JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Siqi Gong,Fan Zhao,Yaning Zhang,Huiting Xu,Meng Li,Junjie Qi,Honghai Wang,Zhiying Wang,Yuqi Hu,Xiaobin Fan,Wenchao Peng,Chunli Li,Jiapeng Liu
MXene has drawn considerable attention in energy storage due to particular physicochemical properties. At present, among most near-ambient temperature preparation methods, water is usually served as the main solvent. However, MXene is usually subjected to fast structural degradation on account of water molecules attacking in aqueous solution. Herein, we report a novel water-free etching strategy for synthesizing few-layered Ti 3 C 2 T x MXenes in deep eutectic solvents at near-ambient temperature. Benefitting from the absence of water and macromolecular structure of deep eutectic solvents, the as-synthesized few-layered Ti 3 C 2 T x (DES-Ti 3 C 2 T x ) MXene presents abundant −O terminations and low oxidation degree. As a consequence, the DES-Ti 3 C 2 T x MXene displays excellent specific capacitance of 320 F/g at 2 mV/s. Impressively, the DES-Ti 3 C 2 T x MXene exhibits splendid long-term stability that 97% specific capacitance retention can be acquired over 50 000 cycles at high current density of 50 A/g. Therefore, this study offers a new thought for preparing high performance MXene-based materials by water-free etching method.
研究领域:
材料科学
·
能源存储
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 10
·期 2
·2201767
·
IF 6.389
Min Luo,Junchang Guo,Wenchao Shui,Yao Tan,Haoming Huang,Qinghui Yang,Huaiwu Zhang,Xu Deng,Qi-Ye Wen
Porous polymer-based Terahertz (THz) absorbers possess strong absorption with broadband, lightweight, and flexible features. Thus these are widely desired in THz electromagnetic shielding, radar-cross-section reduction, radiometer calibration, etc. However, the harsh environment of humidity, corrosiveness, and dustiness undermines the performance and service lifetime of the porous absorbers. Here, based on Ti 3 C 2 T x MXene sponge composite foam (MSF), a superhydrophobic broadband THz absorber on a large pore-size porous architecture by a joint hydrophobic strategy is realized. Results show that the apparent contact angles and roll-off angles of the modified MSF reached 159.0° and 7.6°, while maintaining an ultra-high absorption rate of 99.6% in the frequency range of 0.3–1.2 THz. Furthermore, the special Micro-Nano hierarchical structures render the absorber a strong bounce-off ability to the droplets of an aqueous solution. These water-repellent properties endow the absorber the versatility of self-cleaning and anti-corrosion, thus can be widely applied in many scenarios including THz remote sensing, communication, and security screening as well.
研究领域:
材料科学
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电磁学
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2021
·
IF 9.501
Jie Zhang,Fengli Li,Haoqin Zhang,Rui Ding,Jingtao Wang,Wenpeng Li
Monovalent selective ion-exchange membranes with characteristics of interception of multivalent ions and passage of monovalent ions , have aroused widespread research interest. However, most of monovalent selective ion-exchange membranes are dense polymer membranes, which suffer from low ion flux. Herein, a highly aligned two-dimensional (2D) thin anion lamellar composite membrane was developed successfully to address this weakness by assembling sulfonated Ti 3 C 2 T x ( STi 3 C 2 T x ) nanosheets on quaternized-chitosan (QCS) modified commercial Nylon-66 microfiltration membrane (N66). The QCS modified N66 that provides continuous sites and the STi 3 C 2 T x lamellar ion channel that endows electrostatic repulsion and ion steric effect synergistically enhance the flux and selectivity of the composite membrane. Concretely, the resultant 2D thin anion lamellar composite membrane (N66-QCS/STi 3 C 2 T x ) achieves a high Cl − /SO 4 2− selectivity and Cl − flux of 14.67 and 20.35 × 10 −8 mol s −1 cm −2 , which are 1.94 and 3.08 times higher than the commercial Neosepta ACS (7.56 and 6.60 × 10 −8 mol cm −2 s −1 ). Furthermore, the negatively charged N66-QCS/STi 3 C 2 T x shows favorable hydrophilicity and sufficient antifouling potential. The strategy of fabricating sulfonated Ti 3 C 2 T x anion-exchange membrane provides fundamental information for the rational design of separation membranes that target to acquire high comprehensive performance.
研究领域:
材料科学
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化学工程
·
分离技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Xudong Liu,Yong Liu,Shangli Dong,Xuefeng Zhang,Yidan Wei,Lu Lv,Sirui He
Channel (hole and interlayer) engineering on two-dimensional (2D) MXenes has been proven to be an effective strategy to solve the issues of congested ion transport pathways, limited active sites, and sluggish ion transport kinetics caused by restacking of MXene nanosheets, which extended the application in the field of energy storage. Herein, a simple channel engineering strategy was proposed to treat the long-term stored Ti3C2Tx nanosheets, resulting in formation of an interlayer-expanded holey Ti3C2Tx film via etching out Ti3C2Tx oxides. The in situ oxides expanded the interlayer spacing and created holes on the Ti3C2Tx nanosheets, which formed channels in all directions. The interlayer-expanded holey Ti3C2Tx film showed outstanding electrochemical performance, with both high capacity (448 F g–1 at 2 mV s–1) and good cyclic stability (95.3% retention after 5000 cycles). Importantly, this strategy effectively recycles the waste MXenes that are oxidized by long-term storage, which embodies the concept of low carbon and environmental protection and promotes the industrialization process of MXenes.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ELECTROPHORESIS
·
2022
·Vol. 43
·期 20
·2033-2043
·
IF 3.595
Bin Ran,Chaozhan Chen,Bo Liu,Minbo Lan,Huaying Chen,Yonggang Zhu
The detection of cancer biomarkers is of great significance for the early screening of cancer. Detecting the content of sarcosine in blood or urine has been considered to provide a basis for the diagnosis of prostate cancer. However, it still lacks simple, high-precision and wide-ranging sarcosine detection methods. In this work, a Ti 3 C 2 T X /Pt–Pd nanocomposite with high stability and excellent electrochemical performance has been synthesized by a facile one-step alcohol reduction and then used on a glassy carbon electrode (GCE) with sarcosine oxidase (SO x ) to form a sarcosine biosensor (GCE/Ti 3 C 2 T X /Pt–Pd/SO x ). The prominent electrocatalytic activity and biocompatibility of Ti 3 C 2 T X /Pt–Pd enable the SO x to be highly active and sensitive to sarcosine. Under the optimized conditions, the prepared biosensor has a wide linear detection range to sarcosine from 1 to 1000 µM with a low limit of detection of 0.16 µM (S/N = 3) and a sensitivity of 84.1 µA/mM cm 2 . Besides, the reliable response in serum samples shows its potential in the early diagnosis of prostate cancer. More importantly, the successful construction and application of the amperometric biosensor based on Ti 3 C 2 T X /Pt–Pd will provide a meaningful reference for detecting other cancer biomarkers.
研究领域:
生物医学工程
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肿瘤学
·
电化学传感
✓ 已验证
DOI
PubMed
高影响因子
FlatChem
·
2024
·
IF 5.9
Siqi Gong,Jing Li,Fan Zhao,Mengdie Yan,Chenghao Huang,Guanzhong Huo,Chunli Li,Bing Wu,Jiapeng Liu
The emerging energy-saving and environmentally friendly capacitive deionization (CDI) technology has attracted more and more attention. However, it remains a great challenge to develop CDI electrode materials with excellent comprehensive properties. Herein, the porous N, P co-doping Ti 3 C 2 T x MXene (N, P-Ti 3 C 2 T x ) was prepared successfully by combining simple flocculation with an annealing process. Benefitting from the synergistic effect of the combination of porous structure and co-doping of N and P heteroatoms, the N, P-Ti 3 C 2 T x exhibits substantial specific surface area, which provides more surface bounding active sites for electrochemical reactions, thus assisting to boost the CDI performance. As a result, the N, P-Ti 3 C 2 T x exhibited an admirable salt (Na + ) adsorption capacity of 53.3 mg g −1 and exceptional recycling property. Impressively, the N, P-Ti 3 C 2 T x also exhibited superior desalination performance of Pb 2+ , characterized by an exceptionally high desalination capacity of up to 168.2 mg g −1 at 1.2 V, and the corresponding desalination rate reached 0.047 mg g −1 s −1 . Additionally, the deionization mechanism involved was elucidated through a series of characterizations. This work will furnish an effective avenue for the innovative design of MXene-based electrode materials toward high-performance CDI.
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 ALLOYS AND COMPOUNDS
·
2018
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IF 3.779
Heru Wang,Lu Li,Chuncheng Zhu,Shuangyan Lin,Jing Wen,Qi Jin,Xitian Zhang
To solve the restacking of the Ti 3 C 2 T x nanosheets and destroy of electrode microstructure during cycles and gain high-performance electrode for supercapacitors , Ti 3 C 2 T x /PDA composite film electrode was rationally designed and successfully synthesized by one-step in situ polymerization of dopamine on the surface of the Ti 3 C 2 T x nanosheets. The as-synthesized Ti 3 C 2 T x /PDA composite electrode achieved a superior areal capacitance of 715 mF/cm 2 at a scan rate of 2 mV/s and maintained 95.5% of initial capacitance after 10000 cycles, exhibiting long-term cycling stability. The areal capacitance can be enhanced to 3440 mF/cm 2 when the mass loading increases to 13.6 mg/cm 2 . The improved electrochemical performance and outstanding electrochemical stability can be attributed to the effective suppressing the restacking of Ti 3 C 2 T x sheets and increasing interlayer spacing by introducing PDA, which could be beneficial to expose more surface active sites, shorten the diffusion path of electrolyte ions, promote electron transport and fast Faradaic reaction. Our work opens new design space to develop the high performance negative electrode materials.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ChemNanoMat
·
2022
·Vol. 8
·期 8
·e202200113
·
IF 3.82
Minglong Xia,Mengjie Yang,Yuchao Guo,Xi Sun,Shuo Wang,Yi Feng,Huili Ding
Graphical The CoFe−P/Ti 3 C 2 T x nanosheets have been synthesized via reflux hydrothermal and phosphorization. The obtained CoFe−P/Ti 3 C 2 T x is an excellent OER catalyst, and its performance exceeds that of the noble metal catalyst RuO 2 . Oxygen evolution reaction (OER) is a crucial step in many sustainable energy technologies. Exploring cost-effetive electrocatalysts with high efficiency is one of the most critical but challenging problems to overcome the slow reaction rate and high overpotential in OER. Layered double hydroxide (LDH) has excellent OER performance. However, their poor electrical conductivity and easy agglomeration limit their use. Currently, further phosphorizaton or incorporating with conductive substrates is an effective method to improve the OER performance. In this study, a hybrid product denoted as CoFe−P/Ti 3 C 2 T x were successfully prepared by facile reflux hydrothermal and phosphorization. The optimized CoFe−P/Ti 3 C 2 T x possesses a low overpotential of 270 mV at a current density of 10 mA cm −2 and a small Tafel slope (57.7 mV dec −1 ). In addition, an overpotential of 337 mV was needed for affording 50 mA cm −2 in the 1 M KOH.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·Vol. 49
·期 7
·2889-2897
·
IF 2.5
Yanan Zhu,Yongchang Yang,Shiqiang Li,Chang Zhu,Zegang Qiu,Qianqian Zhu
The development of efficient materials for adsorption desulfurization has attracted much attention for the safety of humans and the ecosystem. Metal–organic frameworks have shown promise in removing organic sulfur compounds in liquid fuels, while another star material – MXene has rarely been applied in this field. In this study, Ti3C2Tx MXene/Cu-MOF composites with different MXene contents (3.3%, 6.7%, and 13.3%) were synthesized via an in situ precipitation method. Characterization showed that the Cu-MOF was successfully coated on the surface of Ti3C2Tx MXene and partially embedded between the MXene nanosheets, restraining the agglomeration of both MXene and the Cu-MOF. The optimal composite-3.3%MXene/Cu-MOF presented the largest surface area of 166.6 m2 g−1. Compared to MXene and Cu-MOF, 3.3%MXene/Cu-MOF exhibited an enhanced adsorption performance for methyl phenyl sulfide in the model fuel with an equilibrium adsorption capacity of 87.4 mg g−1. Furthermore, the effects of adsorption parameters, adsorption kinetics, adsorption isotherms, and the adsorption mechanism, and regenerative performance of 3.3%MXene/Cu-MOF were comprehensively discussed. A pseudo-second order kinetic model and the Langmuir adsorption isotherm were found to better explicate the adsorption behavior on 3.3%MXene/Cu-MOF, which exhibited a theoretical maximum adsorption capacity of 183.9 mg g−1. This work hopes to shed light on the material design for adsorption desulfurization.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2022
·
IF 8.431
Dan Zhou,Mengmeng Liang,Xingyue Bao,Tiezhu Sun,Yi Huang
Soil colloid is a nonnegligible factor when evaluating the environmental risk of engineered nanoparticles (ENPs) in the groundwater. In this study, the environmental fate of an emerging ENP (Ti 3 C 2 T x MXene) in the groundwater was investigated for the first time, which currently poses a severe environmental risk due to its cytotoxicity but has received little attention. The colloidal dispersion stability and degradation kinetics of Ti 3 C 2 T x MXene in the groundwater were evaluated by considering the effects of soil colloids prepared from sodium humate (SH), montmorillonite (MT), and a natural soil (NS) under variable solution chemistry. The results showed that the affinity of soil colloids with Ti 3 C 2 T x followed an SH > MT > NS sequence. Increasing SH concentration led to Ti 3 C 2 T x disaggregation by enhancing the electrical and steric repulsive forces, while MT and NS resulted in hetero-aggregation because of the elevated collision frequency. SH and MT enhanced the critical coagulation concentrations of Ti 3 C 2 T x by 100 and 10 folders, respectively, via surface coating process, while NS slightly reduced due to the bridging effects induced by the soluble cations. The soil colloids promoted Ti 3 C 2 T x degradation compared with their absence and in an SH > MT ≫ NS sequence. SH and MT were through forming Ti–O–C and Si–O–Ti bonds with Ti 3 C 2 T x via their carboxyl and hydroxyl groups, respectively, rendering the Ti 3 C 2 T x surface more reactive and faster degradation. NS showed a weak promotion effect because of its less affinity with Ti 3 C 2 T x and limited organic matter and clay contents with hydroxyl and carboxyl groups . This study demonstrated the unstable environmental behaviors of Ti 3 C 2 T x in the groundwater and mitigated its environmental risk concerns.
研究领域:
环境科学
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhaorui Zhang,Jiahao Liu,Haiying Du,Xufei Zhao,Haoming Sun,Minghui Yang,Jinkui Chu
A surface functional group modulation method was used to regulate the NO 2 sensing performance of the Ti 3 C 2 T x sensor. The monolayer Ti 3 C 2 T x MXene was synthesized from Ti 3 AlC 2 (MAX phase) by hydrofluoric acid (HF) etching. Ar/O 2 hybrid plasma treatment was used to regulate the ratio of hydroxyl and fluorine functional groups (OH/ F) in the Ti 3 C 2 T x surface structure. Room-temperature (RH) NO 2 sensor based on modified Ti 3 C 2 T x was fabricated by the dip coating method. The modified Ti 3 C 2 T x sensor has a higher gas response (45.31 %) to 50 ppm NO 2 compared with the untreated Ti 3 C 2 T x sensor which shows more excellent sensitivity and linearity with the NO 2 concentration of 5–50 ppm. It is due to that the presence of the hydroxyl potential on the Ti 3 C 2 T x surface well amplifies the electronic surface activity of Ti 3 C 2 T x . Concurrently, the modified electronic structure augments the adsorption propensity of Ti 3 C 2 T x for O 2 (2.26 |eV|) and NO 2 (3.24 |eV|), thereby improving the NO 2 sensing capability of the Ti 3 C 2 T x sensor. These results demonstrate that Ti 3 C 2 T x with a high ratio of OH/ F functional groups has great potential in developing high-performance room temperature NO 2 sensors.
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
Results in Physics
·
2019
·
IF 3.042
Dongyong Shan,Jun He,Lianwen Deng,Shuoqing Yan,Heng Luo,Shengxiang Huang,Yunchao Xu
Incorporation of magnetic loss component is more favorable to high-performance microwave absorbing materials. In this paper, the NiFe 2 O 4 -decorated Ti 3 C 2 T x MXene composites were synthesized by the in-situ chemical co-precipitation method. The magnetic NiFe 2 O 4 nanoparticles were attached on the surfaces or inserted into the interlayers of Ti 3 C 2 T x MXene. Interestingly, we reduced effectively complex permittivity and enhanced magnetic loss by increasing the NiFe 2 O 4 content on Ti 3 C 2 T x MXene. Stronger electromagnetic attenuation ability and preferable impedance matching property were achieved and considered to be responsible mainly for improving absorbing peaks as well as bandwidth of the NiFe 2 O 4 -Ti 3 C 2 T x MXene composite. In particular, the NiFe 2 O 4 -Ti 3 C 2 T x -20 sample exhibited an optimal effective absorption bandwidth ( RL < −10 dB) of 7.68 GHz with the material thickness of only 1.5 mm. These findings are believed to pave the way of further promoting microwave absorption performance of Ti 3 C 2 T x MXene from magnetic functionalized decoration of view.
研究领域:
材料科学
·
电磁学
✓ 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）