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^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

2 Citations (Scopus)

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. © 2025 Elsevier B.V.

Original language	English
Article number	182542
Journal	Journal of Alloys and Compounds
Volume	1037
Online published	24 Jul 2025
DOIs	https://doi.org/10.1016/j.jallcom.2025.182542
Publication status	Published - 10 Aug 2025

Funding

This work was jointly supported by the Natural Science Foundation of Shaanxi Province (2023-JC-QN-0476), Shaanxi University of Technology Research Grant (no. SLGRCQD2207), Scientific research project of Shaanxi Provincial Education Department (no.23JK0375), Science and technology program for overseas students of Shaanxi province (2023016) and City University of Hong Kong Donation Research Grants (DON-RMG nos. 9229021 and 9220061).

Research Keywords

Heterojunction
MoS2/Ti3C2Tx MXene
Nanocomposites
NH3 sensor

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10.1016/j.jallcom.2025.182542

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@article{52702cfd21bd4186b261ed4b6ea38b66,

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. {\textcopyright} 2025 Elsevier B.V.",

keywords = "Heterojunction, MoS2/Ti3C2Tx MXene, Nanocomposites, NH3 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.\}",

year = "2025",

month = aug,

day = "10",

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

language = "English",

volume = "1037",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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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. © 2025 Elsevier B.V.

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. © 2025 Elsevier B.V.

KW - Heterojunction

KW - MoS2/Ti3C2Tx MXene

KW - Nanocomposites

KW - NH3 sensor

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

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-105011599428&origin=recordpage

U2 - 10.1016/j.jallcom.2025.182542

DO - 10.1016/j.jallcom.2025.182542

M3 - RGC 21 - Publication in refereed journal

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

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DON_RMG: Fabrication, Characterization, and Properties of Functional Materials - RMGS

DON: Surface Modification and Fabrication of Advanced Materials

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Enhanced NH3 sensing performance of Ti3C2Tx MXene decorated with flowered MoS2

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DON_RMG: Fabrication, Characterization, and Properties of Functional Materials - RMGS

DON: Surface Modification and Fabrication of Advanced Materials

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Enhanced NH₃ sensing performance of Ti₃C₂T_x MXene decorated with flowered MoS₂