Universal Synthesis of Core–Shell‐Structured Ordered Mesoporous Transition Metal Dichalcogenides/Metal Oxides Heterostructures with Active Edge Sites
Two‐dimensional (2D) transition metal dichalcogenides (TMDs) are widely used in interfacial reactions and electronic devices due to their tunable bandgap and high efficiency of carrier transport. However, the lack of fully exposed active sites in bulk samples or stacked nanosheets leads to limited p...
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| Format: | Article |
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Wiley-VCH
2025-01-01
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| Series: | Small Structures |
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| Online Access: | https://doi.org/10.1002/sstr.202400376 |
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| author | Zhenliang Li Yujian Rao Zhehan Wang Tuo Zhang Guodong Wu Litao Sun Yuan Ren Li Tao |
| author_facet | Zhenliang Li Yujian Rao Zhehan Wang Tuo Zhang Guodong Wu Litao Sun Yuan Ren Li Tao |
| author_sort | Zhenliang Li |
| collection | DOAJ |
| description | Two‐dimensional (2D) transition metal dichalcogenides (TMDs) are widely used in interfacial reactions and electronic devices due to their tunable bandgap and high efficiency of carrier transport. However, the lack of fully exposed active sites in bulk samples or stacked nanosheets leads to limited performances. In this work, a general method is developed to construct ordered mesoporous TMDs/metal oxides (OM‐TMDs/MOs) heterostructures, including WS2/WO3, WSe2/WO3, WTe2/WO3, MoS2/MoO3, and V3S4/V2O3, through one‐step thermal sulfurization (selenidation/tellurization) of self‐assembled amphiphilic block copolymer/polyoxometalates clusters nanocomposites with ordered mesostructures. The OM‐TMDs/MOs possess highly OM structures with high specific surface area, large pore size, and rich active edge sites in the frameworks of heterostructures. The chemiresistive gas sensor based on OM‐WS2/WO3 shows excellent NO2‐sensing performances at room temperature, with high sensitivity, ultrahigh selectivity ( S NO 2 /S gas > 20), and fast response speed (6 s). Theoretical study reveals that the strong adsorption capacity of WS2/WO3 heterostructure and edge sites of WS2 for NO2 molecules and the high charge transfer between them contribute to high selectivity and sensitivity of the sensor. This universal method provides novel strategy for synthesis of OM TMDs‐based nanomaterials, showing great potential in various applications such as electronic devices, catalysis, energy storage, and conversions. |
| format | Article |
| id | doaj-art-56ba825634b14b83817cfb2d1f51369e |
| institution | Kabale University |
| issn | 2688-4062 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Small Structures |
| spelling | doaj-art-56ba825634b14b83817cfb2d1f51369e2025-01-10T17:54:14ZengWiley-VCHSmall Structures2688-40622025-01-0161n/an/a10.1002/sstr.202400376Universal Synthesis of Core–Shell‐Structured Ordered Mesoporous Transition Metal Dichalcogenides/Metal Oxides Heterostructures with Active Edge SitesZhenliang Li0Yujian Rao1Zhehan Wang2Tuo Zhang3Guodong Wu4Litao Sun5Yuan Ren6Li Tao7School of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic Materials Southeast University Nanjing 211189 ChinaSchool of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic Materials Southeast University Nanjing 211189 ChinaSchool of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic Materials Southeast University Nanjing 211189 ChinaSchool of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic Materials Southeast University Nanjing 211189 ChinaSchool of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic Materials Southeast University Nanjing 211189 ChinaCenter of 2D Materials and Devices Southeast University Nanjing 211189 ChinaSchool of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic Materials Southeast University Nanjing 211189 ChinaSchool of Materials Science and Engineering Jiangsu Key Laboratory for Advanced Metallic Materials Southeast University Nanjing 211189 ChinaTwo‐dimensional (2D) transition metal dichalcogenides (TMDs) are widely used in interfacial reactions and electronic devices due to their tunable bandgap and high efficiency of carrier transport. However, the lack of fully exposed active sites in bulk samples or stacked nanosheets leads to limited performances. In this work, a general method is developed to construct ordered mesoporous TMDs/metal oxides (OM‐TMDs/MOs) heterostructures, including WS2/WO3, WSe2/WO3, WTe2/WO3, MoS2/MoO3, and V3S4/V2O3, through one‐step thermal sulfurization (selenidation/tellurization) of self‐assembled amphiphilic block copolymer/polyoxometalates clusters nanocomposites with ordered mesostructures. The OM‐TMDs/MOs possess highly OM structures with high specific surface area, large pore size, and rich active edge sites in the frameworks of heterostructures. The chemiresistive gas sensor based on OM‐WS2/WO3 shows excellent NO2‐sensing performances at room temperature, with high sensitivity, ultrahigh selectivity ( S NO 2 /S gas > 20), and fast response speed (6 s). Theoretical study reveals that the strong adsorption capacity of WS2/WO3 heterostructure and edge sites of WS2 for NO2 molecules and the high charge transfer between them contribute to high selectivity and sensitivity of the sensor. This universal method provides novel strategy for synthesis of OM TMDs‐based nanomaterials, showing great potential in various applications such as electronic devices, catalysis, energy storage, and conversions.https://doi.org/10.1002/sstr.202400376block copolymersmesoporouspolyoxometalatesself‐assembliestransition metal dichalcogenides |
| spellingShingle | Zhenliang Li Yujian Rao Zhehan Wang Tuo Zhang Guodong Wu Litao Sun Yuan Ren Li Tao Universal Synthesis of Core–Shell‐Structured Ordered Mesoporous Transition Metal Dichalcogenides/Metal Oxides Heterostructures with Active Edge Sites Small Structures block copolymers mesoporous polyoxometalates self‐assemblies transition metal dichalcogenides |
| title | Universal Synthesis of Core–Shell‐Structured Ordered Mesoporous Transition Metal Dichalcogenides/Metal Oxides Heterostructures with Active Edge Sites |
| title_full | Universal Synthesis of Core–Shell‐Structured Ordered Mesoporous Transition Metal Dichalcogenides/Metal Oxides Heterostructures with Active Edge Sites |
| title_fullStr | Universal Synthesis of Core–Shell‐Structured Ordered Mesoporous Transition Metal Dichalcogenides/Metal Oxides Heterostructures with Active Edge Sites |
| title_full_unstemmed | Universal Synthesis of Core–Shell‐Structured Ordered Mesoporous Transition Metal Dichalcogenides/Metal Oxides Heterostructures with Active Edge Sites |
| title_short | Universal Synthesis of Core–Shell‐Structured Ordered Mesoporous Transition Metal Dichalcogenides/Metal Oxides Heterostructures with Active Edge Sites |
| title_sort | universal synthesis of core shell structured ordered mesoporous transition metal dichalcogenides metal oxides heterostructures with active edge sites |
| topic | block copolymers mesoporous polyoxometalates self‐assemblies transition metal dichalcogenides |
| url | https://doi.org/10.1002/sstr.202400376 |
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