Effect of SiO2 aerogels loading on photocatalytic degradation of nitrobenzene using composites with tetrapod-like ZnO
To study the effect of improved adsorption property of tetrapod-like ZnO (T-ZnO) on its photocatalytic performance, a new composite was prepared by loading silica aerogels (SiO2(AG)) on the surface of T-ZnO via the sol–gel method. Various characterization methods showed that SiO2(AG) was uniformly l...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2020-10-01
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| Series: | Nanotechnology Reviews |
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| Online Access: | https://doi.org/10.1515/ntrev-2020-0081 |
| _version_ | 1818598284234588160 |
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| author | Yi Zhigang Jiang Tao Cheng Ying Tang Qiong |
| author_facet | Yi Zhigang Jiang Tao Cheng Ying Tang Qiong |
| author_sort | Yi Zhigang |
| collection | DOAJ |
| description | To study the effect of improved adsorption property of tetrapod-like ZnO (T-ZnO) on its photocatalytic performance, a new composite was prepared by loading silica aerogels (SiO2(AG)) on the surface of T-ZnO via the sol–gel method. Various characterization methods showed that SiO2(AG) was uniformly loaded on the surface of T-ZnO, and the morphology as well as structural characteristics of SiO2(AG) and T-ZnO were not changed. Nitrobenzene (NB) was selected as the model pollutant, and the adsorption and photocatalytic properties of T-ZnO and SiO2(AG)/T-ZnO for NB were studied. The photocatalytic degradation processes of NB using T-ZnO and SiO2(AG)/T-ZnO followed the first-order reaction. Considering the initial moment reaction kinetic, the photocatalytic kinetic of SiO2(AG)/T-ZnO and T-ZnO was consistent with the Langmuir–Hinshelwood kinetic model, and reaction rate constant kSiO2AG/T-ZnO′>kT-ZnO′{k}_{{\text{SiO}}_{2}\left(\text{AG}\right)/\text{T-ZnO}}^{^{\prime} }\gt {k}_{\text{T-ZnO}}^{^{\prime} }, adsorption rate constant KadSiO2(AG)/T-ZnO{K}_{\text{ad}{\text{SiO}}_{2}(\text{AG})/\text{T-ZnO}} > K
ad T-ZnO, which demonstrated that SiO2(AG) loading could increase T-ZnO adsorption to NB, then promoted its photocatalytic performance. |
| first_indexed | 2024-12-16T12:01:15Z |
| format | Article |
| id | doaj.art-6775a38930f244158ef9e3fd46e83ca8 |
| institution | Directory Open Access Journal |
| issn | 2191-9097 |
| language | English |
| last_indexed | 2024-12-16T12:01:15Z |
| publishDate | 2020-10-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanotechnology Reviews |
| spelling | doaj.art-6775a38930f244158ef9e3fd46e83ca82022-12-21T22:32:27ZengDe GruyterNanotechnology Reviews2191-90972020-10-01911009101610.1515/ntrev-2020-0081ntrev-2020-0081Effect of SiO2 aerogels loading on photocatalytic degradation of nitrobenzene using composites with tetrapod-like ZnOYi Zhigang0Jiang Tao1Cheng Ying2Tang Qiong3Department of Chemistry, Leshan Normal University, Leshan, 614004, ChinaDepartment of Chemistry, Leshan Normal University, Leshan, 614004, ChinaDepartment of Chemistry, Leshan Normal University, Leshan, 614004, ChinaDepartment of Chemistry, Leshan Normal University, Leshan, 614004, ChinaTo study the effect of improved adsorption property of tetrapod-like ZnO (T-ZnO) on its photocatalytic performance, a new composite was prepared by loading silica aerogels (SiO2(AG)) on the surface of T-ZnO via the sol–gel method. Various characterization methods showed that SiO2(AG) was uniformly loaded on the surface of T-ZnO, and the morphology as well as structural characteristics of SiO2(AG) and T-ZnO were not changed. Nitrobenzene (NB) was selected as the model pollutant, and the adsorption and photocatalytic properties of T-ZnO and SiO2(AG)/T-ZnO for NB were studied. The photocatalytic degradation processes of NB using T-ZnO and SiO2(AG)/T-ZnO followed the first-order reaction. Considering the initial moment reaction kinetic, the photocatalytic kinetic of SiO2(AG)/T-ZnO and T-ZnO was consistent with the Langmuir–Hinshelwood kinetic model, and reaction rate constant kSiO2AG/T-ZnO′>kT-ZnO′{k}_{{\text{SiO}}_{2}\left(\text{AG}\right)/\text{T-ZnO}}^{^{\prime} }\gt {k}_{\text{T-ZnO}}^{^{\prime} }, adsorption rate constant KadSiO2(AG)/T-ZnO{K}_{\text{ad}{\text{SiO}}_{2}(\text{AG})/\text{T-ZnO}} > K ad T-ZnO, which demonstrated that SiO2(AG) loading could increase T-ZnO adsorption to NB, then promoted its photocatalytic performance.https://doi.org/10.1515/ntrev-2020-0081silica aerogelstetrapod-like zinc oxideadsorption propertyphotocatalytic performancenitrobenzene |
| spellingShingle | Yi Zhigang Jiang Tao Cheng Ying Tang Qiong Effect of SiO2 aerogels loading on photocatalytic degradation of nitrobenzene using composites with tetrapod-like ZnO Nanotechnology Reviews silica aerogels tetrapod-like zinc oxide adsorption property photocatalytic performance nitrobenzene |
| title | Effect of SiO2 aerogels loading on photocatalytic degradation of nitrobenzene using composites with tetrapod-like ZnO |
| title_full | Effect of SiO2 aerogels loading on photocatalytic degradation of nitrobenzene using composites with tetrapod-like ZnO |
| title_fullStr | Effect of SiO2 aerogels loading on photocatalytic degradation of nitrobenzene using composites with tetrapod-like ZnO |
| title_full_unstemmed | Effect of SiO2 aerogels loading on photocatalytic degradation of nitrobenzene using composites with tetrapod-like ZnO |
| title_short | Effect of SiO2 aerogels loading on photocatalytic degradation of nitrobenzene using composites with tetrapod-like ZnO |
| title_sort | effect of sio2 aerogels loading on photocatalytic degradation of nitrobenzene using composites with tetrapod like zno |
| topic | silica aerogels tetrapod-like zinc oxide adsorption property photocatalytic performance nitrobenzene |
| url | https://doi.org/10.1515/ntrev-2020-0081 |
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