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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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Caiyu Rong,Xiang Dong,Shidai Zhang,Shuqin Ding,Zhaoxin Zhang,Yan Ma,Zixin Lin,Yuhe Song,Jiayi Zhang,Shibin Nie,Konghu Tian
Inspired by Viper scales, a cotton-based smart textile named PMCOT has been developed. • PMCOT exhibits thermosensitive properties, enabling graded fire alarm. • PMCOT demonstrates piezosensitive properties, achieving body language recognition and remote control. To address the challenge of simultaneously achieving superior fire resistance and intelligent sensing in next-generation firefighting suits, we herein report a viper scale-inspired organic-inorganic hybrid smart armor, PPy@M(OH)(OCH 3 ) (M = Co, Ni), which was further utilized to fabricate a cotton-based smart fabric, PMCOT. PMCOT exhibits excellent flame resistance, thermosensitivity, and piezosensitivity. Specifically, it withstands 1300 °C flame jet for over 60 s while maintaining structural integrity; its peak heat release rate was reduced by 87.38% compared with pure cotton, and the residual mass reached 41.6% after thermal decomposition. Endowed with a piezoresistive sensing mechanism, PMCOT realized real-time resistance monitoring of shoulder, elbow and knee joints, capturing distinguishable signals for typical firefighting postures. It also achieved graded fire alarm via thermosensitive resistance variation (37.2–95.9 °C). In addition, PMCOT can capture finger joint signals of firefighters and operate a robotic arm remotely with stable cyclic performance. PMCOT possessed excellent comprehensive wearable performance with increased elongation at break (27.6%), only 4.8% lower water vapor transmission rate than cotton, and high-efficiency antibacterial performance. The bionic strategy proposed in this study provides critical support for the design of fireproof smart fabrics and the development of next-generation intelligent firefighting suits. Download: Download high-res image (293KB) Download: Download full-size image
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Advanced Materials Technologies
·
2026
·
IF 6
Wenbo Ma,Peiyang Huang,Xiang Li,Xiaobin Zhan,Min Li,Shulan Jiang,Xin Tu
Fabricating high performance light-driven soft actuators remains challenging due to the viscosity limited dispersion of photothermal agents, which induces structural defects and attenuates the resulting photomechanical response. Herein, an acoustic vibration mixing (AVM) strategy is introduced to achieve an exceptionally homogeneous and optimized loading integration of polydopamine (PDA) and polypyrrole (PPy) within a polydimethylsiloxane (PDMS) matrix. This processing paradigm ensures uniform thermal distribution and robust photomechanical transduction, enabling a bilayered microrobot to execute versatile locomotion modes. Experimental results demonstrate that our actuator achieves a 100° deflection at ∼350 mW/cm 2, and the microrobot can execute terrestrial crawling (0.1 BL/s), high-speed rolling (7.5 BL/s), and Marangoni-driven aquatic gliding (0.41 BL/s). Significantly, the superior photothermal conversion efficiency empowers the robot to generate sufficient torque to overcome interfacial capillary pinning, thereby facilitating seamless bidirectional transitions between land and water. This work provides a practical fabrication paradigm for multifunctional soft robotic systems designed for complex, cross-domain environments.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Muneerah Alomar,Lamia Abu El Maati,Muhammad Sultan Irshad,Naila Arshad,Afraa Alotaibi,Van-Duong Dao
The fabrication of sustainable solar-powered interfacial evaporators is essential for addressing global water scarcity challenges. Herein, we propose a new photothermal evaporator by applying a zirconium carbide-polypyrrole (ZrC-PPy) composite coating to a cellulose filter (CF) possessing enhanced photothermal conversion. The 3D photothermal evaporator is constructed by integrating a ZrC-PPy@CF evaporator onto triangular polyurethane (PU) foam. With a poor thermal conductivity of 0.078 W m −2 K −1 , the synthesized evaporator allowed effective heat localization under light. The evaporator produced an evaporation rate of 1.92 kg m −2 h −1 with a corresponding photothermal conversion efficiency of 89%. Additionally, the evaporator achieved over 99.9% rejection of common metal ions (Na + , K + , Ca 2+ , Mg 2+ ) from saline water, yielding high-quality freshwater. These findings highlight the ZrC-PPy@CF evaporator as a scalable and versatile platform for efficient wastewater treatment and desalination.
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Surfaces and Interfaces
·
2026
·
IF 6
Xiongcheng Duan,Shuzhao Zhang,Jia Liu,Zhuorui Wu,Wan Meng,Lin Zhang,Hengye Li,Zhongxia Wang,Meijie Wei,Wei Wang
Macrocycle-based porous organic polymers (M-POPs) are promising adsorbents for uptake of iodine vapor and adsorption of organic micropollutants (OMPs) from water. Herein, two conjugated triaryl triazine-incorporated, calix[4]pyrrole-based porous organic polymers were prepared by diazocoupling reaction between 4,4′,4′'-(1,3,5-triazine-2,4,6-triyl)trianiline (TTTA) and two configurational isomers of resorcinol-modified calix[4]pyrroles (2α,2β-C4P and 4α-C4P), referred as CP-POP-1 and CP-POP-2, respectively. The obtained CP-POPs were gifted with good porosity, high nitrogen contents and conjugated triaryl triazines, while CP-POP-1 and CP-POP-2 exhibited high iodine vapor uptake at 4.27 g/g and 4.25 g/g, respectively. Charge transfer interaction was the main mechanism for iodine vapor uptake on the CP-POPs. Besides, the CP-POPs displayed preferred adsorption feature to cationic dyes, such as methylene blue (MB), crystal violet (CV) and rhodamine B (RB), while CP-POP-2 showed superior adsorption performance towards cationic dyes. The q m values of MB, CV and RB by CP-POP-2 were as high as 317.46, 373.13 and 471.69 mg/g, respectively. Thermodynamic studies discovered that the adsorption of cationic dyes upon CP-POP-2 was a spontaneous process, while mechanism researches confirmed that electrostatic, hydrophobic and host-guest interactions were involved for adsorption of cationic dyes upon CP-POP-2. In addition, CP-POP-2 could adsorb cationic dyes efficiently from water samples containing complex matrix and exhibited good reusability. The obtained results suggested the bright prospect of the CP-POPs in removal of environmental pollutants. Download: Download high-res image (222KB) Download: Download full-size image
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DESALINATION
·
2026
·
IF 9.9
Cheng Chen,Cunxiu Zhang,Shengyi Wang,Wanneng Yu,Yuxiu Dong,Yuezi Huang,Mingming Guo
Oxidative polymerization strengthens PPy hydrogels and optimizes evaporation enthalpy. • Ti 3 C 2 T x -PPy multilevel channels guide salt crystallization to evaporator edges. • Ti 3 C 2 T x -PPy evaporator delivers 4.63 kg m −2 h −1 , 35% higher than PPy. Solar-driven interfacial evaporation, which relies on localized photothermal conversion at the gas-liquid interface, represents an effective strategy for seawater desalination. However, continuous salt crystallization and deposition at the evaporation interface remain a critical bottleneck that limits long-term operational stability. Herein, we develop a Ti 3 C 2 T x -PPy composite hydrogel evaporator with multilevel mass-transport channels for solar seawater desalination and spatial regulation of salt crystallization. The incorporation of Ti 3 C 2 T x optimizes the internal pore network of the polypyrrole hydrogel, establishing hierarchical mass-transport pathways that promote the preferential migration of salts towards the evaporator edges, where crystallization subsequently occurs. Meanwhile, Ti 3 C 2 T x enhances the photothermal conversion capability of the system and modulates the hydrogen-bonding structure of water molecules, thereby effectively lowering the evaporation energy barrier. Under 1 sun illumination, the Ti 3 C 2 T x -PPy evaporator achieves an evaporation rate of 4.63 kg m −2 h −1 , while maintaining a clean surface and undiminished performance after 50 h of continuous operation. The evaporator also exhibits purification efficiencies exceeding 99% in hypersaline solutions, dye-contaminated wastewater and real seawater, and delivers an average daily water yield of over 25 L m −2 under natural sunlight. This work provides a promising strategy for the design of hydrogel-based solar desalination systems with high efficiency, excellent salt resistance and long-term operational stability. Download: Download high-res image (150KB) Download: Download full-size image
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Yuke Zheng,Yidan He,Zhiqi Zhang,Jinglin Zhang,Tong Wang,Bo Wang,Tianying Wang,Xiaojuan Zhang
To suppress the ever-increasing challenge of electromagnetic radiation pollution and exploit lightweight wave absorbers, enormous attention has been focused on aerogels. Herein, a sequence of Fe3C/Fe/NC aerogels with variable dielectric/magnetic ratios has been successfully synthesized by redox reaction, freeze-drying, and high-temperature calcination. Benefiting from the dielectric-magnetic coupling loss, optimized impedance matching, and structural advantages, the Fe3C/Fe/NC-2/PVDF composite displays optimal microwave absorption performance with a minimum reflection loss (RLmin) value of −59.03 dB at 2.53 mm under an ultralow filler loading of 3 wt %. Meanwhile, the maximum effective absorption bandwidth (EAB) of Fe3C/Fe/NC-3/PVDF composite nearly covers the entire X-band at 2.92 mm. Moreover, the radar cross-section (RCS) simulation results and infrared thermal images respectivelly verify their application potential in radar wave attenuation and the infrared stealth domain. The specific wave absorption mechanism is mainly ascribed to dielectric loss, including conduction loss and polarization loss, magnetic loss containing eddy current loss and exchange resonance, as well as multiple reflections and scattering caused by the porous structure. This study can effectively decouple the impedance matching and microwave dissipating ability by dielectric/magnetic ratio modulation and microstructure design, which is of great significance for the development of lightweight and advanced wave absorbers.
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PubMed
高影响因子
Chemosensors
·
2026
·Vol. 14
·期 8
·187
·
IF 4.4
Xueya Song,Jing Yang,Shunrun Zhang,Dongyun Zheng
Molecularly imprinted polymers combined with carbon nanomaterials have proven effective in constructing electrochemical sensors with high selectivity, sensitivity, and robustness. Herein, a polypyrrole-based molecularly imprinted electrochemical sensor was developed on a multi-walled carbon nanotube-modified glassy carbon electrode for homocysteine detection in human serum. The sensor was fabricated via drop-coating of sodium dodecyl sulfate-dispersed multi-walled carbon nanotubes, followed by in situ electropolymerization of pyrrole using homocysteine as the template. The morphology, interfacial properties, and electrochemical behavior of the electrode were systematically characterized by scanning electron microscopy and electrochemical techniques. Under optimized conditions, the sensor showed a linear response to homocysteine in the range of 1.0 × 10−10mol/L to 1.0 × 10−5mol/L, with a detection limit of 7.12 × 10−11mol/L (S/N= 3). The sensor also exhibited good selectivity against common interferents, as well as acceptable reproducibility and stability. Recovery tests in human serum yielded recoveries of 91.00~110.50% (average: 100.73%), demonstrating its potential for practical homocysteine analysis in complex biological matrices.
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Nanomaterials
·
2026
·Vol. 16
·期 16
·1015
·
IF 4.8
Xin Lin,Jiayi Tu,Jinyun Zhao,Fangfang Wu,Xingping Fu,Hao Lin,Jiapeng Hu
In this study, a hierarchical rod-assembled, polypyrrole-modified Ce–Al–La trimetallic metal–organic framework (Ce–Al–La–MOFs@PPy) composite was successfully synthesized through a solvothermal method combined with in situ polymerization for efficient fluoride removal from aqueous solutions. The incorporation of conductive polypyrrole (PPy) into the multimetallic MOFs effectively enhanced the structural stability, surface properties, and adsorption performance of the material. Adsorption experiments demonstrated that the optimal metal-to-ligand molar ratio was 3:1, and the prepared adsorbent exhibited excellent fluoride removal performance under weakly acidic conditions (pH = 5). The maximum adsorption capacity calculated from the Langmuir model reached 216.92 mg·g−1at 45 °C. Adsorption kinetics were well fitted by the pseudo-second-order model, indicating that the adsorption process was mainly governed by chemisorption. Mechanism investigations based on FTIR and XPS analyses demonstrated that fluoride removal mainly occurred through electrostatic attraction and coordination exchange between fluoride ions and the Ce/La active sites. In addition, the composite exhibited good selectivity, anti-interference ability toward coexisting ions, and satisfactory fluoride removal performance in practical industrial wastewater. These findings suggest that Ce–Al–La–MOFs@PPy is a promising adsorbent for efficient fluoride-contaminated wastewater treatment.
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Materials
·
2026
·Vol. 19
·期 16
·3496
·
IF 3.7
Yunfei Cai,Caiyan Gao,Cun-Yue Guo
Copper selenide compounds, owing to their excellent electrical transport properties and low thermal conductivity, are promising thermoelectric materials, but their poor mechanical flexibility limits practical applications in flexible devices. Herein, a simple all-electrochemical strategy was developed to fabricate polypyrrole (PPy)/Cu2−xSe composite thermoelectric films through sequential electropolymerization of pyrrole and electrodeposition of Cu2−xSe. By optimizing the deposition potential of Cu2−xSe and pyrrole polymerization time, the thermoelectric performance of the composite films was significantly enhanced. The optimized PPy/Cu2−xSe composite film achieved a maximum power factor of 174.05 ± 9.87 μW m−1K−2, nearly 300 times higher than that of pristine PPy, while maintaining a low thermal conductivity of 0.30 W m−1K−1. The composite film also exhibited excellent flexibility, retaining 94.77% of its initial power factor after 1000 bending cycles. A flexible thermoelectric device assembled from the composite films delivered a maximum output power of 240.5 nW at ΔT= 50 K. This work provides an effective strategy for developing Cu2−xSe-based flexible thermoelectric composites.
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LANGMUIR
·
2026
·Vol. 42
·期 29
·21207-21216
·
IF 4.4
Wang Dan,Zhang Yuhang,Li Mingtong,Xia Youyi,Jin Ling,Wang BingBing,Gao Hong,Yang Mingcheng,Dong Bin
Nonlinear phenomenon widely exists in living organisms
in nature.
Over the past decades, self-propelled micromotors with oscillatory
behaviors have aroused focus of attentions. However, oscillatory behaviors
driven by nonchemical mechanisms have rarely been explored. In this
paper, we report a collective oscillation of photothermal micromotors
driven by the periodic variation of a photothermally induced temperature
difference, which leads to an alternating two-mode motion, a slow
mode driven by the synergistic effects of self-thermophoresis and
thermocapillary forces (∼70 μm/s) and a fast mode driven
by thermal convection (∼2422 μm/s). The oscillatory behavior
is tunable by adjusting the light intensity and the concentration
of microspheres. The present findings not only provide fresh insight
into emergent collective behaviors of active matter but also pave
the way toward the study of more complex and coupled oscillatory active
systems.
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高影响因子
Journal of Functional Biomaterials
·
2026
·Vol. 17
·期 8
·405
·
IF 5.9
Lele Liu,Peng Gu,Dan Xia,Yonghao Wen,Baoe Li,Donghui Wang,Yaohong Wu
Nickel–titanium (NiTi) stents have been widely used for the palliative management of portal vein tumor thrombosis (PVTT) due to their excellent mechanical strength and biocompatibility. However, conventional NiTi implants are therapeutically passive and lack intrinsic antitumor activity, rendering them vulnerable to tumor ingrowth and subsequent restenosis. Electrical stimulation-mediated ablation offers a controllable physical strategy for local tumor clearance; however, the native TiO2passivation layer on the NiTi surface restricts its interfacial electroactivity. Electrochemical impedance spectroscopy revealed that the PPy coating significantly reduced the interfacial impedance of the NiTi substrate. After loading with sorafenib, NiTi−PPy−S maintained good electrochemical responsiveness and enabled voltage-dependent drug release characteristics. Under an applied potential of 0.9 V for 24 h, approximately 10.522 ± 0.295 μg/cm2of the loaded sorafenib was released mechanistically, whereas only 0.249 ± 0.171 μg/cm2was released through passive diffusion over the same period. The antitumor effect is closely associated with ES-triggered Ca2+influx, mitochondrial Ca2+overload, loss of mitochondrial membrane potential, and caspase-3-dependent apoptosis. These findings demonstrate that electro-responsive PPy can transform passive NiTi implants into active antitumor therapeutic interfaces, offering a promising strategy for developing multifunctional implants for PVTT treatment.
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