JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2022
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IF 10.319
Kunpeng Qian,Shuang Li,Jianhui Fang,Yuhuan Yang,Shaomei Cao,Miao Miao,Xin Feng
Ti 3 C 2 T x MXenes with excellent metallic conductivity and flexibility have shown a promising prospect as electromagnetic interference (EMI) shielding materials. Ultrathin, hierarchical hybrid films were fabricated by using C 60 intercalating Ti 3 C 2 T x MXenes with the assistance of water-soluble γ -cyclodextrin (CD). The C 60 /CD complex was obtained by high-speed vibration milling using hydrophilic CD as dispersing agent. After thermal annealing treatment, the obtained hybrid film exhibited excellent EMI shielding (53.52±0.43 dB), hydrophobicity (water contact angle: 93.7°) and mechanical stability (over 0.9 million bending times). Taking advantage of the antioxidant of C 60 , the chemical durability of Ti 3 C 2 T x MXenes based hybrid films was also improved as expected. These results indicate that the well-designed hierarchical hybrid films with the intercalation of C 60 have promising potential for high-performance EMI shielding applications.
研究领域:
材料科学
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纳米技术
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Zhihui Hu,Huanmin Liu,Ningxin Kang,Kangle Lv,Qin Li
Using solvothermal methods to in situ oxidize two-dimensional titanium carbide (Ti 3 C 2 T x ) MXene into TiO 2 nanocrystals offered an effective strategy to construct highly efficient TiO 2 /Ti 3 C 2 T x heterojunctions for photocatalytic applications. Nevertheless, the effect of the chosen solvent on the Ti 3 C 2 T x oxidation and the product's performance was often neglected. Herein, isopropanol (ISO), ethanol (EtOH), ethylene glycol (EG), dimethyl sulphoxide (DMSO) and deionized water (Water) were taken as the representative solvents to prepare TiO 2 /Ti 3 C 2 T x composites by one-step solvothermal method for photocatalytic NO emission. It was the large polarity, dielectric constant and surface tension of the solvents that offered Ti 3 C 2 T x with good dispersibility and high oxidation degree during the solvothermal process. More importantly, the solvothermal treatment of Ti 3 C 2 T x in DMSO could promote the formation of TiO 2 nanoparticles with obviously higher crystallinity and more surface oxygen vacancies than those in EG, EtOH and ISO. Therefore, the photocatalytic NO oxidation efficiency of the samples within 30-min irradiation showed a descending order of TT-DMSO (46.9%), TT-Water (42.2%), TT-EG (32.3%), TT-EtOH (26.7%), and TT-ISO (19.9%). This work highlighted the significance of oxidation environment for Ti 3 C 2 T x , which could bring about some new but necessary consideration on the processing technique of MXene families for their future practical applications.
研究领域:
材料科学
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环境科学
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Ziyi Li,Jia Xiong,Hang Song,Shuchang Liu,Yufei Huang,Yangqiang Huang,Geoffrey I. N. Waterhouse,Ziyun Wang,Yu Mao,Zhiwu Liang,Xiao Luo
To enhance the photocatalytic efficiency of ZIF-67 (Zeolitic Imidazolate Framework-67), we integrated it with Ti 3 C 2 T x MXene through in-situ synthesis and assessed the effects of different MXene concentrations on photocatalytic activity. We identified ZIF-67/Ti 3 C 2 T x MXene as the optimal catalyst (denoted as ZT-450), yielding CO, CH 4 , and H 2 at 62.7, 6.7, and 7.3 μmol g −1 , respectively. The CO productive rate achieved by ZT-450 exhibits a substantial enhancement, outperforming both ZIF-67 and Ti 3 C 2 T x by factors of 16.1 and 4.8, respectively. After introducing Ti 3 C 2 T x in ZIF-67, CO 2 adsorption ability achieves 127.90 μmol g −1 , much higher than those of pure ZIF-67 and Ti 3 C 2 T x . Combining Density Functional Theory (DFT) calculations, we established that introducing Ti 3 C 2 T x in ZIF-67 facilitates rapid electron transfer and improves light absorption, CO 2 activation. In-situ DRIFTS measurements of photocatalytic CO 2 reduction reaction (CO 2 RR) on ZIF-67/Ti 3 C 2 T x MXene composite were employed to reveal the emergence of intermediates such as *COOH, *CHO, *OCH 3 , etc ., and elucidate the mechanism accordingly. This research contributes to the advancement of photocatalytic CO 2 RR, offering insights into applying Ti 3 C 2 Tx MXene in photocatalysis.
研究领域:
材料科学
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环境科学
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化学
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DOI
高影响因子
CATALYSIS LETTERS
·
2025
·Vol. 155
·期 2
·1-17
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IF 2.4
Gan Wei,Guo Yan,Zhu Dan,Ling Min,Jiang Can,Zhang Shengfu
With the increasing problems caused by water pollution, the use of photocatalytic oxidation to remove pollutants from wastewater is a sustainable strategy. However, it is challenging to develop well-designed photocatalysts with high photo-quantum efficiency and the comprehension of their photocatalytic reaction mechanisms. Herein, a R/A-TiO 2 /Ti 3 C 2 T x (R: rutile; A: anatase) photocatalyst with different ratios of rutile and anatase phases was prepared by a facile hydrothermal method. The results showed that the number of rutile and anatase phases could be readily regulated by adjusting the dosage of titanium isopropoxide (TTIP) and Ti 3 C 2 T x . The prepared R/A-TiO 2 /Ti 3 C 2 T x -0.2 contained a mass fraction of 42% rutile phase and 58% anatase phase, with the interface between the two phases exhibited a tightly bonded structure. Meanwhile, the heterojunction between the heterophase TiO 2 and Ti 3 C 2 T x interfaces improved the photo-quantum efficiency of R/A-TiO 2 /Ti 3 C 2 T x , and the degradation efficiency of Rhodamine B (RhB) by R/A-TiO 2 /Ti 3 C 2 T x -0.2 was 77.82% in 2 h under ultraviolet light illumination. Ultimately, the active species capture experiments verified that the primary active species in the photocatalytic reaction was h + , ·OH, and·O 2 − . This work could shed light on the new approach to the rational design of high-efficiency heterophase TiO 2 -based photocatalysts. Graphical R/A-TiO 2 /Ti 3 C 2 T x photocatalysts with heterojunctions were controllably synthesized by an EDTA-2Na-assisted hydrothermal method.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
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2020
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IF 2.904
Jialong An,Yanan Ma,Mingquan He,Jinfeng Yan,Chuankun Zhang,Xingxing Li,Peizhi Shen,Shijun Luo,Yihua Gao
Development of low-cost, efficient, flexible and highly sensitive pressure sensors that can perceive and respond to environmental stimuli have become indispensable for wearable electronics. Herein, the Ti 3 C 2 T x -textile based pressure sensor was successfully fabricated with the help of common fabric substrates by using simple and effective dipping-drying method. The Ti 3 C 2 T x Nanosheets prepared by wet-chemical solution display excellent hydrophilicity, high specific surface area, metallic conductivity and controllable surface groups properties, which are extremely suitable in construction of low-cost and high-performance textile-based pressure sensors. And the Ti 3 C 2 T x -textile based pressure sensor achieves high sensitivity (19.78 kPa −1 ), low detection limit (219 mN), fast response (∼149 ms) and well stability (more than 7000). With these merits, the Ti 3 C 2 T x -textile based sensor is demonstrated to be able to recognize the human physiological signals, such as finger bending, tapping, hand movements and so on. Furthermore, the textile sensor also can be capable to measure pressure distribution and distinguish the subtle strain, which demonstrates great potential in both industrial and biomedical applications.
研究领域:
材料科学
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生物医学工程
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传感技术
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DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 17
·2967
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IF 5.719
Xiaohan Wang,Fan Zhang,Feiyue Hu,Yaya Li,Yongqiang Chen,Hailong Wang,Zhiyu Min,Rui Zhang
To solve the pollution problem of electromagnetic waves, new electromagnetic shielding materials should meet the requirements of being lightweight with high electrical conductivity. In this work, the combination of silver (Ag) nanoparticles and nitrogen doping (N-doping) was expected to tune the electromagnetic and physical properties of Ti3C2TxMXene, and the Ag@N-Ti3C2Txcomposites were fabricated through the hydrothermal reactions. The nitrogen doped (N-doped) Ag@Ti3C2Txcomposites showed a hollow structure with a pore size of 5 μm. The influence of N-doped degrees on the electromagnetic interference (EMI) shielding performance was investigated over 8–18 GHz. Therefore, the controlled N-doping composites exhibited reflection-based EMI shielding performance due to the electrical conductivity and the special three-dimensional (3D) honeycomb-like structure. The achieved average EMI shielding values were 52.38 dB at the X-band and 72.72 dB at the Ku-band. Overall, the Ag@N-Ti3C2Txfoam, due to its special 3D honeycomb-like structure, not only meets the characteristics of light weight, but also exhibits ultra-high-efficiency EMI shielding performance, revealing great prospects in the application of electromagnetic wave shielding field.Keywords:nitrogen doping;Ag@N-Ti3C2Txcomposites;honeycomb-like structure;electromagnetic interference;multi-reflections
研究领域:
材料科学
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电磁学
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DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2025
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IF 8.9
Miaomiao Ma,Yuhong Qi,Qi’an Chen,Zhanping Zhang
Biofouling of underwater equipment caused by marine organisms is a major problem in the marine industry. Although hydrogel exhibits excellent antifouling properties, its mechanical performance greatly limits its practical application. In this work, a suitable marine antifouling hydrogel (PSM) was designed utilizing a polyethylene glycol–modified MXene (Ti 3 C 2 T x -PEG) toughening mechanism and a silica loaded with nitrogen-doped carbon dots (SiO 2 @N-CDs) reinforcement strategy to enhance the durability of the hydrogel. The PSM hydrogel exhibited a fracture strength of up to 1.62 MPa, elongation of 1734 %, and toughness of 17.7 MJ/m 3 . Furthermore, the PSM hydrogel exhibited excellent photothermal antibacterial properties, with antibacterial rates against E. coli and S. aureus reaching 100%. After 180 days of immersion in seawater, the PSM hydrogel morphology remained stable. Because of its long-term durability and effective antifouling properties, our PSM hydrogel can be developed for use in marine ship coatings.
研究领域:
材料科学
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生物医学工程
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海洋科学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2022
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IF 8.025
Kai-Ning Zhang,Cheng-Zhen Wang,Qiu-Feng Lü,Ming-Hui Chen
Functionalized two-dimensional Ti 3 C 2 T x (TN-EHL) was prepared as an effective adsorbent for removal of methylene blue dye (MB) and copper ions (Cu 2+ ). Enzymatic hydrolysis lignin (EHL), a reproducible natural resource, was used to functionalize the Ti 3 C 2 T x nanosheets. EHL can not only introduce active functional groups into TN-EHL but also prevent the oxidation of Ti 3 C 2 T x , thus promoting the adsorption performance of TN-EHL. The maximum adsorption capacities of TN-EHL50 (in which the EHL content is 50 wt%) for MB and Cu 2+ were 293.7 mg g −1 and 49.96 mg g −1 , respectively. The higher correlation coefficients ( R 2 ) of MB (0.9996) and Cu 2+ (0.9995) indicating that their adsorption processes can be described by the pseudo-second-order kinetic model. The MB adsorption data fit the Freundlich isotherm with R 2 of 0.9953, whereas the Cu 2+ ions adsorption data fit the Langmuir isotherm with R 2 of 0.9998. The thermodynamic analysis indicates that the adsorption process of MB and Cu 2+ on TN-EHL50 is spontaneous and endothermic. Significantly, the Cu 2+ ions were reduced to Cu 2 O and CuO particles during the adsorption process. Therefore, TN-EHL has a great potential as an environmentally friendly adsorbent for MB removal and recovery of Cu 2+ ions from wastewater.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
ACS Applied Nano Materials
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2022
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IF 6.14
Zhiwei Liu,Yan Zhao,Shuang Li,Tianpei Sun,Hansong Liu,Kai Wang,Xiangbao Chen
In this paper, a two-dimensional MXene loaded with CeO2 nanoparticles was successfully synthesized through a simple solvothermal sintering method. The nanocomposite obtained by mixing the CeO2/Ti3C2Tx MXene with paraffin at 30 wt % has a high reflection loss of −47.27 dB at a thickness of 1.9 mm and an effective absorption bandwidth of up to 4.22 GHz which is higher than that of a similar absorbing system. By adjusting the composition ratio and the thickness of the system, almost all S, C, X, and Ku bands can be covered. Its excellent performance benefits from the abundant oxygen vacancies brought by CeO2 nanoparticles in which Ce3+ and Ce4+ ions coexist and the rich microinterfaces brought by the CeO2–C–Ti3C2Tx sandwich structure. In addition, CeO2/Ti3C2Tx MXene nanocomposites also have high thermal stability. This research extends the thought on the design of high-performance microwave-absorbing materials.
研究领域:
材料科学
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电磁材料
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纳米技术
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Jie Wang,Guanshun Xie,Senlin Zhang,Guohao Li,Zhaohui Huang,Xiaohui Li,Xiuqiang Xie,Nan Zhang
Although MXenes have attracted significant attention across diverse fields, they exhibit a pronounced susceptibility to oxidation in aqueous environments, with oxidation significantly accelerated in the presence of transition metal ions (TMI) such as Fe 3+ and Cu 2+ . This limitation impedes the synthesis of transition metal compounds/MXene-based composites and their potential for functional applications. In this study, we elucidate the mechanism of accelerated oxidation of Ti 3 C 2 T x is that Fe 3+ promotes the electron loss in Ti 3 C 2 T x , thus leading to an increased production of hydroxyl radicals ( OH) to oxidize Ti 3 C 2 T x . Furthermore, a rational two-in-one strategy is provided with adding electron-rich ethylenediaminetetraacetic acid disodium zinc salt (ZnNa 2 EDTA) to enhance the stability of Ti 3 C 2 T x by defect filling and electron donation. Consequently, the production of OH is significantly reduced and thus Ti 3 C 2 T x remains well-preserved in the presence of Fe 3+ , which has also effectively enhanced the oxidation stability of Ti 3 C 2 T x in the presence of Cu 2+ . This work is expected to pave a new pathway for targeted applications with coexisting Ti 3 C 2 T x and TMI.
研究领域:
材料科学
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化学
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产品关联
DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Wei Wan,Jie Zhou,Yan Li,Jiamin Xiao,Junrong Luo,Yuqian Yang,Lei Yu,Yuejun Ouyang
Flexible dielectrics with exceptional dielectric properties are highly desirable for various electronic applications. In this study, we successfully fabricated CaCu 3 Ti 4 O 12 (CCTO)/Ti 3 C 2 T x MXene/millable polyurethane (MPU) ternary composite films via a combination of mixing and hot compression techniques. The incorporation of 2D Ti 3 C 2 T x MXene nanosheets at a mass fraction of 4 % significantly enhanced the dielectric properties of the composite films. Specifically, the dielectric constant at 100 Hz increased to 41.1, representing a 14.48 % improvement over the initial CCTO/MPU composite. Meanwhile, the dielectric loss remained low at 0.050, with only a marginal increase of 2.04 %. Additionally, the breakdown strength of the composite films was notably boosted to 19.15 kV/mm, demonstrating a 15.3 % enhancement. These findings highlight the substantial improvement in the dielectric performance of the CCTO/Ti 3 C 2 T x /MPU ternary composite films, showcasing their potential for high-performance electronic applications.
研究领域:
材料科学
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电子工程
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高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 35
·19984-19993
·
IF 12.732
Hao Wang,Peng Hu,Jie Zhou,Maarten B. J. Roeffaers,Bo Weng,Yongqing Wang,Hongbing Ji
Ultrathin 2D/2D Ti3C2Tx/semiconductor (CdS and Bi2MoO6) dual-functional photocatalysts have been constructed for the oxidative coupling of benzylamines to imines combined with H2 generation under visible light irradiation (λ ≥420 nm). The optimal 2D/2D Ti3C2Tx/CdS sample exhibits high photocatalytic performance toward H2 evolution (219.7 μmol g−1 h−1) and imine production (155.8 μmol g−1 h−1), which is 5 times and 6 times higher than that of pure CdS, respectively. In situ irradiated XPS and photoelectrochemical characterizations reveal that the enhanced photoactivity over Ti3C2Tx/semiconductor heterostructures can be attributed to the facilitated charge separation from the semiconductors to the Ti3C2Tx cocatalyst. A possible reaction mechanism is proposed based on in situ FTIR spectroscopy of benzylamine adsorption and imine product desorption and reaction intermediate detection using in situ ESR. This work provides a systematic strategy to construct ultrathin 2D/2D Ti3C2Tx/semiconductor heterojunctions for photocatalytic synthesis of high value-added products combined with H2 generation.
研究领域:
材料科学
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化学工程
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环境科学
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高影响因子
危险品化学品经营许可证（带存储）