Efficient Production of Solar Hydrogen Peroxide Using Piezoelectric Polarization and Photoinduced Charge Transfer of Nanopiezoelectrics Sensitized by Carbon Quantum Dots
Abstract Piezoelectric semiconductors have emerged as redox catalysts, and challenges include effective conversion of mechanical energy to piezoelectric polarization and achieving high catalytic activity. The catalytic activity can be enhanced by simultaneous irradiation of ultrasound and light, but...
| Main Authors: | , , , , , , |
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| Format: | Article |
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Wiley
2022-06-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202105792 |
| _version_ | 1818256213834465280 |
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| author | Xiaofeng Zhou Fei Yan Alexander Lyubartsev Bo Shen Jiwei Zhai José C. Conesa Niklas Hedin |
| author_facet | Xiaofeng Zhou Fei Yan Alexander Lyubartsev Bo Shen Jiwei Zhai José C. Conesa Niklas Hedin |
| author_sort | Xiaofeng Zhou |
| collection | DOAJ |
| description | Abstract Piezoelectric semiconductors have emerged as redox catalysts, and challenges include effective conversion of mechanical energy to piezoelectric polarization and achieving high catalytic activity. The catalytic activity can be enhanced by simultaneous irradiation of ultrasound and light, but the existing piezoelectric semiconductors have trouble absorbing visible light. A piezoelectric catalyst is designed and tested for the generation of hydrogen peroxide (H2O2). It is based on Nb‐doped tetragonal BaTiO3 (BaTiO3:Nb) and is sensitized by carbon quantum dots (CDs). The photosensitizer injects electrons into the conduction band of the semiconductor, while the piezoelectric polarization directed electrons to the semiconductor surface, allowing for a high‐rate generation of H2O2. The piezoelectric polarization field restricts the recombination of photoinduced electron–hole pairs. A production rate of 1360 µmol gcatalyst−1 h−1 of H2O2 is achieved under visible light and ultrasound co‐irradiation. Individual piezo‐ and photocatalysis yielded lower production rates. Furthermore, the CDs enhance the piezocatalytic activity of the BaTiO3:Nb. It is noted that moderating the piezoelectricity of BaTiO3:Nb via microstructure modulation influences the piezophotocatalytic activity. This work shows a new methodology for synthesizing H2O2 by using visible light and mechanical energy. |
| first_indexed | 2024-12-12T17:24:11Z |
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| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-12T17:24:11Z |
| publishDate | 2022-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-dc5216b6e1614793967753f440d2c1952022-12-22T00:17:34ZengWileyAdvanced Science2198-38442022-06-01918n/an/a10.1002/advs.202105792Efficient Production of Solar Hydrogen Peroxide Using Piezoelectric Polarization and Photoinduced Charge Transfer of Nanopiezoelectrics Sensitized by Carbon Quantum DotsXiaofeng Zhou0Fei Yan1Alexander Lyubartsev2Bo Shen3Jiwei Zhai4José C. Conesa5Niklas Hedin6Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials Functional Materials Research Laboratory School of Materials Science and Engineering Tongji University Shanghai 201804 ChinaShanghai Key Laboratory for R&D and Application of Metallic Functional Materials Functional Materials Research Laboratory School of Materials Science and Engineering Tongji University Shanghai 201804 ChinaDepartment of Materials and Environmental Chemistry Stockholm University Stockholm SE 106 91 SwedenShanghai Key Laboratory for R&D and Application of Metallic Functional Materials Functional Materials Research Laboratory School of Materials Science and Engineering Tongji University Shanghai 201804 ChinaShanghai Key Laboratory for R&D and Application of Metallic Functional Materials Functional Materials Research Laboratory School of Materials Science and Engineering Tongji University Shanghai 201804 ChinaInstitute of Catalysis and Petrochemistry CSIC Marie Curie 2 Cantoblanco Madrid 28049 SpainDepartment of Materials and Environmental Chemistry Stockholm University Stockholm SE 106 91 SwedenAbstract Piezoelectric semiconductors have emerged as redox catalysts, and challenges include effective conversion of mechanical energy to piezoelectric polarization and achieving high catalytic activity. The catalytic activity can be enhanced by simultaneous irradiation of ultrasound and light, but the existing piezoelectric semiconductors have trouble absorbing visible light. A piezoelectric catalyst is designed and tested for the generation of hydrogen peroxide (H2O2). It is based on Nb‐doped tetragonal BaTiO3 (BaTiO3:Nb) and is sensitized by carbon quantum dots (CDs). The photosensitizer injects electrons into the conduction band of the semiconductor, while the piezoelectric polarization directed electrons to the semiconductor surface, allowing for a high‐rate generation of H2O2. The piezoelectric polarization field restricts the recombination of photoinduced electron–hole pairs. A production rate of 1360 µmol gcatalyst−1 h−1 of H2O2 is achieved under visible light and ultrasound co‐irradiation. Individual piezo‐ and photocatalysis yielded lower production rates. Furthermore, the CDs enhance the piezocatalytic activity of the BaTiO3:Nb. It is noted that moderating the piezoelectricity of BaTiO3:Nb via microstructure modulation influences the piezophotocatalytic activity. This work shows a new methodology for synthesizing H2O2 by using visible light and mechanical energy.https://doi.org/10.1002/advs.202105792carbon quantum dotshydrogen peroxideNb‐doped BaTiO3piezocatalysispiezoelectric polarizationpiezophotocatalysis |
| spellingShingle | Xiaofeng Zhou Fei Yan Alexander Lyubartsev Bo Shen Jiwei Zhai José C. Conesa Niklas Hedin Efficient Production of Solar Hydrogen Peroxide Using Piezoelectric Polarization and Photoinduced Charge Transfer of Nanopiezoelectrics Sensitized by Carbon Quantum Dots Advanced Science carbon quantum dots hydrogen peroxide Nb‐doped BaTiO3 piezocatalysis piezoelectric polarization piezophotocatalysis |
| title | Efficient Production of Solar Hydrogen Peroxide Using Piezoelectric Polarization and Photoinduced Charge Transfer of Nanopiezoelectrics Sensitized by Carbon Quantum Dots |
| title_full | Efficient Production of Solar Hydrogen Peroxide Using Piezoelectric Polarization and Photoinduced Charge Transfer of Nanopiezoelectrics Sensitized by Carbon Quantum Dots |
| title_fullStr | Efficient Production of Solar Hydrogen Peroxide Using Piezoelectric Polarization and Photoinduced Charge Transfer of Nanopiezoelectrics Sensitized by Carbon Quantum Dots |
| title_full_unstemmed | Efficient Production of Solar Hydrogen Peroxide Using Piezoelectric Polarization and Photoinduced Charge Transfer of Nanopiezoelectrics Sensitized by Carbon Quantum Dots |
| title_short | Efficient Production of Solar Hydrogen Peroxide Using Piezoelectric Polarization and Photoinduced Charge Transfer of Nanopiezoelectrics Sensitized by Carbon Quantum Dots |
| title_sort | efficient production of solar hydrogen peroxide using piezoelectric polarization and photoinduced charge transfer of nanopiezoelectrics sensitized by carbon quantum dots |
| topic | carbon quantum dots hydrogen peroxide Nb‐doped BaTiO3 piezocatalysis piezoelectric polarization piezophotocatalysis |
| url | https://doi.org/10.1002/advs.202105792 |
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