Advanced Materials Technologies
·
2022
·Vol. 7
·期 7
·2101639
·
IF 8.856
Chuqiao Hu,Hao Chen,La Li,Hui Huang,Guozhen Shen
The enriched surface functional group such as OH termination and unique 2D structure of Ti 3 C 2 T x MXene provide the feasibility to form hydrogen bonds with organic photosensitive materials as van der Waals heterostructures, thus can realize the improved photoresponsivity of near infrared (NIR) photodetectors (PDs). In this work, an organic–inorganic van der Waals heterostructure-based NIR PD array is designed using Ti 3 C 2 T x MXene as conductive electrodes and RAN film as active materials (Ti 3 C 2 T x -RAN PDs). The on-off ratio of the fabricated devices shows 6.25 times higher than that of PDs using thermal evaporated Au electrode (Au-RAN PDs) under 1064 nm laser excitations. The fabricated Ti 3 C 2 T x -RAN NIR PDs also possess outstanding mechanical stability with no obvious photoresponse degradation under different bending states and high transparency with a transmittance above 70% in the visible region. Owing to the high performance of the Ti 3 C 2 T x -RAN PDs, a 1024-pixel (32 × 32) image sensor array is fabricated to achieve delicate, vivid, and higher resolution imaging of a “deer,” opening up a new avenue for the biomimetic vision and flexible wearable accurate image sensing.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 37
·2302188
·
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.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Ningmin Duan,Zhenyu Shi,Jilai Wang,Chengpeng Zhang,Jianren Xi,Xiaotao Yang,Guilong Wang
The development of flexible electronics has placed higher demands on electromagnetic interference (EMI) shielding materials, especially in terms of mechanical properties. Herein, a novel composite with excellent mechanical and EMI shielding properties was developed. The electrohydrodynamic atomization deposition approach was used to deposit Ti 3 C 2 T x MXene and graphene oxide (GO) nanosheets on carbon fiber fabric (CFf) surface, then they were assembled layer by layer with thermoplastic polyurethane (TPU) and thermoformed at high temperature to obtain MG/f-CFf/TPU composite. When the MXene/GO content increases, the mechanical performance of the composite is improved, mainly owing to the formation of chemical bonds and the presence of mechanical interlocking and van der Waals forces . Specifically, the tensile strength and interlaminar shear strength of the composite reach 140.98 MPa and 54.67 MPa, increasing by 72.45 % and 52.92 %, respectively. Benefitting from the unique lamellar structure , the maximum EMI-SE of MG/f-CFf/TPU composite is 38.29 dB. Besides, the MG/f-CFf/TPU composite also displays outstanding EMI-SE stability after 3000 times folding cycles. The flexible MG/f-CFf/TPU composite may provide more guidelines for the design of next-generation flexible EMI shielding materials.
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高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Yaru Hou,Fanyong Yan,Xinyi Bai,Xin Wei,Liang Chen,Yang Fu
Ti 3 C 2 T x MXene has demonstrated well-established sensitivity in electrochemical sensing but is susceptible to oxidation . Nitrogen-sulfur doped carbon dots (N, S-CDs) were functionalized on Ti 3 C 2 T x MXene nanosheets via a surface modification strategy, leading to significant enhancement in the performance of Ti 3 C 2 T x MXene. The incorporation of N, S-CDs into Ti 3 C 2 T x MXene nanosheets effectively prevents the aggregation of Ti 3 C 2 T x MXene flakes, resulting in improvement of the interlayer spacing to 1.578 nm and a threefold expansion of the specific surface area. Furthermore, the N, S-CDs contribute to increase the effective active surface area of the Ti 3 C 2 T x MXene electrode, facilitating accelerated the electron transfer rates and providing additional active sites. On this basis, a galvanic sensor for dopamine (DA) detection was attained through loading N, S-CDs/Ti 3 C 2 T x on glassy carbon electrodes. The optimized sensor achieved a linear detection range of 1 μM–1000 μM for DA, with a detection limit of 0.91 μM (S/N = 3). This work presents a promising approach for the utilization of chemically stable Ti 3 C 2 T x MXene and MXene-based sensors, offering a new avenue for quantitative detection of DA that holds potential for application in real sample analysis.
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Nano-Micro Letters
·
2021
·Vol. 13
·期 1
·1-11
·
IF 16.419
Li La,Liu Weijia,Jiang Kai,Chen Di,Qu Fengyu,Shen Guozhen
Flexible Zn-ion hybrid micro-supercapacitors (MSCs) array was fabricated with Ti 3 C 2 T x as the cathode via laser direct writing method, which present ultrastability up to 50,000 cycles after in-situ annealed treatment.
A digital timer driven by the obtained single MSC under bending state, together with a flexible LED displayer of the “TiC” logo lighted by the MSC arrays under twisting, crimping and winding conditions demonstrate the great potential application of the MSCs in integrated wearable electronics.
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PubMed
高影响因子
ACS Nano
·
2021
·
IF 15.881
Hongchen Wang,Ruicong Zhou,Donghai Li,Linrong Zhang,Guozhang Ren,Li Wang,Jinhua Liu,Deyang Wang,Zhenhua Tang,Gang Lu,Gengzhi Sun,Hai-Dong Yu,Wei Huang
The flexible strain sensor is of significant importance in wearable electronics, since it can help monitor the physical signals from the human body. Among various strain sensors, the foam-shaped ones have received widespread attention owing to their light weight and gas permeability. However, the working range of these sensors is still not large enough, and the sensitivity needs to be further improved. In this work, we develop a high-performance foam-shaped strain sensor composed of Ti3C2Tx MXene, multiwalled carbon nanotubes (MWCNTs), and thermoplastic polyurethane (TPU). MXene sheets are adsorbed on the surface of a composite foam of MWCNTs and TPU (referred to as TPU/MWCNTs foam), which is prefabricated by using a salt-templating method. The obtained TPU/MWCNTs@MXene foam works effectively as a lightweight, easily processable, and sensitive strain sensor. The TPU/MWCNTs@MXene device can deliver a wide working strain range of ∼100% and an outstanding sensitivity as high as 363 simultaneously, superior to the state-of-the-art foam-shaped strain sensors. Moreover, the composite foam shows an excellent gas permeability and suitable elastic modulus close to those of skin, indicating its being highly comfortable as a wearable sensor. Owing to these advantages, the sensor works effectively in detecting both subtle and large human movements, such as joint motion, finger motion, and vocal cord vibration. In addition, the sensor can be used for gesture recognition, demonstrating its perspective in human—machine interaction. Because of the high sensitivity, wide working range, gas permeability, and suitable modulus, our foam-shaped composite strain sensor may have great potential in the field of flexible and wearable electronics in the near future.
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PubMed
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2021
·Vol. 44
·期 18
·3398-3406
·
IF 3.645
Tiantian Pang,Xiaohui Chen,Kai Hu,Yongxia Cui,Wenjie Zhao,Huahui Zeng,Zhenqiang Zhang,Shusheng Zhang
In this study, a new Ti 3 C 2 T x -coated fiber was synthesized and utilized as coatings for solid-phase microextraction of seven polychlorinated biphenyls. The as-produced multilayered Ti 3 C 2 T x MXene was characterized by X-ray diffractometer, thermos-gravimetric analysis, scanning electron microscopy, and energy dispersive spectroscopy. It is noteworthy that the Ti 3 C 2 T x showed some attractive features including unique 2D layered structures, large surface area, good hydrophilicity, and rich active recognition sites, endowing it has a high affinity towards the target polychlorinated biphenyls. Subsequently, the affecting parameters on the extraction efficiency of polychlorinated biphenyls were optimized. Under the optimal conditions, a novel method for the analysis of polychlorinated biphenyls in water samples was proposed. The Ti 3 C 2 T x -coated fiber-based solid-phase microextraction method showed good linearity ( r 2 > 0.9928), high enrichment factors (268–442), low limits of detection (0.06–0.15 ng/L), and satisfactory repeatability (RSDs < 7.5%) for the polychlorinated biphenyls. The excellent method recoveries were in the range of 90.0–98.4, 92.0–98.2, and 92.0–98.0% for river water, lake water, and tap water samples, respectively. These results suggested that the proposed Ti 3 C 2 T x -coated fiber-based method represents a promising alternative for the analysis of polychlorinated biphenyls.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Ying He,Xitong Zhou,Liya Zhou,Xiaoning Zhang,Li Ma,Yanjun Jiang,Jing Gao
Prussian blue (PB)–Ti3C2Tx hybrid composites (PB@Ti3C2Tx) with peroxidase-like activity were prepared via a mild and green approach, in which Ti3C2Tx acted as a reducing agent, and the multilayer 2D nanostructure could effectively keep the PB nanoparticles away from aggregation. We fabricated a facile colorimetric biosensor for H2O2 detection to demonstrate the peroxidase-like activity of PB@Ti3C2Tx, and the results indicated favorable linearity of H2O2. The KMapp value of PB@Ti3C2Tx for TMB and H2O2 was 0.0134 mM and 0.162 mM, respectively, which was better than that of horseradish peroxidase (HRP). Moreover, we also fabricated a biosensor by immobilizing acetylcholinesterase (AChE) on the PB@Ti3C2Tx-modified electrode. PB@Ti3C2Tx not only has good biocompatibility for AChE but also can obtain a detectable signal at lower applied potential (from 0.73 to 0.2 V). A good linearity of malathion was obtained in the range from 1.0 × 10–15 to 1.0 × 10–9 M with a detection limit of 1.3 × 10–16 M.
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高影响因子
ACS Nano
·
2021
·
IF 15.881
Kuo Yang,Kai Zhu,Yuanzhe Wang,Ziting Qian,Yizhi Zhang,Zhaoyan Yang,Zhuyuan Wang,Lei Wu,Shenfei Zong,Yiping Cui
Gas sensors lie at the heart of various fields ranging from medical to environmental sciences, and the demand of gas sensors is instantly expanding. However, in the face of complex gas samples, how to maintain high sensitivity while performing multiplex detection still puzzles the researchers. Here, by introducing Ti3C2Tx MXene into a microfluidic gas sensor with a three-dimensional (3D) transferable SERS substrate, a powerful gas sensor having both multiplex detecting ability and high sensitivity is demonstrated. The employ of MXene endows the sensor with a universal high adsorption efficiency for various gases while the generation of in situ gas vortices in the sophisticated nanomicro structure extends the molecule residence time in SERS-active area, both leading to the increased sensitivity. In the proof-of-concept experiment, a limit of detection (LOD) of 10–50 ppb was achieved for three typical volatile organic compounds (VOCs) according to the intrinsic SERS signals of gas molecules. Besides, the well-designed periodic 3D structure solves the general repeatability problem of SERS substrates. In addition, the detailed composition of gas mixture was revealed using classic least-square analysis (CLS) with an average accuracy of 90.6%. Further, a chromatic barcode was developed based on the results of CLS to read out the complex composition of samples visually.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Liu-Xin Liu,Wei Chen,Hao-Bin Zhang,Yu Zhang,Pingping Tang,Danyang Li,Zhiming Deng,Lvxuan Ye,Zhong-Zhen Yu
Although transition metal carbide (MXene) fibers are highly electrically conductive, the poor spinnability of neat MXene dispersion and the brittleness of the conductive fibers limit their applications. Herein, a coaxial wet spinning assembly strategy is adopted to fabricate mechanically strong and electrically conductive Ti 3 C 2 T x MXene-based core–shell fibers with regenerated cellulose (RC) as the tough component and graphene oxide/MXene (GM) as the conductive components. By an optimal structure design, the hollow RC@GM 90 fiber with the RC shell exhibits an increased strength of 134.7 MPa, a high toughness of 14.1 MJ m −3 , a large elongation at break of 13%, and a high conductivity of 2.37×10 3 S m −1 . By sewing on a textile substrate, the hollow RC@MXene fibers with a high conductivity of 3.68×10 4 S m −1 provide an extraordinary electromagnetic interference shielding efficiency of over 90 dB and outstanding solar-thermal energy conversion performances. Similarly, by improving spinnability of the MXene spinning dope with an aqueous dispersion of GO, solid core–shell GM@RC fibers with conductive GM shells are fabricated by the coaxial spinning, and the chemically reduced GM@RC fibers exhibit a high conductivity of 9.90×10 4 S m −1 and excellent electro-thermal energy conversion performances.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Mingxue Shi,Liguo Jin,Chaofeng Wang,Congyang Mao,Xiangmei Liu,Zhaoyang Li,Shengli Zhu,Hui Jiang,Zhenduo Cui,Yufeng Zheng,Shuilin Wu
Compared to phototherapy, microwave therapy has emerged as a promising approach for the treatment of deeply tissue-infected osteomyelitis owing to deep penetration ability, precise positioning heating, low damage to normal tissue. However, it is still significant to design materials with efficient microwave thermal conversion. In this paper, capacitor-like structure Ti 3 C 2 T x MXene/CNT is prepared to achieve high microwave thermal conversion efficiencies for safe and efficient microwave therapy through mechanisms associated with polarization and induced electric fields. Ti 3 C 2 T x MXene/CNT have been shown to achieve significant microwave thermal effects at varying thicknesses of tissue barrier and can rapidly increase the temperature in a short period of time, effectively causing 98.80% eradication of Staphylococcus aureus and 99.24% eradication of Escherichia coli within 20 min. Combined with remarkable antimicrobial effect and acceptable biocompatibility, this may provide reference for the safe and effective microwave therapy strategies to treat osteomyelitis.
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Energy & Environmental Materials
·
2024
·Vol. 7
·期 6
·e12756
·
IF 13
Zhongming Chen,Zhijian Du,La Li,Kai Jiang,Di Chen,Guozhen Shen
Thermally chargeable supercapacitors can collect low-grade heat generated by the human body and convert it into electricity as a power supply unit for wearable electronics. However, the low Seebeck coefficient and heat-to-electricity conversion efficiency hinder further application. In this paper, we designed a high-performance thermally chargeable supercapacitor device composed of ZnMn 2 O 4 @Ti 3 C 2 T x MXene composites (ZMO@Ti 3 C 2 T x MXene) electrode and UIO-66 metal–organic framework doped multichannel polyvinylidene fluoridehexafluoro-propylene ionogel electrolyte, which realized the thermoelectric conversion and electrical energy storage at the same time. This thermally chargeable supercapacitor device exhibited a high Seebeck coefficient of 55.4 mV K −1 , thermal voltage of 243 mV, and outstanding heat-to-electricity conversion efficiency of up to 6.48% at the temperature difference of 4.4 K. In addition, this device showed excellent charge–discharge cycling stability at high-temperature differences (3 K) and low-temperature differences (1 K), respectively. Connecting two thermally chargeable supercapacitor units in series, the generated output voltage of 500 mV further confirmed the stability of devices. When a single device was worn on the arm, a thermal voltage of 208.3 mV was obtained indicating the possibility of application in wearable electronics.
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