Materials
·
2019
·Vol. 12
·期 1
·188
·
IF 2.972
Kaicheng Zhang,Guobing Ying,Lu Liu,Fengchen Ma,Lin Su,Chen Zhang,Donghai Wu,Xiang Wang,Ying Zhou
Ti3C2Txand Ti3C2Tx-NiO composites with three-dimensional (3D) porous networks were successfully fabricated via vacuum freeze-drying. The microstructure, absorption, and electrochemical properties of the developed composites were investigated. Nickel oxide (NiO) nanoparticles could be evenly distributed on the three-dimensional network of three-dimensional Ti3C2Txusing solution processing. When employed as electrochemical capacitor electrodes in 1 M environmentally friendly sodium sulfate, Na2SO4, solution, the three-dimensional porous Ti3C2Tx-NiO composite electrodes exhibited considerable volume specific capacitance as compared to three-dimensional porous Ti3C2Tx. The three-dimensional porous Ti3C2Tx-NiO composite delivered a remarkable cycling performance with a capacitance retention of up to 114% over 2500 cycles. The growth trend of the capacitance with NiO content shows that nickel oxide plays a crucial role in the composite electrodes. These results present a roadmap for the development of convenient and economical supercapacitors in consideration with the possibilities of morphological control and the extensibility of the process.Keywords:MXene;porous Ti3C2Tx-NiO composite;freeze-drying;electrode;supercapacitor
研究领域:
材料科学
·
电化学
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产品关联
DOI
PubMed
高影响因子
SENSORS
·
2024
·Vol. 24
·期 8
·2604
·
IF 3.4
Zhihua Zhao,Zhenli Lv,Zhuo Chen,Baocang Zhou,Zhigang Shao
Metal oxide semi-conductors are widely applied in various fields due to their low cost, easy processing, and good compatibility with microelectronic technology. In this study, ternary α-Fe2O3/TiO2/Ti3C2Txnanocomposites were prepared via simple hydrothermal and annealing treatments. The composition, morphology, and crystal structure of the samples were studied using XPS, SEM, EDS, XRD, and multiple other testing methods. The gas-sensing measurement results suggest that the response value (34.66) of the F/M-3 sensor is 3.5 times higher than the pure α-Fe2O3sensor (9.78) around 100 ppm acetone at 220°C, with a rapid response and recovery time (10/7 s). Furthermore, the sensors have an ultra-low detection limit (0.1 ppm acetone), excellent selectivity, and long-term stability. The improved sensitivity of the composites is mainly attributed to their excellent metal conductivity, the unique two-dimensional layered structure of Ti3C2Tx, and the heterojunction formed between the nanocomposite materials. This research paves a new route for the preparation of MXene derivatives and metal oxide nanocomposites.
研究领域:
材料科学
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传感器技术
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纳米技术
✓ 已验证
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Meihong Fan,Lijia Liu,Yue Li,Fengyun Gu,Xingquan He,Hui Chen
The industrialization of hydrogen production technology through polymer electrolyte membrane water splitting faces challenges due to high iridium (Ir) loading on the anode catalyst layer. While rational design of oxygen evolution reaction (OER) electrocatalysts aimed at effective iridium utilization is promising, it remains a challenging task. Herein, we present exfoliated Ti 3 C 2 T x MXene as a highly conductive and corrosion-resistant support for acidic OER. We develop an alcohol reduction method to achieve uniform and dense loading of ultrafine Ir nanoparticles on the MXene surface. The IrO 2 /TiO x heterointerface is formed in situ on the Ir@Ti 3 C 2 T x MXene surface, acting as a catalytically active phase for OER during electrocatalysis. The electron interactions at the IrO 2 /TiO x heterointerface create electron-rich Ir sites, which reduce the adsorption properties of oxygen intermediates and enhance intrinsic OER activity. Consequently, the prepared Ir@Ti 3 C 2 T x exhibits a mass activity that is 7 times greater than that of the benchmark IrO 2 catalyst for OER in acidic media. In addition, the /Ti 3 C 2 T x MXene support can stabilize the Ir nanoparticles, so that the stability number of Ir@Ti 3 C 2 T x MXene is about 2.4 times higher than that of the IrO 2 catalyst.
研究领域:
材料科学
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电化学
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催化科学
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DOI
PubMed
高影响因子
ANALYST
·
2021
·Vol. 146
·期 24
·7593-7600
·
IF 4.616
Ling Lei,Caoling Li,Wensheng Huang,Kangbing Wu
Developing a sensitive and rapid detection method for 4-chlorophenol (4-CP) and 4-nitrophenol (4-NP) is very important due to their high toxicity. In this work, bulk Ti3AlC2 powder was etched to Ti3C2Tx for the first time through a hydrothermal reaction in NaF/HCl solution. After ultrasonication in N-methylpyrrolidone (NMP), Ti3C2Tx powder was successfully exfoliated into multilayered Ti3C2Tx nanosheets (i.e. Ti3C2Tx MXene). The prepared Ti3C2Tx MXene not only has a large electrochemical surface area for the oxidation of 4-CP and 4-NP, but also lowers their electron transfer resistance. As a result, the oxidation signals of 4-CP and 4-NP are significantly improved on the surface of the Ti3C2Tx MXene. Based on the remarkable signal amplification of the Ti3C2Tx MXene, a sensitive and rapid method was developed for the simultaneous detection of 4-CP and 4-NP. The linear range is from 0.1 to 20.0 μM for 4-CP, and from 0.5 to 25.0 μM for 4-NP, with detection limits of 0.062 μM (4-CP) and 0.11 μM (4-NP). This method was used in wastewater samples, and the accuracy was confirmed to be good by high-performance liquid chromatography.
研究领域:
环境科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
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2023
·
IF 5.9
Ning Chen,Shaohua Wei,Yongjun Feng,Shui Hu,Ying Tang,Wenqiang He,Yabin Zhang,Ding Cao,Zhifeng Fu
Electromagnetic absorbing materials (EMAs) are materials that irreversibly convert electromagnetic waves into another type of energy. With the development of communication technology, electromagnetic absorption materials have broad prospects in smart phones, wearable devices, and aerospace. MXenes have excellent dielectric loss properties, and the synthesis and application of MXene functional materials with magnetic properties will be one of the hotspots and focuses of future research. In this study, magnetic Co-Ti3C2Tx MXenes were prepared by molten salt etching, and Co-Ti3C2Tx/Fe2O3/polyacrylonitrile (PAN) hollow fiber composites with double-loss capability were prepared by coaxial electrospinning technology. The maximum reflection loss of the Co-Ti3C2Tx/Fe2O3/PAN hollow fiber can reach −54.62 dB at 9.86 GHz, and the effective absorption bandwidth is 6.39 GHz. The Co-Ti3C2Tx/Fe2O3/PAN hollow fibers with excellent electromagnetic absorption capability exhibit potential for efficient EMA materials due to their synergistic effect of impedance matching and magnetic/dielectric loss.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
MICROCHIMICA ACTA
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2024
·Vol. 191
·期 7
·1-11
·
IF 5.3
Zhao Zhihua,Yao Longqi,Zhang Shuaiwen,Shi Qingsheng,Rahmatullah Abu Bakker Md,Wu Lan
Industrialization and agricultural demand have both improved human life and led to environmental contamination. Especially the discharge of a lot of poisonous and harmful gases, including ammonia, ammonia pollution has become a pressing problem. High concentrations of ammonia can pose significant threats to both the environment and human health. Therefore, accurate monitoring and detection of ammonia gas are crucial. To address this challenge, we have developed an ammonia gas sensor using In(OH) 3 /Ti 3 C 2 T x nanocomposites through an in-situ electrostatic self-assembly process. This sensor was thoroughly characterized using advanced techniques like XRD, XPS, BET, and TEM. In our tests, the I/M-2 sensor exhibited remarkable performance, achieving a 16.8% response to 100 ppm NH 3 at room temperature, which is a 3.5-fold improvement over the pure Ti 3 C 2 T x MXene sensor. Moreover, it provides swift response time (20 s), high response to low NH 3 concentrations (≤ 10 ppm), and excellent long-term stability (30 days). These exceptional characteristics indicate the immense potential of our In(OH) 3 /Ti 3 C 2 T x gas sensor in ammonia detection. Graphical Abstract
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymers
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2022
·Vol. 14
·期 10
·1992
·
IF 4.967
Weijing Zhao,Jie Cao,Fucheng Wang,Fajuan Tian,Wenqian Zheng,Yuqian Bao,Kaiyue Zhang,Zhilin Zhang,Jiawen Yu,Jingkun Xu,Ximei Liu,Baoyang Lu
Stretchable, adhesive, and conductive hydrogels have been regarded as ideal interfacial materials for seamless and biocompatible integration with the human body. However, existing hydrogels can rarely achieve good mechanical, electrical, and adhesive properties simultaneously, as well as limited patterning/manufacturing techniques posing severe challenges to bioelectronic research and their practical applications. Herein, we develop a stretchable, adhesive, and conductive Ti3C2Tx-polyacrylic acid hydrogel by a simple pre-crosslinking method followed by successive direct ink writing 3D printing. Pre-polymerization of acrylic acid can be initiated by mechanical mixing with Ti3C2Txnanosheet suspension, leading to the formation of viscous 3D printable ink. Secondary free radical polymerization of the ink patterns via 3D printing can achieve a stretchable, adhesive, and conductive Ti3C2Tx-polyacrylic acid hydrogel. The as-formed hydrogel exhibits remarkable stretchability (~622%), high electrical conductivity (5.13 S m−1), and good adhesion strength on varying substrates. We further demonstrate the capability of facilely printing such hydrogels into complex geometries like mesh and rhombus patterns with high resolution and robust integration.Keywords:MXene;conductive hydrogel;3D printing;pre-crosslinking;adhesion
研究领域:
材料科学
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生物医学工程
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纳米技术
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3D打印
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产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2021
·Vol. 13
·期 1
·1-13
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IF 16.419
Qu Danyao,Jian Yingying,Guo Lihao,Su Chen,Tang Ning,Zhang Xingmao,Hu Wenwen,Wang Zheng,Zhao Zhenhuan,Zhong Peng,Li Peipei,Du Tao,Haick Hossam,Wu Weiwei
An organic solvent-assisted intercalation and collection (OAIC) approach for preparing Ti 3 C 2 T x (MXene) was developed.
The features of OAIC approach are the low requirement for facility, gram-level preparation with remarkable yield and easy control over the dimension of Ti 3 C 2 T x flakes.
The Ti 3 C 2 T x flakes prepared by OAIC approach showed the outstanding capacitive and rate performance.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2021
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IF 5.816
Jingjun Liu,Haiping Zhou,Jiajie Fan,Quanjun Xiang
With photoconductor being transferred and separated, interface contact plays a crucial role in developing composites photocatalyst . In the present work, 2D crystalline g-C 3 N 4 (called as CCN) with 2D TiO 2 nanosheets (called as TO) obtained in situ oxidized single-layered Ti 3 C 2 T x MXene is designed by an electrostatic self-assembly technology. This CCN/TO nanosheets system with a few TiO 2 nanosheets distributed to the surface is not only prolonging lifetime of photoelectron but also stimulating photogenerated carriers transferred in contact interface. The electron transfer mechanism of CCN/TO is further proved by Pt photo-deposition method. Therein, the optimal CCN-TO-0.6 exhibits excellent performance of H 2 generation compared with single photocatalyst of CCN. The result shows that the crystalline g-C 3 N 4 photocatalysts introduced TiO 2 with interfacial effect favorably reduce H + to H 2 and enhance photocatalytic activity .
研究领域:
材料科学
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光催化
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Xinmeng Zhang,Yakun Li,Wanyin Ge
Dopamine (DA) is a small biological molecule that causes a variety of diseases when its concentration is abnormal. Therefore, highly sensitive detection of DA is very important for the development of biomedicine and monitoring of human health. Herein, we prepared a carbon cloth (CC)/Ti3C2Tx/NiCoP composite as a highly sensitive electrochemical sensor for DA detection. Porous NiCoP was grown on the surface of CC and Ti3C2Tx by hydrothermal and phosphating treatments. The composite integrated the advantages of large specific surface area of zero-dimensional NiCoP quantum dots, rich electrochemical active sites of one-dimensional porous NiCoP nanowires, hydrophilicity of two-dimensional Ti3C2Tx nanosheets, and high conductivity of three-dimensional CC substrates. The sensor has high sensitivity (31.4101 μA μM–1 cm–2), wide detection range (0.17–784.55 μM), low detection limit (0.18 nM), elevated stability, and anti-interference ability. By analyzing the conductivity, hydrophilicity, and electrochemically active surface area of the CC/Ti3C2Tx/NiCoP composite, the reasons for its excellent performances are revealed for DA detection. At present, the research on NiCoP mainly focuses on hydrogen evolution, oxygen evolution, and supercapacitor. This research provides a regulatory strategy for the application of phosphide materials in sensors.
研究领域:
材料科学
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生物医学工程
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Qing-Ming Wang,Zhen-Hui Liu,Qiu-Feng Lü
Traditional separation materials based on Ti 3 C 2 T x modification are susceptible to contamination by oily substances and have single performance, which limits their applications in treatment of actual oily wastewater. Here, to improve the hydrophilicity and stability of Ti 3 C 2 T x , EHL-functionalized Ti 3 C 2 T x (EHL-Ti 3 C 2 T x ) was prepared by enzymatic hydrolysis lignin (EHL) forming secondary bonds with the terminal oxygen-containing groups on the surface of Ti 3 C 2 T x . EHL-Ti 3 C 2 T x was further coated on polyurethane (PU) sponge to construct rough structures, enabling the modified EHL-Ti 3 C 2 T x @PU sponge superhydrophilic/underwater superoleophobic wettability to achieve separation efficiency above 99.5% for different oil/water mixtures. Especially, the maximum permeation flux of EHL-Ti 3 C 2 T x @PU for cyclohexane/water mixture separation is up to 231,321 L m −2 h −1 . In addition, the functionalized interface constructed by EHL- Ti 3 C 2 T x on mixed cellulose ester (MCE) membrane exhibits high permeability to malachite green and methylene blue cationic dyes with rejection rates of 99.1% and 98.1%, respectively. Therefore, two separation materials obtained by decorating EHL-Ti 3 C 2 T x on PU and MCE substrates have extremely potential in treating complex wastewater.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Hua Tian,Zhiwei Guo,Wenjun Zhao,Lin Wang,Deqi Kong,Yanyan Wang,Lixin Zhang,Lingyu Li,Ran Sun,Ruohan Li,Jian Song
Hybrid layers composed of polyacrylic acid and Ti 3 C 2 T x MXene are coated on the surface of Zn foils via electrophoresis deposition processes , realizing the construction of an artificial protective coating with the pre-introduction of excess Zn 2+ towards suppressing Zn 2+ 2D diffusion of Zn deposition behavior . In this case, the abundant carboxyl groups of polyacrylic acid benefit to the fast transport of Zn 2+ in addition to the shield of anions and oxidants, restraining the corrosion and passivation of Zn metal anodes. Moreover, the appearance of Ti 3 C 2 T x MXene with two-dimensional arrangements strengthens the structure stability and improves the hydrophilicity of hybrid layers so as to restrict the dendrite growth of Zn metal anodes. Accordingly, polyacrylic acid/Ti 3 C 2 T x MXene hybrid layer coated Zn electrodes in symmetric cells achieve a lifespan of over 1000 h at a current density of 3 mA cm −2 and an areal capacity of 3 mAh cm −2 , superior to pristine Zn electrodes (107 h) and polyacrylic acid layer coated Zn electrodes (401 h). The full cell based on polyacrylic acid/Ti 3 C 2 T x MXene hybrid layer coated Zn anodes and Na 0.33 V 2 O 5 cathodes also exhibits a high capacity retention of 98.6 % after 1000 cycles at a current density of 5 A g −1 .
研究领域:
材料科学
·
电化学
✓ 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）