Ultrafast charge transfer in mixed-dimensional WO3-x nanowire/WSe2 heterostructures for attomolar-level molecular sensing
Abstract Developing efficient noble-metal-free surface-enhanced Raman scattering (SERS) substrates and unveiling the underlying mechanism is crucial for ultrasensitive molecular sensing. Herein, we report a facile synthesis of mixed-dimensional heterostructures via oxygen plasma treatments of two-di...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-05-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-38198-x |
| _version_ | 1797827437354024960 |
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| author | Qian Lv Junyang Tan Zhijie Wang Peng Gu Haiyun Liu Lingxiao Yu Yinping Wei Lin Gan Bilu Liu Jia Li Feiyu Kang Hui-Ming Cheng Qihua Xiong Ruitao Lv |
| author_facet | Qian Lv Junyang Tan Zhijie Wang Peng Gu Haiyun Liu Lingxiao Yu Yinping Wei Lin Gan Bilu Liu Jia Li Feiyu Kang Hui-Ming Cheng Qihua Xiong Ruitao Lv |
| author_sort | Qian Lv |
| collection | DOAJ |
| description | Abstract Developing efficient noble-metal-free surface-enhanced Raman scattering (SERS) substrates and unveiling the underlying mechanism is crucial for ultrasensitive molecular sensing. Herein, we report a facile synthesis of mixed-dimensional heterostructures via oxygen plasma treatments of two-dimensional (2D) materials. As a proof-of-concept, 1D/2D WO3-x /WSe2 heterostructures with good controllability and reproducibility are synthesized, in which 1D WO3-x nanowire patterns are laterally arranged along the three-fold symmetric directions of 2D WSe2. The WO3-x/WSe2 heterostructures exhibited high molecular sensitivity, with a limit of detection of 5 × 10−18 M and an enhancement factor of 5.0 × 1011 for methylene blue molecules, even in mixed solutions. We associate the ultrasensitive performance to the efficient charge transfer induced by the unique structures of 1D WO3-x nanowires and the effective interlayer coupling of the heterostructures. We observed a charge transfer timescale of around 1.0 picosecond via ultrafast transient spectroscopy. Our work provides an alternative strategy for the synthesis of 1D nanostructures from 2D materials and offers insights on the role of ultrafast charge transfer mechanisms in plasmon-free SERS-based molecular sensing. |
| first_indexed | 2024-04-09T12:48:17Z |
| format | Article |
| id | doaj.art-4f7eec27664646b99b81e9510050e04d |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-04-09T12:48:17Z |
| publishDate | 2023-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-4f7eec27664646b99b81e9510050e04d2023-05-14T11:21:28ZengNature PortfolioNature Communications2041-17232023-05-0114111010.1038/s41467-023-38198-xUltrafast charge transfer in mixed-dimensional WO3-x nanowire/WSe2 heterostructures for attomolar-level molecular sensingQian Lv0Junyang Tan1Zhijie Wang2Peng Gu3Haiyun Liu4Lingxiao Yu5Yinping Wei6Lin Gan7Bilu Liu8Jia Li9Feiyu Kang10Hui-Ming Cheng11Qihua Xiong12Ruitao Lv13State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua UniversityShenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua UniversityShenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua UniversityBeijing Academy of Quantum Information SciencesBeijing Academy of Quantum Information SciencesState Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua UniversityShenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua UniversityShenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua UniversityShenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua UniversityShenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua UniversityShenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua UniversityShenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research, Shenzhen International Graduate School, Tsinghua UniversityBeijing Academy of Quantum Information SciencesState Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua UniversityAbstract Developing efficient noble-metal-free surface-enhanced Raman scattering (SERS) substrates and unveiling the underlying mechanism is crucial for ultrasensitive molecular sensing. Herein, we report a facile synthesis of mixed-dimensional heterostructures via oxygen plasma treatments of two-dimensional (2D) materials. As a proof-of-concept, 1D/2D WO3-x /WSe2 heterostructures with good controllability and reproducibility are synthesized, in which 1D WO3-x nanowire patterns are laterally arranged along the three-fold symmetric directions of 2D WSe2. The WO3-x/WSe2 heterostructures exhibited high molecular sensitivity, with a limit of detection of 5 × 10−18 M and an enhancement factor of 5.0 × 1011 for methylene blue molecules, even in mixed solutions. We associate the ultrasensitive performance to the efficient charge transfer induced by the unique structures of 1D WO3-x nanowires and the effective interlayer coupling of the heterostructures. We observed a charge transfer timescale of around 1.0 picosecond via ultrafast transient spectroscopy. Our work provides an alternative strategy for the synthesis of 1D nanostructures from 2D materials and offers insights on the role of ultrafast charge transfer mechanisms in plasmon-free SERS-based molecular sensing.https://doi.org/10.1038/s41467-023-38198-x |
| spellingShingle | Qian Lv Junyang Tan Zhijie Wang Peng Gu Haiyun Liu Lingxiao Yu Yinping Wei Lin Gan Bilu Liu Jia Li Feiyu Kang Hui-Ming Cheng Qihua Xiong Ruitao Lv Ultrafast charge transfer in mixed-dimensional WO3-x nanowire/WSe2 heterostructures for attomolar-level molecular sensing Nature Communications |
| title | Ultrafast charge transfer in mixed-dimensional WO3-x nanowire/WSe2 heterostructures for attomolar-level molecular sensing |
| title_full | Ultrafast charge transfer in mixed-dimensional WO3-x nanowire/WSe2 heterostructures for attomolar-level molecular sensing |
| title_fullStr | Ultrafast charge transfer in mixed-dimensional WO3-x nanowire/WSe2 heterostructures for attomolar-level molecular sensing |
| title_full_unstemmed | Ultrafast charge transfer in mixed-dimensional WO3-x nanowire/WSe2 heterostructures for attomolar-level molecular sensing |
| title_short | Ultrafast charge transfer in mixed-dimensional WO3-x nanowire/WSe2 heterostructures for attomolar-level molecular sensing |
| title_sort | ultrafast charge transfer in mixed dimensional wo3 x nanowire wse2 heterostructures for attomolar level molecular sensing |
| url | https://doi.org/10.1038/s41467-023-38198-x |
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