ELECTROANALYSIS
·
2026
·Vol. 38
·期 7
·e70191
·
IF 2.6
Shiyou Yu,Jieyu Song,Xinyu Zhao,Ruiyan Xiang,Chong Tan
In this study, a MoS 2 /polypyrrole (PPy) nanocomposite sensing film was constructed in situ on a glassy carbon electrode (GCE) surface via chemical oxidative polymerization. The synergistic coupling of high-surface-area layered MoS 2 and conductive PPy not only significantly increased the effective electrochemical active area of the electrode but also generated multiple affinity interactions toward chlorpyrifos (CPF) molecules through the edge-active sites of MoS 2 and the π -conjugated structure of PPy, endowing the composite film with prominent adsorption-enrichment capability and excellent selectivity for CPF. Upon enrichment of CPF, the specific interactions between the organophosphate groups and the MoS 2 /PPy interface modulated the electron transfer kinetics of the composite film, producing quantifiable electrochemical signals proportional to the pesticide concentration. Under optimized conditions, the proposed sensor achieved a low detection limit of 1.10 μg/L for CPF and exhibited outstanding anti-interference capability and favorable operational stability in complex agricultural product matrices. Real sample analysis demonstrated that the spiked recoveries ranged from 97.69% to 100.83%, with RSD values of 2.34%–3.53%, verifying the excellent accuracy and reliable analytical performance of the as-prepared material. This work provides a novel nanocomposite sensing material for organophosphorus pesticide residue detection and manifests great application potential in agricultural product quality and safety monitoring.
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Advanced Composites and Hybrid Materials
·
2026
·
IF 21.8
Wei Tiancheng,Xu Li,Cheng Qichao,Cai Jiangfeng,Yu Jing,Wu Qi,Wan Quan,Wang Jie,Xu Zongpu,Shuai Yajun,Yang Mingying
Electromagnetic (EM) shielding fabrics offer a promising solution to the growing issue of EM pollution. There is particularly demand for fabrics applicable in complex environments where comfort, durability, and multifunctionality are essential. In this work, we report the design of multifunctional EM shielding fabric (denoted as Silk-Ppy-PDMS) based on natural silk, which achieves self-cleaning, photothermal antibacterial and efficient EM shielding. By in situ polymerization of hydrophilic polypyrrole (Ppy) onto silk and applying superhydrophobic polydimethylsiloxane (PDMS) coating, we imparted multiple functionalities to the fabric. The needle-like Ppy coating introduces surface roughness favorable for superhydrophobicity, enabling effective self-cleaning. Meanwhile, the same structure enhances light absorption and conversion into heat, contributing to strong photothermal antibacterial. In addition, the fabrics complex surface topography not only facilitates the reflection of X-band EM waves but also leverages the dielectric loss of Ppy to effectively absorb incident radiation. Remarkably, the optimal composite, designated as Silk-P5-P, exhibits Stable WCA (155.5°), peak photothermal temperature (68.5 °C), excellent antibacterial rate (99.95%), superior EM shielding effectiveness (26.3 dB) and exceptional EMI SE per unit thickness (202.31 dB mm⁻¹). Collectively, these features establish the Silk-Ppy-PDMS series (specifically, Silk-P5-P) as a next-generation, wearable EM shielding fabric with robust self-cleaning and antimicrobial, offering considerable potential in advanced multifunctional textile applications. Graphical
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.1
Feifei Liu,Ying Xie,Yuansheng Shan,Jiahui Zhao,Shuo Xue,Wei Zhang,Yan Qin,Tao Liu,Zhenyu Chu,Xiaojun Chen
Sepsis, a life-threatening condition, remains a leading cause of global mortality. It is frequently accompanied by systemic inflammatory response syndrome (SIRS), which triggers excessive release of inflammatory factors and may lead to a cytokine storm. The sensitive detection of procalcitonin (PCT) is therefore critical for early prediction and clinical management of sepsis. In this work, an electrochemical immunosensor was developed based on polyaniline-encapsulated NiCo alloy (NiCo@PANI) nanoflowers for the ultrasensitive detection of PCT. The NiCo alloy ensures rapid electron transfer, and the in-situ polymerization of PANI on the surface of NiCo nanoflowers not only enhances their antioxidant stability but also offers an efficient matrix for antibody immobilization. During the detection process, the specific binding of PCT to the antibody on the electrode surface increases the electron transfer resistance and the steric resistance, resulting in a decrease in current value. By fitting the linear relationship between the attenuated signal and the PCT concentration, the quantitative identification of PCT can be achieved. The fabricated immunosensor achieves ultrasensitive detection of PCT within 20 min, exhibiting a broad linear range from 0.1 pg/mL to 100 ng/mL and a detection limit as low as 0.015 pg/mL. Moreover, it exhibited high selectivity, excellent stability, and satisfactory reproducibility, along with accurate PCT detection in real human serum samples. This work provides a promising platform for ultrasensitive PCT monitoring, with potential applications in early disease diagnosis and point-of-care health assessment.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Ning Sun,Mingwei Gao,Jiawei Liu,Guang Zhao,Fei Ding,Qing You,Caili Dai
With the increasing demand for oil and gas resources, deep tight oil and gas reservoirs have gradually become the focus of global oil and gas exploration and development. Hydraulic fracturing technology based on water-base fracturing fluid plays a more and more important role in improving the recovery of tight oil reservoirs. Under the background of global CO 2 emission reduction, a CO 2 -responsive clean fracturing fluid with controllable gelling/gel breaking at high temperatures was constructed in this paper. The system was not only friendly to the reservoir and environment, but also overcame the shortcomings of the traditional clean fracturing fluid with undesirable temperature resistance. The viscosity characteristics and viscoelastic behavior of temperature-resistant clean fracturing fluid were investigated through high-temperature rheology experiments. The interaction between fluid and rock was investigated through the core flow experiment. The results showed that the clean fracturing fluid had the characteristics of good CO 2 responsiveness, excellent shear resistance at high temperatures, high drag reduction, satisfactory gel breaking performance, low filtration and low core damage. The complex three-dimensional network structure formed by the intertwined micelles and vesicles improves the temperature resistance of the clean fracturing fluid. It is expected that the fluid can not only be used to improve oil recovery in tight oil reservoirs, but also be used to solve the leakage problem in CO 2 storage underground.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiangyu Wang,Mingwei Zhao,Xuhao Wang,Peng Liu,Mengyao Fan,Xiaowei Yan,Zhenfeng Ma,Yanfang Zhang,Caili Dai
Petroleum remains the main source of energy consumption over the past decade. The development of rich unconventional oil reservoirs is a huge challenge. Clean fracturing fluids (CFFs) have gained considerable attention for the unconventional reservoir development, owing to their integrated capabilities of fracturing and oil expulsion. Performance of CFFs is a vital factor in enhancing oil recovery. In this work, a ternary deep eutectic solvent (DES) with dual hydrogen donors (HBDs) was developed as a novel and green medium for improving CFF performance. With the hydrogen-bonding interactions, the ternary DES enable a robust micelle network, thereby strengthening the rheological property, temperature resistance and drag reduction performance of CFFs. The salt resistance performance was improved due to the ion–dipole interaction between HBDs and salt cations, decreasing the interactions between salt cations and surfactants. The DES also increase the imbibition efficiency from 30.7 % in 98 h to 43.7 % in 62 h. Besides, the gel breaking performance and reusability of gel-breaking fluid were enhanced in the presence of DES. The ternary DES showed more effective reinforcement for CFF properties as compared with binary DES, due to the synergistic effect of dual HBDs. This work will provide a promising alternative for intensifying CFF performance.
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Environmental Science-Water Research & Technology
·
2022
·Vol. 9
·期 2
·406-418
·
IF 5.819
Jie Yu,Yunxiao Liu,Han Wang,Qun Yan,Jing Luo
In this study, polyaniline (PANI) and polypyrrole (PPy) coatings were applied to modify iron plate anodes to treat electroplating wastewater by electrocoagulation (EC) treatment. Firstly, FT-IR, SEM and EDX characterization proved the successful coating with PPy–PTS (p-toluene-sulfonate) and PANI–MMT (montmorillonite). Secondly, the electrochemical behavior indicated that PANI–MMT has better corrosion resistance, protective layer, and gas–liquid barrier ability than PPy–PTS. Thirdly, the removal efficiencies of zinc (Zn) and nickel (Ni) within electroplating wastewater reached 98.4% and 80.7% for the PANI–MMT coated anode under optimized EC operating conditions, namely an operating time of 100 min, an initial pH of 7 and a current density of 20 mA cm−2, while those of the PPy–PTS coated anode reached 96.5% and 78% respectively. Moreover, the results indicated that the corrosion inhibition efficiency of the PANI–MMT coated iron plate anode was about 35% even after 10 repeated EC treatment processes, nearly 5% higher than that of the PPy–PTS coated anode. Finally, the negative adsorption energy of the PANI–MMT coated anode reached a minimum of −183.59 kJ mol−1 compared to −169.42 kJ mol−1 for the PPy–PTS coated anode. Therefore, the PANI–MMT modified iron anode could achieve better plate protection and higher heavy metal removal efficiency as well, effectively extending the service life of the iron plate and reducing the operating cost.
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Petroleum Science
·
2023
·
IF 5.6
Ming-Wei Gao,Ming-Shan Zhang,Heng-Yi Du,Ming-Wei Zhao,Cai-Li Dai,Qing You,Shun Liu,Zhe-Hui Jin
The traditional multi-process to enhance tight oil recovery based on fracturing and huff-n-puff has obvious deficiencies, such as low recovery efficiency, rapid production decline, high cost, and complexity, etc. Therefore, a new technology, the so-called fracturing-oil expulsion integration, which does not need flowback after fracturing while making full use of the fracturing energy and gel breaking fluids, are needed to enable efficient exploitation of tight oil. A novel triple-responsive smart fluid based on “pseudo-Gemini” zwitterionic viscoelastic surfactant (VES) consisting of N -erucylamidopropyl- N , N -dimethyl-3-ammonio-2-hydroxy-1-propane-sulfonate (EHSB), N , N , N′ , N′ -tetramethyl-1,3-propanediamine (TMEDA) and sodium p -toluenesulfonate (NaPts), is developed. Then, the rheology of smart fluid is systematically studied at varying conditions (CO 2 , temperature and pressure). Moreover, the mechanism of triple-response is discussed in detail. Finally, a series of fracturing and spontaneous imbibition performances are systematically investigated. The smart fluid shows excellent CO 2 -, thermal-, and pressure-triple responsive behavior. It can meet the technical requirement of tight oil fracturing construction at 140 °C in the presence of 3.5 MPa CO 2 . The gel breaking fluid shows excellent spontaneous imbibition oil expulsion (∼40%), salt resistance (1.2 × 10 4 mg/L Na + ), temperature resistance (140 °C) and aging stability (30 days).
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 19
·1-13
·
IF 2.8
Lan Mingyang,Fan Zhanhui,Yang Chao,Qiu Jianhui,Zang Limin
Flexible energy storage devices have been applied more and more in recent years, such as wearable electronic products, folding mobile phones, and so on. In this study, through the use of waste face mask (WFM) unique three-layer structure, designed a zinc-ion hybrid capacitor (ZHC), the outer layer of WFM through the vapor phase polymerization method on the surface of WFM uniformly covered with a layer of polypyrrole (PPy), to enhance the conductivity of the material and improve the surface topography. The loading of PPy is then increased by electrodeposition and dopants are introduced to further improve its electrochemical properties. It improves the problem that the conductivity of the active material becomes poor with increasing polymerization time and cannot continue to grow so that the electrochemical and mechanical properties of the electrode can be effectively strengthened. The other pole also through the way of electrodeposition on the surface of Zn deposition. ZHC is assembled using ZnSO 4 /gelatin as the electrolyte and WFM inner layer as the separator. The assembled ZHC has excellent electrochemical performance, with a mass-specific capacity of 121.5 mAh g −1 at 0.1 A g −1 and an energy density of 97.6 Wh kg −1 at 0.1 A g −1 . In addition, the capacity retention rate remains 77.1% after 10,000 charge-discharge cycles. The assembled ZHC allows a small fan or digital watch to function properly. These results indicate that the prepared ZHC can be widely used in reality.
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DIAMOND AND RELATED MATERIALS
·
2022
·
IF 3.806
Dawei Xu,Dipan Xuan,Yongchao Liao,Fenqiang Luo,Taiyu Lyu,Minghao Chen,Chaoran Liu,Qian Liu,Zhuang Wang,Shuirong Li,Dechao Wang,Zhifeng Zheng,Lingzheng Bu
In order to obtain high performance, economic and environmentally friendly supercapacitor electrodes, lignin is converted into lignin-based phenolic resin and spun with polyvinyl alcohol (PVA) to obtain lignin-derived carbon membrane (LCM). Then LCM is used as substrate, and α-Fe 2 O 3 /LCM and LCM@ppy-10 composite materials are prepared as positive and negative electrodes, respectively, of supercapacitor electrodes. The results show that the composite electrodes have excellent electrochemical performance . At the current density of 1 mA cm −2 , α-Fe 2 O 3 /LCM and LCM@ppy-10 show a high area specific capacitance of 487 mF cm −2 and 440 mF cm −2 , respectively. The capacitance of the symmetrical button cells assembled by each electrode almost shows stability after 5000 cycles. In different systems, such as asymmetric aqueous supercapacitor and solid-state asymmetric supercapacitor , the composite electrodes also have excellent performance. The voltage of asymmetric supercapacitors is 1.6 V with area specific capacitance of 101 mF cm −2 at 1 mA cm −2 . After 10,000 cycles at 2 mA cm −2 , the specific capacitance decreases by only 5 %. The area specific capacitance and volume specific capacitance of solid-state asymmetric supercapacitor is 89 mF cm −2 and 1.74 F cm −3 , respectively, at 1 mA cm −2 . The maximum energy density and maximum power density of the solid-state asymmetric supercapacitor can reach 0.62 mWh cm −3 and 77.2 mW cm −3 . This method can provide a new reference for the preparation of composite electrode with LCM as current collector.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Du Huang,Zhenya Lu,Xingyue Liu,Junning Gao,Zhiwu Chen,Xin Wang,Xiaoyi Fu
NiCo 2 O 4 nanoflowers with high specific surface area were prepared on nickel foam (NF) by hydrothermal method and used as frameworks for developing cathode and anode of flexible asymmetric supercapacitor. With the unique nanoflower-like NiCo 2 O 4 arrays as skeleton, the NiCo 2 O 4 /Au/MnO 2 cathode was prepared by gold-spraying and electrochemical deposition and the NiCo 2 S 4 /PPy anode was prepared by second-hydrothermal and electro-polymerization. The hierarchical structured electrodes offer sufficient redox sites and adequate channels for accelerating ion and electron transport between electrodes and electrolyte. Moreover, the NiCo 2 S 4 /PPy was first reported as the anode, and its cycling stability (capacitance retention of 86.04 % after 5000 cycles) and specific capacitance (1612.5F/g at 1 A/g). The assembled flexible all-solid-state asymmetric supercapacitor (NiCo 2 O 4 /Au/MnO 2 // NiCo 2 S 4 /PPy) displays a high energy density of 206.37 Wh kg −1 at a power density of 398.57 W kg −1 and an outstanding cyclability (capacitance retention of 83.41 % after 5000 cycles).
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Gels
·
2022
·Vol. 8
·期 10
·600
·
IF 4.432
Peng Liu,Caili Dai,Mingwei Gao,Xiangyu Wang,Shichun Liu,Xiao Jin,Teng Li,Mingwei Zhao
In order to broaden the application of clean fracturing fluid in ultra-high temperature reservoirs, a surfactant gel for high-temperature-resistant clean fracturing fluid was developed with a gemini cationic surfactant as the main agent in this work. As the fracturing fluid, the rheological property, temperature resistance, gel-breaking property, filtration property, shear recovery performance and core damage property of surfactant gel were systematically studied and evaluated. Results showed the viscosity of the system remained at 25.2 mPa·s for 60 min under a shear rate of 170 s−1at 200 °C. The observed core permeability damage rate was only 6.23%, indicating low formation damage after fracturing. Due to micelle self-assembly properties in surfactant gel, the fluid has remarkable shear self-repairability. The filtration and core damage experimental results meet the national industry standard for fracturing fluids. The gel system had simple formulation and excellent properties, which was expected to enrich the application of clean fracturing fluid in ultra-high temperature reservoirs.Keywords:clean fracturing fluid;VES;surfactant gel;rheology behavior;thermal stability
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PubMed
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2022
·
IF 4.291
Xinze Yang,Weihua Pei,Chunrong Wei,Xiaowei Yang,Huiling Zhang,Yang Wang,Miao Yuan,Qiang Gui,Yuanyuan Liu,Yijun Wang,Hongda Chen
Poly(3,4-ethylenedioxythiophene) (PEDOT) is an organic material with good electrochemical activity and electrical conductivity , and it is usually electrochemically deposited on the neural probes to improve their interface properties . However, the workload for electrode modification using an electropolymerization method becomes greater with the increase in the number of electrode channels. Moreover, the integration of electrodes and amplification circuits makes electropolymerization difficult to implement. In this study, a chemical polymerization method was proposed to produce conducting polymer PEDOT on the electrode sites. Compared with electropolymerization, it does not require each electrode site to be connected to a power source. It is competitive in batch preparation and is particularly suitable for neural microelectrodes prepared by a micro-electromechanical systems (MEMS) process. The charge storage capacity, impedance, mechanical stability , and electrochemical stability of conducting polymer PEDOT prepared by the proposed method are evaluated. The results indicate that the method is feasible for batch modification of the microelectrodes, and it is also suitable in cases where energization is inconvenient.
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危险品化学品经营许可证（带存储）