ACS Omega
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2026
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IF 5.2
Yili Li,Jinxin Fang,Xinyi Du,Liqiang Deng,Xiaoya Mo,Haijun Huang,Weiguo Cao
Herbal medicines are particularly vulnerable to contamination by polycyclic aromatic hydrocarbons (PAHs) due to their relatively long growth cycles and multistep processing. This contamination may compromise the efficacy and safety of the prepared herbal slices. The current work innovatively synthesized a hierarchical composite of MXene@Cu-BTC/PPy carbon with MWCNTs@MoS2 (MCuP350/MWCNTs@MoS2) through a sequential in situ growth approach. The material was characterized by using Field Emission Scanning Electron Microscopy (FE-SEM), High-Resolution Transmission Electron Microscopy (HR-TEM), X-ray Photoelectron Spectroscopy (XPS), X-ray Diffraction (XRD), and Fourier Transform Infrared Spectroscopy (FT-IR) techniques. The electrochemical sensor was prepared based on the MCuP350/MWCNTs@MoS2 composite, which exhibited excellent electrocatalytic activity, displaying good linear responses to both anthracene (ANT) and phenanthrene (PHE). The detection limits of the presented sensor were 0.604 μM (ANT) and 0.240 μM (PHE), respectively. In commonly used herbal medicine of licorice, the effectiveness of the developed sensor for detecting ANT and PHE was validated by the standard addition method, with satisfactory recoveries of 100.36%–104.75% and 97.43%–104.44%, respectively. Additionally, the sensor exhibits high selectivity against the potential interfering substances existing in licorice. These results confirm the feasibility of directly detecting PAHs in licorice via the developed sensor without the need for complex sample pretreatment.
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
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IF 5.1
Weiheng Kong,Boyuan Chen,Haoyu Mi,Ke Han,Hansheng Liu,Jing Fang,Hao Li,Xingjiang Wu
Constructing advanced structural fiber with high energy density is pivotal for wearable power-supply application of fiber-based supercapacitors (FSCs), but it usually sacrifices the mechanical property. Herein, we develop ultra-strong MXene-aramid nanofibers@polypyrrole core–shell (MXene-ANFs@PPy) fiber in large scale via microfluidic spinning strategy, where ANFs can provide abundant hydrogen-bond networks between MXene nanosheets, and in-situ interfacial coupling of PPy on MXene-ANFs fiber can ensure interconnected porous channels and sufficient active sites. Therefore, the MXene-ANFs@PPy fiber maintains large mechanical property (strength: 168 MPa, strain: 1.7%), straightway ions diffusion dynamics and luxuriant faradaic charge accumulation. Accordingly, the MXene-ANFs@PPy fiber delivers high specific capacitance of 1487 F cm - 3 and good rate performance (1006 F cm - 3 at 10 A cm - 3 ) in 1 M H 2 SO 4 . The MXene-ANFs@PPy based solid-state FSCs exhibit high energy density of 9.54 mWh cm −3 , long-term cycling stability (92% initial capacitance after 10,000 cycles) and outstanding bending stability, which can be woven into clothes to achieve wearable self-powered prototype. Our work offers a novel strategy for large-scale construction of high-performance fiber electrode and accelerates the progress of wearable electronics.
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DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2026
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IF 5.1
He Liu,Zixu He,Chenbo Gong,Runyi Han,Zichen Qi,Lin Shi,Zhaohong Song,Fan Wang,Dong Wen,Zhaopeng Xu
To address the lack of non-invasive real-time monitoring of hand motor symptoms in Parkinson’s disease, this study proposes a flexible piezoelectric sensor that detects electrical signal responses generated under different finger bending angles and frequencies, which can be used to monitor and evaluate finger motor function and rehabilitation training in patients with Parkinson’s disease. Moreover, the sensor maintains stable output over seven days and exhibits good biocompatibility. A doping strategy employing polypyrrole-coated BaTiO 3 (PPy@BT) nanoparticles is used to significantly enhance the piezoelectric performance of poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) nanofiber sensors. PVDF-TrFE/PPy@BT composite nanofiber membranes are prepared by electrospinning and assembled into a flexible piezoelectric nanogenerator (PENG). The microstructure, dielectric properties, mechanical, and piezoelectric performance of the composite are systematically characterized. Experimental results demonstrate that, under optimal doping conditions, the PENG exhibits an open-circuit voltage of 13.64 V, which corresponds to approximately 455% of the value of the undoped PVDF-TrFE membrane. Furthermore, the device maintains a stable output over 3000 cyclic loadings. The device achieves a maximum sensitivity of 39.34 V·kPa⁻ 1 in the low-pressure region (0–1 kPa) and delivers a peak power density of 0.32 W·m⁻ 2 at a load resistance of 10 8 Ω, demonstrating its excellent energy conversion efficiency.
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高影响因子
ACS Applied Energy Materials
·
2025
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IF 5.5
Jiahui Li,Yali Wang,Xiaoxuan Fan,Yazhou Zhang,Jia-Horng Lin,Ting-Ting Li,Ching-Wen Lou
Wearable thermoelectric generators (TEGs) rely on significant thermal gradients. They are susceptible to ambient conditions, including temperature and humidity, which compromise their longevity, wearability, and breathability, thereby limiting their utility in human microenvironments. This study introduced a layer-by-layer assembled photothermoelectric fabric comprising poly(3,4-ethylenedioxythiophene)/carbon nanotubes/polypyrrole (PEDOT/CNT/PPy), engineered for self-powered electricity generation through the capture and conversion of environmental solar and thermal energy. Poly(3,4-ethylenedioxythiophene) was deposited on the fabric via low-temperature interfacial polymerization, incorporating carbon nanotubes to establish an organic/inorganic hybrid system, thereby enhancing the composite material’s overall thermoelectric performance. Subsequently, to enhance the thermal-to-electric conversion of the PEDOT/CNT thermoelectric fabric, it was integrated with polypyrrole, which exhibited superior photothermal conversion properties, constructing an organic/inorganic photothermoelectric fabric with a core–shell architecture to achieve an integrated light-to-heat, heat-to-electricity composite conversion. The PEDOT/CNT/PPy flexible photothermoelectric fabric achieved a maximum output voltage of 612.52 μV under infrared light irradiation and an output voltage of 270 μV under a temperature differential of 20 °C. Furthermore, a thermoelectric device assembled from three PEDOT/CNT/PPy strip fabrics affixed to the human arm generated an output voltage of 300 μV at room temperature. Consequently, the developed flexible photothermoelectric conversion fabric demonstrates potential for significant applications in innovative wearable technology and the sustainable energy sector.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Guanting Li,Xianze Meng,Yangmin Wu,Wenjie Zhao
Ti 3 C 2 T x nanosheets, which can act as effective physical barrier against corrosion species, have emerged as promising corrosion-resistant reinforcements in organic coatings due to abundant surface functional groups. However, relying solely on Ti 3 C 2 T x for passive protection does not adequately meet higher corrosion protection requirements, especially under high hydrostatic pressure environment in the deep sea. Herein, we synthesized Ti 3 C 2 T x @PPy-MoO 4 (MPMo) hybrid through in-situ oxidative polymerization strategy, which endowed epoxy coating with collaborative protection of passive physical barrier and active corrosion-inhibition. MPMo enhanced epoxy coating (MPMo/EP) exhibited superior anti-corrosion durability in simulated 60 MPa deep sea environment, maintaining a |Z| f=0.01 Hz value above 10 8 Ω·cm 2 and outperforming Ti 3 C 2 T x -based coatings by three orders of magnitude even after six cycles of AHP test. Moreover, polypyrrole (PPy) significantly improved the structural stability of Ti 3 C 2 T x , and successfully loaded with MoO 4 2− through anion doping. Meanwhile, Raman mapping analysis also revealed that MoO 4 2− anions adsorbed onto the Q235 steel surface and formed Fe 2 (MoO 4 ) 3 protective layers, which significantly hindered the generation of corrosion products. This work achieves active-passive synergistic protection of coatings through in-situ oxidation polymerization, providing a new approach for constructing robust anti-corrosion coatings suitable for higher protection demand in deep sea environment.
研究领域:
材料科学
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腐蚀工程
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纳米技术
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聚合物涂层
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海洋工程
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DOI
高影响因子
Surfaces and Interfaces
·
2024
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IF 5.7
Shun Lu,Chaohu Xiao,Min Yin,Yang Jin,Shuqin Xu,Qi-Meige Hasi,Yuhan Zhang,Lihua Chen
Solar-driven interfacial evaporation (SIE) is a promising fresh water acquisition technology to address the global water resource shortage. Therefore, solar evaporators with efficient photothermal conversion efficiency and multifunctional purification capabilities are still in high demand. At present, a variety of photothermal conversion materials have been explored, however, there are few studies on integrating interfacial evaporation and photocatalytic capabilities into one solar steam generation system collaboratively. In this work, a new double-layered solar interfacial evaporator (MXene/PPy-ACA) was fabricated by using polymeric ionic liquid grafted attapulgite (ATP-PIL) as the matrix and modified the upper surface by MXene and polypyrrole (PPy). The evaporator can not only carry out seawater desalination efficiently, but also has good photocatalytic degradation effect on organic dyes. The MXene/PPy-ACA achieves an evaporation rate of 1.53 kg m −2 h −1 and corresponding to an efficiency of 92.17 % under irradiation of 1 sun. In addition, duing to the ionic repulsion effect of ATP-PIL, the MXene/PPy-ACA possesses good salt resistance. When tested in 20 wt% high brine, the evaporation rate is measured to be 1.40 kg m −2 h −1 . Moreover, owing to the superb photocatalytic properties of MXene and PPy, the MXene/PPy-ACA exhibits remarkable photocatalytic efficiency towards organic dyes, achieving degradation rates of 94.9 %, 67.49 %, and 65.11 % for methyl orange (MO), rhodamine B (RhB), and methylene blue (MB), respectively. The prepared interfacial evaporation system can also run stably in acid and alkali solution, and has a good practical application prospect. This study may offer an alternative approach in achieving clean water via SIE of seawater and complex wastewater.
研究领域:
材料科学
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环境科学
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能源科学
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高影响因子
Journal of Materials Chemistry C
·
2025
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IF 5.1
Xiuping Li,Te Hu,Na Li,Zhihuan Weng,Lishuai Zong,Siyuan Dong,Xiaolin Zhang,Cheng Liu
The challenge in environmental pollution urgently demands sustainable and green materials as new material candidates for electrochemical sensors. In this study, bamboo derived from abundant and renewable resources is considered as a functional and sustainable substrate material for electrochemical sensor. Novel bn-Ag@PPy/BC electrochemical sensor is prepared by in-situ polymerization of polypyrrole (PPy) on bamboo chips (PPy/BC) then electrochemical deposition of dendric nano Ag on PPy/BC. Various structural characterizations of bn-Ag@PPy/BC indicate that bamboo chips are encased by PPy and dendric nano Ag were homogeneously distributed on the PPy/BC. The bn-Ag@PPy/BC shows high sensitivity as 205 μA mM−1 cm−2 with good linearity in the formaldehyde concentration range of 0-4.5 mmol/L. Meanwhile, bn-Ag@PPy/BC presents high selectivity and excellent reproducibility (RSD=3.66%). Moreover, bn-Ag@PPy/BC exhibits excellent degradation properties with weight residual of 83.66% during 57 days’ degradation in soil, which is much better than some degradable materials. The bn-Ag@PPy/BC will be a promising candidate for cost effective, degradable, sustainable and environmentally friendly electrochemical sensor.
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高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2024
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IF 6.3
Fei Wang,Yuliang Zhang,Mengyang Cong,Ting Shu,Ying Qin,Yanhua Lei,Miranda Liu,Xiaobo Chen,Yi Lin,Zecheng Qian
The continual optimization and advancement of solar desalination technology represent an ongoing focal point in addressing the persistent challenge of freshwater scarcity. In the solar evaporator , subjected to high concentrations of saltwater and intense solar irradiation , as well as other demanding operational conditions, the presence of salt accumulation at the photothermal interface inevitably diminishes both the evaporation efficiency and the service life of the photothermal evaporator. In this study, we have successfully coated polypyrrole with carbon nanopowder (C), iron nanopowder (Fe), boron nitride (BN), boron carbide (B 4 C), molybdenum disulphide (MoS 2 ), and molybdenum carbide (Mo 2 C) through in-situ polymerization, and have assembled these coated materials with blends of polyvinyl alcohol/poly (vinylidene fluoride), creating an innovative amphiphilic photothermal composite film . The resulting thin-film evaporator has achieved an impressive 94.7 % evaporation efficiency under 1 sun irradiation. Introducing perforations on the film evaporator's surface further improves efficiency, reaching approximately 87.0 % under prolonged exposure to high salinity (20 %) conditions. This improvement is attributed to the increased water pathway facilitated by the perforations, preventing salt particle deposition on the evaporator's surface and significantly enhancing desalination efficiency.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
ACS Applied Electronic Materials
·
2024
·
IF 4.3
Zhihua Zhao,Yao Wang,Bo Li,Pu Chen,Guixin Jin,Xiaoqing Shen,Zhigang Shao,Lan Wu
With the rapid advancement of wearable technology, multifunctional sensors have garnered significant attention due to their potential applications in environmental monitoring, health diagnostics, and human−machine interaction. Despite their promise, challenges, such as limited flexibility, insufficient sensitivity, and complex production processes, have hindered their practical deployment. This study presents the fabrication of a multifunctional flexible sensor based on PU-supported Ti3C2Tx/TiO2/PPy yarns for both ammonia (NH3) gas sensing and human motion detection. Key innovations include the incorporation of polypyrrole (PPy) into the Ti3C2Tx MXene structure and the optimization of titanium dioxide (TiO2) content through varying hydrothermal times, which significantly enhance the gas sensing performance. The sensor demonstrates exceptional sensitivity and selectivity toward NH3, with a rapid response and recovery times. Additionally, the PU-supported composite yarns exhibit excellent mechanical flexibility and durability, maintaining stable performance under repeated stretching and bending cycles. In human motion detection, the sensor shows high sensitivity and reliable performance in monitoring various physical activities, making it highly suitable for applications in wearable electronics. These features ensure the sensor’s applicability in diverse settings, promoting safety and health in environments with potential ammonia exposure and enhancing human−machine interactions through accurate motion monitoring.
研究领域:
材料科学
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传感技术
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环境监测
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可穿戴设备
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2023
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IF 6.6
Peng He,Maolin Zhang,Saijing Wang,Limin Yuwen,Yuan Wang,Yangxi Yan,Dongyan Zhang,Xiaofei Sun
Co-free and Ni-rich LiNi 0.95 Mn 0.05 O 2 (NM95) cathodes are expected to be widely employed in power batteries due to their high capacity and low cost. However, the loss of Co and increase in Ni compromise cyclic stability and high-rate performance. Herein, PPy coating layer with excellent flexibility and conductivity is introduced on NM95 surface to enhance the structural stability and charge transfer properties. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray spectroscopy, electrochemical impedance spectroscopy and cyclic voltammetry are utilized to elaborate on positive influence of PPy on electrochemical performance. PPy coating alleviates volumetric changes of cathode caused by charge/discharge process, suppressing mechanical fragmentation. Moreover, PPy provides protective layer to suppress side reactions and isolate the corrosion of electrolytes. Besides, PPy is widely recognized excellent electronic conductor that can promote electronic conduction. It is revealed that PPy-coated NM95 cathode exhibits excellent capacity retention of 90.1 % (4.3 V) and 84.4 % (4.5 V) after 100 charge/discharge cycles at 1 C. Moreover, capacity retention is 91.1 % after 100 cycles and initial capacity is as high as 153.4 mAh/g at 5 C. These results indicate that flexible and electronically conductive coating is effective strategy to enhance cyclic stability of NM95 cathodes.
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高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Shihao Wang,Xinling Yu,Nian Li,Shudong Zhang,Cui Liu,Min Xi,Obaid Iqbal,Sarmad Ali,Zhenyang Wang
Constructing a reasonable electrode structure to achieve high energy density , long cycle life, and excellent rate performance for supercapacitors through simple and mild preparation methods remains challenging. In this work, the hierarchical porous polypyrrole (PPy) with high pseudocapacitive activity and sufficient electrolyte ion transport channels is uniformly coated on carbon cloth (CC) fibers by an electrochemical deposition method with the help of nano-silica as the self-sacrificing template to construct the CC@PPy composite with an improved surface area and porosity. By optimizing the loading and porosity of the electroactive material through electrodeposition time, the specific capacitance of the CC@PPy electrode reached an impressive value of 670.2 F g −1 . The as-fabricated asymmetric solid-state supercapacitor (ASSC) built with the optimized 3D porous CC@PPy electrode exhibited a specific capacitance of up to 142.5 F g −1 at 1.0 A g −1 , superior rate capability, and outstanding cyclic stability (capacitance retention up to 90.3 % after 10,000 cycles). Furthermore, the ASSC achieved a high energy density of 64.1 Wh kg −1 at a power density of 900.0 W kg −1 . These results offer valuable guidance for the design and preparation of high-performance flexible electric energy storage devices.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Jie Mei,Guangya Hou,Huibin Zhang,Qiang Chen,Huazhen Cao,Yiping Tang,Jianli Zhang,Guoqu Zheng
In multifunctional catalysts, Ni-based alloys and compounds can be used for methanol oxidation reaction (MOR) and urea oxidation reaction (UOR). Herein, the porous dendritic NiCu@PPy/316L stainless steel mesh (SSM) electrode is prepared by dynamic hydrogen bubble template electrodeposition, followed by cyclic voltammetry electrodeposition of polypyrrole (PPy) conductive polymer on the electrode surface. Among them, dynamic hydrogen bubbles successfully assisted the formation of porous structures in the Ni-based deposition layer. In addition, the morphology of the resulting Ni-based layer further evolves from particle stacking to dendritic with high specific surface area with Cu doping. Eventually, 2-NiCu/SSM achieves current densities of 294.5 mA·cm −2 (MOR) and 278.6 mA·cm −2 (UOR) at 0.8 V, respectively. The PPy coating prevents the agglomeration of NiCu particles in the catalytic layer and further improves the persistence of the electrochemical performance. After 2000 cycles, the current densities of 2-NiCu @PPy/SSM in the new electrolyte are maintained at 89.1% (MOR) and 94.8% (UOR) of the original value, with a 10% increase for MOR and a 7% increase for UOR compared to the sample without PPy coating (2-NiCu /SSM).
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高影响因子
危险品化学品经营许可证（带存储）