COMPOSITES PART B-ENGINEERING
·
2023
·
IF 13.1
Can He,Meng Cai,Yu Huang,Xiaoqiang Fan,Minhao Zhu
Despite Ti 3 C 2 T x MXene has certified tremendous promise for improving the anti-corrosion/wear of epoxy resin, it falls short of matching the protective standards under long-term extreme conditions. Herein, 2-methylimidazole zinc salt ZIF-8 was grown in-situ on amino-functionalized Ti 3 C 2 T x nanosheets and doped with cerium cations (P + -Ti 3 C 2 T x @ZCe). The Ti 3 C 2 T x -based composite was then parallel arranged within epoxy coating utilizing electrophoretic deposition technique to prepare a novel self-healing intelligent coating (PMX@ZCe). The encapsulation structure of P + -Ti 3 C 2 T x @ZCe was investigated by XRD , FTIR, XPS, FE-SEM, TEM, Zeta potential and TG techniques. Furthermore, the corrosion/wear resistance and self-healing performances of PMX@ZCe were discussed detailedly and the strengthening mechanism of P + -Ti 3 C 2 T x @ZCe was revealed. Results indicate that PMX@ZCe maintains the highest |Z| 0.01Hz value of 1.24 × 10 10 Ω cm 2 after 4 weeks of electrochemical test and exhibits excellent self-healing efficiency of 153 % under artificial scratch, which is ascribed to the release of Ce 3+ /Ce 4+ that could form insoluble protective films at the coating/metal interface. The wear rate of PMX@ZCe is 2.29 × 10 −5 mm 3 /N · m about 56 % lower than that of EP. PMX@ZCe possesses satisfactory corrosion/wear protection performance, thanks to the synergy of good interfacial interaction , parallel-aligned barrier effect and active-passive protection. This work provides a new design thinking for MXene-based intelligent protective coatings that can meet the demands of multi-service environments.
研究领域:
材料科学
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表面工程
·
腐蚀科学
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Yanjie Hou,Jialing Liu,Guannan Zhang,Zhenyu Xiang,Xinpeng Wu,Jianbo Song,Sijin Li
Reactive oxygen species (ROS) play a crucial role in both physiological and pathological processes within the cardiovascular system. However, an excess of ROS can result in oxidative stress, which may lead to cellular damage, dysfunction, and the promotion of various cardiovascular diseases. How to remove the excess ROS is especially important. Cerium oxide (CeO 2 ), a well-known antioxidant, has the ability to scavenge ROS. However, it is important to improve the antioxidant activity of CeO 2 while avoiding cytotoxicity. In this paper, different nanocomposites have been obtained by compositing different masses of transition metal carbide/carbon-nitride (Ti 3 C 2 T x ) with CeO 2 . In the POD activity assay, COMX-50 shows the best ability to decompose hydrogen peroxide. In subsequent free radical scavenging experiments, COMX-50 scavenges free radicals better than CeO 2 and Ti 3 C 2 T x , which may be attributed to the excellent electron transport ability of Ti 3 C 2 T x to facilitate free radical scavenging. Meanwhile, the POD activity and ROS scavenging ability of COMX-50 exhibit concentration and time dependence. More importantly, COMX-50 can promote the spreading and proliferation of endothelial cells. This provides a new strategy to combat cardiovascular diseases caused by oxidative stress.
研究领域:
生物医学工程
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心血管医学
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材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2024
·
IF 3.7
Xu Zhang,Yanan Li,Yuting Yuan,Cuiming Wu,Xiaolin Wang,Yahua Liu,Xiaozhao Han
The main key component in bipolar membranes (BPMs) is the interfacial layer (IL), which is responsible for the water splitting. In this work, a most studied MXene Ti 3 C 2 T x and a modified Ti 3 C 2 T x (PANI-Ti 3 C 2 T x ) were investigated as the catalysts in ILs of BPMs. BPMs with Ti 3 C 2 T x /PANI-Ti 3 C 2 T x were prepared through the layer-by-layer casting/spraying method. The resulting BPMs were assessed through morphologies, thermal stability, alkali resistance performance, current-voltage (I-V) curves and water splitting performance in the bipolar membrane electrodialysis (BMED). Results show that the as-prepared BPMs exhibited excellent adhesion between layers, good thermal stability and alkali resistance performance. I-V curves showed that the voltage of the BPM with the PANI-Ti 3 C 2 T x addition content of 0.5% (BPM-PANI-Ti 3 C 2 T x -0.5%, ~7.0 V) at the current density of 80 mA·cm -2 was only half of that of the blank sample BPM-0 without any catalysts (~14.1 V). After the BMED operation, the final OH - concentration increment in the base chamber (∆ C OH ) and the energy consumption of the BPM-Ti 3 C 2 T x -1.0% membrane (0.089 mol·L -1 , 0.58 kWh·mol -1 ) were ~7% higher and ~29% lower than those of BPM-0 (0.083 mol·L -1 , 0.82 kWh·mol -1 ), respectively; BPM-Ti 3 C 2 T x -1.0% (0.089 mol·L -1 , 95%) showed a higher final ∆ C OH and current efficiency than the commercial membrane BP-1 (0.087 mol·L -1 , 93%), but a higher energy consumption (0.58 kWh·mol -1 ) than BP-1 (0.33 kWh·mol -1 ). This study suggests that MXenes have the advanced catalytic effect on water splitting occurs in ILs of BPMs.
研究领域:
材料科学
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电化学
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能源技术
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产品关联
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 51
·33056-33063
·
IF 4.036
Bo Huang,Zhihua Zhao,Pu Chen,Baocang Zhou,Zhuo Chen,Yu Fu,Hongyu Zhu,Chen Chen,Shuaiwen Zhang,Anbiao Wang,Pu Shi,Xiaoqing Shen
Ammonia (NH3) is a common air pollutant and is a biomarker for kidney disease. Therefore, the preparation of ammonia gas sensors with high sensitivity, good selectivity and low operating temperature is of great importance for health protection. Using the in situ electrostatic self-assembly approach, a chemoresistive gas sensor based on Co(OH)2/Ti3C2Tx hybrid material was created in this study. The prepared samples were characterized by XRD, XPS, TEM, BET and other testing methods for structure, surface topography and elements. These samples were fabricated into sensors, and the gas sensing properties of the materials were investigated under different test conditions. The results show that the gas response value of the C/M-2 sensor is up to about 14.7%/100 ppm, which is three times the response value of the sensor made of pure MXene to NH3. In addition, the Co(OH)2/Ti3C2Tx hybrid sensors exhibit excellent repeatability, high sensitivity under low concentration (less than 5 ppm), fast response/recovery time (29 s/49 s) and long-time stability, which indicates their promising utility in the IoT field.
研究领域:
材料科学
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传感技术
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健康监测
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产品关联
DOI
PubMed
高影响因子
Arabian Journal of Chemistry
·
2024
·
IF 5.3
Jiyun Gao,Youyou Yin,Yongjing Guo,Lijuan Jia,Futing Xia,Chenhui Liu,Ming Hou,Fang Wang
NO 2 is a toxic gas that poses a significant threat to the environment and human health. In this work, one-dimensional ZnO nanowires and two-dimensional layered titanium carbide (Ti 3 C 2 T x ) have been prepared by hydrothermal and selective chemical etching methods, respectively. The Ti 3 C 2 T x /ZnO composites are synthesized by electrostatic self-assembly method. The characterization results indicate that the ZnO nanowires are uniformly dispersed on the surface of layered Ti 3 C 2 T x to form a heterostructure. Meanwhile, the gas sensitive performance of Ti 3 C 2 T x /ZnO composite material is investigated and compared with that of pure Ti 3 C 2 T x . The results reveal that the composite exhibits a high selectivity as well as sensitivity with a response value (S = Rg/Ra) of 18.66 to 100 ppm NO 2 at 250 ℃, which is 4.3 times higher than that of pure Ti 3 C 2 T x . This proves that the prepared composite material is an effective sensing material for detecting NO 2 gas.
研究领域:
材料科学
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环境科学
·
化学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Xiuwen Wu,Jin Chen,Xiaofeng Yang,Huiqi Zheng,Yuzhao Ma,Yanjun Li
Peroxymonosulfate (PMS) is a promising technology for increasing the oxidation capacity and promoting the production of active species in the photocatalytic system. SrTiO 3 , a material with a perovskite crystal structure in a cubic form, can activate PMS on its surface and generate non-radical 1 O 2 . Herein, SrTiO 3 /Ti 3 C 2 T x (ST) composites were successfully synthesized using a hydrothermal method based on SrTiO 3 materials. The photocatalytic activation of PMS resulted in the degradation of tetracycline hydrochloride (TC-HCl), with the ST-10 (10 wt% SrTiO 3 /Ti 3 C 2 T x ) composite showing the highest efficiency in TC removal and rapid degradation kinetics, achieving complete TC removal within 10 min. The synergistic interaction between the two components in ST-10 significantly enhanced the activation of peroxymonosulfate (PMS), leading to an increased production of free radicals. The larger specific surface area and presence of –OH groups in the composite material facilitated the adsorption and chemical bonding of PMS molecules, thereby improving their overall performance. Quench experiments and electron paramagnetic resonance analysis identified •SO 4 − , •OH, •O 2 – and 1 O 2 as the primary active species responsible for the degradation of TC. Additionally, the degradation pathway of TC was elucidated through mass spectrometry analysis. This study provides valuable insights for the development of effective photocatalysts as promising PMS catalysts in environmental applications.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Yong-Sheng Fang,Peng He,Yong-Zhu Cai,Wen-Qiang Cao,Mao-Sheng Cao
Ti 3 C 2 T x exhibits excellent electromagnetic (EM) shielding and electrochemical properties . However, the inherent re-stacking tendency and easy oxidation of Ti 3 C 2 T x limit its further application. In this study, a multi-walled carbon nanotube/polyaniline composite (CNT/PANI, denoted as C –P) was introduced into Ti 3 C 2 T x nanosheets to obtain a Ti 3 C 2 T x –CNT/PANI composite (T@CP). Owing to the integrated effects of Ti 3 C 2 T x and C –P, the contribution of absorption was significantly improved, which finally enhanced the EM shielding performance of T@CP. The highest total EM shielding effectiveness ( SE T ) was close to 50 dB (49.8 dB), which was substantially higher than that of pure Ti 3 C 2 T x (45.3 dB). Moreover, T@CP demonstrated outstanding supercapacitive performance. The specific capacitance of T@CP (2134.5 mF/cm 2 at 2 mV/s) was considerably higher than that of pure Ti 3 C 2 T x (414.3 mF/cm 2 at 2 mV/s). These findings provide a new route for the development of high-efficiency Ti 3 C 2 T x -based bifunctional EM shielding and electrochemical materials.
研究领域:
材料科学
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电磁学
·
电化学
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2022
·
IF 4.598
Zhiwei Cai,Bo Tu,Rui Zhou,Dacheng Xia,Hanping He,Nan Gao,Gang Chang,Yunbin He
Two-dimensional (2D) transition metal carbide Ti 3 C 2 T x is the most widely studied MXene and has shown excellent metal conductivity, high carrier mobility and rich surface functions due to its unique structure and characteristics, which can act as an ideal potential material for electronic devices. Herein, an electrochemical transistor sensor based on ultrathin Ti 3 C 2 T x MXene as a sensing channel was fabricated, which combined with Au nanoparticles (AuNPs)/Ti 3 C 2 T x nanocomposites functionalized gate electrode to realize the electrocatalytic oxidation of nitrite. Utilizing the high electron mobility of the Ti 3 C 2 T x channel and the outstanding electrocatalytic activity of the gate material, the transistor sensor achieved ultrasensitive detection of nitrite, including the urtralow detection limit down to 0.01 nM, which is lower than those of other available methods and wide linear range (0.01 nM-0.5 μM and 0.5 μM-5 mM). In addition, the Ti 3 C 2 T x -based device exhibited good selectivity, long-term stability and practicability, realizing the accurate detection of nitrite in natural lake water, which provided a new way for the highly sensitive monitoring of nitrite in environmental and food safety.
研究领域:
材料科学
·
环境科学
·
分析化学
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产品关联
DOI
高影响因子
Applied Physics Reviews
·
2023
·Vol. 10
·期 2
·
IF 15
Hu Chuqiao,Du Zhijian,Wei Zhongming,Li La,Shen Guozhen
Ti3C2Tx MXene as a representative material in the emerging two-dimensional (2D) MXene family with high conductivity, abundant functional surface terminals, and large layer spacing is supposed to show specific semiconducting properties like other 2D graphene or transition metal dichalcogenides, thus extending Moore's law beyond silicon. However, despite extensive efforts, the design of Ti3C2Tx MXene based semiconductor materials often depends on the availability of traditional semiconductors to form heterojunctions, where Ti3C2Tx MXene is still in metallic characters and is not in dominant status in the heterojunctions. Here, we demonstrate semiconducting Ti3C2Tx MXene modified with dodecyl (−C12H26) groups, as functionalized Ti3C2Tx MXene possesses opened and typical layer-dependent bandgap. The new arising characteristics, red-shift of characteristic peaks, and intensity ratio of the A1g(C)/A1g(Ti, C, Tx) in Raman spectroscopy suggested the successful grafting of the −C12H26 groups on the Ti3C2Tx MXenes. In addition, the theoretical calculations by density functional theory, photoluminescence spectrum, together with photoelectric measurements of Ti3C2Tx-C12H26 MXene on different layers, show a tunable bandgap of 0.49–2.15 eV and superior photoresponse properties in fabricating near infrared photodetectors.
研究领域:
材料科学
·
半导体物理
·
光电子学
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产品关联
DOI
高影响因子
JOM
·
2021
·Vol. 73
·期 12
·4103-4111
·
IF 2.474
Wang Ying,Hou Jiyue,Li Xue,Hu Xiuqiong,Wang Yanjie,Yang Zhengwu,Ai Rui,Zhang Yiyong
This paper proposes the preparation of a S-Se-Ti 3 C 2 T x /TiO 2 cathode by etching Ti 3 AlC 2 with hydrofluoric acid and doping with selenium (Se). Through an electrochemical performance test, selenium is doped into the active material sulfur and forms a sulfur-selenium compound to compensate for the ‘chemical inertness’ of the elemental sulfur, thereby increasing the utilization rate of the active material. Taking advantage of the ability of TiO 2 to absorb polysulfide compounds and the high conductivity of carbides, the Ti 3 C 2 T x composite material, modified with TiO 2 nanodots, is constructed in situ as a sulfur-selenium composite material carrier, achieving a high sulfur content of 80%. S-Se-Ti 3 C 2 Tx/TiO 2 is used as the cathode, and the initial discharge specific capacity is as high as 1073 mAh g −1 , which improves the utilization of active materials and effectively inhibits the shuttle effect of lithium polysulfide intermediates.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 11
·1-13
·
IF 5.3
Zhao Zhihua,Su Zijie,Lv Zhenli,Shi Pu,Jin Guixin,Wu Lan
Bi 2 S 3 /Ti 3 C 2 T x nanomaterials were successfully prepared through a simple hydrothermal method. Various methods were used for their characterization, including XRD, XPS, SEM, EDS, and BET, along with testing their gas-sensing properties. The results showed that the response value to 100 ppm ammonia at room temperature reached 107%, which was 14.1 times higher than that of pure few-layer MXene. After undergoing anti-humidity interference testing, we observed that Bi 2 S 3 /Ti 3 C 2 T x exhibited a higher response value in real-time monitoring of ammonia as humidity increased. Specifically, under 90% humidity conditions, its response value reached 1.32 times that of normal humidity conditions. This exceptional moisture resistance ensures that the sensor can maintain stability, and even exhibit superior performance, in harsh environments. Therefore, it possesses excellent selectivity, high-moisture-resistance, and long-term stability, making it significant in the field of medical and health monitoring. Graphical abstract
研究领域:
材料科学
·
医学监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Xiaoli Xu,Hongtao Jiang,Wangwang Liu,Shengyi Wang,Xiaoping Wang,Mengyu Wang,Wei Ma,Guorong Sun,Jiming Liu
Two-dimensional transition metal carbides/nitrides (MXenes) show great potential in volatile organic compound (VOC) sensors owing to their exceptional electrical properties, numerous active sites, and abundant terminal functional groups. However, pure MXene Ti3C2Tx is prone to oxidative degradation under ambient environment, and the insufficient response and poor stability are still grand challenges. Hereby, by deliberately introducing metal oxide semiconductor in multilayer Ti3C2Tx, a promising Ti3C2Tx/SnO2 sensor with excellent long-term stability and outstanding selectivity is developed for VOC monitoring. The research shows that the Ti3C2Tx/SnO2 hybrid sensor implements efficient detection of hydrogen-bonded gases and is especially highly efficient with ethanolamine (EA). The sensitivity of the hybrid sensor to EA is improved by over 10-fold in comparison with pristine Ti3C2Tx, besides the good selectivity to over 12 different VOCs. The synergistic effects of n-n nanoheterojunctions, the large specific surface area of 45.186 m2/g and mesoporous-rich hierarchical structure, and the functional terminal groups together facilitate the EA-sensitive properties. In addition, the innovative preparation of the Ti3C2Tx/SnO2 sensor, which takes advantage of terpinol, contributes to the close contact of Ti3C2Tx/SnO2 on the ceramic tubes, thus improving the sensor sensitivity. The scientific findings of this work may provide valuable ideas for the exploration of innovatively composite gas sensors.
研究领域:
材料科学
·
化学传感器
·
纳米技术
·
环境监测
✓ 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）