<sub>6</sub> Sn doping 3D flower-like photocatalytic activity hydrothermal method |
| title | Synthesis of Tin-Doped Three-Dimensional Flower-like Bismuth Tungstate with Enhanced Photocatalytic Activity |
| title_full | Synthesis of Tin-Doped Three-Dimensional Flower-like Bismuth Tungstate with Enhanced Photocatalytic Activity |
| title_fullStr | Synthesis of Tin-Doped Three-Dimensional Flower-like Bismuth Tungstate with Enhanced Photocatalytic Activity |
| title_full_unstemmed | Synthesis of Tin-Doped Three-Dimensional Flower-like Bismuth Tungstate with Enhanced Photocatalytic Activity |
| title_short | Synthesis of Tin-Doped Three-Dimensional Flower-like Bismuth Tungstate with Enhanced Photocatalytic Activity |
| title_sort | synthesis of tin doped three dimensional flower like bismuth tungstate with enhanced photocatalytic activity |
| topic | Bi<sub>2</sub>WO<sub>6</sub> Sn doping 3D flower-like photocatalytic activity hydrothermal method |
| url | https://www.mdpi.com/1422-0067/23/15/8422 |
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