CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jiali Zhang,Tao Xue,Yongbiao Mu,Hongjie Li,Chao Yang,Limin Zang,Lin Zeng
The development of cathode materials that are well-matched with zinc anodes is critical for the advancement of zinc-ion hybrid capacitors (ZIHCs). Among various candidates, polypyrrole (PPy), a representative conductive polymer, has been extensively investigated as a cathode material due to its intrinsic conductivity and reversible redox activity. However, the practical application of PPy remains limited by an incomplete understanding of its charge storage mechanism. In this study, a straightforward approach is proposed to elucidate the charge storage behavior of PPy cathodes in ZIHCs. Specifically, using p-toluenesulfonic acid sodium as a dopant, PPy-coated carbon cloth electrode (denoted as PPy-CC) prepared of electrochemical deposition was employed as the cathode. In 1 M ZnSO 4 electrolyte, this electrode delivered a specific capacity of 124 mAh g −1 at a current density of 0.2 A g −1 and demonstrated excellent long-term cycling stability, retaining 71.2 % of its capacity after 5000 cycles at 5 A g −1 . To probe the underlying charge storage mechanism, X-ray photoelectron spectroscopy, X-ray diffraction, and in situ pH monitoring were conducted, revealing a dual-ion storage process involving both anion and cation participation during the electrochemical reactions. This work offers new insights into the charge storage mechanism of PPy-based cathodes and provides valuable guidance for the design of high-performance ZIHCs.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yuqing Sun,Mao Zhuo,Xin Yuan,Weixin Chen,Jian Zhang,Weimin Liu,Jian Li
Freshwater scarcity poses a significant challenge to global sustainable development. Solar-driven interface evaporation (SDIE) technology has garnered attention for its environmental friendliness and low cost, but it faces bottlenecks such as material costs and salt crystallization clogging. In this work, natural wood (NW), a biomass material with renewable properties and high cost-effectiveness, was selected as the substrate material, and a thin polyacrylamide (PAM) hydrogel layer was loaded on the wood channel structure through the modulation and design of the evaporator. Furthermore, hollow polypyrrole (PPy) nanotubes were introduced as a photothermal conversion material by the spraying technique to construct a hydrogel-wood composite solar evaporator (PWP). Based on the synergistic mechanism between the porous vertical channels of wood and the hydrogel layer, a dual driving force model of “bulk water-capillary force-osmotic pressure-vapor” is formed to optimize the water transport path. Moreover, the network structure formed by the hollow PPy nanotubes not only enhances light capture through multiple reflection mechanisms, but also reduces heat loss, achieving up to 97.8 % light absorption. With the dual driving force to optimize the water transfer path and combined with outstanding light trapping capability, the PWP evaporator realized excellent evaporation rate (2.31 kg m −2 h −1 ) and energy conversion efficiency (97.24 %) under one solar irradiation. Furthermore, PWP evaporator exhibited a remarkable capability to resist salt accumulation. Even after enduring a continuous evaporation process that lasted for 6 h within a 20 wt% NaCl solution, no observable salt crystal deposition was detected. Meanwhile, PWP evaporator have demonstrated the ability to operate stably in harsh environments, which opens up promising avenues for the advancement of cost-effective, high-performance wood-based evaporators.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Ying-Lin He,Zhuo Chen,Dilibinuer Niyazimaimaiti,Yuan Fan,Rimeh Ismail,Abudukeremu Kadier,Chantaraporn Phalakornkule,Putu Teta Prihartini Aryanti,Ghizlane Achagri,Peng-Cheng Ma
To address global freshwater scarcity, developing a sustainable and efficient brackish/high salinity water desalination technology is crucial. Solar-driven interfacial evaporation (SIE) systems typically consist of a water-absorbing layer drawing water via capillary action to the interface and a photothermal conversion layer absorbing sunlight to heat the interface. Researchers have focused primarily on designing various photothermal materials to enhance heat generation and evaporation efficiency, while they often overlook the need for all-weather functionality, limiting further advancement of SIE systems. This study introduces a novel basalt fabric-based photo-electrothermal interfacial evaporator for all-weather efficient desalination, integrating photothermal and electrothermal effects to enhance evaporation rates and reduce reliance on sunlight. The basalt fabric is functionalized with polydopamine, carbon nanotubes, and polypyrrole to improve its photothermal properties, and stainless steel mesh 304 is used as an electrothermal layer. Under simulated sunlight (1 sun) and 1.5 V in the laboratory, the evaporation rate of actual brackish water can reach 4.43 kg m −2 h −1 ; under real sunlight and 1.5 V outdoors, the evaporation rate can reach up to 6.37 kg m −2 h −1 . Additionally, due to the well-designed multilayer structure with Janus hydrophilicity gradient distribution, the evaporator exhibits excellent salt resistance and long-term stability, maintaining a daytime evaporation rate above 2.17 kg m −2 h −1 during 120-hour continuous operation without any intervention. The purified water meets the drinking water standards set by the WHO, with significant reductions in ion concentrations and chemical oxygen demand. This study provides a promising approach for efficient and sustainable brackish water purification, offering potential applications in water-scarce regions.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Huichen Zhao,Yaping Wang,Junmin Qian,Ming Yang,Chenyang Liu,Weijun Xu,Xinyu Li,Mofan Xiao,Wenjuan Luo,Aili Suo
Combination of different therapy modalities has emerged as a promising strategy for effective cancer treatment. Herein, we developed a multifunctional doxorubicin (DOX)-conjugated hyaluronic acid/polypyrrole (HA/PPy) nanoplatform, termed PPy-HA DOX -CH t nanoparticles, for the targeted photothermal chemotherapy of breast cancer. This nanoplatform was fabricated through layer-by-layer assembly of dopamine/hydrazide-modified hyaluronic acid (DHHA), hydroxyethyl chitosan, and anti-HER2 antibody-conjugated hyaluronic acid aldehyde on PPy nanoparticles. DHHA was synthesized by successively grafting dopamine and 3,3′-thiodipropionodihydrazide onto the carboxyl groups of HA via carbodiimide reaction for subsequent DOX conjugation through acid-labile hydrazone linkages. We systematically investigated the preparation, physicochemical properties, and anticancer efficacy of the nanoplatform. The results show that the size of PPy nanoparticles synthesized via Fe 3+ -initiated oxidation polymerization is controllable. The nanoplatform exhibits pH/glutathione dual-responsive drug release feature, excellent photothermal performance, enhanced structural stability, and outstanding biocompatibility. In vitro studies reveal that the nanoplatform can be efficiently taken up by MCF-7 cells via HER2-mediated endocytosis and kill them via apoptosis through the combination of PPy-mediated near infrared photothermal therapy and DOX-based chemotherapy. In vivo evaluation demonstrates significant tumor growth suppression. In a word, the as-prepared multifunctional nanoplatform holds substantial potential for targeted combination therapy of breast cancer.
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PubMed
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POLYMER COMPOSITES
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2025
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IF 4.7
Mantang He,Junze Guo,Chaofeng Han,Lin Jia,Xiaochen Wang,Jingchen Duan,Hongmei Hu,Feifei Wang,Yaping Li,Yanan Yang,Jiliang Cao
The electromagnetic wave radiation of smart wearable clothing poses serious harm to the human body. However, short-process and low-energy-consuming wearable clothing still faces challenges that hinder the widespread use of electromagnetic interference shielding. Herein, a reduced graphene oxide and pyrrole composite silk fabric (PPy-rGO-SF) has been developed through a facile self-assembling process. As a result, the as-obtained fabric possesses an excellent electrical conductivity of 0.141 kΩ/cm and outstanding electromagnetic interference shielding efficiency of 90% owing to the synergistic enhancement effect of reduced graphene oxide (rGO) and polypyrrole (PPy). Moreover, the electromagnetic interference shielding fabric possesses good stability, which still maintains the same electromagnetic shielding performance of 90% after undergoing 30 cycles of mechanical deformation tests. These findings offer a potential capacity for smart wearable clothing and electromagnetic interference shielding products.
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POLYMER
·
2025
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IF 4.5
Hong Lei,Yang Qiu,Zhijuan Pan,Bin He,Tao Yan
The development of conductive polyester (PET) fibers is of great significance in increasing their added value and application in functional textiles. However, the continuous preparation of conductive PET fibers with high strength and durability is still a challenge. In this work, polypyrrole/waterborne polyurethane (PPy/WPU)/PET composite conductive fibers (PWPFs) were continuously prepared by in-situ polymerization of blended pyrrole (Py)/WPU. The study investigated the effects of alkali concentration and treatment time on the moisture regain rate of PET fibers to improve the hydrophilicity. The effects of polymerization cycles and mass fraction of WPU on the microstructure and electrical property of PWPFs were studied. The result demonstrated that the moisture regain of PET fibers increased from 0.45 % to 1.13 % when treated in a 50 g/L NaOH solution for 6 h. A stable composite structure of WPU/PPy was formed on the surface of conductive PET fibers, prepared with 5 polymerization cycles and a WPU mass fraction of 5 wt%, achieving a resistance of 58.41 kΩ/cm. The PPy/WPU composite conductive layer partially compensated for the mechanical properties lost by PET fibers during alkaline treatment. Notably, the abrasion resistance and washing resistance of PWPFs were excellent. The conductivity of PWPFs was highly correlated with the environmental humidity, temperature, salinity, and ultraviolet light irradiation and recoverable when environmental conditions underwent cyclic changes, which demonstrated that the PWPFs could be used for multi-functional sensing applications.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Tong-Yu Li,Wen-Hao Geng,Ze-Long Bao,Peng-Fei Qian,Yu-Long Guo,Hong-Zhang Geng
Flexible thermoelectric materials hold great promise for wearable electronics and self-powering. However, p-type thermoelectric materials that combine multifunctionality, high performance and long-term stability are scarce. Here, we developed a flexible p-type TE-Fabric with excellent stress/thermoelectric sensing and electrical heating properties through molecular engineering strategies. It is worth noting that during the preparation of TE-Fabric, we found that dopamine modification could enable the ordered orientation of PEDOT:PSS. The dopamine-modified PEDOT: PSS treated with multi-layer superposition HCl can greatly improve the electrical conductivity of thermoelectric materials (2040.8 S·cm −1 ), while retaining the partial orientation of PEDOT. The TE-Fabric obtained through layer-by-layer self-assembly achieves a double breakthrough in Seebeck coefficient (27.3 μV·K −1 ) and electrical conductivity (2431.2 S·cm −1 ), while exhibiting excellent mechanical flexibility (elongation at break of 71.1 %, breaking strength of 14.8 MPa) and high-performance stability. Taking advantage of TE-Fabric's high conductivity characteristics, we found that TE-Fabric was able to produce a high efficiency thermal response (93.1 % electro-thermal conversion efficiency, 177.1 °C) at low voltage (5 V). At the same time, the flexibility and high-performance stability supported the advantage of TE-Fabric in stress sensing, with a fast response (0.213 to 0.218 s). The thermoelectric device constructed by alternating six sets of flexible p-type TE-Fabric and flexible n-type nickel sheets produces an output voltage of 9 mV at a temperature difference capable of 60 K. Based on this feature, we combine the thermoelectric generator with a mask to make a breath detection sensor device. By outputting different voltage signals, we can monitor the health status of human body in real time during deep breathing, static breathing, rapid wheezing and coughing. This pioneering work opens up new avenues for the development of flexible P-type TE materials with high stability and versatility.
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DESALINATION
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2025
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IF 9.8
Ling Feng,Hanfei Li,Feiyu He,Binghui Tian,Min Yang
High-salinity wastewater often contains NaCl, NaNO 3 , and Na 2 SO 4 , with mixed salts classified as hazardous waste in China, highlighting the urgent need for efficient separation and resource recovery. Electrodialysis (ED) demonstrates considerable potential due to its low energy consumption and controllable operational costs. However, commercial anion exchange membranes (AEMs) in the ED stack, while effective at separating ions with opposite charges, exhibit insufficient selectivity for ions of like charges, particularly for NO 3 − /SO 4 2− and NO 3 − /Cl − separations. This study aims to improve the selective separation of NO 3 − under high-salinity conditions. The commercial AGU-AEM was surface modified with polypyrrole (PPy) by in-situ oxidative polymerization to prepare a selective AEM (PPy-AEM), which was then applied to simulate high-salinity wastewater ED treatment. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and water contact angle analysis revealed that the dense PPy surface layer imparted high hydrophobicity, improving NO 3 − selectivity based on differences in ion dehydration energy. Furthermore, by optimizing flow rate and feed concentration to enhance mass transfer during PPy-AEM application in ED process, it was found that NO 3 − separation performance of the PPy-AEM could be further improved in high-salinity conditions. The synergistic strategy of membrane hydrophobic modification and enhanced mass transfer achieved NO 3 − /SO 4 2− and NO 3 − /Cl − selectivities of 7.90 and 3.63, representing increases of 8.23 and 3.74 times compared to the original membrane, mainly due to amplification of ion dehydration differences and mitigation of concentration polarization by the hydrophobic surface layer. This synergistic approach of membrane surface hydrophobic modification and mass transfer enhancement provides a new idea for efficient and selective NO 3 − separation from high-salinity wastewater, contributing to the development of effective processes and equipment for NO 3 − selective separation and promoting the sustainable utilization of saline wastewater or mixed salts.
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ADVANCED MATERIALS
·
2025
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IF 26.8
Linlin Yang,Yizhe Dong,Dong Zhao,Xiangyu Li,Jiajie He,Tin Pou Lai,Enze Zhou,Toshiyuki Ueki,Yixing Li,Xiangying Meng,Liyun Zhang,Bin Yu,Wenli Pei,Yongqiang Fan,Tingyue Gu,Fuhui Wang,Dake Xu
Biohydrogen production offers a promising pathway for developing clean and renewable energy sources. However, its practical application has been hindered by low efficiency and sustainability issues. Here, it is introduced an energy-efficient and output-sustainable hybrid system (LPBC/CH system) for biohydrogen production by integrating self-assembling intermetallic ( L 1 0 ) FePt@polypyrrole nanobiocatalysts (LPBC) with Clostridium pasteurianum . The engineered LPBC, characterized by optimal atomic structures and defined electronic properties, demonstrates robust transcriptional enhancement efficiency and biocatalytic capability, leading to an ≈103% increase in hydrogen production rate and a 57% enhancement in hydrogen yield to the bare C. pasteurianum system. Within the LPBC/CH system, the nanobiocatalysts target NADH and [FeFe] hydrogenase, triggering efficient tandem biocatalytic reactions for proton reduction. Notably, the LPBC achieves sustained performance for at least 30 days – a benchmark unmatched by other reported nanobiocatalysts. This study not only advances the frontiers of biohydrogen production but also establishes a universal framework for constructing hybrid systems with superior efficiency and sustainability.
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International Journal of Electrochemical Science
·
2024
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IF 1.3
Shiwen Zhao,Shu Du
This study presents the development of a molecularly imprinted polymer (MIP) based voltammetric sensor for the ultra-sensitive detection of osimertinib, a third-generation epidermal growth factor receptor tyrosine kinase inhibitor. The sensor was fabricated using a unique thia-bilane (S-BIL) functional monomer, which enhances the binding affinity and selectivity towards osimertinib. The pS-BIL MIP sensor exhibited a wide linear range (0.01–1000 nM), an extremely low detection limit (0.005 nM), and excellent selectivity, demonstrating its superiority over previously reported methods. The imprinting effect was confirmed through various characterization techniques, revealing the formation of specific recognition sites and improved electron transfer properties. The sensor displayed remarkable stability, retaining 95.2 % of its initial response after 30 days, and high reproducibility relative standard deviation (RSD) = 3.2 %, n = 5). Moreover, the pS-BIL MIP sensor was successfully applied to the determination of osimertinib in spiked human serum samples, with recoveries ranging from 96.5 % to 103.2 % and RSDs below 4.5 %. These findings highlight the immense potential of the developed sensor for the sensitive and reliable monitoring of osimertinib in clinical settings.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Ge Cao,Anqi Wu,Chuhan Zhang,ShiJia Zhang,Zhenyu Wang,Enhou Han
Corrosion is a major challenge across various industries, leading to significant economic losses and safety hazards. This study synthesized polypyrrole nanotubes (PPy-NTs) using methyl orange (MO) as a template and polyvinylpyrrolidone (PVP) as a dispersant. The PPy-NTs exhibited excellent dispersion stability (zeta potential of 34 mV) and high electrical conductivity (28.5 S/cm). Waterborne polyurethane (WPU)-based coatings with varying PPy-NT concentrations (0 %, 0.5 %, 1.0 %, and 2.0 %) were evaluated for corrosion resistance in a 3.5 wt% NaCl solution over immersion periods of 1, 7, 14, and 28 days. Electrochemical impedance spectroscopy (EIS) showed that the 1.0 % PPy-NT coating provided the best corrosion protection, with an initial impedance about 30 times higher than the pure WPU coating. After 28 days, its impedance remained over 200 times higher than that of the pure WPU coating. Polarization tests confirmed the 1.0 % PPy-NT coating had improved corrosion resistance, with a lower corrosion current density (49.4 nA/cm²) and higher corrosion potential (-0.13 V) compared to the pure WPU coating (636 nA/cm², −0.58 V). Salt spray testing showed the 1.0 % PPy-NT coating had superior corrosion resistance. These results demonstrate the enhancement of WPU coatings with PPy-NTs, showing potential for long-term corrosion protection.
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MICROCHEMICAL JOURNAL
·
2025
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IF 5.1
Guoliang Zhang,Cong Xue,Ruxangul Jamal,Tursun Abdiryim,Feng Xu,Qian Cheng
L-Tyrosine (L-Tyr) is one of the 21 essential amino acids for the human body. Its accurate detection is of great clinical and practical significance in monitoring, food quality and safety. Functional groups critically govern electrochemical sensor performance by mediating target adsorption. Conventional poly (3,4-ethylenedioxythiophene) (PEDOT)-based sensors face limited flexibility and active site accessibility. Amino-grafted PEDOT was developed by in situ growth on Ti 3 C 2 T X nanosheets, incorporating small-sized Au nanoparticles to create a highly conductive and active substrate for selective detection of L-Tyr. The resulting molecularly imprinted electrochemical sensor, fabricated on the PEDOT-CH 2 NH 2 /Ti 3 C 2 T X /Au NPs/GCE platform, exhibited enhanced catalytic activity and efficient L-Tyr enrichment. The combination of components improved electron transfer, MIP stability, and imprinting cavity accessibility. The sensor demonstrated a broad linear range (10 −6 –100 μM) with an ultralow detection limit (3.64 × 10 −6 μM), and exhibited excellent selectivity, reproducibility, and operational stability. Practical tests in milk matrices confirmed high recovery rates (96.65 %–101.35 %), showcasing its potential for use in complex food systems and it also has detection capabilities similar to those of standard methods. This work provides a sensitive and reliable strategy for amino acid monitoring in food, with significant applications in food safety assurance.
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危险品化学品经营许可证（带存储）