Preparation of CuS/PbS/ZnO Heterojunction Photocatalyst for Application in Hydrogen Production
A hexagonal wurtzite ZnO photocatalyst was prepared via a precipitation method. CuS nanoparticles (NPs) and PbS quantum dots (QDs) were loaded onto ZnO via a hydrothermal method to obtain a CuS/PbS/ZnO heterojunction photocatalyst. The CuS/PbS/ZnO photocatalyst obtained via the abovementioned method...
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MDPI AG
2022-12-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/12/1677 |
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| author | Ming-Huan Chiu Cheng-Ching Kuo Chao-Wei Huang Wein-Duo Yang |
| author_facet | Ming-Huan Chiu Cheng-Ching Kuo Chao-Wei Huang Wein-Duo Yang |
| author_sort | Ming-Huan Chiu |
| collection | DOAJ |
| description | A hexagonal wurtzite ZnO photocatalyst was prepared via a precipitation method. CuS nanoparticles (NPs) and PbS quantum dots (QDs) were loaded onto ZnO via a hydrothermal method to obtain a CuS/PbS/ZnO heterojunction photocatalyst. The CuS/PbS/ZnO photocatalyst obtained via the abovementioned method has significant absorption capabilities in the ultraviolet to near-infrared spectral regions, and effectively reduced the recombination of electron–hole pairs during a photocatalytic reaction. Electron microscope images showed that in the CuS/PbS/ZnO photocatalyst prepared at 130 °C, the particle size of the PbS QDs was approximately 5.5–5.7 nm, and the bandgap determined from the Tauc plot was 0.84 eV; this catalyst demonstrated the best water splitting effect. Furthermore, after adding a 0.25 M mixed solution of Na<sub>2</sub>S and Na<sub>2</sub>SO<sub>3</sub> as the sacrificial reagent in photocatalysis for 5 h, the hydrogen production efficiency from water splitting reached 6654 μmol g<sup>−1</sup> h<sup>−1</sup>. |
| first_indexed | 2024-03-09T17:13:39Z |
| format | Article |
| id | doaj.art-ba8aef6f220045198ac34fcfdeb53f40 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T17:13:39Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-ba8aef6f220045198ac34fcfdeb53f402023-11-24T13:53:08ZengMDPI AGCatalysts2073-43442022-12-011212167710.3390/catal12121677Preparation of CuS/PbS/ZnO Heterojunction Photocatalyst for Application in Hydrogen ProductionMing-Huan Chiu0Cheng-Ching Kuo1Chao-Wei Huang2Wein-Duo Yang3Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807, TaiwanDepartment of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807, TaiwanDepartment of Engineering Science, National Cheng Kung University, Tainan 701, TaiwanDepartment of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807, TaiwanA hexagonal wurtzite ZnO photocatalyst was prepared via a precipitation method. CuS nanoparticles (NPs) and PbS quantum dots (QDs) were loaded onto ZnO via a hydrothermal method to obtain a CuS/PbS/ZnO heterojunction photocatalyst. The CuS/PbS/ZnO photocatalyst obtained via the abovementioned method has significant absorption capabilities in the ultraviolet to near-infrared spectral regions, and effectively reduced the recombination of electron–hole pairs during a photocatalytic reaction. Electron microscope images showed that in the CuS/PbS/ZnO photocatalyst prepared at 130 °C, the particle size of the PbS QDs was approximately 5.5–5.7 nm, and the bandgap determined from the Tauc plot was 0.84 eV; this catalyst demonstrated the best water splitting effect. Furthermore, after adding a 0.25 M mixed solution of Na<sub>2</sub>S and Na<sub>2</sub>SO<sub>3</sub> as the sacrificial reagent in photocatalysis for 5 h, the hydrogen production efficiency from water splitting reached 6654 μmol g<sup>−1</sup> h<sup>−1</sup>.https://www.mdpi.com/2073-4344/12/12/1677heterojunctionCuS/PbS/ZnOphotocatalysthydrogen productionsacrificial reagent |
| spellingShingle | Ming-Huan Chiu Cheng-Ching Kuo Chao-Wei Huang Wein-Duo Yang Preparation of CuS/PbS/ZnO Heterojunction Photocatalyst for Application in Hydrogen Production Catalysts heterojunction CuS/PbS/ZnO photocatalyst hydrogen production sacrificial reagent |
| title | Preparation of CuS/PbS/ZnO Heterojunction Photocatalyst for Application in Hydrogen Production |
| title_full | Preparation of CuS/PbS/ZnO Heterojunction Photocatalyst for Application in Hydrogen Production |
| title_fullStr | Preparation of CuS/PbS/ZnO Heterojunction Photocatalyst for Application in Hydrogen Production |
| title_full_unstemmed | Preparation of CuS/PbS/ZnO Heterojunction Photocatalyst for Application in Hydrogen Production |
| title_short | Preparation of CuS/PbS/ZnO Heterojunction Photocatalyst for Application in Hydrogen Production |
| title_sort | preparation of cus pbs zno heterojunction photocatalyst for application in hydrogen production |
| topic | heterojunction CuS/PbS/ZnO photocatalyst hydrogen production sacrificial reagent |
| url | https://www.mdpi.com/2073-4344/12/12/1677 |
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