JOURNAL OF ELECTRONIC MATERIALS
·
2024
·Vol. 53
·期 8
·4601-4612
·
IF 2.2
Shao Zhongjie,Liu Yaning,Cai Peng,Wang Qiyue,Xiao Zhen,Zhang Lihui,Tong Bo,Wang Bingjia,Zhao Yong,Zhang Wenkui,Xia Yang
Carbon-based conductive polymer composites have attracted wide attention as candidates for high-performance flexible electric heaters. Herein, a poly(m-phenylene isophthalamide) (PMIA)/carbon black (CB) composite is proposed as electric heating films that can successfully realize stable and safe operation at high temperatures of > 200°C under a safe voltage as low as 20 V. The conductive filler content has a significant effect on the microstructure and electrical properties of the PMIA/CB composites. An optimized CB content of 20 wt.% in the PMIA polymer matrix not only guarantees uniform spatial dispersion, but also provides sufficient and stable conductive networks. As a result, the PMIA/CB composites present high heating temperature, rapid heating ability, good heating uniformity, and excellent heating reliability. Meanwhile, taking advantage of the high thermal stability, superior mechanical strength, and excellent flame retardancy of the PMIA polymer matrix, the PMIA/CB composites exhibit superior thermal endurance and self-extinguishing capabilities, leading to significantly enhanced operating safety. This study will open new avenues for the development of high-performance electrothermal composite films for medium- to high-temperature applications. Graphical Abstract
研究领域:
材料科学
·
高分子化学
·
热能工程
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Junwei Ding,Jiaqi Han,Dongfang Ji,Lifeng Han,Kang Zhao,Hewei Luo,Shide Wu,Shiwen Wang,Shaoming Fang
Aqueous zinc-iodine batteries (AZIBs) have broad application prospects in large-scale energy storage due to their intrinsic safety, high energy/power density, and low cost. However, the iodine cathode still faces challenges such as shuttle effect and slow conversion kinetics. Herein, the tungsten-regulated metal-phase vanadium dioxide (W-VO 2 (M)) is proposed to improve the whole performance of AZIBs. First, a heat-treatment method is applied to achieve the phase transition to prepare W-VO 2 (M) from the precursor of the tungsten introduced B-phase vanadium dioxide. Via various characterizations, the successful tungsten introducing is confirmed by occupying the vanadium position and forming the tungsten-oxygen bond in the VO 2 (M) lattice. The obtained W-VO 2 (M) is used as the functional separator modifier of AZIBs, which deliver high capacity, superior rate performance, and long-cycling stability. Specifically, the capacity is 133.8 mAh g −1 after 500 cycles at 1 C. When at 3, 5, 7, 10 C, the corresponding capacities are 127.6, 115.9, 106.5, and 95.5 mAh g −1 , respectively. The battery can stably work 5000 cycles at 10 C. A series of analyses suggest that the W-VO 2 (M) can inhibit shuttle effect and accelerate the iodine conversion kinetics via the adsorbing and anchoring of iodine species. This research provides a new perspective for advanced AZIBs.
研究领域:
材料科学
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电化学
·
能源存储
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DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2025
·
IF 2
Xuekai Shan,Didi Lu,Peihang Wang,Zhuqiu Sun,Bairen Yang
Selenium(IV) (Se(IV)) supplementation was evaluated as a biostimulant to enhance m-dichlorobenzene (m-DCB) biodegradation in laboratory-scale biotrickling filters (BTFs) inoculated with Brevibacillus agri DH-1. An optimal Se(IV) concentration of 4.0 mg/L increased steady-state m-DCB removal efficiency from 74.38% to 81.74% at an empty bed residence time (EBRT) of 90 s. When the EBRT was reduced to 30 s, BTF2 maintained a 41.74% removal efficiency, compared with only 17.64% for BTF1. Se(IV) promoted extracellular polymeric substance production, strengthened biofilm adhesion, enhanced catechol-1,2- and catechol-2,3-dioxygenase activities, and moderated surface charge to favour microbial aggregation. Fourier-transform infrared spectroscopy confirmed Se(IV)-facilitated dechlorination and aromatic-ring cleavage, while 16S rRNA sequencing revealed enrichment of key degraders including Brevibacillus, Pseudomonas, Bacillus, Rhodanobacter, and Sphingobium. These findings demonstrate a novel micronutrient-based strategy to improve BTF performance for treating chlorinated aromatic exhaust gases.
研究领域:
环境工程
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生物修复
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微生物技术
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空气污染控制
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环境微生物学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Guijuan Liu,Xiao Xiao,Jie Wang,Yao Liang,Zhenrong Zhou,Weixing Li
The development of ethanol dehydration membranes with superior separation performance and long-term stability is an essential objective for pervaporation. HOF-21 with pore size of 3.6 Å could make way for water transportation while rejecting ethanol molecules. Here, amine-modulated HOF-21 (HOF-21-a) was proposed to dope into the sodium alginate (SA) separation layer on the polyacrylonitrile (PAN) substrate for ethanol dehydration. Molecular simulation results confirmed the superior water permeance of the HOF-21-a membrane. To enhance the interfacial bonding strength, polyethyleneimine (PEI) and catechol (CT) were coated onto the PAN substrate and crosslinked to form a robust network between the top separation layer and the support layer. The novel HOF-21-a@SA/M-PAN membrane, incorporating a hydrogen-bonded organic framework, was designed for efficient ethanol dehydration. Experimental results demonstrated that the prepared composite membrane exhibited excellent separation performance at a PEI/CT mass ratio of 1:1 and a HOF-21-a loading of 1.0 wt%. Specifically, the permeate flux increased significantly from 606 g·m −2 ·h −1 to 2389 g·m −2 ·h −1 with the separation factor improved from 153 to 2267 at 75 °C. Additionally, the composite membrane demonstrated outstanding long-term stability. The newly developed membrane offers a promising solution for organic solvent dehydration.
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Ruida Cao,Long Yang,Wenbo Hu,Biao Dong,Hongwei Song,Lin Xu
Underwater communication using triboelectric nanogenerators (TENGs) offers key benefits such as independence from external power sources and immunity to water conditions, but faces challenges like short transmission range and single-mode operation. This study presents a flexible, bifunctional Janus film as a high-performance TENG for long-distance underwater signal transmission. The PEDOT:PSS-doped charge-generating layer minimizes charge dissipation, while the PEDOT:PSS and BaTiO₃ enriched charge-trapping layer enhances retention, ensuring robust performance in both contact and non-contact modes. Dual-mode transmission supports underwater tasks such as wireless switching, communication, charging, and gesture recognition with 94.84% accuracy. Remarkably, gesture signals transmitted over 200 m through a water pipe set a record for Maxwell's displacement current-based communication. Additionally, a smart rescue system demonstrates the non-contact mode's ability to self-power SOS signal transmission through water pipes in emergency scenarios, unaffected by water quality or pipe shape. This work expands TENG applications in self-powered, long-range underwater communication.
研究领域:
能量收集
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水下无线通信
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柔性电子学
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自供能传感器
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人机交互
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Yudi Wang,Jialong Duan,Yuanyuan Zhao,Xiya Yang,Qunwei Tang
Developing efficient and cost-effective counter electrodes (CEs) to catalyze triiodide reduction reaction is a persistent objective for high-performance dye-sensitized solar cells (DSSCs). One promising solution is to design electron-enriched electrode materials by combining conductive polymers with alloys. In this work, ternary hybrid PtM@polyaniline (M = Ni, FeNi) CEs are synthesized by one-step replacement reaction and in-situ polymerization reaction. When assembling into liquid-junction DSSCs, the power conversion efficiencies of 8.52% and 8.39% for the devices tailored with PtNi@polyaniline and PtFeNi@polyaniline CEs can be obtained. The experimental results demonstrate that the enhanced photovoltaic performances are mainly attributed to matching work function and high electrocatalytic activity of these well-designed hybrid CEs. Arising from the competitive reactions between transition metal and I 2 /I 3 − species, the dissolution reaction of Pt in liquid electrolyte is restricted and therefore the long-term stability of corresponding devices are significantly enhanced.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2013
·
IF 5.008
Shaotang Li,Yamei Li,Meng Jiang,Shidong Ji,Hongjie Luo,Yanfeng Gao,Ping Jin
Nanofibers of VO2(A) with the diameter and length averagely at 100 nm and 10–20 μm were prepared via a facile one-step hydrothermal method by reducing NH4VO3 with 1,3-propylene glycol in an acidic solution. The obtained VO2(A) was coated by SiO2 to form VO2(A)@SiO2 core–shell nanocomposites, which were then transformed into VO2(M)@SiO2 by annealing under nitrogen atmosphere. The resulted composites maintained the original fibrous morphology, particularly with a large amount of pores emerging inside the fiber due to the volume shrinkage during the phase transition, which may improve its thermal insulation ability in real applications. The VO2(M)@SiO2 nanofibers were arranged into a self-supporting film by filtration, which shows excellent thermochromic properties.
研究领域:
材料科学
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纳米技术
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智能材料
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热致变色
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DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2020
·Vol. 82
·期 3
·492-502
·
IF 1.638
Wei Jinyu,Hu Huayu,Zhang Yanjuan,Huang Zuqiang,Liang Xingtang,Yin Yanzhen
In this work, a user-friendly chitin-based adsorbent (CT-PmPD) was synthesized by in-situ polymerization of m-phenylenediamine on chitin bead, which could effectively remove Cr(VI) from water. The structure and morphology of the CT-PmPD were characterized by FT-IR, XRD, SEM, zeta potential and XPS. Specifically, the effect of adsorbed dosage, pH, contact time, adsorption temperature and coexisting salt on the adsorption of Cr(VI) were studied. Besides, the adsorption mechanism of CT-PmPD toward Cr(VI) were also analyzed. Consequently, CT-PmPD exhibited a monolayer adsorption and the Langmuir model fitted a Cr(VI) adsorption capacity reaching 185.4 mg/g at 298 K. The high adsorption capacity was attributed to the abundant amino groups of CT-PmPD, which could be protonated to boost the electrostatic attraction of Cr(VI) oxyanions, thus providing electron to reduce Cr(VI). Additionally, the CT-PmPD revealed a good regeneration and reusability capacity, maintaining most of its adsorption capacity even after five cycles of adsorption-desorption. This high adsorption capacity and excellent regeneration performance highlighted the great potential of CT-PmPD for the removal of Cr(VI).
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2016
·Vol. 41
·期 2
·685-691
·
IF 3.277
Kaisi Liu,Bin Yao,Yongfeng Li,Zhanhui Ding,Zhenyu Xiao,Yuhong Jiang,Gang Wang,Daocheng Pan
Cu2CoSnS4 (CCTS) and Cu2NiSnS4 (CNTS) can be regarded as Cu2ZnSnS4 compounds with the Zn2+ replaced by Co2+ and Ni2+, and are alternative absorber materials in thin film solar cells. Here, we fabricated high-quality CCTS and CNTS nanocrystal thin films by employing the ion substitution strategy. We systematically studied the crystal structures, surface morphologies and compositions of the as-prepared and selenized thin films via X-ray diffractometry (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The selenized CCTS and CNTS films showed an obvious phase separation process for the oxidizing reaction of Co2+ and Ni2+ with high-temperature selenium steam, and then formed Cu2Sn(S,Se)3, Co(S,Se)2 and Ni(S,Se)2 compounds. We successfully fabricated photodetector devices using CCTS and CNTS nanocrystal films, and achieved a strong and reversible photoresponse performance.
研究领域:
材料科学
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半导体物理
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薄膜器件
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光电探测
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DOI
高影响因子
METHODS
·
2021
·
IF 3.608
Menglu Hu,Debin Zhu,Xiaoming Zhou
The construction of a rapid, simple, and specific nucleic acid detection platform is of great significance to the control of the large-scale spread of infectious diseases. We have recently established a magnetic pull-down-assisted colorimetric method based on the CRISPR/Cas12a system (termed M−CDC), which effectively integrates the advantages of CRISPR/Cas12a, magnetic beads-based separation, and AuNP bioprobe to provide a simple and specific biosensing platform for nucleic acid assay. The M−CDC method is compatible with point-of-care testing and enables the detection of nucleic acid samples in less than an hour without relying on expensive and complex instruments. In this paper, step-by-step instructions for M−CDC assay, including recombinase polymerase amplification (RPA)/reverse transcription-polymerase chain reaction (RT-RPA) of DNA or RNA, Cas12a-mediated target recognition and cleavage, and subsequent magnetic beads-mediated colorimetric readouts are provided. In addition, the protocol for the expression and purification of Lachnospiraceae bacterium -Cas12a (LbCas12a) protein, the design and synthesis of high-efficient crRNA, and the preparation of AuNP bioprobe are also offered.
研究领域:
生物技术
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分子生物学
·
诊断方法
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
Nature Communications
·
2025
·
IF 15.7
Yang Feifei,Li Chengyu,Wang Maolin,Yu Shixiang,Zhao Jiankang,Xu Yao,Zhou Wei,Yi Xiaodong,Ma Ding
Hydrodeoxygenation (HDO) of phenolics is crucial for lignin-to-fuel production via fast pyrolysis. The reaction under atmospheric H 2 pressure offers compatibility with pyrolysis conditions, high aromatic selectivity and low H 2 consumption, but suffers from coking-induced catalyst deactivation. In this work, we report a TiO x -decorated NiSn/SiO 2 catalyst (Ti-NiSn/SiO 2 ), achieving 100% deoxygenation selectivity and enhanced stability in m -cresol HDO. The superior performance stems from: (i) the interfacial synergy between TiO x and NiSn alloy that facilitates C-O bond cleavage with a reduced energy barrier; (ii) the geometric isolation and electron-donating properties of Sn, which suppress undesirable side reactions and mitigate coke formation; and (iii) the inverse TiO x decoration strategy, which enables effective interface chemistry while minimizing acidic sites that could otherwise accelerate coking. This study presents a design strategy for constructing inverse oxide–alloy interface catalysts, offering multi-faceted advantages for HDO and other complex catalytic transformations.
研究领域:
催化化学
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可再生能源
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生物质转化
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材料化学
·
多相催化
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产品关联
DOI
PubMed
高影响因子
Journal of Superconductivity and Novel Magnetism
·
2024
·Vol. 37
·期 4
·667-675
·
IF 1.6
Wu Diandian,Liu Xiansong,Han Yuyan,Feng Shuangjiu,Lv Qingrong
A sample of Y 2.85 Ca 0.15 Sn 0.08 Ti 0.05 Mn 0.07 Fe 4.8 O 12 doped with four different ions was prepared using the solid method and a subsequent procedure. X-ray diffraction (XRD), energy-dispersive X-ray (EDX), and scanning electron microscope (SEM) were used to analyze the sample’s structural features, elemental distribution, and surface morphology. The study used the B-H magnetic characteristic analyzer and superconducting quantum interferometer magnetic performance measurement system to analyze the magnetic properties of Y 2.85 Ca 0.15 Sn 0.08 Ti 0.05 Mn 0.07 Fe 4.8 O 12 . The correlation becomes more surprising as the frequency increases, indicating a decrease in permeability when the magnetic field H reaches 200 A/m. Ion substitution leads to changes in magnetic crystal anisotropy, affecting permeability as the external magnetic field strength increases. We analyze the correlation between saturation magnetization and temperature in the 520–540 K range and explain the variation of saturation magnetization with temperature. The study shows that saturation magnetization decreases as temperature increases. This result suggests that saturation magnetization decreases as temperature increases. The increased super-exchange effect due to Ti and Mn occupying the (d) sites is much stronger than the reduced effect caused by Sn occupying the (a) sites. Therefore, the saturation magnetization of the Y 2.85 Ca 0.15 Sn 0.08 Ti 0.05 Mn 0.07 Fe 4.8 O 12 sample is higher than that of the undoped sample. The Curie temperature (Tc) of the Y 2.85 Ca 0.15 Sn 0.08 Ti 0.05 Mn 0.07 Fe 4.8 O 12 sample is lower than that of the undoped sample.
研究领域:
材料科学
·
凝聚态物理
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功能材料
·
磁性材料
·
无机非金属材料
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DOI
高影响因子
危险品化学品经营许可证（带存储）