Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Peng Wang,Chengming Yu,Jiale Huang,Zhudan Jiang,Xinyu Jiang,Shanglin Xiang,Dongyu Cai
Developing an efficient photocatalyst with good recyclability is vital for the sustainability and affordability of photocatalytic technology in the treatment of wastewater. This work demonstrates a facile route for realizing robust TiO 2 @Ti 3 C 2 T x fibers with exceptional photocatalytic capability and recyclability. In this route, an alkalization/de-alkalization process was developed to treat a concentrated Ti 3 C 2 T x suspension known as MXene sediment, followed by a wet spinning process. The pretreatment of Ti 3 C 2 T x suspensions promoted the expansion of the d-spacing of stacked Ti 3 C 2 T x layers in the microfibers. It was found that this was beneficial for increasing the population of TiO 2 nanoparticles grown from Ti 3 C 2 T x layers. The calcination of these fibers was systematically investigated to optimize the photocatalytic performance of TiO 2 @Ti 3 C 2 T x fibers. Thanks to the TiO 2 nanoparticles, the resulting fibrous photocatalysts not only enabled the fast degradation of RhB dyes but also exhibited excellent recoverability from water.
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高影响因子
TALANTA
·
2025
·
IF 6.1
Bowen Shen,Biao Hong,Xinyue Guo,Ruonan Hu,Luodi Wang,Yuchuan Jiang,Wei Li,Wenqing Liu,Zhengyan Wu,Pengqi Yang
Precise detection of ultralow-level antibiotics, such as picomole, in aqueous environments is significant for human health, however, it presents a great challenge to the adsorption capacity and electrocatalytic ability of sensing materials. Here, we used a one-step hydrothermal method to in situ grow spindle-like CoFe-based metal-organic frameworks (MOFs) with a size of about 50 nm in the region of hydrophilic MXene-loading hydrophobic carbon paper. By combining MOFs with abundant adsorption sites and MXene with high conductivity, the problems of adsorption and electrons transfer of ultralow-level antibiotics have been solved, and achieving precise detection of picomole-level antibiotics. As a result, the CoFe-MOFs/MXene/HCP sensing electrode exhibits the ultralow limit of detection with 33 pM and a wide detection range with 0.1 nm–2.0 mM for chloramphenicol (CAP) detection, as well as the designed sensor has excellent anti-interference, reproducibility, and stability. Importantly, the prepared sensing electrode exhibits reliable analytical results for CAP in real water samples, such as bottled water, milk, and urine, indicating that the prepared sensors have a great potential for application in the analysis of antibiotics in real samples.
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PubMed
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
·
IF 8.3
Zhaoyang Li,Yahong Li,Weijun Zhao,Yuezhan Feng,Bing Zhou,Chuntai Liu
Flexible transparent electromagnetic interference (EMI) shielding films in visual windows are crucial for the innovation of optoelectronic devices, but the challenge of balancing light transmittance and EMI shielding effectiveness (SE) still exists. Herein, this work described a flexible transparent MXene@SWNTs/PC film with a hierarchical conductive layer that was fabricated via an alternating rotation spraying method. The multi-scale hierarchical structure configured with 1D SWNTs and 2D MXene endow the obtained film with good comprehensive properties, i. e, low sheet resistance of 32.8 Ω/sq at 56.1% light transmittance, thus causing a satisfactory EMI SE of 20.8 dB. Moreover, the transparent shielding films exhibit remarkable flexibility, which can maintain steady EMI SE after 1000 continuous bending cycles. More importantly, the low sheet resistance and high light absorption capacity of hybrid conductive layer facilitate the transparent shielding film with low-voltage-driven electric heating effect and outstanding photothermal conversion ability, respectively, ensuring the normal operation under extreme cold condition. The combination of good light transmittance, satisfactory EMI shielding performance, and multi-source thermal response enables MXene@SWNTs/PC film to have great potential as a transparent shielding film in emerging optoelectronic devices.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xu Zhou,Xiao-Ai Ye,Xu Zhang,Dong Wen,Hong Wang,Gui-Gen Wang
The increasingly serious electromagnetic radiation and electronic waste pose a significant threat to public health and the operation of electronic devices. Despite the enormous potential of highly conductive Ti 3 C 2 T x MXene-based electromagnetic interference (EMI) shielding materials, significant challenges persist in terms of mechanical flexibility and antioxidation. In this study, it was firstly proposed for a scalable method to prepare MXene Ti 3 C 2 T x /gelatin/sodium lignosulphonate (MXene/GEL/SL) films with good biodegradability, and Fe 3+ ions were introduced to enhance cross-linking degree and stabilize the gelatin matrixes, which endowed the films with mechanical flexibility and durability. The film (MXene content: 30 wt%) has a thickness of merely 0.08 mm, exhibiting a high SE/d value of 432 dB/mm and maintaining its good EMI shielding performance even after being soaked in water for 15 days. Additionally, the film-based triboelectric nanogenerator (TENG) even in 85 % humidity manifest excellent open-circuit voltage (230 V), short-circuit current (28 μA) and power density (2.9 W/m 2 ), respectively. Also, the TENG demonstrates good utility as a self-powered sensor when attached to different parts of human body to monitor human health. Therefore, the as-developed MXene/GEL/SL film presents good application prospects in the fields of both electromagnetic shielding and self-powered sensing for wearable electronics.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Fayun Wei,Fanghua Liang,Yanrui Zhao,Zhuyu Ji,Ruiqing Li,Hui Liu,youchao Kong,Honggang He,Weichun Huang,Chunyan Cao,Wei Zhang,Bin Fei,Mingzheng Ge,Tingting Yan
High-capacity conversion-type anodes with high volume expansion and low conductivity face limitations in meeting the high energy density demands of lithium-ion batteries. Herein, MOF-derived CoSe2/ZnSe bimetallic selenide nanoparticles are confined in layered Ti3C2Tx MXene (CoSe2/ZnSe@MX) as electrodes for high-performance lithium-ion batteries by in-situ self-assembly and selenization strategy. The interconnected conductive MXene networks not only can provide highways for charge transfer, but also can effectively accommodate the large volume expansion, improving the structural stability. Meanwhile, the bimetallic CoSe2/ZnSe nanoparticles with heterostructures and Se vacancies offer abundant redox reaction sites, promote Li-ions diffusion, and enhance Li-ions adsorption. Thus, the CoSe2/ZnSe@MX electrodes exhibit a remarkable capacity of 830.8 mAh g-1 at 0.1 A g-1, high-rate capability of 290.8 mAh g-1 at 5 A g-1, and superior cycling stability with 63.1% capacity retention after 2000 cycles. Furthermore, the full cell was demonstrated practical applicability with a high capacity of 156 mAh g-1 at 0.1 C. This facile technique is promising to construct high-performance energy storage devices.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Zhaoyang Li,Jiongru Li,Bo Wu,Huige Wei,Hua Guo,Zeinhom M. El-Bahy,Baosheng Liu,Muhun He,Saad Melhi,Xuetao Shi,Saleh D. Mekkey,Yunlong Sun,Ben Bin Xu,Zhanhu Guo
Flexible supercapacitors with high mechanical strength, excellent flexibility, and high performance are highly desired to meet the increasing demands of flexible electronics. However, the trade-off between mechanical and electrochemical properties remains challenging. In this context, an interface-engineered strategy approach was proposed to construct polylactic acid (PLA)/polyaniline (PANI)/MXene (PPM) film electrodes for flexible supercapacitor applications. In the PPM electrode, the porous PLA prepared from the nonsolvent-induced-phase-separation method served as an ideal flexible substrate, providing excellent flexibility and high mechanical strength, whereas PANI as the coupling agent, enhanced the interfacial strength between PLA and the electroactive MXene that was firmly anchored and deposited on PLA through a facile layer-by-layer dip coating method. The tensile strength at break, elongation at break, and toughness of PPM are 53.09 MPa, 11.09 %, and 4.12 MJ/m 3 , respectively, much higher than those of pure MXene (29.36 MPa, 4.62 %, and 0.75 MJ/m 3 ). At an optimum mass loading density of 3 mg cm −2 for MXene, the fabricated PPM3 film electrode achieved a high specific capacitance of 290.8 F g −1 at a current density of 1 A g −1 in the three-electrode setup, approximately 1.5 times that of 190.8 F g −1 for pure MXene. Meanwhile, the symmetric all-solid-state supercapacitor based on PPM3 film electrodes delivers a high specific capacitance of 193.7 F g −1 at a current density of 0.25 A g −1 , with a corresponding high energy density of 9.3 Wh kg −1 at a power density of 291.3 W kg −1 . The SC retains 86 % of its original capacitance even bent at 120° and also possesses an excellent fire-retardant ability, demonstrating its great potential for flexible and safe wearable electronics.
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高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Yadi Zhang,Haikuan Yuan,Xinyi Chen,Zhenlin Jiang,Jie Lu,Fan Xin
MXene has a multilayer structure, which can be peeled and layered into single or multilayer nanosheets, and it possesses multiple functional groups that can be easily modified. MOF-303, a kind of metal–organic framework material, was synthesized by the solvent hydrothermal method using aluminum ion as the center metal and 3,5-pyrazole dicarboxylic acid as the organic ligand. In this paper, MOF-303 was grown in situ on Ti3C2Tx MXene to synthesize the MXene@MOF-303 composite, which combined the advantages of both MXene and MOF-303. Using the MXene@MOF-303 composite as blending fillers and a polyacrylonitrile (PAN) ultrafiltration (UF) membrane as the substrate, an MXene@MOF-303/poly(vinyl alcohol) (PVA)/PAN composite membrane was fabricated. The composites and membranes were characterized by FTIR, XRD, SEM, and the pervaporation desalination of the composite membrane was also tested. The experimental results showed that the incorporation of MXene@MOF-303 composites improved the separation performance of the PVA membrane. The MXene@MOF-303/PVA/PAN composite membrane, loaded with 0.5 wt % of MXene@MOF-303, achieved a high flux of 15.87 kg·m–2·h–1 and a rejection of 99.84% when desalinating 3.5 wt % NaCl solution at 35 °C by pervaporation.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Huan Zhang,Hui Zhao,Tao Wang
High sensitivity, good mechanical property, and durability are critical parameters to value piezoresistive sensing performance, which highly rely on the interfacial interaction between the conductive filler and the polymer matrix. Using polydopamine (PDA) to improve the interfacial interaction is the usually adopted manner. However, unsatisfactory sensing performance is afforded, resulting from the formation of inhomogeneous deposition of PDA on the polymer matrix. In this work, for the first time, a piezoresistive sensor comprising anisotropic PU foam with a tightly adhered MXene conductive layer (MXene@PU) is fabricated by microwave sintering. The strong interfacial adhesion induced by microwave sintering coupled with the stress–strain amplification effect imparted by the aligned parallel channels of the directional TPU foams results in trinity excellence in sensitivity, mechanical performance, and durability. As a result, the as-fabricated sensor delivers a high sensitivity of 0.109 kPa–1, an impressive gauge factor of 7.78, and an excellent mechanical property with a compressive strength of 1603 kPa at 80% strain, which is 11.1 times, 16.2 times, and 1.6 times that of PDA-treated traditional ones, respectively. Moreover, superior durability is demonstrated for the MXene@PU foam sensor even under macropressure or macrostrain, which is a big challenge for conductive nanomaterial-coated polymer matrix-derived sensors. This novel approach provides a practical methodology for architecting a high-performance piezoresistive sensor that is very attractive in the intelligent sensing field.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yang Wang,Meili Ding,Wei Rong,Suyu Kong,Jianfeng Yao
Photodriven CO 2 conversion has been widely recognized as an effective pathway for achieving carbon neutrality. In this paper, we demonstrate the immobilization of bimetallic Zn/Fe ZIF onto the surface of Ti 3 C 2 T x MXene via an in situ growth process for photodriven solvent-free CO 2 cycloaddition. MXene can extend the optical response of bimetallic ZIF into the near-infrared region. In turn, the incorporated MOF particles effectively prevent the layers of MXene from stacking. The resulting Zn 20 Fe 1 -ZIF/MXene has improved activity (96% yield) in the cycloaddition of epichlorohydrin with 1 bar CO 2 under full spectrum illumination (350 mW/cm 2 ) for 6 h, ca. 3.4, 1.7, and 1.2 times higher than those of pure Zn 20 Fe 1 -ZIF, MXene, and the physical mixture, respectively. Besides, this hybrid catalyst provides desirable stability and performance even after several catalytic cycles, exposure to humid environment or under diluted CO 2 (15%). Control experiments and infrared thermography reveal the synergistic photocatalytic-photothermal contribution of hybrid materials to the photoinduced CO 2 fixation. Our research offers a facile method to construct MOF containing photocatalysts for application of CO 2 conversion with high practical utility.
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高影响因子
Advanced Composites and Hybrid Materials
·
2024
·Vol. 7
·期 5
·1-9
·
IF 23.2
Shen Yong,Li Guojie,Cheng Yajie,Li Yahong,Alhadhrami A.,Fallatah Ahmed M.,Alshammari Dalal A.,Zhou Bing,Feng Yuezhan,Liu Chuntai
Developing a multifunctional protection material compatible with infrared (IR) stealth and electromagnetic interference (EMI) shielding is urgently required but challenging to ensure special human safety and maintain the smooth operation of electronic equipment. Herein, it is designed and fabricated a double-layered ANF/MXene film containing a thermally insulated aramid nanofiber (ANF) aerogel and low emissivity MXene coating with integrated long-term thermal camouflage at elevated temperatures and highly efficient EMI shielding capability. In this system, the lower aerogel film can act as a barrier to insulate heat transfer through its novel skin–core structure under ultralow directional thermal conduction, while the upper Ti 3 C 2 T x MXene coating can provide a very low emissivity surface and highly conductive network. Owing to its unique double-layer structure, the ANF/MXene film demonstrates a significant EMI shielding effectiveness of 43.6 dB and a remarkably low emissivity of 0.24, delivering excellent IR stealth performance across various ambient temperatures. This research lays the foundation for the creation of versatile protective materials that have great potential for use in both military and civilian contexts.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jiadong Li,Caiyun Liang,Chuanwei Lin,Yuna Wang,Yongjiu Liang,Dewen Dong
MXene-based aerogel has shown great application potential in electromagnetic interference (EMI) shielding because of its low density and low reflection efficiency. However, the fabrication of MXene-based aerogels for EMI shielding with exceptional elasticity, compressibility, and durability remains a challenge because of the limited mechanical property and oxidation behavior of MXene. Here, MXene/carboxymethylcellulose sodium composite aerogels were prepared by using unidirectional freezing combined with binary organosilane cross-linking. The composite aerogel with a MXene content of 90 % displayed an exceptional EMI shielding efficiency (45.8 dB) at a super low density (19.75 mg/cm 3 ), and the density-normalized shielding efficiency achieved a high level of 11,595 dB·cm 2 /g. The modification of organosilanes endowed the cross-linking network formed in the composite aerogel with great elasticity and compressibility. The organosilanes also helped the aerogel build a superhydrophobic surface, leading to a contact angle of 151.5°. Given the excellent superhydrophobicity and mechanical properties, the aerogel could maintain its EMI shielding performance after being dipped in water or compressed for 100 times. Furthermore, the aerogel prepared in this study possessed thermal insulation performance and piezoresistive feature. This study provides a convenient strategy to fabricate multifunctional MXene-based aerogels with low density, elasticity, and durability, which shows great application potential in the fields of EMI protection, thermal management, wearable devices, and smart sensors.
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2024
·
IF 8.1
Shuang Wu,Ting-yu Zhu,Zhu Zeng,De-xiang Sun,Jing-hui Yang,Xiao-dong Qi,Yong Wang
As electronic devices become more integrated into daily life, concerns about electromagnetic radiation pollution become more severe, despite the increased portability they offer. Designing a lightweight and multifunctional material that is environmentally friendly, thermally conductive, and electromagnetically shielded is urgently needed. In this work, novel composites were fabricated by incorporating Ag@MXene hybrid particles into the wood-based aerogel. Compared with the aerogels containing only Ag nanoparticles (AgNPs) or MXene , the Ag@MXene/W aerogel exhibited more homogeneous dispersion of unfolded MXene nanosheets and more AgNPs but higher porosity (97.1 %) and smaller density (0.047 g cm −3 ). Consequently, the Ag@MXene/W aerogel exhibited high compressibility and low energy dissipation, remarkable strain sensitivity, impressive electrical conductivity (33.9 S m −1 ) and specific electromagnetic shielding efficiency (5765.96 dB cm 2 g −1 ), and high thermal conductivity (0.81 W m −1 K −1 ). The excellent comprehensive performances ensure that the aerogel has wide applications in various fields, including electromagnetic pollution protection, strain detecting, and thermal management, etc.
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