APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yifan Tong,Minghao Fang,Chaoqi Liu,Xin Min
As technology continues to advance, multifunctional flexible electronic devices for monitoring human health and managing thermal conditions have garnered considerable attention. Nevertheless, achieving a balance between a wide strain sensing range and high sensitivity remains a considerable challenge. Herein, PDA/PEBA/MWCNTs/rGO (PPMr) sensors were fabricated by vacuum-assisted filtration of ultrasonically mixed multi-walled carbon nanotubes (MWCNTs) and reduced graphene oxide (rGO) loaded on polydopamine-modified PEBA nanofiber membranes. This sensor has a broad range of strain detection capabilities (0–127 % strain), high sensitivity (GF = 42), response/recovery times of 600/500 ms, and over 8000 cycles of stability. At the same time, this sensor also exhibits outstanding photothermal conversion capability (reaching 75.6 °C at 100 mW/cm 2 ), electrothermal conversion capability (up to 82.2 °C at 8 V), and excellent photothermal/electrothermal synergistic conversion capability (reaching 78.9 °C at 100 mW/cm 2 and 4 V). This strain sensor is noteworthy for its outstanding performance, as it can detect body movements across a wide range of strain, such as elbow joint movements, as well as subtle physiological signals like pulse waves. This capability highlights its significant potential for applications in human health monitoring and thermal management.
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Xiangyu Wang,Yubing Sun,Qiang Wang,Lijun Tang,Hui Wang,Tiansheng Mu,Yongchao Zhang,Xiaodong Zhu,Jian Gao
Three-dimensional (3D) carbon materials are often used as carriers for anchoring iodine in zinc-iodine batteries (ZIBs). However, the physical stacking of carbon materials during the electrode assembly process, the weaker physical interactions between non-polar carbon materials and iodine species, and the scarcity of catalytic sites for iodine conversion led to a reduced catalytic activity for the iodine redox reaction, which fails to completely inhibit the shuttling of iodine species. Here, 3D ultrafine Cu-anchored CNT-rGO carriers (3D Cu@CNT-rGO) with interconnected structures are prepared using a simple laser-induced reduction strategy. The 3D microporous structure and excellent electrical conductivity of 3D Cu@CNT-rGO make it an ideal host for iodine. Ultrafine Cu nanoparticles introduce as catalysts accelerate the redox kinetics, efficiently catalyze iodine/polyiodide conversion, inhibit polyiodide shuttling, and enhance the electrochemical performance of ZIBs. The fabricated zinc-iodide micro-batteries (ZIMBs) delivers a high specific area capacity of 1.29 mAh cm −2 , a high area energy density (1.55 mWh cm −2 ) and a high area power density (33.58 mW cm −2 ) as well as excellent cyclin stability (80% capacity retention after 4000 cycles). Meanwhile, ZIMBs have excellent mechanical flexibility and have great potential for application in the field of integrated, miniaturized and flexible electronic devices.
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Advanced Materials Interfaces
·
2024
·
IF 4.3
Xiaoju Yue,Lin Han,Shifeng Wang,Linan Dun,Jinnong Wang,Yuanhao Wang,Chun Du
Degradation of organic pollutants in wastewater is crucial for global environmental health. Semiconductor-based photocatalytic technologies have received widespread attention due to their ability to directly utilize solar energy, produce no secondary pollution, and offer long-lasting functionality. However, current photocatalyst preparation technologies face issues such as complex manufacturing processes, low efficiency, and the need for various additives. Therefore, this work proposes a simple and eco-friendly method to in-situ growth of reduced graphene oxide (rGO) onto magnesium oxide (MgO), forming a MgO@rGO core-shell structured photocatalyst through CO 2 thermal reaction process. After systematic study, the incorporation of rGO onto MgO core greatly extends the light absorption range from ultraviolet (UV) to visible wavelength, enabling substantially enhanced light capture and photoexcited carriers. Additionally, the core-shell heterojunction with a built-in electric field at the interface between MgO and rGO facilitates distinctly the separation and migration of the photogenerated charges. This structure-induced synergistic effect boosts the photocatalytic performance of MgO@rGO by a factor of 1.7, 4.1, 41.8, and 6.4, compared with MgO (stripped), MgO (pure), rGO, and commercially used TiO 2 , respectively. This work provides a simple and effective strategy for designing advanced functional nanocomposites to address environmental problems.
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高影响因子
DALTON TRANSACTIONS
·
2024
·Vol. 53
·期 46
·18688-18697
·
IF 3.5
Xiaolong Lu,Yan Zhou,Cancan Li,Qi Wang,Bijun Fang,Yi Shi,Ningyi Yuan,Jianning Ding
Two-dimensional (2D) transition-metal carbide Ti3C2TX (MXene) possesses good electrical conductivity, high specific surface areas and metal oxide-like surfaces, which make it ideal for application in supercapacitors with both high energy density and power density. However, similar to other 2D materials, the issue of self-stacking leads to narrower ion-transport channels, along with a drastic reduction in active sites, thus severely limiting the performance of MXene-based electrodes. To address this problem, this work proposes to introduce one-dimensional (1D) reduced graphene oxide (rGO) nanoribbons as spacers between MXene nanosheets to construct a composite structure for inhibiting self-stacking. As expected, owing to the steric effect and high aspect ratio of rGO nanoribbons, the fabricated MXene/rGO hybrid electrode, with the addition of 5 wt% graphene oxide (GO), exhibits a greatly improved specific capacitance (397.4 F g−1 at 5 mV s−1) and an unparalleled rate capability (with a capacitance retention of 52.9% at 2000 mV s−1). This work sheds significant light on the development of MXene-based materials for advanced energy storage devices.
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PubMed
高影响因子
CARBON
·
2024
·
IF 10.5
Yuan Guo,Yuping Duan,Xiaoji Liu,Jie Tian,Ningxuan Wen,Zeng Fan,Lujun Pan
Graphene aerogels have attracted increasing attention in electromagnetic wave (EMW) absorption due to their ultra-low density and excellent dielectric performance. However, pure graphene aerogels have limited loss mechanisms, and it remains a challenge to introduce multiple loss mechanisms while maintaining lightweight. Here, reduced graphene oxide/metal organic framework (MOF)-derived carbon nanotubes (rGO/MD@CNTs) aerogels are successfully constructed by uniformly compositing GO and MOF particles by hydrothermal treatment and further in-situ growing CNTs by chemical vapour deposition method. GO and MOF particles form strong bonding sites due to their interaction to construct the aerogel with excellent mechanical property, while magnetic loss is also introduced. The MOF-catalyzed CNTs not only contribute to the formation of interface and dipole polarizations, but also effectively regulate the conductivity to improve impedance matching. rGO/MD@CNTs aerogel integrates multiple losses and optimal impedance matching. With a filling ratio of 6 wt%, the aerogel exhibits an excellent reflection loss of −51.6 dB and a wide effective absorption bandwidth of 5.9 GHz. In addition, the aerogel shows good thermal stability and antifreeze properties. Therefore, this work provides an effective strategy for obtaining the aerogel with multiple losses for efficient EMW absorption, demonstrating the potential applications of rGO/MD@CNTs aerogel in complex environments.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Huaiyu Dong,Shuailong Gao,Chen Yu,Zhichen Wang,Haofeng Zhang,Yixing Huang,Tian Zhao,Ying Li
Traditional microwave absorbing materials struggle to balance wideband absorption with mechanical properties, particularly in multifunctional applications. This study explores the effects of short carbon fibers (CF), cerium dioxide (CeO 2 ), and reduced graphene oxide (rGO) on the electromagnetic and mechanical properties of 3D-printed composites. The ABS@CF/CeO 2 /rGO composite with a thickness of 2.2 mm exhibited exceptional microwave absorption, achieving an effective absorption bandwidth (EAB) of 6.6 GHz and a minimum reflection loss (RL min ) of −40.9 dB. The Whale Optimization Algorithm (WOA) was employed to design a load-bearing, microwave-absorbing superstructure, which significantly improved wideband absorption. Experimental results confirmed the superstructure’s isotropy and wide-angle absorption capabilities. The calculated electromagnetic parameters were applied to evaluate the radar cross-section (RCS) of large targets, demonstrating enhanced stealth performance for unmanned aerial vehicles (UAVs). Mechanical tests revealed that rGO improved interlayer bonding strength, while CF negatively impacted bending performance. The superstructure also showed excellent mechanical stability in load-bearing tests, underscoring its potential for practical engineering applications. This study offers insights into designing advanced composite materials with balanced electromagnetic and mechanical properties, guiding future multifunctional material development.
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高影响因子
Environmental Science-Nano
·
2024
·Vol. 11
·期 7
·3104-3113
·
IF 5.8
Feijin Zhou,Wenying Cui,Chenggang Liu,Cheng Yao,Chan Song
Exploring novel nanozymes with high activity and stability is necessary in sensing to replace some natural enzymes. Here, iron phthalocyanine (FePc) was supported on two-dimensional (2D) reduced graphene oxide (rGO), synthesizing FePc@rGO nanocomposites by a one-pot method. FePc@rGO nanocomposites not only can catalyze the oxidation of colorimetric substrates, but also can degrade rhodamine B (RhB) with the help of permonosulfate (PMS). With the introduction of rGO, FePc was loaded on their surfaces. Compared with free FePc, FePc supported on rGO has smaller size, resulting in its larger specific surface area. These factors are better for exposing the active sites of catalysts and increasing the mass transfer rate between catalysts and substrates. Therefore, FePc@rGO nanocomposites exhibit enhanced catalytic activity. Based on the oxidase-like activity of FePc@rGO nanocomposites, a sensing platform was constructed for the detection of thiosulfate (S2O32−) with a detection limit of 0.124 μM and a detection range of 2–50 μM. In addition, this sensing system can be used for the visual detection of S2O32− by a portable smartphone. Furthermore, the degradation efficiency of FePc@rGO nanocomposites to RhB could be as high as above 94% for just 10 min when the pH ranged from 3 to 10. This work provides an avenue for the synthesis of novel catalysts as multifunctional nanozymes for detection and organic pollutant degradation.
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高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2024
·
IF 6.1
Tao Liu,Chang Jiang,Zekai Liu,Xuehui Zhang,Wenmin Zhao,Longfei Zeng,Lina Zhang
Reduced graphene oxide (rGO) with surface-loaded Cu particles (scCu-rGO) was prepared by supercritical CO 2 deposition, and Cu matrix composites with scCu-rGO as a reinforcement (scCu-rGO/Cu composites) were successfully prepared by ball milling for different times and spark plasma sintering (SPS). The scCu-rGO/Cu composites prepared with a ball milling time of 20 h exhibited high electrical conductivity (96.3 % IACS), tensile strength (240 MPa), and elongation (37 %). The outstanding properties are mainly ascribed to the uniform distribution of rGO by the ball milling process and rGO promoted by loading Cu particles onto its surface through supercritical deposition, which led to an interfacial reaction between rGO and Cu, resulting in the formation of a Cu 2 O transition layer with a load-transferring effect that enhanced the mechanical properties of the composites. Based on the experimental results, the strength of scCu-rGO/Cu composites is mainly enhanced by synergistic strengthening through grain refinement, Orowan looping and load transfer strengthening. This study demonstrates that the use of supercritical deposition to construct Cu 2 O transition layers can result in a strength-plasticity and high electrical conductivity match in scCu-rGO/Cu composites. The findings presented here offer new insights for innovative design of Cu matrix composites for advanced engineering applications by using supercritical deposition.
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高影响因子
Environmental Science-Water Research & Technology
·
2024
·
IF 3.5
Wei Wei,Shiqian Gao,Feiyue Qian,Chongjun Chen,Youyi Wu
Reduced graphene oxide modified CoFe2O4 (CoFe2O4/rGO) magnetic nanoparticles (MNPs) were synthesized by employing an in situ crystallization microwave irradiation method. The morphology and textural properties of CoFe2O4/rGO were characterized using SEM, TEM, BET/BJH and XPS. GO was reduced to rGO via the thermal catalysis of Co(acac)2, which contributed to expanding the effective microwave absorption bandwidth of carbon-based materials. The lattice stability of CoFe2O4 effectively improved Snoek's limit and protected the catalytic active site distribution of CoFe2O4/rGO nanoparticles. The CoFe2O4/rGO composites were selected as a heterogeneous catalyst to initiate the activation of peroxymonosulfate (PMS) for the generation of reactive oxygen species (ROS) and degrade 2-aminobenzothiazole (ABT) in a water sample. Under optimal conditions, the coupling of CoFe2O4/rGO and PMS can completely degrade ABT in aqueous solutions within 90 minutes. The effect of inorganic anions, metal cations and humic acid (HA) on the degradation efficiency of ABT was explored. Experimental results showed that the presence of HA and low concentrations of Cu2+ enhanced the process performance remarkably, while the addition of NO3−, SO42−, Zn2+, Cd2+ and high concentrations of Cu2+ suppressed the degradation of ABT. Meanwhile, the absence of Cl− and HCO3− presented no significant influence on the degradation. Radical quenching experiments indicated that SO4−·, ·OH and non-free radicals of 1O2 were involved in the CoFe2O4/rGO-PMS system, with the former two being the dominating radical species. A degradation efficiency of 100% was obtained when the proposed method was applied to the degradation of ABT in actual water samples. The CoFe2O4/rGO catalyst-activated PMS processes offered a reference to eliminate refractory organics in water.
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高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Qingqing Hu,Yaoqi Huang,Linfeng Li,Yuanyuan Li,Xiaomin Cheng
The slow heat transfer rate, leakage susceptibility, and low photothermal conversion efficiency of the phase change materials (PCMs) may limit their application in thermal energy storage. To tackle this problem, photothermal composites (MoS 2 -rGO) were prepared by hydrothermal synthesis method, and then polyethylene glycol-6000 (PEG-6000) and MoS 2 -rGO composites were encapsulated in polyacrylamide (PAM) by free radical polymerization to form an integrated photothermal storage system. The melting enthalpy (ΔH m ) of the light-thermal phase change gel (LTPCG) was 140.9 J/g and the crystallization enthalpy (ΔH c ) was 134.8 J/g when the PEG-6000 loading reached 85 %. After 300 cycles, the ΔH m and ΔH c were 137.7 and 132.1 J/g, respectively, which were 2.3 % and 2.1 % lower than the initial values, demonstrating excellent thermal storage durability. In addition, under simulated solar irradiation conditions, the MoS 2 -rGO composites were able to capture photons and rapidly transfer phonons with high efficiency, achieving a photothermal conversion efficiency of 87.5 %. The prepared composite PCM has excellent thermal storage and photothermal properties, which are of practical significance for the efficient use of solar energy.
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高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2024
·
IF 4.1
Shuolei Wang,Zhonggui Zhang,Zhao Li,Ziyue Zhang,MD. Zahidul Islam,Xiaojian Jiang,Hongyu Gao,Shi Xu,Yubing Dong
The sensor fabricated from high-molecular polymer is soft, lightweight, and biocompatible; however, traditional high-molecular polymers suffer from viscoelasticity and poor cycle stability. To address these issues, it is essential to develop flexible matrix materials that can overcome viscoelasticity, ensuring high sensitivity and long-term use under large strains for next-generation wearable intelligent devices. In this study, ethylene-vinyl acetate (EVA) with a shape memory effect was utilized as the substrate for a flexible sensor，the shape memory effect of EVA can eliminate the residual strain generated by each long time of use to improve its service life. A polydopamine@reduced graphene oxide (PDA@RGO)/EVA fiber flexible strain sensor was fabricated through melt extrusion, swelling ultrasound, and in-situ polymerization techniques. The resulting sensor exhibits high sensitivity (gauge factor=1801.21), a wide strain detection range (strain = 193 %), and excellent stability and durability (2000 cycles). Notably, the PDA@RGO/EVA fiber flexible strain sensor demonstrates exceptional dual thermal and light repair functions, with light repair achieving a repair speed of 5 seconds, 100 % electrical performance repair efficiency, and perfect consistency in relative resistance response before and after repair. Furthermore, the PDA@RGO/EVA strain sensor can monitor finger and wrist movements in real-time with high accuracy, highlighting its significant potential application in the wearable technology field.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 43
·20268-20282
·
IF 3.5
Qiu Hongfang,Peng Jian,Xu Weiwei,Fang Xiong,Lu Junyu,Di Xiaochuang,Lu Zhao,Chen Yang,Zou Huawei
The use of microwave absorption (MA) materials in practical aerospace applications would be challenging without a dependable mechanical support structure. However, achieving a wide effective absorption bandwidth (EAB) in aramid honeycomb structures at low weight gain is crucial for the practical aerospace applications of MA materials. To address this challenge, this study proposes a combination of porous carbon foam and high structural strength honeycomb to achieve broadband microwave absorption in structural devices through the synergistic effect of carbon foam absorption and honeycomb structure. The uniform filling process of ultra-lightweight reduced GO aerogel is achieved through freeze-drying, solving the issues of uneven dispersion and incomplete filling of traditional absorbers in honeycombs. Further optimization and comprehensive evaluation of filling concentration and reduction process were carried out. The freeze-drying process combined with chemically reduced honeycomb samples filled with different concentrations of GO all exhibit broadband absorption performance. At a specific standard honeycomb thickness of 15 mm, uniformly filled honeycomb samples with 0.1 to 0.3% GO exhibit triple resonance peaks near 2–3 GHz, 8–9 GHz, and 15 GHz, with effective absorption peaks all below − 10 dB. Moreover, the incorporation of transparent wave honeycomb walls in conjunction with honeycomb materials enhances the overall impedance matching, leading to a further improvement in the EAB to 10.53 GHz for the honeycomb sample filled with 0.2% freeze-dried and reduced GO. CST simulation data confirms that the loss in the honeycomb samples originates from uniform conduction loss, and the electric field stably enters the interior of the honeycomb. This approach, based on the rapid and efficient filling of uniform RGO by freeze-drying, provides a new way to achieve broadband microwave absorption in aramid honeycombs and has significant potential for development in the field of aerospace stealth.
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高影响因子
危险品化学品经营许可证（带存储）