UV–vis light responsive Bi2WO6 nanosheet/TiO2 nanobelt heterojunction photo-catalyst for CO2 reduction
A series of Bi2WO6/TiO2 composite photocatalysts with different ratios of Bi2WO6 nanosheets to TiO2 nanobelts (1, ½, ⅓ and ¼) were synthesized by hydrothermal method and evaluated for CO2 photoreduction. The structural and optical properties of these photocatalysts were investigated by XRD, N2-physi...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Catalysis Communications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1566736723000833 |
| _version_ | 1797816069710151680 |
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| author | Maryam Ahmadi Seyed Mehdi Alavi Afsanehsadat Larimi |
| author_facet | Maryam Ahmadi Seyed Mehdi Alavi Afsanehsadat Larimi |
| author_sort | Maryam Ahmadi |
| collection | DOAJ |
| description | A series of Bi2WO6/TiO2 composite photocatalysts with different ratios of Bi2WO6 nanosheets to TiO2 nanobelts (1, ½, ⅓ and ¼) were synthesized by hydrothermal method and evaluated for CO2 photoreduction. The structural and optical properties of these photocatalysts were investigated by XRD, N2-physisorption, EDX, FESEM, Raman, TPD, DRS and PL. Bi2WO6/TiO₂ composite photocatalysts show enhanced CO2 adsorption capacity and coversion performance compared to both pure TiO₂ and bulk Bi2WO6. Loading Bi2WO6 nanosheets on TiO2 nanobelts leads to formation a heterojunction, which enhances the photocatalytic visible light performance by decreasing the recombination rate of photoinduced electron-hole pairs. The maximum CH4 production of 18.95 μmol/gcat in 8 h has been reported for composite with Bi2WO6/TiO₂ ratio of ½, which is 3 times higher than that of bulk Bi2WO6 and pure TiO2. |
| first_indexed | 2024-03-13T08:32:14Z |
| format | Article |
| id | doaj.art-b6ee815ca2814de0aaad9f74b50f5c89 |
| institution | Directory Open Access Journal |
| issn | 1873-3905 |
| language | English |
| last_indexed | 2024-03-13T08:32:14Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Catalysis Communications |
| spelling | doaj.art-b6ee815ca2814de0aaad9f74b50f5c892023-05-31T04:43:49ZengElsevierCatalysis Communications1873-39052023-06-01179106681UV–vis light responsive Bi2WO6 nanosheet/TiO2 nanobelt heterojunction photo-catalyst for CO2 reductionMaryam Ahmadi0Seyed Mehdi Alavi1Afsanehsadat Larimi2Catalyst and Nanomaterials Research Laboratory (CNMRL), School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, IranCatalyst and Nanomaterials Research Laboratory (CNMRL), School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, Iran; Corresponding authors.Department of Chemical and Process Engineering, Niroo Research Institute, Tehran, Iran; Corresponding authors.A series of Bi2WO6/TiO2 composite photocatalysts with different ratios of Bi2WO6 nanosheets to TiO2 nanobelts (1, ½, ⅓ and ¼) were synthesized by hydrothermal method and evaluated for CO2 photoreduction. The structural and optical properties of these photocatalysts were investigated by XRD, N2-physisorption, EDX, FESEM, Raman, TPD, DRS and PL. Bi2WO6/TiO₂ composite photocatalysts show enhanced CO2 adsorption capacity and coversion performance compared to both pure TiO₂ and bulk Bi2WO6. Loading Bi2WO6 nanosheets on TiO2 nanobelts leads to formation a heterojunction, which enhances the photocatalytic visible light performance by decreasing the recombination rate of photoinduced electron-hole pairs. The maximum CH4 production of 18.95 μmol/gcat in 8 h has been reported for composite with Bi2WO6/TiO₂ ratio of ½, which is 3 times higher than that of bulk Bi2WO6 and pure TiO2.http://www.sciencedirect.com/science/article/pii/S1566736723000833Bi2WO6TiO2PhotocatalystCO2 conversion |
| spellingShingle | Maryam Ahmadi Seyed Mehdi Alavi Afsanehsadat Larimi UV–vis light responsive Bi2WO6 nanosheet/TiO2 nanobelt heterojunction photo-catalyst for CO2 reduction Catalysis Communications Bi2WO6 TiO2 Photocatalyst CO2 conversion |
| title | UV–vis light responsive Bi2WO6 nanosheet/TiO2 nanobelt heterojunction photo-catalyst for CO2 reduction |
| title_full | UV–vis light responsive Bi2WO6 nanosheet/TiO2 nanobelt heterojunction photo-catalyst for CO2 reduction |
| title_fullStr | UV–vis light responsive Bi2WO6 nanosheet/TiO2 nanobelt heterojunction photo-catalyst for CO2 reduction |
| title_full_unstemmed | UV–vis light responsive Bi2WO6 nanosheet/TiO2 nanobelt heterojunction photo-catalyst for CO2 reduction |
| title_short | UV–vis light responsive Bi2WO6 nanosheet/TiO2 nanobelt heterojunction photo-catalyst for CO2 reduction |
| title_sort | uv vis light responsive bi2wo6 nanosheet tio2 nanobelt heterojunction photo catalyst for co2 reduction |
| topic | Bi2WO6 TiO2 Photocatalyst CO2 conversion |
| url | http://www.sciencedirect.com/science/article/pii/S1566736723000833 |
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