ACS Omega
·
2026
·Vol. 11
·期 29
·44005-44014
·
IF 5.2
He Xiao-Heng,Li Jia,He Yang-Yang,Xu Chen,Bai Qiu-Hong,Zhang Jing-Jing,Shen Ye-Hua
With the growing
emphasis on environmental consciousness and personal
safety awareness, fiber electrodes featuring excellent environmental
friendliness and safety performance are crucial for developing high-performance
close-fitting wearable electronics. Herein, a flexible, degradable,
and flame-retardant calcium alginate (CaAlg)/carbon nanotubes (CNTs)/polypyrrole
(PPy) composite fiber electrode is developed for advanced fiber-shaped
supercapacitors (FSSs). Benefiting from the intrinsic biodegradable
and flame-retardant properties of CaAlg matrix, the composite fiber
electrode exhibits controllable degradability and superior flame retardancy.
Moreover, owing to the unique wrinkled PPy layer that synergistically
improves both electrochemical and mechanical properties, the ternary
CaAlg/CNT/PPy composite fiber electrode shows a remarkable areal capacitance
of 1308 mF cm –2 at 2 mA cm –2 and
an outstanding mechanical strength of 45 MPa. The as-fabricated FSS
device delivers a high energy density of 10.9 μWh cm –2 , outperforming most state-of-the-art flexible FSSs, especially those
based on biomass-derived fibers. These flexible composite fiber electrodes
hold great promise for the development of high-performance, high-safety
energy storage devices toward sustainable portable and wearable electronics.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Muneerah Alomar,Lamia Abu El Maati,Muhammad Sultan Irshad,Naila Arshad,Afraa Alotaibi,Naveed Mushtaq,Van-Duong Dao
The water scarcity crisis in the developing world creates an immediate need for cost-effective, environmentally friendly water treatment methods. Interfacial solar evaporation is one of the promising ways of dealing with this problem using renewable solar energy. The challenge associated with this field is developing an advanced photothermal absorber with capabilities for wide-bandgap solar absorption, efficient water–air interface thermal management, fast capillary water transport, and good stability. Herein, we introduce a cone-shaped photothermal evaporator device based on a combination of plasmonic tantalum nitride (TaN) nanoparticles and a conducting polypyrrole (TaN-PPy) nanocomposite on a hydrophilic cotton surface. The TaN nanoparticles possess a high possibility of absorbing a wide wavelength of light based on localized surface plasmon resonance effects, and the PPy network can support charge transfer, improve interface stability and allow for simple device production by a spray-coating technique. Such a synergistic design leads to a highly efficient evaporation setup. Under 1 sun irradiance of 1 kW m −2 , an excellent evaporation rate of 1.8 kg m −2 h −1 and a high solar-to-vapor conversion efficiency of 84% are obtained for the optimized TaN-PPy fabric. Moreover, it displays high stability in a continuous testing setup and efficiently desalinates simulated seawater, with a reduction in salinity above 99.9%. This work provides a practical and scalable design for efficient, long-term solar desalination and wastewater treatment.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yong Li,Zhuoyu Zhang,Shihao Zhao,Xiao Miao,Haojie Song,Mengyao Wang,Jiangdong Gu,Jun Wu
The application of photothermal superhydrophobic materials still suffer from the limit intrinsic solar absorption, the single functionality and structural instability. Herein, a durable multifunctional photothermal superhydrophobic coating was designed by the pre-self-assembly and in-situ copolymerization of pyrrole (Py) and dopamine (DA). Benefitting from the in-situ growth of Py and DA on the pre-embedded oxidant matrix (FeCl 3 ), the porous interwoven PPy-PDA nanofiber structure rapidly formed. After encapsulation of highly transparent polydimethylsiloxane (PDMS), the open pores and channels facilitated a remarkable 99 % light absorption by enabling multiple reflections and stable multi-scale structure. Thus, the prepared coating showed efficient photothermal conversion performance with surface equilibrium temperature 93.8 ℃ (1 kW/m 2 ) and superhydrophobicity. In addition, the freezing time of the coating was 22.2 times that of uncoated surface passive anti-icing. Furthermore, the freezing ice could melt within 2 min and rolled off immediately under 1 kW/m 2 sunlight. Therefore, the prepared coating showed excellent passive anti-icing and photothermal active de-icing property. Importantly, the coating could also be used for photothermal evaporation. Under 1 sun intensity, the solar vapor evaporation rate of the coating was 2.06 kg m −2 h −1 . More importantly, the coating maintained outstanding mechanical and chemical durability, which confirmed by strict tests (sandpaper abrasion test, kneading test, tape-peeling test, high temperature resistance test, strong UV radiation test and different pH solutions erosion test). The outstanding environmental adaptability has a great promise for practical applications of photothermal conversion materials.
研究领域:
材料科学
·
纳米技术
·
表面工程
·
能量转换
·
环境适应性
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Chemical Engineering Journal Advances
·
2024
·
IF 5.5
Ting Shu,Yuliang Zhang,Yanhui Cao,Fei Wang,Bochen Jiang,Yanhua Lei,Lihua Dong,Xiaobo Chen
In polar environments, the presence of ice on the surfaces of ships and instruments can lead to equipment failure, an unstable center of gravity, and pose hazards to operators. To mitigate the damage caused by both icing and corrosion, this paper aims to investigate a corrosion-resistant photothermal deicing coating material. The coating matrix utilizes a low-viscosity epoxy resin system, while the additives include polypyrrole (PPy) with excellent photothermal conversion capability and corrosion resistance, along with graphene oxide (GO)-modified nano-silica. By carefully controlling the ratio, a composite coating is formulated with both anti-corrosion and photothermal deicing abilities under light conditions. The results demonstrate that under simulated sunlight irradiation, the surface temperature of the coating at different proportions can rise to over 80 ℃ within 10 min, with the highest temperature reaching 84.9 ℃. The optimal proportion of the coating remains unfrozen at -15 ℃, exhibiting an icing delay time of 710 s, and the frozen droplets melt within 5 s. Additionally, the coating exhibits excellent corrosion resistance, contributing to a more effective protection of metal surfaces. Therefore, this type of photothermal anticorrosive coating holds significant potential for widespread application in polar environments.
研究领域:
材料科学
·
表面工程
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COMPOSITES SCIENCE AND TECHNOLOGY
·
2025
·
IF 9.8
Long Chen,Siqi Chen,Jiaqi Li,Chenyao Hu,Miaomiao Zhu,Ranhua Xiong,Chaobo Huang
Flexible wearable electronics impose ever-more stringent demands on the design strategies for piezoresistive sensing materials. Nanofiber aerogels (NFAs) have emerged as a focal point in this field, attributed to their unique characteristics such as low density, extensive specific surface area, high porosity, and outstanding mechanical performance. Conventional methods for fabricating conductive NFA composites often entail complex procedures, including additional thermal annealing and carbonization, to establish three-dimensional conductive networks, which significantly hinder scalability and practical applications. To overcome this challenge, we propose a sustainable, cost-effective, and efficient hydrogen-bonded self-assembly drive strategy for designing conductive nanofiber networks with robust coaxial structures. During polymerization, pyrrole monomers were in situ polymerized onto cellulose acetate/thermoplastic polyurethane (CA/TPU) composite nanofibers through hydrogen-bonding, forming a roubst conductive shell layer while facilitating the mutual cross-linking of short nanofibers to establish a porous three-dimensional network. Benefiting from the nanofiber skeleton and multilevel pore structure, the resultant CA/TPU/PPy NFA (CTP-NFA) possesses an ultra-low volume density (30.77 mg cm −3 ) and remarkable mechanical properties (55.78 kPa at 80 % strain), enduring deformation under 1700 times its weight. Furthermore, the associated aerogel sensor exhibits ultra-high sensitivity (33.56 kPa −1 ), rapid response time (100 ms), and exceptional cycling stability (>5500 cycles of compression). Significantly, the NFA-based piezoresistive sensor precisely detects pressure signals as low as 30 Pa, enabling accurate monitoring of adult pulse waveforms. Given its superior performance, the resultant NFA presents substantial promise for applications in human health monitoring and human-computer interaction.
研究领域:
材料科学
·
传感技术
·
生物医学工程
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2024
·
IF 6.3
Wei Xie,Xiaoke Li,Jiaying Zhou,Fei Yin,Yaogang Jiang,Liu Yang
In this study, a novel approach for the synthesis of eco-friendly and cost-effective composite nanomaterials PPy@HNTs was introduced. The proposed synthesis method offers environmental friendliness, simplicity, and cost-effectiveness. The resulting PPy@HNTs nanofluids , obtained through dispersion in a specially formulated base solution, demonstrate excellent dispersion stability , desirable thermophysical properties , and remarkable photothermal conversion performance. At a concentration of 800 ppm, the PPy@HNTs nanofluids exhibited an impressive efficiency of 79.2 %, surpassing the performance of conventional heat transfer fluids (HTFs). This research presents a promising avenue for the utilization of low-cost nanofluids in the field of photothermal applications.
研究领域:
材料科学
·
能源科学
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OPTICAL MATERIALS
·
2025
·
IF 4.2
Xianglu Zhao,Yinchun Fang
In recent years, the fabrication of amorphous photonic crystals (APCs) structural colors on fabrics has become a research hotspot in the field of textile coloring. However, the preparation of APCs structural colored fabrics usually requires the use of black fabric as a substrate or the addition of black material for co-assembly, which greatly limits the practical application. In this study, SiO 2 @PPy composite microspheres with different particle diameters were prepared as building units and deposited on white polyester fabric pre-treated with polyacrylate (PA) by atomization to form vivid structural colors. Polydimethylsiloxane (PDMS) was used as superhydrophobic agent to treat SiO 2 @PPy structural colored fabrics by spraying method. The results showed that SiO 2 @PPy composite microspheres with different particle diameters were prepared, which can be assembled into APCs structure on white polyester fabrics, showing different vivid structural colors. The water contact angle of structural colored fabric after PDMS treatment reached greater than 150°, showing excellent superhydrophobicity to endow it with anti-fouling property. With the introduction of PA adhesive, the structural colored fabrics had good washing and abrasion colorfastness. This study provides a new strategy for developing functional structural colored fabrics on white textile substrates.
研究领域:
纺织科学
·
材料科学
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Advanced Materials Technologies
·
2020
·Vol. 5
·期 8
·2000272
·
IF 5.969
Xingxing Li,Yanan Ma,Peizhi Shen,Chuankun Zhang,Minglei Cao,Shaojun Xiao,Jinfeng Yan,Shijun Luo,Yihua Gao
Ti 3 C 2 T x MXene, as a new 2D material, with unique physical and chemical properties, is ideal for building high performance miniaturized electrochemical energy storage devices. However, the operating voltage window of Ti 3 C 2 T x based microsupercapacitor (MSC) in symmetric structure is very narrow (≤0.6 V), which affects its practical application. Herein, a flexible asymmetric microsupercapacitor (AMSC) based on Ti 3 C 2 T x //polypyrrole (PPy)/MnO 2 is reported, where Ti 3 C 2 T x is deposited on graphite paper (GP) by electrophoresis method as negative electrodes, MnO 2 and PPy are electrochemically deposited on GP successively as positive electrodes, and polyvinyl alcohol/sulfuric acid (PVA/H 2 SO 4 ) as the quasi-solid electrolyte. This AMSC based on Ti 3 C 2 T x //PPy/MnO 2 operates at 1.2 V voltage window, which is two times wider than symmetric Ti 3 C 2 T x based MSC. And its maximum areal capacitance and areal energy density can reach up to 61.5 mF cm −2 and 6.73 µWh cm −2 respectively. Moreover, three above AMSCs in series connection can turn on three lights after being charged. And the AMSC also shows high flexibility under mechanical bending level (bending angle with 0°–180°). The flexible AMSC based on Ti 3 C 2 T x //PPy/MnO 2 with ultrahigh energy density is a promising candidate for exploiting and fabricating next-generation miniature integrated energy storage devices.
研究领域:
材料科学
·
能源存储技术
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Acta Biomaterialia
·
2023
·
IF 9.7
Yuelin Lv,Cuihong Chen,Liguo Jin,Yufeng Zheng,Shuilin Wu,Yu Zhang,Zhaoyang Li,Shengli Zhu,Hui Jiang,Zhenduo Cui,Xiangmei Liu
Owing to its deep penetration capability, microwave (MW) therapy has emerged as a promising method to eradicate deep-seated acute bone infection diseases such as osteomyelitis. However, the MW thermal effect still needs to be enhanced to achieve rapid and efficient treatment of deep focal infected areas. In this work, the multi-interfacial core-shell structure barium sulfate/barium [email protected] (BaSO 4 /BaTi 5 O 11 @PPy) was prepared, which exhibited enhanced MW thermal response via the well-designed multi-interfacial structure. To be specific, BaSO 4 /BaTi 5 O 11 @PPy achieved rapid temperature increases in a short period and efficient clearance of Staphylococcus aureus ( S. aureus ) infections under MW irradiation. After 15 min MW irradiation, the antibacterial efficacy of BaSO 4 /BaTi 5 O 11 @PPy can reach up to 99.61 ± 0.22%. Their desirable thermal production capabilities originated from enhanced dielectric loss including multiple interfacial polarization and conductivity loss. Additionally, in vitro analysis illuminated that the underlying antimicrobial mechanism was attributed to the noticeable MW thermal effect and changes in energy metabolic pathways on bacterial membrane instigated by BaSO 4 /BaTi 5 O 11 @PPy under MW irradiation. Considering remarkable antibacterial efficiency and acceptable biosafety, we envision that it has significant value in broadening the pool of desirable candidates to fight against S. aureus -infected osteomyelitis. Statement of significance The treatment of deep bacterial infection remains challenging due to the ineffectiveness of antibiotic treatment and the susceptibility to bacterial resistance . Microwave (MW) thermal therapy (MTT) is a promising approach with remarkable penetration to centrally heat up the infected area. This study proposes to utilize the core-shell structure BaSO 4 /BaTi 5 O 11 @PPy as an MW absorber to achieve localized heating under MW radiation for MTT. In vitro experiments demonstrated that the disrupted bacterial membrane is primarily due to the localized high temperature and interrupted electron transfer chain. As a consequence, its antibacterial rate is as high as 99.61% under MW irradiation. It is shown that the BaSO 4 /BaTi 5 O 11 @PPy is a promising candidate for eliminating bacterial infection in deep-seated tissues.
研究领域:
材料科学
·
生物医学工程
·
微生物学
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COMPOSITES SCIENCE AND TECHNOLOGY
·
2026
·
IF 9.9
Daming Gong,Minglun Lv,Jun Liu,Rui Liu,Yu Cui,Pengfei Ju,Fuhui Wang,Li Liu
With the rapid advancement of electromagnetic technologies, the development of high-performance electromagnetic wave (EMW) absorbing materials is crucial for mitigating radiation, reducing interference, and ensuring information security. In this work, a bioinspired multiscale strategy coupling macroscopic structural design with hierarchical interface engineering was proposed. A gyroid minimal surface was fabricated via high-precision Digital Light Processing (DLP) three-dimensional printing using graphene oxide incorporated photocurable resin to establish a conductive network and customized EMW propagation pathways. Subsequent in-situ growth of NiCo 2 O 4 and polypyrrole (PPy) introduced abundant heterogeneous interfaces and porous microstructures, which synergistically enhanced dielectric loss, magnetic loss, and interfacial polarization while optimizing impedance matching. Benefiting from these multi-level mechanisms, the composite exhibited outstanding broadband absorption performance at relatively small thicknesses. Experimental results demonstrated that the prepared PNGMM2 composite achieved a minimum reflection loss of -57.32 dB at 12.7 GHz with a thickness of 2.67 mm; an effective absorption bandwidth of 6.4 GHz was obtained at 2.42 mm, fully covering the Ku band; and complete coverage of the X band was realized at a thickness of 3.39 mm. This study demonstrates the effective integration of biomimetic architecture, interfacial engineering, and compositional design, offering a feasible pathway toward next-generation lightweight, broadband, and structurally robust EMW absorbers.
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SYNTHETIC METALS
·
2017
·
IF 2.435
Hongxiu Dai,Pengfei Cao,Duo Chen,Yuan Li,Nan Wang,Houyi Ma,Meng Lin
A nickel-cobalt-sulfide nanosheet (Ni-Co-S NS)/polypyrrole nanowire (PPy NW) core/shell-structured composites on nickel foam (NF) was synthesized by facile electrodeposition processes for electrochemical non-enzymatic glucose sensor. PPy NWs grew on the NF substrate by a potentiostatic deposition method, and then the PPy NWs were further served as skeletons for electrodeposition Ni-Co-S nanosheets. The ternary Ni-Co-S NSs as the shell and PPy NWs as the core on the flexible NF constructed the 3D micro/nano structure. The as-prepared Ni-Co-S/PPy/NF electrode was characterized by scanning electron microscopy (SEM) and energy-dispersive X-ray spectrometer (EDS). The electrochemical sensor was used for the detection of glucose by chronoamperometry. The introduction of the interconnected Ni-Co-S NSs can provide accessible pathways for electrolyte and have high sensitivity to glucose. Compared with the NF and PPy/NF electrodes, the Ni-Co-S/PPy/NF micro/nanohybrid electrode exhibited higher catalytic activity towards electro-oxidation of glucose. The developed Ni-Co-S/PPy/NF electrode showed two linear electrochemical responses to glucose in the range from 2 μM to 140 μM with a correlation coefficient of R 2 = 0.937 and 0.14 mM to 2 mM with a correlation coefficient R 2 = 0.978, and the detection limit is 0.82 μM. Furthermore, the prepared biosensor demonstrated high selectivity to glucose in the presence of uric acid, ascorbic acid and D-fructose.
研究领域:
材料科学
·
生物医学工程
·
分析化学
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Polymers
·
2022
·Vol. 14
·期 5
·859
·
IF 4.967
Xiujuan Wang,Xiaoyu Gao,Yu Wang,Xin Niu,Tanyu Wang,Yuanjun Liu,Fangxi Qi,Yaming Jiang,Hao Liu
In recent years, the research of flexible sensors has become a hot topic in the field of wearable technology, attracting the attention of many researchers. However, it is still a difficult challenge to prepare low-cost and high-performance flexible sensors by a simple process. Three-dimensional spacer fabric (SF) are the ideal substrate for flexible pressure sensors due to its good compression resilience and high permeability (5747.7 mm/s, approximately 10 times that of cotton). In this paper, Thermoplastic polyurethane/Polypyrrole/Polydopamine/Space Fabric (TPU/PPy/PDA/SF) composite fabrics were prepared in a simple in-situ polymerization method by sequentially coating polydopamine (PDA) and Polypyrrole (PPy) on the surface of SF, followed by spin-coating of different polymers (thermoplastic polyurethane (TPU), polydimethylsiloxane (PDMS) and Ecoflex) on the PPy/PDA/SF surface. The results showed that the TPU/PPy/PDA/SF pressure sensors prepared by spin-coating TPU at 900 rpm at a concentration of 0.3 mol of pyrrole monomer (py) and a polymerization time of 60 min have optimum sensing performance, a wide working range (0–10 kPa), high sensitivity (97.28 kPa−1), fast response (60 ms), good cycling stability (>500 cycles), and real-time motion monitoring of different parts of the body (e.g., arms and knees). The TPU/PPy/PDA/SF piezoresistive sensor with high sensitivity on a highly permeable spacer fabric base developed in this paper has promising applications in the field of health monitoring.Keywords:space fabric;Polypyrrole (PPy);piezoresistive sensors;thermoplastic polyurethane (TPU) coating
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