Synthesis of Silver Nanoparticles-Modified Graphitic Carbon Nitride Nanosheets for Highly Efficient Photocatalytic Hydrogen Peroxide Evolution
As a promising metal-free photocatalyst, graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) is still limited by insufficient visible light absorption and rapid recombination of photogenerated carriers, resulting in low photocatalytic activity. Here, we adjusted the micro...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-08-01
|
| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/27/17/5535 |
| _version_ | 1797494104478711808 |
|---|---|
| author | Jixiang Hou Xu Zhang Kaiwen Wang Peijie Ma Hanwen Hu Xiyuan Zhou Kun Zheng |
| author_facet | Jixiang Hou Xu Zhang Kaiwen Wang Peijie Ma Hanwen Hu Xiyuan Zhou Kun Zheng |
| author_sort | Jixiang Hou |
| collection | DOAJ |
| description | As a promising metal-free photocatalyst, graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) is still limited by insufficient visible light absorption and rapid recombination of photogenerated carriers, resulting in low photocatalytic activity. Here, we adjusted the microstructure of the pristine bulk-g-C<sub>3</sub>N<sub>4</sub> (PCN) and further loaded silver (Ag) nanoparticles. Abundant Ag nanoparticles were grown on the thin-layer g-C<sub>3</sub>N<sub>4</sub> nanosheets (CNNS), and the Ag nanoparticles decorated g-C<sub>3</sub>N<sub>4</sub> nanosheets (Ag@CNNS) were successfully synthesized. The thin-layer nanosheet-like structure was not only beneficial for the loading of Ag nanoparticles but also for the adsorption and activation of reactants via exposing more active sites. Moreover, the surface plasmon resonance (SPR) effect induced by Ag nanoparticles enhanced the absorption of visible light by narrowing the band gap of the substrate. Meanwhile, the composite band structure effectively promoted the separation and transfer of carriers. Benefiting from these merits, the Ag@CNNS reached a superior hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) yield of 120.53 μmol/g/h under visible light irradiation in pure water (about 8.0 times higher than that of PCN), significantly surpassing most previous reports. The design method of manipulating the microstructure of the catalyst combined with the modification of metal nanoparticles provides a new idea for the rational development and application of efficient photocatalysts. |
| first_indexed | 2024-03-10T01:29:31Z |
| format | Article |
| id | doaj.art-3f95318650454e4fbc8ea21e26ee246d |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T01:29:31Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-3f95318650454e4fbc8ea21e26ee246d2023-11-23T13:43:40ZengMDPI AGMolecules1420-30492022-08-012717553510.3390/molecules27175535Synthesis of Silver Nanoparticles-Modified Graphitic Carbon Nitride Nanosheets for Highly Efficient Photocatalytic Hydrogen Peroxide EvolutionJixiang Hou0Xu Zhang1Kaiwen Wang2Peijie Ma3Hanwen Hu4Xiyuan Zhou5Kun Zheng6Beijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaBeijing Key Laboratory of Microstructure and Properties of Solids, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaAs a promising metal-free photocatalyst, graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) is still limited by insufficient visible light absorption and rapid recombination of photogenerated carriers, resulting in low photocatalytic activity. Here, we adjusted the microstructure of the pristine bulk-g-C<sub>3</sub>N<sub>4</sub> (PCN) and further loaded silver (Ag) nanoparticles. Abundant Ag nanoparticles were grown on the thin-layer g-C<sub>3</sub>N<sub>4</sub> nanosheets (CNNS), and the Ag nanoparticles decorated g-C<sub>3</sub>N<sub>4</sub> nanosheets (Ag@CNNS) were successfully synthesized. The thin-layer nanosheet-like structure was not only beneficial for the loading of Ag nanoparticles but also for the adsorption and activation of reactants via exposing more active sites. Moreover, the surface plasmon resonance (SPR) effect induced by Ag nanoparticles enhanced the absorption of visible light by narrowing the band gap of the substrate. Meanwhile, the composite band structure effectively promoted the separation and transfer of carriers. Benefiting from these merits, the Ag@CNNS reached a superior hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) yield of 120.53 μmol/g/h under visible light irradiation in pure water (about 8.0 times higher than that of PCN), significantly surpassing most previous reports. The design method of manipulating the microstructure of the catalyst combined with the modification of metal nanoparticles provides a new idea for the rational development and application of efficient photocatalysts.https://www.mdpi.com/1420-3049/27/17/5535carbon nitridehydrogen peroxidemicrostructure manipulationmetal nanoparticle modificationphotocatalyst |
| spellingShingle | Jixiang Hou Xu Zhang Kaiwen Wang Peijie Ma Hanwen Hu Xiyuan Zhou Kun Zheng Synthesis of Silver Nanoparticles-Modified Graphitic Carbon Nitride Nanosheets for Highly Efficient Photocatalytic Hydrogen Peroxide Evolution Molecules carbon nitride hydrogen peroxide microstructure manipulation metal nanoparticle modification photocatalyst |
| title | Synthesis of Silver Nanoparticles-Modified Graphitic Carbon Nitride Nanosheets for Highly Efficient Photocatalytic Hydrogen Peroxide Evolution |
| title_full | Synthesis of Silver Nanoparticles-Modified Graphitic Carbon Nitride Nanosheets for Highly Efficient Photocatalytic Hydrogen Peroxide Evolution |
| title_fullStr | Synthesis of Silver Nanoparticles-Modified Graphitic Carbon Nitride Nanosheets for Highly Efficient Photocatalytic Hydrogen Peroxide Evolution |
| title_full_unstemmed | Synthesis of Silver Nanoparticles-Modified Graphitic Carbon Nitride Nanosheets for Highly Efficient Photocatalytic Hydrogen Peroxide Evolution |
| title_short | Synthesis of Silver Nanoparticles-Modified Graphitic Carbon Nitride Nanosheets for Highly Efficient Photocatalytic Hydrogen Peroxide Evolution |
| title_sort | synthesis of silver nanoparticles modified graphitic carbon nitride nanosheets for highly efficient photocatalytic hydrogen peroxide evolution |
| topic | carbon nitride hydrogen peroxide microstructure manipulation metal nanoparticle modification photocatalyst |
| url | https://www.mdpi.com/1420-3049/27/17/5535 |
| work_keys_str_mv | AT jixianghou synthesisofsilvernanoparticlesmodifiedgraphiticcarbonnitridenanosheetsforhighlyefficientphotocatalytichydrogenperoxideevolution AT xuzhang synthesisofsilvernanoparticlesmodifiedgraphiticcarbonnitridenanosheetsforhighlyefficientphotocatalytichydrogenperoxideevolution AT kaiwenwang synthesisofsilvernanoparticlesmodifiedgraphiticcarbonnitridenanosheetsforhighlyefficientphotocatalytichydrogenperoxideevolution AT peijiema synthesisofsilvernanoparticlesmodifiedgraphiticcarbonnitridenanosheetsforhighlyefficientphotocatalytichydrogenperoxideevolution AT hanwenhu synthesisofsilvernanoparticlesmodifiedgraphiticcarbonnitridenanosheetsforhighlyefficientphotocatalytichydrogenperoxideevolution AT xiyuanzhou synthesisofsilvernanoparticlesmodifiedgraphiticcarbonnitridenanosheetsforhighlyefficientphotocatalytichydrogenperoxideevolution AT kunzheng synthesisofsilvernanoparticlesmodifiedgraphiticcarbonnitridenanosheetsforhighlyefficientphotocatalytichydrogenperoxideevolution |