MATERIALS & DESIGN
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2020
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IF 6.289
Xianhong Zheng,Wenqi Nie,Qiaole Hu,Xuewei Wang,Zongqian Wang,Lihua Zou,Xinghua Hong,Haiwei Yang,Jiakun Shen,Changlong Li
With the rapid development of information technology and electronics, the traditional textiles hardly fulfill the requirements of wearable electronics. Multifunctional textile-based electronics integrated with energy storage, joule heating, electromagnetic interference (EMI) shielding and sensing has become a favorable solution. Herein, a scalable spray-coating and dip-coating strategy is developed to fabricate the multifunctional reduced graphene oxide/Ti 3 C 2 T x MXenes decorated cotton fabrics. The RGO/MXene modified fabrics show hydrophilic surface, high electrical conductivity, good flexibility and breathability. In addition, the RGO/MXene modified fabrics demonstrate excellent electrochemical performance, and the assembled all-solid-state supercapacitors show one of the highest specific capacitances of 383.3 F g −1 (258 mF cm −2 ). More importantly, the RGO/MXene fabrics show distinctive negative resistance variation and high sensitivity when they are applied as the strain sensors to detect the human motions including the bending of finger, elbow, knee and swallowing process. Moreover, the RGO/MXene fabrics show good joule heating and EMI shielding performance. This work may shed light on cost-effective but high-performance textile-based strain sensors, EMI shielding and electrochemical energy storage devices, and paves the way for the development of multifunctional wearable electronics.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2020
·
IF 4.65
Xiaobao Zhang,Baiyi Shao,Aoping Guo,Zhe Gao,Yong Qin,Ce Zhang,Fangming Cui,Xiaojing Yang
Co-Ni bimetallic oxides were successfully deposited on Ti 3 C 2 T x MXene nanosheets by atomic layer deposition technology and used as pseudocapacitive materials for supercapacitors. The uniform distribution of metal oxide nanoparticles on MXene nanosheets endows the pseudocapacitive materials more active sites and the synergistic effect between CoO x and NiO greatly improves the electrochemical performance. Specifically, as the deposited cycle increased to 90, the sample showed the optimal electrochemical performance with specific capacitance up to 1960 F g −1 (1 A g −1 ), 20.3 times higher by than that of Ti 3 C 2 T x MXene, excellent rate capability (87.3% capacitance retention, 1–18 A g −1 ) and 90.2% capacitance retention after 8000 cycles.
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ACS Nano
·
2020
·
IF 14.588
Xing Zhao,Li-Ya Wang,Chun-Yan Tang,Xiang-Jun Zha,Yong Liu,Bai-Hai Su,Kai Ke,Rui-Ying Bao,Ming-Bo Yang,Wei Yang
An increasing utilization of flexible healthcare electronics and biomedicine-related therapeutic materials urges the development of multifunctional wearable/flexible smart fabrics for personal therapy and health management. However, it is currently a challenge to fabricate multifunctional and on-body healthcare electronic devices with reliable mechanical flexibility, excellent breathability, and self-controllable joule heating effects. Here, we fabricate a multifunctional MXene-based smart fabric by depositing 2D Ti3C2Tx nanosheets onto cellulose fiber nonwoven fabric via special MXene–cellulose fiber interactions. Such multifunctional fabrics exhibit sensitive and reversible humidity response upon H2O-induced swelling/contraction of channels between the MXene interlayers, enabling wearable respiration monitoring application. Besides, it can also serve as a low-voltage thermotherapy platform due to its fast and stable electro-thermal response. Interestingly, water molecular extraction induces electrical response upon heating, i.e., functioning as a temperature alarm, which allows for real-time temperature monitoring for thermotherapy platform without low-temperature burn risk. Furthermore, metal-like conductivity of MXene renders the fabric an excellent Joule heating effect, which can moderately kill bacteria surrounding the wound in bacteria-infected wound healing therapy. This work introduces a multifunctional smart flexible fabric suitable for next-generation wearable electronic devices for mobile healthcare and personal medical therapy.
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ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Cuizhen Yang,Quanguo Jiang,Huajie Huang,Haiyan He,Lu Yang,Weihua Li
Direct methanol fuel cells with high energy conversion efficiency and low hazard emissions have aroused great attention from both academic and industrial communities, but their large-scale commercial application has been blocked by high costs as well as short lifespan of the anode Pt catalysts. Here, we demonstrate a simple and scalable noncovalent strategy for the synthesis of quasi-one-dimensional (1D) Pt nanoworms grown on poly(diallyldimethyl-ammonium chloride) (PDDA)-functionalized Ti3C2Tx nanosheets as anode catalysts for methanol electrooxidation. Interestingly, the introduction of PDDA on Ti3C2Tx nanosheets can not only effectively adjust their surface charge property to strengthen the electrostatic interaction between metal and support but also induce the stereoassembly of worm-shaped Pt nanocrystals with abundant catalytically active grain boundaries, which enable the resulting hybrid to express high electrocatalytic activity, remarkable durability, and strong antipoisoning ability for methanol electrooxidation, which are better than those of the traditional Pt nanoparticle electrocatalysts loaded on carbon black, carbon nanotubes, reduced graphene oxide, and MXene matrixes. Theoretical simulations disclose that the more stable worm-shaped Pt configuration with an optimized electronic structure on the Ti3C2Tx surface possesses a weaker CO adsorption ability than that of the Pt nanoclusters, thereby providing a dramatically enhanced and sustainable electrocatalytic performance.
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Nano Energy
·
2021
·
IF 17.881
Shi-Neng Li,Zhi-Ran Yu,Bi-Fan Guo,Kun-Yu Guo,Yang Li,Li-Xiu Gong,Li Zhao,Joonho Bae,Long-Cheng Tang
Conductive hydrogels are promising in the flexible wearable electronic applications due to their unique feature of intrinsic stretchability, reversible flexibility, and high electrical conductivity . However, severely poor adaptability under cold or hot environmental conditions along with inferior adhesiveness to various substrates greatly hinders the potential applications in such emerging field. Herein, we describe a mechanically flexible and electrically conductive nanocomposite hydrogel composed of polyacrylamide-co-acrylic acid/chitosan covalent-network reinforced by Ti 3 C 2 T x MXene nanosheets within water-glycerol binary solvent via a simple one-pot free radical polymerization . Notably, incorporation of a low content (0.1–0.3 wt%) of MXene promotes the rapid gelation of the polymer molecules in only 10 min. The optimized hydrogel containing 0.2 wt% MXene not only possesses excellent mechanical performance (e.g., tensile elongation of ~1000%) and improved electrical conductivity (~1.34 S/m), but also shows stable temperature tolerance from − 20 to 80 °C and self-adhesion with various substrates (e.g., steel, glass, rubber, plastics and skin) as well as a rapid self-healable feature (~1.3 s). Further, such hybrid MXene hydrogel exhibits dual sensations under different strain (1–600%) and stress (80–3200 Pa) ranges, good applicability for various deformation conditions (tension/bend/compression), and wide temperature adoptability with stable repeatability. Clearly, this versatile MXene nanocomposite hydrogel developed may provide a new route for the rational design and development of advanced skin-like sensor for complex environmental application.
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CERAMICS INTERNATIONAL
·
2021
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IF 4.527
Jiajun Xu,Shiyu Tang,Dong Liu,Zhihui Bai,Xinyue Xie,Xiaoshuang Tian,Weiting Xu,Wenjie Hou,Xiuxia Meng,Naitao Yang
Multilayered structures with abundant interfaces are highly desired for reducing the thickness and improving electromagnetic (EM) attenuation ability. Herein, elaborately designed laminar Fe 3 O 4 /MXene nanosheets exhibit great potential as high-efficiency and lightweight absorbers due to heterogeneous structure coupled with intensive magnetic-dielectric synergistic effect. The MXene nanosheets with metallic conductivity not only serve as a supporter to carry the magnetic Fe 3 O 4 , but also provide massive interfaces to facilitate the transport of charge carriers. Hollow Fe 3 O 4 microspheres were evenly dispersed without apparent agglomeration on the MXene surface, giving rise to largely enhanced consumption ability of –42.7 dB over a broad qualified bandwidth (5.7 GHz) at 2.5 mm. Besides, static density functional theory (DFT) method was introduced to shed light on the absorption mechanism by portraying the interaction between the Fe 3 O 4 and MXene. This study provides a crucial strategy for designing magnetic-supported composites by means of a large family of MXenes as thin and lightweight EM absorbers.
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Materials Today Sustainability
·
2024
·
IF 7.1
Wentao Huang,Jie Xia,Zhigang Li,Xiaoshuan Zhang
The pursuit of simple, cost-effective, and efficient flexible ammonia sensors is an area of keen interest. This study aimed to create a highly sensitive, affordable flexible sensing patch (FDP) for immediate ammonia and impedance monitoring. Using a laser direct writing technique, symmetrical graphene patterns were crafted onto commercial kapton tape. These patterns were folded in half, allowing the lower layer to serve as an impedance sensor and the upper layer as an electrode for ammonia detection. The modified Ti 3 C 2 T x MXene solution was introduced as the sensitive layer in response to ammonia gas, and we also explored how varying thicknesses of this sensitive layer affected the response results. Notably, the results highlighted that FDPs with two thicknesses (50 μL solution) offered optimal ammonia detection. With a detection limit of 150 ppb, impressive sensitivity (18.08%/ppm), exceptional linearity (0.996), and stability within the 0.5 ppm–20 ppm range, the overall performance of the FDP surpassed that of most reported ammonia sensor devices based on graphene materials. FDP was able to better characterize the shelf life of lamb at a cost of no more than $1.5. This study provides solutions for rapid ammonia detection and food quality assessment .
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Small
·
2025
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IF 12.1
Ruixue Li,Peng Song,Zhenyuan Ji,Hu Zhou,Xiaoping Shen,Lirong Kong,Aihua Yuan
MXene film-derived flexible supercapacitors have shown great application foreground for wearable electronics, but the capacitive characteristics, especially when faced with mechanical deformations, are not satisfactory. Herein, a new kind of flexible electrode, MX/D-MoO 3 , is developed by using Ti 3 C 2 T x MXene film (MX) and defect-rich MoO 3 (D-MoO 3 ) as the “main body” and “spacer-contributor”, respectively. Results indicate that, with D-MoO 3 intercalation, notably enlarged layer spacing of Ti 3 C 2 T x nanosheets and boosted electrochemical active sites are fulfilled, which have facilitated wondrous property increases of 342% and 239% when compared to raw MX and MX/MoO 3 , respectively. Particularly, MX/D-MoO 3 -60 has a high specific capacitance of 2734.3 mF cm −2 at 1 mA cm −2 , which surpasses most of the counterparts reported thus far. The MX/D-MoO 3 -60-based all-solid-state supercapacitor presents the largest energy density of 96.3 µWh cm −2 at 205.9 µW cm −2 and an outstanding power density of 1871.4 µW cm −2 at 18.6 µWh cm −2 . Meanwhile, impressive stability with capacitance retention of 91.8% after 5 000 cycles and great mechanical flexibility with capacitance retention of 90.3% under bending angles from 0 to 180° are also exhibited. The superior properties and facile preparation endow MX/D-MoO 3 -60 with promising applications in wearable energy storage.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 3
·1-13
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IF 5.3
Xu Yuying,Chen Lijuan,Guo Xiaohui,Zhang Jian,Guo Xiaobing,He Ziqian,Zhang Jiani,Han Dongxue
A label-free photoelectrochemical (PEC) biosensing strategy was constructed based on a Cu 2 MoS 4 @Ti 3 C 2 T x MXene heterojunction for the sensitive detection of tetracycline (TC) in milk. The Cu 2 MoS 4 @Ti 3 C 2 T x MXene heterojunction substantially facilitates the separation of photogenerated electron–hole pairs, a key element in enhancing the photocurrent response. Cu 2 MoS 4 , renowned for its visible-light absorption and photocatalytic properties, is combined synergistically with Ti 3 C 2 T x MXene, contributing a large surface area and outstanding electrical conductivity. The heterojunction not only elevates photocatalytic efficiency but also provides abundant π–π stacking sites on the surface of Ti 3 C 2 T x MXene. These sites enable the direct immobilization of the TC aptamer without chemical modification, thereby minimizing marker interference and improving the detection accuracy. Furthermore, the heterojunction structure broadens the light-absorption spectrum and enhances charge-transfer efficiency, resulting in a higher photocurrent response. The proposed PEC aptasensor demonstrates a favorable linear response to TC within the concentration range 5 to 300 nM, with a detection limit of 1.24 nM. These results are comparable to those achieved by high-performance liquid chromatography. This study is expected to pioneer a novel approach for the design of a label-free PEC aptasensor applicable to the bioanalysis of food samples. Graphical abstract
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Scientific Reports
·
2024
·Vol. 14
·期 1
·1-12
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IF 3.8
Dong Chaoyang
To improve anti-icing traits of outdoor coatings, a synergy between photothermal and hydrophobic anti-icings was utilized to fabricate copolymer/Ti 3 C 2 T x MXene composite coatings with good transparency and adhesion. MXene contributes to photothermal trait from local surface plasmon resonance effect. Copolymer enables hydrophobicity from perfluoroalkyls-induced low surface energy and high surface roughness. An increase in MXene dose results in an increased surface roughness. With 140.0 ± 2.2° of water contact angle and 70% of light transmittance, the optimal film bears 2 wt% of MXene. High MXene dose results in large temperature-increase of film under sunlight. After 15 min of sunlight exposure, the temperature of optimal film surface in icing simulation increases from − 18 ℃ to 7.2 ℃. After 48 h of acid immersion, the temperature-increase of optimal film surface based on 300 s of sunlight irradiation reaches 28.7 ± 1.2 ℃. After 48 h of ultraviolet irradiation, the temperature-increase of optimal film surface is 30.7 ± 0.8 ℃. This surface has a water contact angle of 132.7 ± 1.1° after 48 h of acid immersion. This study gives impetus to a preparation of various composite coatings for outdoor anti-icing/deicing.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Liucheng Cao,Miao Chen,Yiming Zhang,Jingying Hu,Yi Wu,Ying Chen,Ruijia Wang,Haoyi Yuan,Fuxiang Wei,Yanwei Sui,Qingkun Meng,Lifeng Cheng,Shengqi Wang
Manganese-based cathodes are competitive candidates for state-of-the-art aqueous zinc-ion batteries (AZIBs) because of their easy preparation method, sufficient nature reserve, and environmental friendliness. However, their poor cycle stability and low rate performance have prevented them from practical applications. In this study, Mn 3 O 4 nanoparticles were formed in situ on the surface and between the interlayers of Ti 3 C 2 T x MXene, which was pretreated by the intercalation of K + ions. Ti 3 C 2 T x MXene not only provides abundant active sites and high conductivity but also hinders the structural damage of Mn 3 O 4 during charging and discharging. Benefiting from the well-designed K-Ti 3 C 2 @Mn 3 O 4 structure, the battery equipped with the K-Ti 3 C 2 @Mn 3 O 4 cathode achieved a maximum specific capacity of 312 mAh/g at a current density of 0.3 A/g and carried a specific capacity of approximately 120 mAh/g at a current density of 1 A/g, which remained stable for approximately 500 cycles. The performance surpasses that of most reported Mn 3 O 4 -based cathodes. This study pioneers a new approach for building better cathode materials for AZIBs.
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Surfaces and Interfaces
·
2024
·
IF 5.7
Donghai Wu,Hanyu Fang,Guanghua Lu,Runren Jiang,Jianchao Liu
In this study, four pharmaceutical compounds including sulfamethoxazole (SMX), oxytetracycline (OTC), ciprofloxacin (CIP), and ibuprofen (IBU) with different functional groups and p K a , were selected as representative pollutants to systematically investigate the Pharmaceutical and Personal Care Products (PPCPs) adsorption on a nanomaterial Ti 3 C 2 T x MXene in simulated solution and real surface water . The results show that Ti 3 C 2 T x was an excellent PPCPs adsorbent, but the process was affected by the characteristics of pollutants pronouncedly, the obtained maximum adsorption capacity were OTC (210.97 mg/g) > IBU (185.05 mg/g) > CIP (160.60 mg/g) > SMX (68.12 mg/g). Specially, the charge screen effect caused Ti 3 C 2 T x precipitation during CIP adsorption. The response surface methodology analysis indicates that initial solution pH (3–11) had significant effects, while the influence of humic acid (0–10 mg/L) or sodium chloride (0–10 mg/L) was limited, and the interactions between these factors was slight. In the co-adsorption process, the competitive effects reduced the adsorption of SMX and IBU, however, the enhanced positive ionization and the possible electrostatic repulsive interactions promoted that of CIP and OTC. In real surface water, although the influence of natural organic matters was negligible, the preferential adsorption of background metal ions such as aluminum and calcium ions reduced the adsorption capacity of the selected PPCPs by approximately 29.9 % to 88.4 %. Moreover, the adsorbent characterization conjoined with performance examination imply that electrostatic attraction dominated the Ti 3 C 2 T x adsorption of PPCPs, and hydrogen bonding interactions as well as surface complexation might also contributed. These observations suggest that Ti 3 C 2 T x MXene has the potential for use as adsorbent to eliminate aqueous PPCPs, nevertheless, the interference of co-existing metal ions and the stability of adsorbent were also noteworthy.
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