Cerium Synchronous Doping in Anatase for Enhanced Photocatalytic Hydrogen Production from Ethanol-Water Mixtures
Cerium element with a unique electric structure can be used to modify semiconductor photocatalysts to enhance their photocatalytic performances. In this work, Ce-doped TiO<sub>2</sub> (Ce/TiO<sub>2</sub>) was successfully achieved using the sol-gel method. The structural char...
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MDPI AG
2023-03-01
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| author | Mei-Hong Tong Yan-Xin Chen Tian-Ming Wang Shi-Wei Lin Gen Li Qian-Qian Zhou Rui Chen Xia Jiang Hong-Gang Liao Can-Zhong Lu |
| author_facet | Mei-Hong Tong Yan-Xin Chen Tian-Ming Wang Shi-Wei Lin Gen Li Qian-Qian Zhou Rui Chen Xia Jiang Hong-Gang Liao Can-Zhong Lu |
| author_sort | Mei-Hong Tong |
| collection | DOAJ |
| description | Cerium element with a unique electric structure can be used to modify semiconductor photocatalysts to enhance their photocatalytic performances. In this work, Ce-doped TiO<sub>2</sub> (Ce/TiO<sub>2</sub>) was successfully achieved using the sol-gel method. The structural characterization methods confirm that Ce was doped in the lattice of anatase TiO<sub>2</sub>, which led to a smaller grain size. The performance test results show that the Ce doped in anatase TiO<sub>2</sub> significantly enhances the charge transport efficiency and broadens the light absorption range, resulting in higher photocatalytic performance. The Ce/TiO<sub>2</sub> exhibited a photocurrent density of 10.9 μA/cm<sup>2</sup> at 1.0 V vs. Ag/AgCl, 2.5 times higher than that of pure TiO<sub>2</sub> (4.3 μA/cm<sup>2</sup>) under AM 1.5 G light. The hydrogen (H<sub>2</sub>) production rate of the Ce/TiO<sub>2</sub> was approximately 0.33 μmol/h/g, which is more than twice as much as that of the pure anatase TiO<sub>2</sub> (0.12 μmol/h/g). This work demonstrates the effect of Ce doping in the lattice of TiO<sub>2</sub> for enhanced photocatalytic hydrogen production. |
| first_indexed | 2024-03-11T06:08:39Z |
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| last_indexed | 2024-03-11T06:08:39Z |
| publishDate | 2023-03-01 |
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| series | Molecules |
| spelling | doaj.art-be22d25dba9043a0bb6198f65ef2061e2023-11-17T12:50:18ZengMDPI AGMolecules1420-30492023-03-01286243310.3390/molecules28062433Cerium Synchronous Doping in Anatase for Enhanced Photocatalytic Hydrogen Production from Ethanol-Water MixturesMei-Hong Tong0Yan-Xin Chen1Tian-Ming Wang2Shi-Wei Lin3Gen Li4Qian-Qian Zhou5Rui Chen6Xia Jiang7Hong-Gang Liao8Can-Zhong Lu9College of Chemistry, Fuzhou University, Fuzhou 350116, ChinaCollege of Chemistry, Fuzhou University, Fuzhou 350116, ChinaCAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaCAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaState Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, ChinaCAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaCAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaCAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaState Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, ChinaCAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaCerium element with a unique electric structure can be used to modify semiconductor photocatalysts to enhance their photocatalytic performances. In this work, Ce-doped TiO<sub>2</sub> (Ce/TiO<sub>2</sub>) was successfully achieved using the sol-gel method. The structural characterization methods confirm that Ce was doped in the lattice of anatase TiO<sub>2</sub>, which led to a smaller grain size. The performance test results show that the Ce doped in anatase TiO<sub>2</sub> significantly enhances the charge transport efficiency and broadens the light absorption range, resulting in higher photocatalytic performance. The Ce/TiO<sub>2</sub> exhibited a photocurrent density of 10.9 μA/cm<sup>2</sup> at 1.0 V vs. Ag/AgCl, 2.5 times higher than that of pure TiO<sub>2</sub> (4.3 μA/cm<sup>2</sup>) under AM 1.5 G light. The hydrogen (H<sub>2</sub>) production rate of the Ce/TiO<sub>2</sub> was approximately 0.33 μmol/h/g, which is more than twice as much as that of the pure anatase TiO<sub>2</sub> (0.12 μmol/h/g). This work demonstrates the effect of Ce doping in the lattice of TiO<sub>2</sub> for enhanced photocatalytic hydrogen production.https://www.mdpi.com/1420-3049/28/6/2433cerium-dopedTiO<sub>2</sub> nanoparticleslattice structurephotocatalyticphotoelectrochemical water splitting |
| spellingShingle | Mei-Hong Tong Yan-Xin Chen Tian-Ming Wang Shi-Wei Lin Gen Li Qian-Qian Zhou Rui Chen Xia Jiang Hong-Gang Liao Can-Zhong Lu Cerium Synchronous Doping in Anatase for Enhanced Photocatalytic Hydrogen Production from Ethanol-Water Mixtures Molecules cerium-doped TiO<sub>2</sub> nanoparticles lattice structure photocatalytic photoelectrochemical water splitting |
| title | Cerium Synchronous Doping in Anatase for Enhanced Photocatalytic Hydrogen Production from Ethanol-Water Mixtures |
| title_full | Cerium Synchronous Doping in Anatase for Enhanced Photocatalytic Hydrogen Production from Ethanol-Water Mixtures |
| title_fullStr | Cerium Synchronous Doping in Anatase for Enhanced Photocatalytic Hydrogen Production from Ethanol-Water Mixtures |
| title_full_unstemmed | Cerium Synchronous Doping in Anatase for Enhanced Photocatalytic Hydrogen Production from Ethanol-Water Mixtures |
| title_short | Cerium Synchronous Doping in Anatase for Enhanced Photocatalytic Hydrogen Production from Ethanol-Water Mixtures |
| title_sort | cerium synchronous doping in anatase for enhanced photocatalytic hydrogen production from ethanol water mixtures |
| topic | cerium-doped TiO<sub>2</sub> nanoparticles lattice structure photocatalytic photoelectrochemical water splitting |
| url | https://www.mdpi.com/1420-3049/28/6/2433 |
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