COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Qian Zhong,Jin Liu,Gaoke Zhang
Visible-light photocatalytic activation of peroxymonosulfate (PMS) is a promising strategy for treating refractory organic pollutants. In this study, a novel nitrogen-doped TiO 2 /Ti 3 C 2 MXene composite (N-TiO 2 /Ti 3 C 2 ) was synthesized via an impregnation-calcination method using cetyltrimethylammonium bromide (CTAB) as the nitrogen source. N-doping effectively narrowed the bandgap of TiO 2 , while the highly conductive Ti 3 C 2 MXene served as an electron-transfer platform, thereby synergistically enhancing light absorption and charge carrier separation. The N-TiO 2 /Ti 3 C 2 exhibited a Brunauer-Emmett-Teller surface area of 35.86 m 2 /g, approximately 1.94 times higher than that of the undoped TiO 2 /Ti 3 C 2 , due to CTAB intercalation-induced structural regulation. Under LED visible light, the N-TiO 2 /Ti 3 C 2 /PMS system achieved 98.5% of rhodamine B degradation within 100 min and 81.3% of tetracycline degradation within 40 min, with good stability over a wide pH range (3.1-10.0). Mechanistic studies identified that sulfate radicals (SO 4 • − ), singlet oxygen ( 1 O 2 ), and holes (h⁺) were the dominant reactive species. LC-MS analysis elucidated the degradation pathways of rhodamine B and tetracycline. This study presents an efficient MXene-based photocatalyst for PMS activation, offering a promising strategy for wastewater treatment.
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RSC Advances
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2026
·Vol. 16
·期 32
·29576-29588
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IF 6.1
Jin Yang,Xiaoxia Yan,Yifei Qin,Dazhi Zhang,Jingyi Zhao,Yi Yu,Qingjun Liu,Wenshuai Jiang
Dye wastewater, which poses serious threats to ecosystems and human health, is very difficult to treat. Graphene oxide (GO) has significant potential for dye adsorption. However, the practical application of GO in dye wastewater treatment is hindered by its high water solubility, which prevents its efficient separation and recovery after dye adsorption. In this study, we found that doping a small amount of MXene into GO induces composite dye-bridged reassembly during dye adsorption. The reassembled composite possesses favorable stability under external forces, thus enabling solid–liquid separation and material recovery without an external magnetic field. Notably, this dye adsorption-induced reassembly phenomenon was not observed in pure GO or pure MXene dye adsorption systems. The experimental results demonstrated that a small-fragmented GO/MXene composite with 20% MXene doping achieved optimal methylene blue (MB) adsorption and dye-bridged reassembly performance, with a maximum experimental adsorption capacity measured in practice of 883.17 mg g−1. The MB removal capacity of the composite was maintained over a wide pH range, with dye-bridged reassembly preferentially occurring under acidic and weakly alkaline conditions (pH 3–9). Higher dosages enhanced MB removal but impaired the dye-bridged reassembly, whereas thermal annealing reduced the composite adsorption capacity but preserved its dye-bridged reassembly ability. Although the presence of cations hindered MB adsorption, they promoted reassembly efficiency, which was positively correlated with cation valence. A quantitative recovery of approximately 95% was achieved with the GO/MXene composite. The proposed strategy enables efficient and scalable dye removal and offers a new path for high-performance and sustainable dye wastewater treatment.
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Journal of Inorganic and Organometallic Polymers and Materials
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2026
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IF 6
Wang Shijun,Wang Mengxu,Zhu Enhong,Hu Jingran,Wang Yushu,Ma Ning,Zhang Xinyue,Abd-El-Aziz Alaa S.
Zinc-ion batteries (ZIBs) have been identified as highly safe, sustainable, and economically viable technologies for energy storage. However, their actual implementation has encountered significant obstacles, including dendritic formation, hydrogen evolution corrosion, and interfacial side reactions. In this study, an anhydrous eutectic gel electrolyte (OTF-PVA12.5) was developed by dissolving polyvinyl alcohol (PVA) in a deep eutectic solvent (DES) consisting of zinc trifluoromethanesulfonate (Zn(OTF) 2 ) and ethylene glycol (EG), which was then combined with a Ti 3 C 2 MXene-modified anode to construct a new electrolyte–anode system. The findings demonstrate that the OTF-PVA12.5 gel electrolyte displayed superior performance, and when combined with an MX@Zn anode, the battery’s cycling performance was significantly improved. MX@Zn//OTF-PVA12.5//MX@Zn button cells could reliably deposit and strip for 1,169 h at a current density of 0.5 mAh/cm 2 , while MX@Zn//OTF-PVA12.5//PANI button cells were capable of enduring 2,000 stable charge-discharge cycles at a current density of 0.5 A/g, exhibiting an average coulombic efficiency of 99.8%. This research presents a cooperation approach that integrates the optimization of eutectic gel electrolytes with MXene-enhanced zinc anodes. This methodology improves battery performance by redesigning the anode interface and optimizing the electrolytes.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 3
·190
·
IF 5.4
Huo Weijia,Yu Ruitao,Zhao Long,Zhao Ruibin,Li Muze,Yu Shunguang,Xu Yapeng,Liu Tong,Cao Minghui
Improper pen-holding posture can lead to increased pressure on the finger joints of school-aged children, muscle strain in the wrists and arms, illegible handwriting and slow writing speed. To address this challenge, we developed a PVA-CNF-MXene (PCM) hydrogel sensor via a repeated freeze-thaw method, which exhibits excellent mechanical properties (maximum strain of 450%), high sensitivity (GF = 3.479), fast response (~ 0.2 s), and fatigue resistance (> 4,000 cycles). Based on this material, we constructed an intelligent human-computer interaction system for self-adaptive writing posture monitoring. The sensor maintains good stability across various ranges, capable of monitoring both large body movements and subtle facial activities. More importantly, the integrated system achieves 95.83% accuracy in identifying incorrect writing postures and provides real-time corrective feedback, while also enabling handwriting recognition (94.5% accuracy) and personalized user identification (96.88% accuracy). This work demonstrates the great potential of MXene-based hydrogels in next-generation human-computer interaction applications.
Section
Graphical abstract
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Xinhui Wang,Jing Cheng,Zhangxue Han,Wanli Cheng,Guangping Han,Yonggui Wang,Dong Wang
Conductive hydrogels have garnered significant attention in the field of flexible wearable sensors due to their intrinsic conductivity and tunable mechanical properties. However, simultaneously achieving both high mechanical stability and high sensing sensitivity remains a significant challenge. In this study, a conductive hydrogel with a low-hysteresis interpenetrating polymer network structure was fabricated via one-pot free-radical polymerization. The three-dimensional network of bacterial cellulose (BC) provides mechanical support for MXene, forming the first network layer of the hydrogel via hydrogen bonding. The second network is constructed by in situ polymerization of acrylamide (AM) within the BC framework. The incorporation of BC significantly improves both mechanical strength and electrical conductivity, effectively overcoming the typical trade-off among strength, toughness, and conductivity observed in conventional conductive hydrogels. As a result, the optimized hydrogel exhibits exceptional stretchability (elongation at break ~1800%), high toughness, excellent resilience, and high conductivity (435.6 mS m −1 ), along with a rapid response time of 400 ms. Moreover, the hydrogel demonstrates high sensing sensitivity (GF = 11.48 at 600–800% strain) and long-term signal stability, enabling its application in flexible wearable sensors for accurate detection of human motion and voice signals. These properties highlight the hydrogel's broad potential for use in human-machine interface technologies.
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CARBON
·
2022
·
IF 11.307
Dengji Xu,Que Huang,Likai Yang,Yanjun Chen,Zhumao Lu,Huijuan Liu,Peijie Han,Li Guo,Chao Wang,Changcheng Liu
Based on the broad scope of applications in electronics, the development requirements of excellent electronic packaging materials with efficient thermal management performance and high electromagnetic interference shielding effectiveness (EMI SE) are critical, while which are also hardly compatible for a single material such as an elementary substance or a simple chemical compound. Therefore, a series of novel composites filled with phase change material (PCM) polyethylene glycol (PEG) were developed with MXene as the skeleton, and flame retardant Mg(OH) 2 was added to achieve flame retardancy for composites under high temperature environment. As a result, the prepared MXene@PEG/Mg(OH) 2 in this work could achieve an excellent EMI SE of 38.8 dB in X-band, and the thermal conductivity rose from 0.26 to 0.95 W/m·K, while the composite film also presented certain mechanical properties , with the latent heat of 153.72 J/g. Furthermore, the shape stability of the composite material was favourable due to the capillary function of MXene, which effectively forbade the leakage behavior of PCMs during solid-liquid phase transition. The design of MXene@PEG/Mg(OH) 2 composite with stable structure provided a new idea for manufacturing EMI SE materials which often exposed to electromagnetic radiation, which indicated potential great significance for a new generation of packaging materials application in electronic equipment field.
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ACS Applied Energy Materials
·
2022
·
IF 6.959
Qing Zhao,Shanshan Tan,Ji Li,Jiaming Li,Xianyu Chu,Cuimei Zhao,Junkai Zhang,Li Wang,Shichong Xu,Ming Lu
The single-component electrode materials have not met the requirement of high performance of energy storage devices. Hybrids combined with two-dimensional materials and nanoparticles exhibit problem-solving ability. In this work, ZnFe2O4@V2CTx hybrids are fabricated by in situ chemical co-precipitation, and the morphology, microstructure, and electrochemical performance are characterized. Scanning electron micrscopy images show the internal gaps of the accordion-like structure of V2CTx MXene are filled with ZnFe2O4 nanoparticles. On the basis of the different lithium storage mechanisms and the stable interface electronic transfer, the hybrid with the weight ratio of V2CTx MXene and ZnFe2O4 being 0.5:1 exhibits an amazing reversible capacity of 1189 mAh g–1 after 100 cycles, which is 7.62 times that of pure ZnFe2O4. Obviously, ZnFe2O4@V2CTx MXene electrodes contribute synergetic charge storage via the redox and intercalation mechanism. Interestingly, ex situ X-ray photoelectron spectra are utilized to explore the complicated electrode reaction. These results tend to confirm Zn has not been involved in the lithium storage process. The study will illuminate the application prospect of transition metal oxides-based materials as high-performance electrodes.
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COMPOSITES SCIENCE AND TECHNOLOGY
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2022
·
IF 9.879
Zhongming Li,Dong Feng,Bin Li,Delong Xie,Yi Mei
Wearable sensors with a three-dimensional (3D) structural design and electromagnetic shielding performance are significant for the future development of wearable electronic devices. However, it remains a challenge to achieve the target goals. Herein, the thermoplastic polyurethane (TPU)/Ti 3 C 2 T x (MXene)/MnFe 2 O 4 /Multi-walled carbon nanotubes (MWCNTs) ( i.e ., TMMM) composites were innovatively designed using parametric Voronoi structure with different pore sizes and porosity upon fused deposition molding (FDM) printing. The two-dimensional (2D) MXene/zero-dimensional (0D) MnFe 2 O 4 hybrid fillers were built initially by electrostatic bonding strategy, followed by adding the one-dimensional (1D) MWCNTs as a conductive bridging agent, this way endowed the nanofillers with different dimensions uniformly dispersed to form a superb conductive network structure in the TPU matrix. When applied as pressure sensors , the TMMM composites exhibited adjustable gauge factor (GF = 1.33–3.73), extensive sensing compression range (∼89% strain with 12.03 MPa stress), good durability (6000s cyclic compression), which was very conducive to monitoring human motion, such as finger bending, wrist bending, speech recognition, etc . The sensing mechanisms were also studied using the Finite element simulations , and the variation trend of resistance change was in good agreement with the simulation results. The average electromagnetic interference shielding efficiency (EMI SE) value of the 2.1 mm-thick printed composite reached 31.2 dB , suggesting that 99.9242% of electromagnetic waves can be shielded. The proposed strategy not only provided a solution to reduce the weight of electromagnetic shielding materials , but also provided an efficient method for developing porous 3D printed parts with adjustable sensing properties at the macroscopic scale towards wearable electronic devices.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Chunqing Yang,Dongzhi Zhang,Dongyue Wang,Huixin Luan,Xiaoya Chen,Weiyu Yan
Flexible strain sensors have significant progress in the fields of human–computer interaction, medical monitoring, and handwriting recognition, but they also face many challenges such as the capture of weak signals, comprehensive acquisition of the information, and accurate recognition. Flexible strain sensors can sense externally applied deformations, accurately measure human motion and physiological signals, and record signal characteristics of handwritten text. Herein, we prepare a sandwich-structured flexible strain sensor based on an MXene/polypyrrole/hydroxyethyl cellulose (MXene/PPy/HEC) conductive material and a PDMS flexible substrate. The sensor features a wide linear strain detection range (0–94%), high sensitivity (gauge factor 357.5), reliable repeatability (>1300 cycles), ultrafast response–recovery time (300 ms), and other excellent sensing properties. The MXene/PPy/HEC sensor can detect human physiological activities, exhibiting excellent performance in measuring external strain changes and real-time motion detection. In addition, the signals of English words, Arabic numerals, and Chinese characters handwritten by volunteers measured by the MXene/PPy/HEC sensor have unique characteristics. Through machine learning technology, different handwritten characters are successfully identified, and the recognition accuracy is higher than 96%. The results show that the MXene/PPy/HEC sensor has a significant impact in the fields of human motion detection, medical and health monitoring, and handwriting recognition.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Yu Zhang,Qiang Gao,Xianzhe Sheng,Shuai Zhang,Junjie Chen,Yan Ma,Jianbin Qin,Yongsheng Zhao,Xuetao Shi,Guangcheng Zhang
The design and fabrication of electromagnetic interference shielding films with a novel structure to eliminate undesirable electromagnetic pollution is an important research direction. However, it is still a challenge to combine and organize nanofillers in different dimensions into the structured network in polymer-based electromagnetic interference (EMI) shielding composites. In this work, a sandwich structure polyimide (PI) composite film with alternative 2D-MXene network and 1D-Silver nanowires (Ag NWs) network was prepared through the “electrospinning-immersion-hot pressing” method. With the increase of Ag NWs content, the EMI shielding effectiveness (SE) gradually increases while maintaining good flexibility and mechanical robustness. The EMI SE and the tensile strength of 150 μm thick sandwich composite film can reach up to 79.54 dB and 39.82 MPa, respectively. The prepared flexible and robust PI composite film with a sandwich structure has high EMI SE with less metal content, which can provide guidelines for the development of high-performance EMI polymeric films with potentials in wearable devices and equipment.
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Nanoscale
·
2022
·Vol. 15
·期 6
·2624-2632
·
IF 8.307
Weijia Liu,La Li,Guozhen Shen
Frequently used aqueous electrolytes in MXene-based Zn-ion hybrid microsupercapacitors (MSCs) limit their cycling and rate stability. The use of metal and nonmetal additives in electrolytes for the performance improvement of Zn-ion MSCs is considered a valid method. Herein, we propose an additive assisted Zn(CF3SO3)2 electrolyte as a redox-active electrolyte to prepare a flexible MXene-based Zn-ion hybrid MSC by a facile spraying method, and it consists of a conductive Ti3C2Tx–LiCl current collector and a Ti3C2Tx–DMSO cathode. In the process of the current density change (from 5 A cm−3 to 30 A cm−3 and then to 5 A cm−3), the capacity retention of the as-fabricated MSC with K3Co(CN)6 additive is over 99.0%, which is higher than 96.7% for the MSC with CKNSe additive and 82.3% for the MSC without an additive. Moreover, the designed MSC with the redox-active K3Co(CN)6 electrolyte exhibits a maximal capacitance retention of 70% after 5000 cycles. Furthermore, the flexible Zn-ion MSC with the Ti3C2Tx MXene cathode and a redox-active electrolyte was used to power a Ti3C2Tx based pressure sensor; the excellent press response of the integrated system not only provides insights into the development of large capacity and long-period stable energy storage devices, but also paves a new way for the development of capacitor-sensor integrated systems.
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Acta Biomaterialia
·
2023
·
IF 9.7
Tao Liao,Zhongyin Chen,Ying Kuang,Zhe Ren,Wenqian Yu,Wen Rao,Linwei Li,Yun Liu,Ziqiang Xu,Bingbing Jiang,Cao Li
As a controllable, simple method with few side effects, near-infrared (NIR) light-based photothermal therapy (PTT) has been proven an effective cancer therapeutic approach. However, PTT-induced inflammation is a potential negative factor. And the overexpressed heat shock proteins (HSPs) by cancer cells can protect them from hyperthermia during PTT. In this work, small-size Ti 3 C 2 T x MXene nanosheets with high photothermal conversion efficiency in the region of NIR, high cargo loading capability and good free radical scavenging capability were chosen for cancer PTT and anti-inflammation. And (-)-epigallocatechin gallate (EGCG) was applied to form EGCG/Fe metal-polyphenol nanodots on the nanosheets. EGCG being released in acid cancer cells could reduce the expression of HSPs and could be used for anti-inflammation. As a result, the complex nanosheets named MXene@EGCG could achieve enhanced cancer PTT and be anti-inflammatory. Both in vitro and in vivo studies proved the good photothermal ability of MXene@EGCG and demonstrated that it could inhibit the expression of HSPs in tumor cells and relieve PTT-induced inflammation. Therefore, the nanosheets show good results in tumor ablation with a low level of inflammation, which provides another possibility for cancer therapy. Statement of significance Photothermal therapy (PTT)-induced inflammation plays an essential role in some important stages of tumor development and is unfavorable for cancer treatment. And hyperthermia leads to the overexpression of heat shock proteins (HSPs) in cancer cells, which limits the therapeutic effect of PTT. Therefore, we coated small-size Ti 3 C 2 T x MXene nanosheets with (-)-epigallocatechin gallate (EGCG)/Fe metal-polyphenol nanodots and named them as MXene@EGCG. This system shows a good photothermal conversion efficiency at 808 nm. And it can release EGCG in cancer cells to inhibit the expression of HSPs, thus achieving an enhanced cancer PTT. Both MXene and EGCG can also diminish the PTT-trigged inflammation. Both in vitro and in vivo studies prove the good anti-cancer PTT effect and anti-inflammation capability of MXene@EGCG.
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