JOURNAL OF ELECTRONIC MATERIALS
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2025
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IF 2.5
Zhu Xingwei,Cheng Yongchao,Gu Xiuquan
A flexible temperature and humidity sensor has been developed based on a composite of polyvinylidene fluoride (PVDF) and thermoplastic polyurethane (TPU). The sensor performance was optimized by introducing graphene quantum dots (NGQDs) and ionic liquids (TFSI) into the polymer composite. This type of humidity sensors has high sensitivity, fast response, and excellent stability, making it suitable for use in wearable health monitoring. The addition of TPU into PVDF facilitates the formation of a porous structure which has both a large specific surface area and high hydrophilicity. After optimizing the PVDF/TPU mass ratio to 5:3, such a humidity sensor displays 1.46 times higher sensitivity than that of pure PVDF film, with a linear response range of 10–90% relative humidity. The response time and recovery time are 7.67 s and 6.37 s, respectively. Owing to the improved hydrophobicity, the sensors also exhibit a good stability in a high humidity environment for > 10 days without significant degradation. Moreover, such a composite also has the capability to distinguish normal breathing from rapid breathing, demonstrating its potential in wearable health monitoring.
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Junyuan Shi,Zihang Yin,Dejin Lin,Dingfeng Wang,Siting Peng,Wendi Xiao,Houwen Hu,Jiong Cheng,Da Chen
The pervasive issue of pharmaceutical overuse in agriculture and veterinary practice has led to the alarming accumulation of drug residues within the global food supply chain, posing a direct and escalating threat to consumer safety. Among these contaminants, compounds such as chlorogenic acid (CGA) and tinidazole (TNZ) are of particular concern due to their potential to provoke allergic responses and cause long-term adverse health effects. There is an urgent need for the development of rapid and reliable detection techniques capable of on-site monitoring to effectively mitigate these risks and ensure food safety. Herein, our work develops an innovative ratiometric sensing strategy that utilizes the dual-excitation properties of nitrogen-doped carbon dots (N-CDs) to simultaneously detect CGA and TNZ. Remarkably, as a fluorescent nanoprobe, N-CDs are capable of detecting CGA over a concentration range of 0.036-40 μM with a limit of detection (LOD) of 36 nM, which is attributed to static quenching (SQE) and the inner filter effect (IFE). Differently, the addition of TNZ results in fluorescence quenching of N-CDs via localization of inner filter effect (L-IFE), presenting the LOD of 68 nM within the 0.068-25 μM range. Furthermore, a portable smartphone-assisted platform which incorporates the N-CDs/PVA composite film successfully enables visual detection of CGA and TNZ with satisfactory recoveries in real samples. These results suggest that the developed portable smartphone-assisted fluorescence platform enables accurate dual-target detection of CGA and TNZ while offering outstanding stability and reproducibility suitable for on-site applications. Consequently, our methodology presents a versatile and practical strategy for real-time pharmaceutical residue screening, significantly advancing food safety monitoring capabilities.
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ADVANCED FUNCTIONAL MATERIALS
·
2026
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IF 19.9
Yanyan Zhang,Wangyang Li,Zhichao Hou,Junrong Jiao,Xun Kang,Chengyu Wei,Qianfeng Xia,Yong Zhao,Xiaobing Wang
Transition metal chalcogenides have been considered as one kind of the most potential candidate catalysts for oxygen evolution reaction (OER). However, the inevitable sulfur loss during reconstruction process destructs the chemical and electronic structure of catalysts. Herein, we proposed directional metal element migration to fix sulfur on near-surface region, and evaluated the effect of lattice oxygen compensation on the stability of surface sulfur. Besides, an ‘etching-compensation factor’ of lattice oxygen is defined as a descriptor on the OER stability with coupled O─O as the key intermediates. It is found that the migration of Fe and S in opposite directions enables high voltage-dependent reversibility of Ni─O─Fe units during OER for self-healing of electrode. The further produced full gradient NiFe-sulfide electrode can stably work for more than 50 000 CV cycles at the scan rate of 50 mV s −1 , and 800 h of chronopotentiometric at current density of 100 mA cm −2 .
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Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2026
·
IF 4.6
Feng Tong,Yi Zhu,Xiuquan Gu,Zheng Chen
Perovskite nanocrystals (PNCs) are promising luminescent materials for display applications owing to their exceptional optoelectronic characteristics. Nevertheless, their practical deployment is hindered by intrinsic high defect densities, which lead to insufficient photoluminescence quantum yields (PLQYs) and accelerated material degradation. In this study, a one-pot strategy was proposed by using nitrogen-doped graphene quantum dots (NGQDs) as surface ligands. Coupled with a polymethyl methacrylate (PMMA) coating, the NGQDs facilitate the formation of a robust composite architecture. Under optimized NGQD incorporation, the fabricated CsPbBr 3 /NGQDs/PMMA composite films display an ultra-narrow green emission peaked at 522 nm, with a full width at half maximum (FWHM) as narrow as 16 nm. More importantly, the composite exhibits significantly enhanced stability, maintaining 70% of its initial PL intensity after 7 days of water immersion or 1 h of thermal treatment at 100 °C. Such improvements are ascribed to effective defect passivation by the NGQDs and the beneficial role of their nitrogen-rich sites in promoting perovskite crystallization. As a demonstration of their potential, white light-emitting diodes (WLEDs) based on the composite realize a wide color gamut, covering 131% of the NTSC standard and 98% of the Rec. 2020 standard. This work thus proposes a novel one-pot in situ passivation approach, providing an effective route to concurrently address the efficiency and stability issues of PNCs.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 7
·118142
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IF 6.2
Mengwen Zhang,Fanyu Meng,Na Cao,Lei Fan,Shoulei Yang
High-performance Al₂O₃-Ti(C,N) composites are critical for extreme-environment applications, yet conventional static sintering cannot simultaneously achieve full densification and strong grain-boundary bonding. Here, a dynamic sinter forging (DSF) strategy coupling sintering densification and oscillatory forging deformation was developed to activate plastic flow and defect engineering. Composites were sintered at 1600 °C with oscillatory amplitudes of 0–40 MPa (5 Hz) and a maximum pressure of 80 MPa. The flexural strength increased from 583 MPa under a pressure of 80 ± 0 MPa to 1070 MPa under 40 ± 40 MPa, representing an 83 % enhancement. TEM revealed increased dislocation densities in Al₂O₃ (2.6 ×10⁵→2.9 ×10⁶ cm⁻²) and Ti(C,N) (4.8 ×10⁶→8.2 ×10⁶ cm⁻²) and curved interfaces, shifting fracture from intergranular to transgranular, showing that defect generation and interface curvature jointly strengthen the composites. This DSF route enables concurrent densification and microstructural strengthening within a single thermal cycle, offering a general pathway to high-toughness oxide–carbonitride ceramics.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xin Wang,Yao Luo,Chen Zhang,Xin Li,Qi Li,Jianliang Xie
To meet the need for ultrathin high-temperature radar-stealth coatings with effective X-band absorption, a metasurface-regulated FeSiCr/CaO-B 2 O 3 -SiO 2 (FSC/CBS) composite coating was designed. FSC/CBS coatings with different FSC contents were fabricated by atmospheric plasma spraying to examine the effects of absorber loading on particle state, microstructure, electromagnetic parameters, and high-temperature absorption. Increasing FSC content raised the in-flight particle temperature and promoted FSC spreading and flattening, causing the absorbing phase to evolve from isolated particles to lamellar structures and locally connected conductive networks. These structural features enhanced interfacial polarization and conduction loss, whereas excessive FSC aggregation suppressed the effective magnetic response through demagnetization and skin-effect shielding, degrading impedance matching. The 1-mm-thick 40FSC/CBS coating showed stable Ku-band absorption at 600 °C, with reflection loss below −5 dB over 11.7-18.0 GHz. After metasurface loading, its effective absorption band was regulated to 8.0-13.78 GHz, covering the entire X band, and the cavity radar cross section was reduced by 12.17 dBsm.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Meng Mei,Kaixin Cheng,Yi Zheng,Xinxin Xing,Yude Wang
This study uses In 2 O 3 -ZnO gas sensors for early warning, providing a new pathway for battery safety protection. • The sensor shows high sensitivity to DMC and meets performance requirements for practical early warning scenarios. • The gas sensing mechanism toward DMC provides theoretical support for performance optimization and design of such sensors. • In 2 O 3 -ZnO nanocomposites are highly promising DMC sensing materials, laying the foundation for subsequent device development. During the thermal runaway process of lithium-ion batteries (LIBs), signals such as pressure, gases, and temperature are generated. Traditional pressure and temperature monitoring methods have limited capability to capture localized early-stage signals. Insufficient response time can be provided for thermal runaway early warning. In contrast, gas monitoring provides clear advantages, with gas signals appearing far sooner than temperature and pressure signals at the initial phase of thermal runaway. This paper proposes a gas-sensing detection scheme for dimethyl carbonate (DMC) based on In 2 O 3 -ZnO composite materials. DMC is the primary component of LIBs electrolytes whose release precedes that of H 2 and CO, making it a more suitable early warning marker. ZnO and In 2 O 3 nanosheets were first prepared separately via the hydrothermal method. These were then ground and calcined at high temperatures to form a composite material featuring an n-n heterojunction. Characterization confirms that the heterojunction in this composite material effectively enhances the surface adsorbed oxygen content and carrier density. Gas response testing indicates that the In 2 O 3 -ZnO sensor exhibits a lower operating temperature (160 °C), high response, rapid response, and excellent selectivity toward DMC. By integrating density functional theory (DFT) calculations with in situ Fourier transform infrared spectroscopy (FTIR) analysis, we reveal that the heterojunction enhances gas sensing performance by improving DMC adsorption capacity and charge transfer efficiency. This sensor not only responds rapidly (<15 s) in simulations of electrolyte leakage caused by puncture but also demonstrates excellent early-warning capabilities in thermal runaway experiments induced by overheating and overcharging, proving its broad applicability in complex electrochemical abuse scenarios. Download: Download high-res image (178KB) Download: Download full-size image
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POLYMER BULLETIN
·
2025
·
IF 4
Xue Baoxia,Feng Jiaxin,Zhang Chunyan,An Zhao,Shao Ziyang,Liu Jing,Niu Mei,Zhang Li
As one of the most common medical dressings, imparting effective antibacterial properties to cotton (COT) fabric is a crucial strategy for preventing bacterial infections. To achieve the continuous release of silver ions, a novel one-step hydrothermal approach was developed by integrating reduced graphene oxide (rGO) and silver nanoparticles (AgNPs) into the fabric, resulting in the in situ growth of rGO/Ag aerogel on the surface of the cotton fabric (rGO/Ag/COT), and forming a new type of structured medical antibacterial dressing. Various analytical methods (including SEM, XRD, plate counting method, flow cytometry, and cytotoxicity) were employed to investigate the structure and properties of the rGO/Ag/COT dressing. The results indicated that, the rGO/Ag aerogel has been embedded within COT fabric via ester-based bonding. The rGO/Ag/COT dressing demonstrated a remarkable antimicrobial efficacy of 99.9% against Escherichia coli and Staphylococcus aureus, owned the ability to continuously release silver ions over a period of several days, and generated a significant amount of reactive oxygen species within the bacterial cells. Additionally, the rGO/Ag/COT dressing displayed the in vitro cytotoxicity of grade 1 and excellent biocompatibility. These implied this strategy provides more ideas for the field of medical dressings through the combination of aerogels and textiles.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
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IF 5.2
Shanghao Wu,Jinke Wang,Tong Liu,Xin Guo,Lingwei Ma
In this work, a novel carbon dots based complex with sulfosalicylic acid modification (CDs-SSA) was synthesized, endowing it with both corrosion inhibition and corrosion sensing abilities. The corrosion inhibition behaviors of CDs-SSA for carbon steel in HCl solution were investigated using electrochemical methods, surface characterization and molecular simulation . Compared with CDs, SSA and their mixture, the corrosion inhibition performance of CDs-SSA complex was greatly improved, showing the anodic passivation behavior and much increased impedance modulus. The corrosion inhibition efficiency of CDs-SSA reached the maximum of 99.1% at 200 mg/L after 24 h of immersing the steel in 1 M HCl solution. According to surface analyses results, CDs-SSA provided a superior corrosion inhibition effect via developing a physicochemical adsorption film with hydrophobicity to prevent the attack of corrosive media. Meanwhile, DFT and MD simulations clarified that the CDs-SSA complex with abundant active sites would adsorb on the metal surface in a parallel manner, offering the maximum coverage with highest binding energy. Furthermore, CDs-SSA could visually and sensitively respond to both Fe 2+ and Fe 3+ ions, which illustrated a prominent fluorescence quenching effect upon complexation with iron ions . Such efficient responsiveness of CDs-SSA offers a great opportunity for the real-time visualization of early-stage corrosion process.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Hongxin Xie,Xue Tian,Lina He,Jincheng Li,Liwei Cui,Xin Cong,Bochong Tang,Yi Zhang,Zhiying Guo,Aiyu Zhou,Dongliang Chen,Liming Wang,Jiating Zhao,Yong-Liang Yu,Bai Li,Yu-Feng Li
Cardamine violifolia is a Se hyperaccumulator found in Enshi, China. In this study, spatial metallomics was applied to visualize the distribution and speciation of Se in a single seed of C. violifolia. It was found that Se reached 1729.89 ± 28.14 mg/kg and the main Se species were SeCys and SeMet in bulk seeds. Further in situ study on a single seed found that the methylated Se species located mostly in the episperm. This is the first visualized evidence of the in situ distribution of methylated Se species in the seeds of C. violifolia. In all, spatial metallomics finds a preferable accumulation of methylated Se species in the seed coat, which deepens the understanding of the tolerance of Se by C. violifolia. The protocol applied in this study may also be used for the understanding of the tolerance of heavy metals/metalloids in other hyperaccumulators.
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Advanced Materials Technologies
·
2023
·Vol. 8
·期 8
·2201715
·
IF 6.8
Chenxing Xiang,Huiming Ning,Ning Hu,Lidan Zhang,Rui Zou,Alamusi Li,Feng Liu,Kaiyan Huang,Jie Wen,Shu Wang,Xiaopeng Wu,Zengrui Song,Yaolu Liu,Liangke Wu
Smart adhesion actuators have played an increasingly important role in industrial manufacturing, medical equipment, and other applications of daily life. Inspired by the octopus sucker, a smart bionic adhesion actuator is designed that uses hydrogel-based materials with a photothermal effect to simulate the contraction and relaxation of octopus sucker muscles, enabling it to rapidly grasp and release objects weighing more than 24 times its own weight, while having good cyclic stability. The magnitude of the grasping force can be monitored in real time through an additional sensing structure, which is similar to the nerves of octopus sucker. By sensing and adjusting the state of adsorption, controllable adsorption can be achieved using this self-sensing function, thereby greatly improving energy efficiency. It provides a new direction for the design of smart bionic adhesion actuators with hydrogels.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2022
·Vol. 414
·期 8
·2651-2660
·
IF 4.478
Bu Yiming,Yu Long,Su Pengchen,Wang Lingxiao,Sun Zhenli,Sun Mingtai,Wang Xiangke,Huang Dejian,Wang Suhua
In this work, green-emitting carbon quantum dots were successfully prepared through a facile one-step solid-state reaction method. The obtained green-emitting carbon dots (G-CDs) showed good fluorescence stability in NaCl aqueous solution and different pH values. Moreover, the G-CDs showed high sensitivity and selectivity for detecting hypochlorite by both fluorometry and colorimetry. Under the optimized condition, a highly sensitive detection of hypochlorite was established in the range of 0.2–100 μM and 10–150 μM for fluorescent and colorimetric methods, respectively. The corresponding limits of detection (LOD) were 0.0781 μM and 1.82 μM, respectively. Therefore, the G-CDs were successfully applied to determinate hypochlorite in actual water samples. In addition, a paper-based sensor loading with the G-CDs was also developed for rapid visual detection of hypochlorite. The results suggested that the G-CDs could be a promising candidate to detect hypochlorite. Graphical abstract
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危险品化学品经营许可证（带存储）