JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Xue Liu,Jianguo Deng,Fuhan Mai,Xin Li,Guohong Pu,Zhihua Deng,Lanxiang Ji,Xiaofeng Bai,Quanping Zhang,Yuanlin Zhou
The development of multifunctional radiation protection materials is crucial to ensure the safety of personnel and equipment in complex nuclear environments. Herein, a flexible radiation protection material integrating self-healing, thermal management, and behaviour response was prepared from Ta 4 C 3 T x MXene, Hydrogen-terminated phenyl polysiloxane, and Polyborosiloxane through esterification, “thiol-ene click” hydrosilylation reaction using L(+)-Cysteine as a bridge. The results showed that when Ta 4 C 3 T x MXene reached 20 wt%, the tensile strength of composite was 0.6321 MPa with the self-healing rate at 90.22 %. And the gauge factor of the material reached 25.83 at 100 % strain. This compensated for the gap between low strain and high sensitivity. Additionally, the multilayer structure of Ta 4 C 3 T x MXene and the absorption properties of Tantalum enable the material to attenuate γ-rays through absorption and scattering mechanisms. The attenuation capability of Ta 2 O 5 and Ta 4 C 3 T x MXene fillers for 59.6 KeV γ-rays was compared at the same Tantalum content. When the Tantalum content reaches 23.81 wt%, the Ta 4 C 3 T x MXene composite contains 20 wt% filler and has an attenuation coefficient of 0.757. Similarly, the Ta 2 O 5 composite contains 22.5 wt% filler and has an attenuation coefficient of 0.734. These results are significant for improving temperature and behaviour monitoring of workers in low-temperature nuclear environments.
研究领域:
材料科学
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核工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
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2024
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IF 5.3
Fan Wu,Long Yu,Liyi Zhou,Jiarong Zhang,Ya’nan Zhao,Chunna Yu,Chang Zhao,Guangjian Xing
Nanocomposite hydrogels with exceptional mechanical properties and sensing performance are ideal for flexible sensors designed to detect human movements and monitor human health. In this study, a composite hydrogel was prepared through in situ polymerization using a combination of poly(methacrylic acid-co-acrylamide) (P(MAA-co-AAM)), poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS), and Ta4C3TX MXene. The resulting P(MAA-co-AAM)/PEDOT/PSS/Ta4C3TX hydrogel features a porous network structure closely cross-linked with hydrogen bonds, providing superior mechanical properties such as high elastic modulus, compressive strength, and low hysteresis ratio. The compressive strength of the hydrogel reaches 386.80 kPa, significantly surpassing that of pure P(MAA-co-AAM) hydrogels and other hydrogels. The piezoresistive sensor developed with this hydrogel demonstrates outstanding pressure sensing capabilities: a sensitivity of 0.44 kPa–1, a low detection limit of 38.63 Pa, a rapid response time of 44 ms, and a recovery time of 58 ms. Notably, the sensor can sustain over 1000 sensing cycles with remarkable stability and weather resistance. It can accurately detect human body movements, such as joint movements, and even recognize subtle facial microexpressions. Furthermore, the sensor can wirelessly monitor robotic movements through a Bluetooth system and accompanying software. This mechanically robust hydrogel holds significant promise for applications in pressure sensors, human-machine interaction, and portable wearable devices.
研究领域:
材料科学
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纳米技术
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生物医学工程
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可穿戴技术
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传感器
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
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2024
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IF 2.7
Deyu Kong,Peng Huang,Fangrong Qin,Jun Liu,Jiayi Lin,Yubin Lin,Haiming Huang,Weiliang Wang,Chuang Han,Shaolin Zhang
Two-dimensional (2D) MXenes have emerged as promising gas sensor materials due to their abundant surface functional groups, excellent conductivity, and large surface area. In this work, we synthesized 2D Ta 4 C 3 T x nanosheets via hydrofluoric acid (HF) etching followed by a tetramethylammonium hydroxide (TMAOH) intercalation treatment. Systematical characterization reveals the as-prepared 2D Ta 4 C 3 T x exhibits promising monolayer morphology with abundant oxygen containing functional groups. The sensor device based on monolayer Ta 4 C 3 T x presents a brilliant response to ammonia gas at room temperature, well surpassing those based on other previously reported MXenes. The high selectivity of Ta 4 C 3 T x for ammonia gas was explored through first-principle calculations. This study highlights the significant potential of monolayer Ta 4 C 3 T x for developing high-performance room-temperature ammonia gas sensors.
研究领域:
材料科学
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纳米技术
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气体传感
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二维材料
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电子器件
✓ 已验证
DOI
高影响因子
ACS Applied Electronic Materials
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2025
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IF 4.7
Tianran Zhao,Fan Wu,Yi’na Yang,Liyang Zhao,Long Yu,Jiarong Zhang,Ya’nan Zhao,Chunna Yu,Chang Zhao,Guangjian Xing
The subpar mechanical and electrical properties of traditional conductive hydrogels limit their applicability in flexible pressure sensors for the stable and real-time monitoring of human activities. In this study, we synthesized a double-network poly(vinyl alcohol)/polyacrylamide/Ta4C3TX hydrogel using a one-pot polymerization method in the presence of CaCl2. This hydrogel benefits from the coexistence of metal coordination bonds, hydrogen bonds, and ionic interactions, contributing to its desirable mechanical properties and good compressibility. Furthermore, the incorporation of Ta4C3TX MXene significantly enhances the conductivity of the hydrogel compared to the pristine poly(vinyl alcohol)/polyacrylamide variant. The piezoresistive sensors constructed from this hydrogel demonstrate a high sensitivity of 2.67 kPa–1, a low detection limit of 38 Pa, a rapid response time of 69.1 ms, and a short-term recovery time of 39.75 ms, all while maintaining good stability. Notably, the sensors retain excellent sensing performance even after 90 days. Given these outstanding characteristics, the sensors hold promise for monitoring physiological signals, such as those from human limbs and speech, and can be utilized in the fields of detecting robotic movement and wireless wearable sensing. Additionally, the hydrogel demonstrates exceptional thermal shielding properties. This high-performance hydrogel developed in this study paves the way for advanced flexible wearable electronic devices.
研究领域:
材料科学
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传感器技术
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柔性电子学
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生物医学工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）