CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Xuefeng Zhang,Yong Liu,Shangli Dong,Zhuyu Ye,Yu Guo
A TiO 2 -Ti 3 C 2 T x nanocomposite was prepared using a simple and facile one-step hydrothermal method . The small sized TiO 2 nanoparticles were synthesized and assembled on the surface of Ti 3 C 2 T x nanosheets using Ti 3 C 2 T x itself as titanium source by in-situ technique. The microstructure of TiO 2 -Ti 3 C 2 T x nanocomposite was characterized by means of XRD、FESEM、TEM、XPS and Raman, respectively. The effects of ethanol and hydrothermal holding time on the size of TiO 2 nanoparticles were investigated. The results show that adding proper amount of ethanol into pure water results in decrease of the size of TiO 2 nanoparticles. Under ethanol-water mixed solution, increasing the time of hydrothermal treatment results in growth and even aggregation of TiO 2 nanoparticles. The TiO 2 nanoparticles with average particle size of 30 nm were obtained when the hydrothermal treatment was conducted in ethanol-water mixed solution at 200 ℃ for 12 h.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2024
·
IF 10.5
Yawen Zhang,Chengyi Si,Zhongpan Zhang,Le Li,Xiaoqiang Fan,Minhao Zhu
Self-lubricating coating has sparked significant research interest due to its remarkable tribology performance. However, traditional microcapsules-based self-lubricating coating still faces challenges in long-term serviceability and poor anti-corrosion performance. In this paper, a novel self-lubricating epoxy resin coating was proposed based on hierarchical design and energy wear theory. Microcapsules (MC) containing Polyalphaolefin (PAO40) were prepared via the solvent evaporation approach. Ti 3 C 2 T x MXene (T) with high thermal conductivity was then incorporated into the MC-enhanced epoxy resin coating (EP) to construct the novel self-lubricating EP coating (T-MC-EP). Compared to the EP coating, the thermal conductivity of the T-MC-EP coating increased by 79.4%. Finite element analysis indicated that T constructed thermally conductive network in the coating, serving as the main heat carrier. Furthermore, the wear rate decreased by 91.2%, primarily attributed to the formation of lubricating oil film during friction and the reduction of epoxy resin molecular oxidation fracture caused by friction heat. After 31 days of salt spray testing, the T-MC-EP coating also exhibited superior anti-corrosion performance. This work provides an innovative insight into designing multifunctional coating , including excellent mechanical, thermal, tribological, and anti-corrosive performance.
研究领域:
材料科学
·
化学工程
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 37
·11549-11558
·
IF 6.641
Chunli Hou,Huangzhong Yu,Chengwen Huang
MXenes, a newly interesting family of two-dimensional (2D) materials, have recently attracted wide attention owing to their unique photoelectric properties. In this study, 2D Ti3C2Tx, a classic representative of the MXene family, is fabricated and functioned as a hole transport layer (HTL) in polymer solar cells (PSCs) due to its features of outstanding metallic conductivity, excellent optical transparency, suitable work function, and superior mechanical properties. The Ti3C2Tx nanosheets deposited from neutral solutions are incorporated between the photoactive layer and the anode electrode as HTLs to facilitate charge transport and collection characteristics in PSCs. The results show that the Ti3C2Tx film possesses good light transmission and high conductivity. The photovoltaic characteristics of the Ti3C2Tx-based devices are systematically investigated. It is demonstrated that the incorporation of Ti3C2Tx as a HTL endows PSCs with superior charge extraction capability, exhibiting a significantly higher power conversion efficiency (PCE) of 10.53% than that of the only ITO-based device (4.21%) with PBDB-T as the donor and ITIC as the acceptor. Such photovoltaic performance also outperforms that of the state-of-the-art PEDOT:PSS-based devices (10.11%). Furthermore, the Ti3C2Tx-based device also shows better long-term stability under atmospheric conditions without any encapsulation than the PEDOT:PSS devices, which indicates that the 2D Ti3C2Tx material possesses great potential in PSCs.
研究领域:
材料科学
·
能源科学
·
光伏技术
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2024
·Vol. 14
·期 22
·1835
·
IF 4.4
Chong Li,Ran Tao,Jinqiao Hou,Huanming Wang,Chen Fu,Jingting Luo
Ammonia (NH 3 ) gas is prevalent in industrial production as a health hazardous gas. Consequently, it is essential to develop a straightforward, reliable, and stable NH 3 sensor capable of operating at room temperature. This paper presents an innovative approach to modifying SnO 2 colloidal quantum dots (CQDs) on the surface of Ti 3 C 2 T x MXene to form a heterojunction, which introduces a significant number of adsorption sites and enhances the response of the sensor. Zero-dimensional (0D) SnO 2 quantum dots and two-dimensional (2D) Ti 3 C 2 T x MXene were prepared by solvothermal and in situ etching methods, respectively. The impact of the mass ratio between two materials on the performance was assessed. The sensor based on 12 wt% Ti 3 C 2 T x MXene/SnO 2 composites demonstrates excellent performance in terms of sensitivity and response/recovery speed. Upon exposure to 50 ppm NH 3 , the frequency shift in the sensor is −1140 Hz, which is 5.6 times larger than that of pure Ti 3 C 2 T x MXene and 2.8 times higher than that of SnO 2 CQDs. The response/recovery time of the sensor for 10 ppm NH 3 was 36/54 s, respectively. The sensor exhibited a theoretical detection limit of 73 ppb and good repeatability. Furthermore, a stable sensing performance can be maintained after 30 days. The enhanced sensor performance can be attributed to the abundant active sites provided by the accumulation/depletion layer in the Ti 3 C 2 T x /SnO 2 heterojunction, which facilitates the adsorption of oxygen molecules. This work promotes the gas sensing application of MXenes and provides a way to improve gas sensing performance.
研究领域:
材料科学
·
传感器
·
纳米技术
·
环境监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Zhe Liu,Xichao Mo,Shuhao Tian,Jie Chen,Yanpeng Liu,Haiyang Wu,Yawei Zhao,Yanrong Wang,Shanglong Peng
As one of the two-dimensional (2D) nanomaterials , MXene exhibits great potential on gas-sensing owing to its high specific area, rich functional groups and great charge transfer mobility. Herein, electrostatic adsorption and calcination strategies were taken for ZIF-derived Co 3 O 4 and alkalized Ti 3 C 2 T x MXene to fabricate Co 3 O 4 /MX7.5 heterojunction . It can be found that Co 3 O 4 nanoparticles (NPs) uniformly grow on the surface of alkalized Ti 3 C 2 T x . Alkalized Ti 3 C 2 T x with lower work function (lower than 3.9 eV) can transfer more electrons towards Co 3 O 4 and promote the redox of Co 2+ . These increased Co 2+ ions can help to adsorb more adsorbed oxygen and produce more oxygen defects, which enhances contact interaction between ethanol molecules and adsorption sites. The formation of heterojunction between Co 3 O 4 and MXene is observed by UV–vis spectra, and this interface effect enhances the ability of gas sensors. Therefore, the sensors based on the obtained Co 3 O 4 /MX7.5 heterojunction can operate at a relatively low temperature (140 °C) with a response of 3500 % and a low detection limit of 1 ppm. And it also delivers long-term stability (about 30 days). This work demonstrates practical application for detecting ethanol at a relatively low working temperature and keeping their response in a long term.
研究领域:
材料科学
·
纳米科技
·
传感器技术
·
表面化学
·
功能材料
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xiaoyu Mao,Changhua Li,Xiaofeng Zhang,Hao Chen,Chao Zhang,Rui Gou,Yi He
In this study, we developed a composite material comprising UIO-66-NH 2 encapsulated tannic acid (TA) loaded on Ti 3 C 2 Tx to improve the corrosion resistance of water borne epoxy (WEP) coatings. The successful synthesis of the material was determined by FT-IR, XRD, XPS, EDS, TGA, SEM and TEM characterization. Furthermore, ultraviolet (UV)tests were conducted to evaluate the release rate of TA at varying pH levels, revealing a release rate of approximately 95 % at pH 2. Electrochemical impedance spectroscopy (EIS) results over 60 d indicated that the R c value of TU-T/WEP remained unchanged at 3.934 × 10 8 , demonstrating a two-order magnitude increase compared to those of pure epoxy coatings, attributed to the synergistic active and passive protection of TU-T materials. The self-healing ability of the TU-T/WEP coating was validated through manual scratch experiments. Additionally, the EIS test showed that the R c value of TU-T/WEP coating increased to 3.5 × 10 5 after 72 h, representing a two-order magnitude increase over that of the WEP coating alone. This study introduces a novel approach using green tannic acid as a corrosion inhibitor and amino-functionalized Ti 3 C 2 Tx with UIO-66-NH 2 to enhance corrosion resistance and self-healing aproperties of coatings.
研究领域:
材料科学
·
腐蚀工程
·
表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Qiyue Jia,Hongyu Gao,Wenling Du,Jiaxin Bai,Mei Li,Jiansheng Liu,Zhanli Chai
Expediting the separation and transfer of photogenerated carriers is crucial for plasmonic materials to improve the performance of photocatalysts. However, it remains a significant challenge to strengthen the local surface plasma resonance (LSPR) through the modulation of surface functional groups. Herein, Ti 3 C 2 T x MXene is combined with two typical semiconductor materials to form Ti 3 C 2 T x /CdS (TCS) with dominated surface O x groups and Ti 3 C 2 T x /C 3 N 4 (TCN) with surface-terminated F x species. The obtained TCS composite shows a higher photocatalytic performance (96.7 %) than TCN (86.7 %) and the corresponding bare catalysts in the degradation of tetracycline within 60 min under visible-light irradiation. Moreover, the degradation rate of Ti 3 C 2 T x /CdS composite decreases by only 2.3 % after 4 cycles photocatalytic process, which is more stable than Ti 3 C 2 T x /C 3 N 4 (3.3 %) and CdS (39.3 %). The improved photocatalytic activity and stability mainly result from the enhanced LSPR effect of Ti 3 C 2 T x MXene. In particular, the better performance of TCS compared to TCN indicates that the LSPR effect is highly related to the surface-terminated [O]/[F] ratio. These results directly provide a strategy to enhance the electric field dynamics of MXene materials for improving photocatalytic performance.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Technologies
·
2020
·Vol. 5
·期 8
·2000272
·
IF 5.969
Xingxing Li,Yanan Ma,Peizhi Shen,Chuankun Zhang,Minglei Cao,Shaojun Xiao,Jinfeng Yan,Shijun Luo,Yihua Gao
Ti 3 C 2 T x MXene, as a new 2D material, with unique physical and chemical properties, is ideal for building high performance miniaturized electrochemical energy storage devices. However, the operating voltage window of Ti 3 C 2 T x based microsupercapacitor (MSC) in symmetric structure is very narrow (≤0.6 V), which affects its practical application. Herein, a flexible asymmetric microsupercapacitor (AMSC) based on Ti 3 C 2 T x //polypyrrole (PPy)/MnO 2 is reported, where Ti 3 C 2 T x is deposited on graphite paper (GP) by electrophoresis method as negative electrodes, MnO 2 and PPy are electrochemically deposited on GP successively as positive electrodes, and polyvinyl alcohol/sulfuric acid (PVA/H 2 SO 4 ) as the quasi-solid electrolyte. This AMSC based on Ti 3 C 2 T x //PPy/MnO 2 operates at 1.2 V voltage window, which is two times wider than symmetric Ti 3 C 2 T x based MSC. And its maximum areal capacitance and areal energy density can reach up to 61.5 mF cm −2 and 6.73 µWh cm −2 respectively. Moreover, three above AMSCs in series connection can turn on three lights after being charged. And the AMSC also shows high flexibility under mechanical bending level (bending angle with 0°–180°). The flexible AMSC based on Ti 3 C 2 T x //PPy/MnO 2 with ultrahigh energy density is a promising candidate for exploiting and fabricating next-generation miniature integrated energy storage devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
ACS Nano
·
2017
·
IF 13.942
Li Zhao,Biliang Dong,Shaozhou Li,Lijun Zhou,Linfei Lai,Zhiwei Wang,Shulin Zhao,Min Han,Kai Gao,Min Lu,Xiaoji Xie,Bo Chen,Zhengdong Liu,Xiangjing Wang,Hao Zhang,Hai Li,Juqing Liu,Hua Zhang,Xiao Huang,Wei Huang
Two-dimensional (2D) metal–organic framework (MOF) nanosheets have been recently regarded as the model electrocatalysts due to their porous structure, fast mass and ion transfer through the thickness, and large portion of exposed active metal centers. Combining them with electrically conductive 2D nanosheets is anticipated to achieve further improved performance in electrocatalysis. In this work, we in situ hybridized 2D cobalt 1,4-benzenedicarboxylate (CoBDC) with Ti3C2Tx (the MXene phase) nanosheets via an interdiffusion reaction-assisted process. The resulting hybrid material was applied in the oxygen evolution reaction and achieved a current density of 10 mA cm–2 at a potential of 1.64 V vs reversible hydrogen electrode and a Tafel slope of 48.2 mV dec–1 in 0.1 M KOH. These results outperform those obtained by the standard IrO2-based catalyst and are comparable with or even better than those achieved by the previously reported state-of-the-art transition-metal-based catalysts. While the CoBDC layer provided the highly porous structure and large active surface area, the electrically conductive and hydrophilic Ti3C2Tx nanosheets enabled the rapid charge and ion transfer across the well-defined Ti3C2Tx–CoBDC interface and facilitated the access of aqueous electrolyte to the catalytically active CoBDC surfaces. The hybrid nanosheets were further fabricated into an air cathode for a rechargeable zinc–air battery, which was successfully used to power a light-emitting diode. We believe that the in situ hybridization of MXenes and 2D MOFs with interface control will provide more opportunities for their use in energy-based applications.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Hazardous Materials Advances
·
2023
·
IF 0
Chunhu Tan,Tingting Zhang,Gongying Wang,Libin Zhang,Chang Liu,Weihua Li,Jiansheng Li,Rui Lu
Currently, despite the wide application of Ti 3 C 2 T x in various fields, little information is available regarding its toxicity to humans, thus, it is necessary to study its interactions with human proteins as well as its biotoxicity. In the study, spectroscopic analysis and molecular simulation were used to investigated the interaction mechanism between human serum albumin (HSA) and Ti 3 C 2 T x with different oxidation degrees. The three prepared Ti 3 C 2 T x materials with different oxidation degrees were analyzed by X-ray diffractometer, X-ray photoelectron spectroscopy, scanning electron microscope and transmission electron microscope, and the results demonstrated that TiO 2 nanoparticles were formed during the oxidation process. In conclusion, the results of the ultra violet spectrum, fluorescence spectra and zeta potential measurements showed that fully oxidized Ti 3 C 2 T x (F-Ti 3 C 2 T x ) had a greater binding ability to HSA than unoxidized Ti 3 C 2 T x (U-Ti 3 C 2 T x ), followed by partially oxidized Ti 3 C 2 T x (P-Ti 3 C 2 T x ). Based on synchronous fluorescence, circular dichroism and infrared characterization, it has been determined that with a gradual increase of Ti 3 C 2 T x oxidation degree, its effect on the conformation of HSA increases, followed by F-Ti 3 C 2 T x > P - Ti 3 C 2 T x > U - Ti 3 C 2 T x . Further analysis of the fluorescence binding ability revealed that hydrogen bonds played a major role in the interaction between HSA and Ti 3 C 2 T x .
研究领域:
生物化学
·
毒理学
·
材料科学
✓ 已验证
DOI
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Hang Xu,Mingjing Ge,Yin Liu,Chen Yao,Houzhen Zhou,Mingmei Ding,Yang Li
Singlet oxygen ( 1 O 2 ) is an electrophilic oxidant capable of selectively eliminating contaminants in complex wastewater, which is highly expected in environmental remediation. However, due to the limitations in synthesizing catalysts with well-defined adsorption and active sites, the efficient and selective generation of 1 O 2 remains challenging. Herein, isolated Ru-O 3 moiety decorated two-dimensional Ti 3 C 2 T x catalysts (Ru-SA/Ti 3 C 2 T x ) were prepared to regulate 1 O 2 generation via peroxymonosulfate (PMS) activation. The constructed catalysts with asymmetric dual-metal structures (Ti-O-Ru) exhibited surprising mass activity of 1.4 × 10 4 min −1 ·mol −1 with a high 1 O 2 generation selectivity of 98.3 %. Mechanism inquiry indicated that the enhanced adsorption and electron transfer between PMS and Ru-SA/Ti 3 C 2 T x attributed to the synergistic effect of the strong adsorption at the Ru sites and the rapid electron transfer in the asymmetric Ti-O-Ru structures. Theoretical calculations demonstrated that Ru-O 3 moiety decreased the formation energy barrier of key intermediate *O, thus converting to a 1 O 2 -dominated oxidation path. Two possible degradation pathways of tetracycline hydrochloride (TCH) were proposed by gas chromatography-mass spectrometry (GC–MS), and the toxicities of intermediates were significantly decreased due to the strong electrophilic attack of 1 O 2 . This study deepened the understanding of the specific contribution of individual sites in multi-site synergistic, which furnished implications for the design and optimization of Fenton-like catalysts.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xiaoyang Zhu,Yang Zhang,Yu Zhang,Panpan Xie,Yunchuan Liu,Wenhui Zhang,Shenao Zhang,Yusen Wang,Guan Wu,Wangyang Lu,Nan Li
Customizing smart clothing for monitoring the physiological and vital sign information in real time has raised demands for wearable sensors with rapid response, good stability, high sensitivity and excellent mechanical properties. Herein, a flexible high-entropy doped oxide Cu 0.9 Fe 0.06 Ni 0.01 Cr 0.01 Co 0.01 Mn 0.01 (HE-Cu 2 O) nanoparticle modified Ti 3 C 2 T x (HECT) fiber was prepared through a facile hydrothermal growth and heat treatment process. Due to rich active sites, high reactivity and large surface area, HE-Cu 2 O appears impressive detection ability, admired adsorption inclination and exceptional reaction kinetics, confirming by DFT calculation. What’s more, the covalent coupling between the Ti 3 C 2 T x conductive frameworks and HE-Cu 2 O nanoparticles can further avoid the negative influence of metal oxide on the electronic conductivity, ensuring fast electron transfer rate. As a result, the HECT fiber can be operated in DA/PBS solution with reliable electrocatalyst properties, including low detection limit (1 μM), rapid response rate (<2 s), remarkable long-term cycling performance (100 cycling) and excellent reproducibility (RSD ≈ 2.01 %). Additionally, when the HECT fiber, matching with the Ag/AgCl electrode and Pt wire, weaves into the garment, the integrated system retains obvious response level, less response time (<5 s) and outstanding electrocatalyst performance under dynamic situations (bending, running, rope skipping and doing yoga), demonstrating a potential in practical application.
研究领域:
材料科学
·
生物医学工程
·
传感器技术
✓ 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）