1
|
Cui X, Wang H, Wang X, Tang Y, Zhang Y, Dong Y, Jing L, Shen L. Room Temperature and Humidity Resistant NH 3 Detection Based on a Composite of Hydrophobic CNTs with Sulfur Nanosheets. ACS Sens 2025; 10:1756-1764. [PMID: 40017389 DOI: 10.1021/acssensors.4c02076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2025]
Abstract
A composite of sulfur nanosheets (S-NSs) with hydrophobic carbon nanotubes (H-CNTs) was designed, and a chemiresistive gas sensor based on this composite material was constructed for breath analysis of NH3 detection at room temperature. Taking advantage of the capillary condensation of CNTs, the hydrophobic effect of hexadecyltrimethoxysilane (HDTMS), and the high sensitivity of S-NSs to NH3 detection, the constructed sensor showed an improved humidity-resistant capacity and is capable of detecting breath-relevant NH3 concentrations down to ppb level under high humidity. The fabricated gas sensor exhibited fast response/recovery (18/26 s) and good stability. Online monitoring for exhaled breath analysis shows good recovery with a stable baseline, providing a potential practical application. The research also facilitates the development of commercial low-cost breath analysis sensors.
Collapse
Affiliation(s)
- Xiaoni Cui
- College of Chemistry and Chemical Engineering, Key Laboratory of Pollutant Chemistry and Environmental Treatment, Yili Normal University, Yining 835000, China
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Huaipeng Wang
- School of Integrated Circuits, Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Xinglei Wang
- College of Chemistry and Chemical Engineering, Key Laboratory of Pollutant Chemistry and Environmental Treatment, Yili Normal University, Yining 835000, China
| | - Yuchen Tang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Yaozhou Zhang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Yu Dong
- Department of Respiratory and Critical Care Medicine, Xi'an Central Hospital, Xi'an 710003, China
| | - Liuwei Jing
- Shaanxi Yanchang Petroleum Yanan Energy & Chemical Co., Ltd, Fuxian, Shaanxi 727500, China
| | - Lihua Shen
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| |
Collapse
|
2
|
Jalil MA, Hassan K, Tran ATT, Tung TT, Panda MR, El Meragawi S, Kida T, Majumder M, Losic D. Harnessing mixed-phase MoS 2 for efficient room-temperature ammonia sensing. NANOSCALE 2025; 17:3341-3352. [PMID: 39692145 DOI: 10.1039/d4nr03037k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2024]
Abstract
Molybdenum disulfide (MoS2), a notable two-dimensional (2D) material, has attracted considerable interest for its potential applications in gas sensing, despite its typically insulating characteristics, which have limited its practical use. In this study, we present the use of mixed phase MoS2 (1T@2H-MoS2) to overcome sensing limitations of MoS2 material by enhancing its conductivity and demonstrating its high-performance characteristics for sensing ammonia (NH3) at room temperature (20 °C). The 1T@2H-MoS2 was synthesized via a hydrothermal process, and the coexistence of two different phases (the 1T and 2H phases) was confirmed by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Raman spectroscopy. The flower-like morphology was confirmed by field emission scanning electron microscopy (FESEM) and TEM. Our results indicate that the presence of both 1T and 2H phases within the material introduces sulfur vacancies, which we propose are critical to significantly enhancing its sensitivity to NH3 gas. The ammonia-sensing performance of the 1T@2H-MoS2 material was evaluated, and it demonstrated rapid and selective detection of NH3 gas across a wide concentration range (2 ppm to 100 ppm), with a very swift response time (7 s), fast recovery and high selectivity at room temperature without requiring heating. This improvement is attributed to the increased conductivity and effective active sites provided by the sulfur defects. This study underscores the potential of mixed-phase MoS2 in developing rapidly responsive and highly selective NH3 sensors, paving the way for the safety monitoring of hazardous gases in various industrial settings.
Collapse
Affiliation(s)
- M A Jalil
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia, SA 5000, Australia.
| | - Kamrul Hassan
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia, SA 5000, Australia.
| | - Anh Tuan Trong Tran
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia, SA 5000, Australia.
| | - Tran Thanh Tung
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia, SA 5000, Australia.
| | - Manas Ranjan Panda
- ARC Research Hub for Advanced Manufacturing with 2D materials (AM2D), Monash University, Clayton, VIC 3800, Australia
- Nanoscale Science and Engineering Laboratory (NSEL), Department of Mechanical and Aerospace Engineering Monash University, Clayton, VIC 3800, Australia
| | - Sally El Meragawi
- ARC Research Hub for Advanced Manufacturing with 2D materials (AM2D), Monash University, Clayton, VIC 3800, Australia
- Nanoscale Science and Engineering Laboratory (NSEL), Department of Mechanical and Aerospace Engineering Monash University, Clayton, VIC 3800, Australia
| | - Tetsuya Kida
- Division of Materials Science, Department of Applied Chemistry & Biochemistry, Kumamoto University, Kumamoto, 860-8555, Japan
| | - Mainak Majumder
- ARC Research Hub for Advanced Manufacturing with 2D materials (AM2D), Monash University, Clayton, VIC 3800, Australia
- Nanoscale Science and Engineering Laboratory (NSEL), Department of Mechanical and Aerospace Engineering Monash University, Clayton, VIC 3800, Australia
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia, SA 5000, Australia.
- ARC Research Hub for Advanced Manufacturing with 2D materials (AM2D), Monash University, Clayton, VIC 3800, Australia
| |
Collapse
|
3
|
Dai Y, He Q, Huang Y, Duan X, Lin Z. Solution-Processable and Printable Two-Dimensional Transition Metal Dichalcogenide Inks. Chem Rev 2024; 124:5795-5845. [PMID: 38639932 DOI: 10.1021/acs.chemrev.3c00791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Two-dimensional (2D) transition metal dichalcogenides (TMDs) with layered crystal structures have been attracting enormous research interest for their atomic thickness, mechanical flexibility, and excellent electronic/optoelectronic properties for applications in diverse technological areas. Solution-processable 2D TMD inks are promising for large-scale production of functional thin films at an affordable cost, using high-throughput solution-based processing techniques such as printing and roll-to-roll fabrications. This paper provides a comprehensive review of the chemical synthesis of solution-processable and printable 2D TMD ink materials and the subsequent assembly into thin films for diverse applications. We start with the chemical principles and protocols of various synthesis methods for 2D TMD nanosheet crystals in the solution phase. The solution-based techniques for depositing ink materials into solid-state thin films are discussed. Then, we review the applications of these solution-processable thin films in diverse technological areas including electronics, optoelectronics, and others. To conclude, a summary of the key scientific/technical challenges and future research opportunities of solution-processable TMD inks is provided.
Collapse
Affiliation(s)
- Yongping Dai
- Department of Chemistry, Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Tsinghua University, Beijing 100084, China
| | - Qiyuan He
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 99907, China
| | - Yu Huang
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Xiangfeng Duan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Zhaoyang Lin
- Department of Chemistry, Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education), Tsinghua University, Beijing 100084, China
| |
Collapse
|