Enhanced NH3 sensing performance of Ti3C2Tx MXene decorated with flowered MoS2

Lizhai Zhang; Xinyu Lei; Henghui Sun; Dingyuan Wang; Baisong Chen; Fei Ma; Taotao Ai; Paul K. Chu

doi:10.1016/j.jallcom.2025.182542

Enhanced NH₃ sensing performance of Ti₃C₂T_x MXene decorated with flowered MoS₂

Lizhai Zhang
, Xinyu Lei
, Henghui Sun
, Dingyuan Wang
, Baisong Chen
, Fei Ma
, Taotao Ai
, Paul K. Chu

School of Materials Science and Engineering

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

Abstract

Because of abundant terminal groups, metal electrical conductivity and multilayer structure, the Ti₃C₂T_x have attracted extensive application for detection of harmful gas. However, the poor reversibility and response limit its application. Herein, the edge-enriched MoS₂ and Ti₃C₂T_x heterostructure was prepared hydrothermally and applied for NH₃ detection. The growth of flower-like MoS₂ on multilayer structure of Ti₃C₂T_x could increase number of edge sites for NH₃ adsorption. This synergistic effect has led into a 553 % and 3060 % improvement in sensing response compared to pure MoS₂ and Ti₃C₂T_x on exposure to 300 ppm of NH₃ at RT.The DFT calculations reveal that the heterojunction could improve the activity of charge transfer between the sensor and NH₃ molecular, enhancing the NH₃-sensing response. These findings offer the valuable insights for the room-temperature NH₃ detection.

Original language	English
Article number	182542
Journal	Journal of Alloys and Compounds
Volume	1037
DOIs	https://doi.org/10.1016/j.jallcom.2025.182542
State	Published - 10 Aug 2025

Keywords

Heterojunction
MoS/TiCT MXene
Nanocomposites
NH sensor

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10.1016/j.jallcom.2025.182542

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@article{71902de7508d4b26863f593b5fdc32d5,

title = "Enhanced NH3 sensing performance of Ti3C2Tx MXene decorated with flowered MoS2",

abstract = "Because of abundant terminal groups, metal electrical conductivity and multilayer structure, the Ti3C2Tx have attracted extensive application for detection of harmful gas. However, the poor reversibility and response limit its application. Herein, the edge-enriched MoS2 and Ti3C2Tx heterostructure was prepared hydrothermally and applied for NH3 detection. The growth of flower-like MoS2 on multilayer structure of Ti3C2Tx could increase number of edge sites for NH3 adsorption. This synergistic effect has led into a 553 \% and 3060 \% improvement in sensing response compared to pure MoS2 and Ti3C2Tx on exposure to 300 ppm of NH3 at RT.The DFT calculations reveal that the heterojunction could improve the activity of charge transfer between the sensor and NH3 molecular, enhancing the NH3-sensing response. These findings offer the valuable insights for the room-temperature NH3 detection.",

keywords = "Heterojunction, MoS/TiCT MXene, Nanocomposites, NH sensor",

author = "Lizhai Zhang and Xinyu Lei and Henghui Sun and Dingyuan Wang and Baisong Chen and Fei Ma and Taotao Ai and Chu, \{Paul K.\}",

note = "Publisher Copyright: {\textcopyright} 2025",

year = "2025",

month = aug,

day = "10",

doi = "10.1016/j.jallcom.2025.182542",

language = "英语",

volume = "1037",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Enhanced NH3 sensing performance of Ti3C2Tx MXene decorated with flowered MoS2

AU - Zhang, Lizhai

AU - Lei, Xinyu

AU - Sun, Henghui

AU - Wang, Dingyuan

AU - Chen, Baisong

AU - Ma, Fei

AU - Ai, Taotao

AU - Chu, Paul K.

PY - 2025/8/10

Y1 - 2025/8/10

N2 - Because of abundant terminal groups, metal electrical conductivity and multilayer structure, the Ti3C2Tx have attracted extensive application for detection of harmful gas. However, the poor reversibility and response limit its application. Herein, the edge-enriched MoS2 and Ti3C2Tx heterostructure was prepared hydrothermally and applied for NH3 detection. The growth of flower-like MoS2 on multilayer structure of Ti3C2Tx could increase number of edge sites for NH3 adsorption. This synergistic effect has led into a 553 % and 3060 % improvement in sensing response compared to pure MoS2 and Ti3C2Tx on exposure to 300 ppm of NH3 at RT.The DFT calculations reveal that the heterojunction could improve the activity of charge transfer between the sensor and NH3 molecular, enhancing the NH3-sensing response. These findings offer the valuable insights for the room-temperature NH3 detection.

AB - Because of abundant terminal groups, metal electrical conductivity and multilayer structure, the Ti3C2Tx have attracted extensive application for detection of harmful gas. However, the poor reversibility and response limit its application. Herein, the edge-enriched MoS2 and Ti3C2Tx heterostructure was prepared hydrothermally and applied for NH3 detection. The growth of flower-like MoS2 on multilayer structure of Ti3C2Tx could increase number of edge sites for NH3 adsorption. This synergistic effect has led into a 553 % and 3060 % improvement in sensing response compared to pure MoS2 and Ti3C2Tx on exposure to 300 ppm of NH3 at RT.The DFT calculations reveal that the heterojunction could improve the activity of charge transfer between the sensor and NH3 molecular, enhancing the NH3-sensing response. These findings offer the valuable insights for the room-temperature NH3 detection.

KW - Heterojunction

KW - MoS/TiCT MXene

KW - Nanocomposites

KW - NH sensor

UR - https://www.scopus.com/pages/publications/105011599428

U2 - 10.1016/j.jallcom.2025.182542

DO - 10.1016/j.jallcom.2025.182542

M3 - 文章

AN - SCOPUS:105011599428

SN - 0925-8388

VL - 1037

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 182542

ER -

Enhanced NH₃ sensing performance of Ti₃C₂T_x MXene decorated with flowered MoS₂

Abstract

Keywords

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