ADVANCED FUNCTIONAL MATERIALS
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2023
·Vol. 33
·期 37
·2302188
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IF 19
Chuqiao Hu,Zhongming Wei,La Li,Guozhen Shen
The excellent electronic and electrochemical properties make 2D MXenes suitable candidates for sensors, batteries, and supercapacitors. However, the metallic-like behavior of MXenes hinders their potential for optoelectronic devices such as photodetectors. In this study, the band gap of metalloid Ti 3 C 2 T x MXene is successfully opened to 1.53 eV with phenylsulfonic acid groups and realized a transistor and high-performance near-infrared photodetector array for a flexible vision sensory-neuromorphic system. The phenylsulfonic acid groups modified Ti 3 C 2 T x MXene (S-Ti 3 C 2 T x )-based flexible photodetector has a maximum responsivity of 8.50×10 2 A W −1 and a detectivity of 3.69×10 11 Jones under 1064 nm laser irradiation. Moreover, the fabricated flexible vision sensory-neuromorphic system for image recognition realizes a high recognition rate >0.99, leading to great potential in the field of biological visual simulation and biomimetic eye. Besides conventional devices with Au as the conductive electrodes, all Ti 3 C 2 T x MXene-based devices are also fabricated with S-Ti 3 C 2 T x as the photosensitive material and unmodified Ti 3 C 2 T x as the conductive electrodes, exhibiting comparable optoelectronic performances.
研究领域:
材料科学
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电子工程
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生物模拟
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Yun Tian,Luowen Xu,Shuo Ning,Changfu Wang,Yun Wang,Hao Jiang,Dingzhong Yuan,Fengtao Yu,Yan Liu
Photocatalysis has emerged as a extremely promising green technology for the treatment of uranium-containing wastewater. This study focuses on the fabrication of Ti 3 C 2 T x /Cd 0.8 Zn 0.2 S composites with Schottky junctions through the in-situ growth of Cd 0.8 Zn 0.2 S on Ti 3 C 2 T x nanosheets, enabling efficient photoreduction of U(VI) without the requirement of sacrificial agents. The results demonstrate that the Ti 3 C 2 T x /Cd 0.8 Zn 0.2 S composites achieve remarkable 99.48 % U(VI) reduction efficiency within 60 min in a 100 ppm uranium solution. Furthermore, the removal rate remains above 90 % after five cycles. The formation of Schottky heterojunctions by Ti 3 C 2 T x and Cd 0.8 Zn 0.2 S leads to the generation of an internal electric field that significantly promotes the rapid separation and transfer of photogenerated carriers, thereby enhancing the photocatalytic reduction efficiency of Ti 3 C 2 T x /Cd 0.8 Zn 0.2 S-3:100 (TC/CZS-3:100). A considerable amount of electrons accumulate on Ti 3 C 2 T x via the Schottky barrier, effectively facilitating the reduction of U(VI) to U(IV). As a co-catalyst, Ti 3 C 2 T x enhances the photocatalytic performance and stability of Cd 0.8 Zn 0.2 S. Moreover, the practical application in the waste liquid of rare earth tailings reveals that the removal rate can be as high as 91.24 %. This research is of significant value in the development of effective photocatalysts for the elimination of uranium from wastewater.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Huying Yan,Yang Guo,Xingzhi Bai,Jiawei Qi,Haipeng Lu
Optimizing and enhancing the performance of electromagnetic wave (EMW) absorption materials relies on the modification of their composition and structure through heterogeneous interface engineering. Ti 3 C 2 T x ’s high conductivity results in an impedance mismatch, which hinders efficient EMW absorption. Herein, a one–step catalytic chemical vapor deposition (CCVD) method is used to construct the Ti 3 C 2 T x /TiO 2 @C heterogeneous structure. Upon annealing at 500 °C, amorphous carbon is uniformly deposited on the Ti 3 C 2 T x surface, thereby incorporating the scale–like TiO 2 generated during the process. The inclusion of the amorphous carbon layer and TiO 2 reduces the substrate’s conductivity, achieving optimized impedance matching. Additionally, building heterogeneous interfaces between Ti 3 C 2 T x , TiO 2 , and C enriches multiple loss mechanisms involving dipole and interfacial polarization, ultimately enabling optimal EMW absorption performance. The minimum reflection loss ( RL min ) value of Ti 3 C 2 T x /TiO 2 @C–500 is –53.12 dB when its thickness and frequency are 1.15 mm and 13.80 GHz, respectively. Moreover, thermal infrared imaging confirms that coatings fabricated using Ti 3 C 2 T x /TiO 2 @C–500 demonstrate a favorable heat dissipation rate, validating its effectiveness in addressing the challenge of efficient heat dissipation in electronic devices. This study significantly contributes to the progress of two–dimensional (2D) materials, enabling high–performance EMW absorption and expanding their applications in complex scenarios.
研究领域:
材料科学
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电子工程
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
·
IF 8.3
Xiangjun Liu,Jingjing Ma,Shuai Zhang,Guo-Wei Guan,Qing-Yuan Yang,Junqi Wang
Harvesting solar energy to drive highly efficient photocatalytic conversion of renewable biomass to value-added chemicals and H 2, is a green and promising strategy to acquire clean H 2 with high energy density. In this study, CdS nanoparticles/Ti 3 C 2 T x nanosheets (Ti 3 C 2 T x /CdS composites) photocatalysts were prepared by a hydrothermal strategy. With an optimized Ti 3 C 2 T x loading of 0.8 wt%, the Ti 3 C 2 T x /CdS composites exhibited a significant enhancement in the photocatalytic H 2 evolution reaction with long-term stability, reaching 20,427 μmol·g −1 ·h −1 , compared to the pristine CdS (1,999 μmol·g −1 ·h −1 ). The Ti 3 C 2 T x /CdS-0.8 reflects appropriate electronic band structure and excellent conductivity, resulting in efficiently generation and migration of photoinduced electrons. In addition, the apparent quantum yield of Ti 3 C 2 T x /CdS-0.8 was 9.4% at 420 nm, higher than that of pristine CdS (1.2%). Superior results (7,164 μmol·h −1 ·g −1 ) were also achieved in the conversion of raw biomass to H 2 under natural sunlight. Achieving solar-driven H 2 production from biomass represents a significant step forward in contributing to sustainable and clean energy practices.
研究领域:
材料科学
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能源化学
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环境科学
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DOI
高影响因子
CERAMICS INTERNATIONAL
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2020
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IF 3.83
Wei Wan,Meizhen Tao,Hailin Cao,Yuqing Zhao,Junrong Luo,Jian Yang,Tai Qiu
Exploring flexible dielectrics with high dielectric constant and low loss is pertinent for many applications in electronic devices. In the present work, a non-ferroelectric polymer, polyvinyl alcohol (PVA), was used to fabricate homogeneous dielectric composite films with a relatively high dielectric constant and a low dielectric loss by using 2D nano sheets (Ti 3 C 2 T x MXene) as the filler. To limit dielectric loss, SiO 2 was coated onto the surface of MXene to provide interfacial barrier effect and suppress dielectric loss. MXene@SiO 2 /PVA composite films showed lower dielectric losses at low frequencies (from 20 Hz to ~ 10 kHz) compared with MXene/PVA composite films. MXene@SiO 2 /PVA composite films with 2.5 wt% MXene loading and 5 wt% (with respect to MXene content) SiO 2 coating had a dielectric constant of 27.2 (a 292.5% rise compared to neat PVA film) and a dielectric loss of only 0.057 (a 259.6% reduction compared to MXene/PVA composite film) at 100 Hz and room temperature (RT). In addition, this SiO 2 -coated composite film had stable dielectric properties (dielectric constant and loss change from 27.2 to 29.3 and 0.057 to 0.104, respectively) in the temperature range of RT to 60 °C. This work provides a promising way to fabricate PVA-based dielectric composites with excellent dielectric properties for practical applications in electronics.
研究领域:
材料科学
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电子工程
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DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2022
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IF 9.463
Renjie Ding,Haowen Zheng,Xu Zhao,Fuhua Xue,Pengyang Li,Jinhua Xiong,Zhong Chen,Zonglin Liu,Qingyu Peng,Xiaodong He
The excellent chemical, mechanical or physical functionalities of two-dimensional nanomaterials can be better performed by assembling two-dimensional nanosheets into crumpled structures. Herein, inspired by the wrinkles on human skin, we demonstrated a simple method to create out-of-plane crumpled surface morphology based on the expanding-shrinking process of tissue. The unique crumpled structure largely raises the fracture strain of Ti 3 C 2 T x MXene/Tissue composite film , which reaches 30.48%, while the tensile strength also shows an increasement to 28.63 MPa. The EMI shielding performance improved by the internal scattering achieves 77.0 dB. With vertically aligned Ti 3 C 2 T x nanosheets formed by the crumples, the through-plane thermal conductivity reached 1.12 W m −1 K −1 is obtained. Moreover, the enhanced photothermal conversion performance caused by the large specific surface area improves the solar-driven water evaporation rate to 1.85 kg m -2 h −1 . This work exhibits a novel method for fabricating multifunctional crumpled Ti 3 C 2 T x MXene composite film.
研究领域:
材料科学
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纳米技术
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能源与环境
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DOI
高影响因子
Nanomaterials
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2024
·Vol. 15
·期 1
·6
·
IF 4.4
Chuanxin Weng,Junzhe He,Jiangxiao Tian,Wei Wu,Jinjin Li,Jiulin Zhang,Haitao Yu,Xuechuan Zhang,Mingming Lu
The disordered assembly and low conductivity of carbon nanotubes are the main problems that limit the application of electromagnetic interference (EMI) shielding. In this work, an ordered lamellar assembly structure of multiwalled carbon nanotube/Ti3C2Tx(MWCNT/Ti3C2Tx) hybrid films was achieved by vacuum-assisted filtration through the hybridization of Ti3C2Txnanosheets and carbon nanotubes, where carbon nanotubes were tightly sticking on the surface of Ti3C2Txnanosheets via physical adsorption and hydrogen bonding. Compared with the pure carbon nanotubes films, the hybrid MWCNT/Ti3C2Txfilms achieved a significant improvement in conductivity of 452.5 S/cm and EMI shielding effectiveness (SE) of 44.3 dB under 50 wt% Ti3C2Txwith a low thickness (8.6 μm) and orderly lamellar stacking structure, which finally resulted in high specific SE (SSE/t, SE divided by the density and thickness) of 55,603.1 dB∙cm2∙g−1.
研究领域:
材料科学
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纳米技术
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DOI
PubMed
高影响因子
ACS Applied Nano Materials
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2020
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IF 0
Ling Jin,Chenglong Wu,Kang Wei,Lifang He,Hong Gao,Hexin Zhang,Kui Zhang,Abdullah M. Asiri,Khalid A. Alamry,Lei Yang,Xiangfeng Chu
A series of polymeric titanium carbide (Ti3C2Tx) MXene composites were prepared by in situ polymerization of 3,4-ethylenedioxythiophene (EDOT) and poly(4-styrenesulfonate) (PSS) on Ti3C2Tx MXene materials. The resulting PEDOT:PSS/MXene composites were fabricated into a gas sensor using a dip coating technique. The composite sensor was able to measure ammonia (NH3) at room temperature and showed a strong gas response of 36.6% against 100 ppm of NH3 with the response and recovery time of 116 and 40 s, respectively. In addition, the composite sensor exhibited enhanced sensing performance compared to both pure PEDOT:PSS- and Ti3C2Tx MXene-based sensors, demonstrating a synergistic effect between PEDOT:PSS polymers and Ti3C2Tx MXene 2D materials. These data suggested the great potential of using PEDOT:PSS/MXene composite sensors for room temperature detection of NH3.
研究领域:
材料科学
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传感器技术
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化学工程
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DOI
JOURNAL OF MEMBRANE SCIENCE
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2024
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IF 8.4
Haiyu Luo,Junzhi Li,Lili Tang,Yanan Li,Nan Xu,Wenlan Ji,Pei Nian,Shihao Zhang,Yibin Wei
Photocatalytic technology with high oxidative activity has been considered promising for eliminating fouling of nanofiltration (NF) membranes when used in organic pollutant removal. Herein, we report a photocatalytic self-cleaning NF membrane composed by two dimensional Ti 3 C 2 T x MXene and NaTaO 3 nanoparticles with excellent permeability and antibiotics removal efficiency. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) were used to verify the successful preparation of the photocatalytic self-cleaning membrane. The membrane with the NaTaO 3 nanoparticles loading of 8 mg (NM-8) exhibited excellent rejection (>99.67%) and water permeability (90.79–112.50 L m −2 h −1 ·bar −1 ) for tetracycline hydrochloride (TC), ciprofloxacin (CIP), methylene blue (MB), and 2-mercaptobenzothiazole (MBT). The removal efficiencies of the membrane for TC, CIP, MB, and MBT during the photocatalytic degradation process were 75.18%, 70.13%, 90.04% and 93.12%, respectively. Moreover, the chemical and optical properties were investigated by zeta potential, water contact angle, and UV–vis spectrum. The mechanism of photodegradation of pollutants by the prepared NaTaO 3 @Ti 3 C 2 T x MXene membranes was further elucidated. This work not only deepens the construction of photocatalytic NF membranes using two dimensional materials, but also provides a new strategy for the efficient removal of antibiotics from wastewater.
研究领域:
环境科学
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材料科学
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污染控制
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DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2025
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IF 3.5
Yinghao Lv,Jiaqi He,Yajie Yang,Meilin Huang,Dawei He,Yongsheng Wang
Supercapacitors are gaining traction in the energy storage sector due to their high power and energy density. MnO 2 is identified as a promising supercapacitors electrode material due to its reversible Faraday reaction and great theoretical specific capacitance. However, its practical performance is hindered by poor electrical conductivity and structural instability. By incorporating Ti 3 C 2 T x , a 2D MXene material known for its high conductivity and functional groups, the electrochemical behavior of the MnO 2 composite is expected to be enhanced. This study introduces a novel method for synthesizing MnO 2 @Ti 3 C 2 T x self-assembled electrodes (1, 3, 6, 9-MnO 2 @Ti 3 C 2 T x composite electrodes) via a simple solution immersion technique at room temperature and ambient pressure. The state of manganese dioxide deposition can be influenced by varying the number of operations of the solution immersion technique. Among them, 6-MnO 2 @Ti 3 C 2 T x has the largest specific surface area and achieves the best specific capacitance of 324.1 F g −1 . When the current density is increased to 10 A g −1 , the specific capacitance retention of 6-MnO 2 @Ti 3 C 2 T x is 67.11 %. Furthermore, the 6-MnO 2 @Ti 3 C 2 T x //Ti 3 C 2 T x asymmetric capacitor demonstrated a maximum energy density of 30.8 W h kg −1 and a power density of 7493.3 W kg −1 , maintaining a capacitance retention rate of 95.98 % (from 74.6 to 71.6F g −1 ) after 2000 charge-discharge cycles. This study presents an effective and scalable synthesis strategy for MnO 2 composite electrodes, highlighting their potential for future energy storage applications.
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
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IF 8.9
Zhi Wan,Peilin Zuo,Zhiyuan Chen,Jizhou Yang,Mingxin Ren,Zhenghang Tian,Gangfeng Li,Peng Hu,Feng Teng,Haibo Fan
Ti 3 C 2 T x MXenes have emerged as promising candidates for energy storage applications due to their two-dimensional structure, metallic conductivity, tunable surface functionalities, and intrinsic pseudocapacitive charge storage. This study explores the hydrothermal synthesis of GaOOH/Ti 3 C 2 T x composites using gallium nitrate as the gallium precursor. The incorporation of GaOOH not only expands the interlayer spacing of Ti 3 C 2 T x , facilitating more efficient electrolyte ion migration, but also enhances the material's energy storage capacity by introducing additional active sites and augmenting pseudocapacitance. As an electrode material in supercapacitors, GaOOH/Ti 3 C 2 T x composites, prepared with a 0.06 M gallium source concentration, achieve a remarkable specific capacitance of 542.1 F·g −1 , surpassing that of pristine Ti 3 C 2 T x (305 F·g −1 ), with a minimal degradation of only 3.4 % after 5000 charge-discharge cycles. This research offers valuable insights into the electrochemical behavior of GaOOH/Ti 3 C 2 T x composites and highlights the role of GaOOH in enhancing the performance of these materials. The results underscore the potential of combining metal hydroxides with MXenes for advanced supercapacitor applications.
研究领域:
材料科学
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能源存储
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电化学
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Chong Li,Ran Tao,Jianlei Zhang,Jinlong Chen,Chen Fu,Jikai Zhang,Huiling Ong,Chenze Lu,Yi Chen,Qiang Wu,Jing-Ting Luo,Yongqing Fu
Along with the revolution of the Internet of Things (IoT), smart, flexible, easily fabricated, and highly sensitive gas sensors are essential for many portable electronics. In this study, a wearable NO2 sensor based on a nanomesh structure woven with Ti3C2Tx microflakes and Bi2S3 nanobelts operated at room temperature was successfully designed and prepared. The effects of the mass ratio between two materials on the performance were evaluated. Bi2S3 nanobelts embedded inside accordion-like Ti3C2Tx provide large specific surface areas and abundant active sites for the adsorption of NO2 molecules. Attributed to the high conductivity of Ti3C2Tx, the carriers generated in the sensitive layers are easily transmitted during sensing, thus significantly reducing the response and recovery times. The sensor based on the nanomesh containing 30 wt % Ti3C2Tx exhibits excellent sensing performance, fast response/recovery rates, and high stability even in arbitrary deformed shape conditions. Upon exposure to 1 ppm NO2, the response of the sensor is 12.67, and the response/recovery times are 5/28 s, respectively. A stable sensing performance can be maintained after 1500 cycles of deformation. This work demonstrates a simple but reliable manufacturing strategy of wearable gas sensors for the next generation of IoT monitoring network-linking human activities.
研究领域:
材料科学
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传感器技术
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物联网应用
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DOI
高影响因子
危险品化学品经营许可证（带存储）