Metal-Organic Framework-Assisted Construction of TiO                         2                         /Co                         3                         O                         4                          Highly Ordered Necklace-like Heterostructures for Enhanced Ethanol Vapor Sensing Performance

Tian Zhang; Xing Tang; Jian Zhang; Tingting Zhou; Hao Wang; Congyi Wu; Xianping Xia; Changsheng Xie; Dawen Zeng

doi:10.1021/acs.langmuir.8b02620

Metal-Organic Framework-Assisted Construction of TiO ₂ /Co ₃ O ₄ Highly Ordered Necklace-like Heterostructures for Enhanced Ethanol Vapor Sensing Performance

Tian Zhang, Xing Tang, Jian Zhang, Tingting Zhou, Hao Wang, Congyi Wu, Xianping Xia^*, Changsheng Xie, Dawen Zeng

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

51 Citations (Scopus)

Abstract

In this work, we report a metal-organic framework (MOF)-assisted strategy to synthesize necklace-like TiO ₂ /Co ₃ O ₄ nanofibers with highly ordered heterostructures via a facile approach including electrospinning and subsequent calcination. Polycrystalline TiO ₂ nanofibers and Co ₃ O ₄ nanocages are consummately interconnected to form a highly ordered heterogeneous nanostructure, which can be of benefit for precisely accommodating the interface resistance of the p-n heterojunctions and the future realization of improved material performance. The ethanol-gas-sensing investigation showed that TiO ₂ /Co ₃ O ₄ nanofiber sensors exhibited a strong ethanol response (R _air /R _gas -1 = 16.7 @ 150 ppm) and a low operating temperature of 150 °C. The sensing enhancement mechanism of the TiO ₂ /Co ₃ O ₄ nanofibers is related to the formation of heterojunctions at interfaces and the high catalytic activity of MOF-derived Co ₃ O ₄ . Furthermore, this versatile method is a promising approach to constructing ordered heterostructures and extending the MOF-based heterogeneous materials toward wide applications.

Original language	English
Pages (from-to)	14577-14585
Number of pages	9
Journal	Langmuir
Volume	34
Issue number	48
DOIs	https://doi.org/10.1021/acs.langmuir.8b02620
Publication status	Published - 4 Dec 2018

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Zhang, T., Tang, X., Zhang, J., Zhou, T., Wang, H., Wu, C., Xia, X., Xie, C., & Zeng, D. (2018). Metal-Organic Framework-Assisted Construction of TiO ₂ /Co ₃ O ₄ Highly Ordered Necklace-like Heterostructures for Enhanced Ethanol Vapor Sensing Performance Langmuir, 34(48), 14577-14585. https://doi.org/10.1021/acs.langmuir.8b02620

Zhang, Tian ; Tang, Xing ; Zhang, Jian et al. / Metal-Organic Framework-Assisted Construction of TiO ₂ /Co ₃ O ₄ Highly Ordered Necklace-like Heterostructures for Enhanced Ethanol Vapor Sensing Performance In: Langmuir. 2018 ; Vol. 34, No. 48. pp. 14577-14585.

@article{13453c1214ed469f90143bc9b8812920,

title = " Metal-Organic Framework-Assisted Construction of TiO 2 /Co 3 O 4 Highly Ordered Necklace-like Heterostructures for Enhanced Ethanol Vapor Sensing Performance ",

abstract = " In this work, we report a metal-organic framework (MOF)-assisted strategy to synthesize necklace-like TiO 2 /Co 3 O 4 nanofibers with highly ordered heterostructures via a facile approach including electrospinning and subsequent calcination. Polycrystalline TiO 2 nanofibers and Co 3 O 4 nanocages are consummately interconnected to form a highly ordered heterogeneous nanostructure, which can be of benefit for precisely accommodating the interface resistance of the p-n heterojunctions and the future realization of improved material performance. The ethanol-gas-sensing investigation showed that TiO 2 /Co 3 O 4 nanofiber sensors exhibited a strong ethanol response (R air /R gas -1 = 16.7 @ 150 ppm) and a low operating temperature of 150 °C. The sensing enhancement mechanism of the TiO 2 /Co 3 O 4 nanofibers is related to the formation of heterojunctions at interfaces and the high catalytic activity of MOF-derived Co 3 O 4 . Furthermore, this versatile method is a promising approach to constructing ordered heterostructures and extending the MOF-based heterogeneous materials toward wide applications.",

author = "Tian Zhang and Xing Tang and Jian Zhang and Tingting Zhou and Hao Wang and Congyi Wu and Xianping Xia and Changsheng Xie and Dawen Zeng",

year = "2018",

month = dec,

day = "4",

doi = "10.1021/acs.langmuir.8b02620",

language = "English",

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Zhang, T, Tang, X, Zhang, J, Zhou, T, Wang, H, Wu, C, Xia, X, Xie, C & Zeng, D 2018, ' Metal-Organic Framework-Assisted Construction of TiO ₂ /Co ₃ O ₄ Highly Ordered Necklace-like Heterostructures for Enhanced Ethanol Vapor Sensing Performance ', Langmuir, vol. 34, no. 48, pp. 14577-14585. https://doi.org/10.1021/acs.langmuir.8b02620

Metal-Organic Framework-Assisted Construction of TiO ₂ /Co ₃ O ₄ Highly Ordered Necklace-like Heterostructures for Enhanced Ethanol Vapor Sensing Performance . / Zhang, Tian; Tang, Xing; Zhang, Jian et al.
In: Langmuir, Vol. 34, No. 48, 04.12.2018, p. 14577-14585.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Metal-Organic Framework-Assisted Construction of TiO 2 /Co 3 O 4 Highly Ordered Necklace-like Heterostructures for Enhanced Ethanol Vapor Sensing Performance

AU - Zhang, Tian

AU - Tang, Xing

AU - Zhang, Jian

AU - Zhou, Tingting

AU - Wang, Hao

AU - Wu, Congyi

AU - Xia, Xianping

AU - Xie, Changsheng

AU - Zeng, Dawen

PY - 2018/12/4

Y1 - 2018/12/4

N2 - In this work, we report a metal-organic framework (MOF)-assisted strategy to synthesize necklace-like TiO 2 /Co 3 O 4 nanofibers with highly ordered heterostructures via a facile approach including electrospinning and subsequent calcination. Polycrystalline TiO 2 nanofibers and Co 3 O 4 nanocages are consummately interconnected to form a highly ordered heterogeneous nanostructure, which can be of benefit for precisely accommodating the interface resistance of the p-n heterojunctions and the future realization of improved material performance. The ethanol-gas-sensing investigation showed that TiO 2 /Co 3 O 4 nanofiber sensors exhibited a strong ethanol response (R air /R gas -1 = 16.7 @ 150 ppm) and a low operating temperature of 150 °C. The sensing enhancement mechanism of the TiO 2 /Co 3 O 4 nanofibers is related to the formation of heterojunctions at interfaces and the high catalytic activity of MOF-derived Co 3 O 4 . Furthermore, this versatile method is a promising approach to constructing ordered heterostructures and extending the MOF-based heterogeneous materials toward wide applications.

AB - In this work, we report a metal-organic framework (MOF)-assisted strategy to synthesize necklace-like TiO 2 /Co 3 O 4 nanofibers with highly ordered heterostructures via a facile approach including electrospinning and subsequent calcination. Polycrystalline TiO 2 nanofibers and Co 3 O 4 nanocages are consummately interconnected to form a highly ordered heterogeneous nanostructure, which can be of benefit for precisely accommodating the interface resistance of the p-n heterojunctions and the future realization of improved material performance. The ethanol-gas-sensing investigation showed that TiO 2 /Co 3 O 4 nanofiber sensors exhibited a strong ethanol response (R air /R gas -1 = 16.7 @ 150 ppm) and a low operating temperature of 150 °C. The sensing enhancement mechanism of the TiO 2 /Co 3 O 4 nanofibers is related to the formation of heterojunctions at interfaces and the high catalytic activity of MOF-derived Co 3 O 4 . Furthermore, this versatile method is a promising approach to constructing ordered heterostructures and extending the MOF-based heterogeneous materials toward wide applications.

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U2 - 10.1021/acs.langmuir.8b02620

DO - 10.1021/acs.langmuir.8b02620

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SN - 0743-7463

VL - 34

SP - 14577

EP - 14585

JO - Langmuir

JF - Langmuir

IS - 48

ER -

Zhang T, Tang X, Zhang J, Zhou T, Wang H, Wu C et al. Metal-Organic Framework-Assisted Construction of TiO ₂ /Co ₃ O ₄ Highly Ordered Necklace-like Heterostructures for Enhanced Ethanol Vapor Sensing Performance Langmuir. 2018 Dec 4;34(48):14577-14585. doi: 10.1021/acs.langmuir.8b02620

Metal-Organic Framework-Assisted Construction of TiO ₂ /Co ₃ O ₄ Highly Ordered Necklace-like Heterostructures for Enhanced Ethanol Vapor Sensing Performance

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