Plasmon Sensitized Heterojunction 2D Ultrathin Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> for Enhanced Photocatalytic Nitrogen Fixation
A novel 2D ultrathin Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> photocatalyst was constructed by a facile hydrothermal and in situ photodeposition method, which presented a uniform nanosheet structure with an average height of 6 nm. Its composition, morphology and light-ha...
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MDPI AG
2019-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/9/5/781 |
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| author | Xiaoming Gao Yanyan Shang Kailong Gao Feng Fu |
| author_facet | Xiaoming Gao Yanyan Shang Kailong Gao Feng Fu |
| author_sort | Xiaoming Gao |
| collection | DOAJ |
| description | A novel 2D ultrathin Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> photocatalyst was constructed by a facile hydrothermal and in situ photodeposition method, which presented a uniform nanosheet structure with an average height of 6 nm. Its composition, morphology and light-harvesting properties were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV−vis spectrophotometer (UV−vis) and photoluminescence (PL) measurements in detail. The Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> nanocomposites showed an excellent photocatalytic nitrogen fixation performance of 420 μmol L<sup>−1</sup> g<sup>−1</sup> h<sup>−1</sup> in water without any sacrificial agent. The introduction of Ag/AgI nanoparticles caused the morphology modification of δ-Bi<sub>2</sub>O<sub>3</sub>, a higher concentration of oxygen vacancy, and the construction of a plasmon sensitized heterojunction, resulting in enhanced light absorption, improved separation efficiency of charge carriers and strong N<sub>2</sub> absorption and activation ability, which are responsible for the superior photocatalytic performance of Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub>. |
| first_indexed | 2024-04-12T09:51:56Z |
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| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-04-12T09:51:56Z |
| publishDate | 2019-05-01 |
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| series | Nanomaterials |
| spelling | doaj.art-3e96958c7c664724ae868e013959270e2022-12-22T03:37:48ZengMDPI AGNanomaterials2079-49912019-05-019578110.3390/nano9050781nano9050781Plasmon Sensitized Heterojunction 2D Ultrathin Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> for Enhanced Photocatalytic Nitrogen FixationXiaoming Gao0Yanyan Shang1Kailong Gao2Feng Fu3Department of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan’an University, Yanan 716000, ChinaDepartment of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan’an University, Yanan 716000, ChinaDepartment of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan’an University, Yanan 716000, ChinaDepartment of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan’an University, Yanan 716000, ChinaA novel 2D ultrathin Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> photocatalyst was constructed by a facile hydrothermal and in situ photodeposition method, which presented a uniform nanosheet structure with an average height of 6 nm. Its composition, morphology and light-harvesting properties were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV−vis spectrophotometer (UV−vis) and photoluminescence (PL) measurements in detail. The Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> nanocomposites showed an excellent photocatalytic nitrogen fixation performance of 420 μmol L<sup>−1</sup> g<sup>−1</sup> h<sup>−1</sup> in water without any sacrificial agent. The introduction of Ag/AgI nanoparticles caused the morphology modification of δ-Bi<sub>2</sub>O<sub>3</sub>, a higher concentration of oxygen vacancy, and the construction of a plasmon sensitized heterojunction, resulting in enhanced light absorption, improved separation efficiency of charge carriers and strong N<sub>2</sub> absorption and activation ability, which are responsible for the superior photocatalytic performance of Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub>.https://www.mdpi.com/2079-4991/9/5/781ultrathinheterojunctionplasmonphotocatalytic nitrogen fixation |
| spellingShingle | Xiaoming Gao Yanyan Shang Kailong Gao Feng Fu Plasmon Sensitized Heterojunction 2D Ultrathin Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> for Enhanced Photocatalytic Nitrogen Fixation Nanomaterials ultrathin heterojunction plasmon photocatalytic nitrogen fixation |
| title | Plasmon Sensitized Heterojunction 2D Ultrathin Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> for Enhanced Photocatalytic Nitrogen Fixation |
| title_full | Plasmon Sensitized Heterojunction 2D Ultrathin Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> for Enhanced Photocatalytic Nitrogen Fixation |
| title_fullStr | Plasmon Sensitized Heterojunction 2D Ultrathin Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> for Enhanced Photocatalytic Nitrogen Fixation |
| title_full_unstemmed | Plasmon Sensitized Heterojunction 2D Ultrathin Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> for Enhanced Photocatalytic Nitrogen Fixation |
| title_short | Plasmon Sensitized Heterojunction 2D Ultrathin Ag/AgI-δ-Bi<sub>2</sub>O<sub>3</sub> for Enhanced Photocatalytic Nitrogen Fixation |
| title_sort | plasmon sensitized heterojunction 2d ultrathin ag agi δ bi sub 2 sub o sub 3 sub for enhanced photocatalytic nitrogen fixation |
| topic | ultrathin heterojunction plasmon photocatalytic nitrogen fixation |
| url | https://www.mdpi.com/2079-4991/9/5/781 |
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