COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Naiku Xu,Xiangyuan Yan,Xuhai Zong,Nana Huang,Jian Zhao
The combination of GO decoration, PAA wet-spinning, Fe 3+ /Al 3+ co-coordination with PANI coating was adopted to fabricate mechanically applicable core-shell structured fiber. Since GO could rely on its abundant oxygen-containing functional groups to interact with the carboxylic groups of PAA through hydrogen bonding and esterification crosslinking, GO decoration was expected to enhance the mechanical properties and water resistance of PAA matrix. Thanks to PANI-adjusted Fe 3+ /Fe 2+ cycling, mass content of Fe 2+ in PANI-coated fiber reached 0.08%, increasing by 242% compared to that of fibrous core. After the third cycle, Fe 2+ mass content was 0.09% and higher than original content, and after 60 cycles, Fe 2+ mass content was still as high as 0.09%; thus the resulting fiber could quickly catalyze H 2 O 2 to mineralize 90% of MB during cyclic application. Due to strong PANI-induced iron ion-anchoring ability, iron ion leaching was only 0.36 mg/L during 60 cycles and less than 7% of that of fibrous core, so that the PANI-coated fiber could use its retained iron species to repeatedly decolorize MB at least 60 times. Since PANI shell could serve as an all-in-one locality to ensure Fe 3+ /Fe 2+ cycling, pollutant mineralization, and iron ion anchoring, the fiber prepared herein presented its own superiority in treating dye wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER TESTING
·
2021
·
IF 4.282
Xin-Hua Gao,Jing-Wen Wang,Da-Nian Liu,Xin-Zhu Wang,Hou-Qing Wang,Lei Wei,Hua Ren
Excellent dielectric properties are essential for electromechanical applications of dielectric elastomer. This work confirms that acrylic resin elastomer (AE)-based percolative composites using MXene (Ti 3 C 2 T x ) nanosheets modified with PANI (referred to as PANI-Ti 3 C 2 T x ) as conductive fillers exhibit improved dielectric performances. Ti 3 C 2 T x /AE and PANI-Ti 3 C 2 T x /AE composites with different filler contents were prepared, and their percolation threshold are 6.01 vol% and 6.43 vol%, respectively. The dielectric constant of 6.39 vol% PANI-Ti 3 C 2 T x /AE is 298 at 100 Hz, which 1.67 times that of 5.98 vol% Ti 3 C 2 T x /AE composites (178), and is 85 times that of the pure AE matrix (3.5). Moreover, the dielectric loss of 6.39 vol% PANI-Ti 3 C 2 T x /AE composite still maintains at a low level (0.29 at 100 Hz), which is lower than that of 5.98 vol% Ti 3 C 2 T x /AE composite (0.55 at 100 Hz). We suppose that the improved dielectric constant of PANI-Ti 3 C 2 T x /AE composites is attributed to the enhanced micro capacitors effect and Maxwell-Wagner-Sillars effect.
研究领域:
材料科学
·
机电工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 102
·100585-100589
·
IF 3.289
Haibo Yang,Ning Han,Ying Lin,Ge Zhang,Lei Wang
Polyaniline/CoFe2O4/polyvinylidene fluoride (PANI/CoFe2O4/PVDF) composites were synthesized by an in situ polymerization method. The electromagnetic data demonstrate that the PANI/CoFe2O4/PVDF composite exhibit an excellent microwave absorption in the range of 2.0–18.0 GHz. The maximum reflection loss (RL) value can reach −57.7 dB at 7.6 GHz with a thickness of 4 mm and the absorption bandwidth with the RL below −10 dB is up to 3.4 GHz (from 6.5 to 9.9 GHz), which indicates that the microwave absorbing properties of the PANI/CoFe2O4 composite can be enhanced by the introduction of PVDF and the PANI/CoFe2O4/PVDF composite has potential applications for high-efficient microwave absorbers.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 46
·26011-26019
·
IF 2.936
Ruili Wu,Haocheng Yuan,Chan Liu,Jin-Le Lan,Xiaoping Yang,Yuan-Hua Lin
The effects of polyaniline (PANI) with different polymerization times on the film-forming and thermoelectric properties as well as on the performance of SWCNTs/PANI composites were systematically investigated in this study. It was found that the film-forming and flexibility of PANI films improved with the increase in polymerization time. We showed that a super high conductivity of ∼4000 S cm−1 can be achieved for the SWCNTs/PANI composite film, which is the highest value for the SWCNTs/PANI system at present. Both the electrical conductivity and power factor increase by an order of magnitude than that of pure PANI films and far exceed the theoretical value of the mixture model. These results suggest that the sufficiently continuous and ordered regions on the interlayer between the filler and matrix are key to improve the electrical conductivity of composites. Finally, the maximum PF reaches 100 μW m−1 K−2 at 410 K for the 0.6CNT/PANI5h. Furthermore, it is found that the composite films have excellent environmental and structural stability. Our results can deepen the understanding of organic–inorganic thermoelectric composite systems and facilitate the practical application of flexible and wearable thermoelectric materials.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IONICS
·
2021
·Vol. 27
·期 9
·4083-4096
·
IF 2.817
Chen Qiuyang,Xie Fei,Wang Guoyu,Ge Kangkang,Ren Huifang,Yan Manqing,Wang Qiyang,Bi Hong
Conducting polyaniline (PANI) has been widely considered as a promising energy storage material with excellent electrochemical reversibility and high theoretical specific capacitance. Suffering from poor cyclic stability of PANI, here we demonstrate urchin-like molybdenum disulfide (MoS 2 ) with PANI as hybrid electrode materials (MoS 2 @PANI) via one-pot hydrothermal method. In our case, the electrostatic attraction and hydrogen bond interaction between MoS 2 and PANI synergically improve the structural integrity and specific surface area of the binary MoS 2 @PANI hybrids. Specifically, MoS 2 @PANI with 25 wt% MoS 2 (PM25) delivers a maximum capacitance of 645 F g −1 at 0.5 A g −1 with good cycling stability (89% capacitance retention after 2000 cycles at a current density of 10 A g −1 ). Compared to pure PANI (335 F g −1 ), the improvement of capacitive energy storage ability indicates that urchin-like MoS 2 @PANI hybrids with a stable morphology and unique structure are promising for hybrid supercapacitor materials.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITE INTERFACES
·
2020
·
IF 2.32
Zhanlei Li,Yanwei Sui,Jiqiu Qi,Fuxiang Wei,Yezeng He,Qingkun Meng,Yaojian Ren,Xuping Zhang,Zhenzhen Zhan,Zhi Sun
In this article, a novel supercapacitor electrode of pistil-like MnCo2O4.5@PANI nanorods supported by nickel foam with enhanced specific capacitance and cycle performance is fabricated through a facile method. Benefiting from the excellent electrical conductivity of the shell material PANI and the short ion transport path and high specific surface area of the MnCo2O4.5 nanorods, the electrode made of MnCo2O4.5@PANI exhibits a large specific capacitance of 1098 F g−1 at a current density of 1 A g−1. In addition, the MnCo2O4.5@PANI electrode also displays a superior cycling stability with 83.2% capacitance retention after 5000 cycles at a high charge/discharge current density of 10 A g−1 and an excellent rate performance of 61.45% at 10 A g−1. These results demonstrate that the prepared MnCo2O4.5@PANI composite electrode material has a great potential for advanced energy conversion and storage equipment.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 21
·59366-59381
·
IF 5.8
Xiong Huixin,Shi Kun,Han Jie,Cui Can,Liu Yang,Zhang Bailin
Discharge of the untreated dye-containing wastewaters will induce water source pollution and further harm aquatic organisms. In this study, the akaganéite/polyaniline catalyst (β-FeOOH/PANI, about 1.0 μm) could be successfully composed by polyaniline (PANI, (C 6 H 7 N) n , 200–300 nm) and akaganéite (β-FeOOH, FeO(OH) 1−x Cl x , less than 200 nm), according to the identification and characterization results of XRD, Ramon, FTIR, XPS, SEAD, EDS, and FESEM (or HRTEM). Due to PANI providing more photogenerated electrons, the β-FeOOH/PANI composite (compared with β-FeOOH) in photo-Fenton system had the more highly catalytic degradation capacity to Acid Orange II (AOII) under an optimal condition (7.5 mmol/L of H 2 O 2 oxidant, 40 mg/L of AOII, 0.2 g/L of catalyst dosage, and pH 4.0). The AOII degradation kinetics could be well fitted by pseudo-first-order model. In photo-Fenton catalytic process of AOII dye, the ∙OH and h + were the main reaction substances. The AOII in solutions could be gradually mineralized into non-toxic inorganic H 2 O molecule and CO 2 . The β-FeOOH/PANI catalyst also had a good reusable ability of about 91.4% AOII degradation after 4 runs. These results can provide a reference for synthesis of catalyst used in photo-Fenton system and the applications in degradation removal of organic dye from wastewaters.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Technologies
·
2017
·Vol. 2
·期 3
·1600282
·
IF 0
La Li,Zheng Lou,Wei Han,Di Chen,Kai Jiang,Guozhen Shen
Stretchable energy storage devices are required to fit for stretchable electronic devices, forming a fully stretchable system for comfortable and body-attachable electronic devices. Herein, highly stretchable micro-supercapacitors are fabricated by designing wave-shaped hybrid multiwalled carbon nanotubes/polyaniline electrodes. As-fabricated stretchable devices exhibit a large areal capacitance of 44.13 mF cm −2 and offer a power density of 0.07 mW cm −2 at an area energy density of 0.004 mW h cm −2 . Owing to the designed wavy electrode structure, the electrochemical performances of the stretchable micro-supercapacitors are almost invariably under different stretching stations ranging from 5% to 40%. By fabricating stretchable micro-supercapacitors arrays, a red light-emitting diode can be easily lighted under different conditions including stretching, twisting, crimping, and winding. All these results confirm the outstanding stability and mechanical strength of stretchable micro-supercapacitors, demonstrating its potential application in skin-patchable electronics or portable/wearable devices.
研究领域:
储能技术
·
柔性电子学
·
材料科学
·
纳米技术
✓ 已验证
DOI
APPLIED ORGANOMETALLIC CHEMISTRY
·
2018
·Vol. 32
·期 7
·e4411
·
IF 3.581
Xin Jin,Guangrong Liu,Chongzhuo Bao,Mingxin Chen,Qiang Huang
The high dispersion and stability of a nanocomposites suspension are required as a crucial factor in many of their applications. In this study, ZnO nanosheets covered with polyaniline (PANI) thin layer (ZnO@PANI) were synthesized by a simple in-situ polymerization. The as-prepared ZnO@PANI powders were well characterized by XRD, Raman, FTIR, XPS and photoluminescence spectra, as well as SEM and TEM techniques. The effect of PANI incorporation on the chemical dissolution and dispersing stability of ZnO aqueous suspension was investigated. Dissolution experiments showed that the dissolution of ZnO was effectively restrained by the surface-hybridized PANI layer. ZnO@PANI suspension can be more stable in a wider pH range. Dynamic Light Scattering (DLS) analysis indicated that ZnO@PANI particles were thoroughly dispersed in the neutral and alkaline solution as proven by the emergence of a single distribution with a high diffused intensity. Sedimentation experiments suggested that ZnO@PANI suspension was a more stable dispersion taking into account the effect of pH and ionic strength.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2022
·Vol. 28
·期 3
·1073-1080
·
IF 2.961
Han Jia-Jun,Guo Ao-Ran,Wang Yan-Fang
Polyaniline (PANI) was synthesized by adsorption double oxidizer method, and then reduced with N 2 H 4 ·H 2 O (r-PANI), doped with HClO 4 (d-PANI). PANI with different states was combined with lithium iron phosphate (LiFePO 4 ) in water-based slurry to form PANI/LFP composites. Some physical characterization methods (Fourier transform infrared spectroscopy analysis, scanning electron microscope) were used to analyze the morphology and structure of the composites. The electrochemical properties were characterized by cyclic voltammetry, impedance spectroscopy, galvanostatic charge/discharge, and rate capability. The specific capacity of the r-PANI/LFP composite reached 154 mAh/g, which was 4.1% higher than that of pure LFP, and the coulombic efficiency of the battery was close to 100%. Under the higher discharge rate conditions, the r-PANI/LFP composite still released a good reversible capacity. Moreover, the cyclability and rate capability of the r-PANI/LFP composites are better than that of pure LFP.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2011
·Vol. 18
·期 5
·1467-1475
·
IF 5.476
Chenglong Hu,Yujie Chen,Xudong Chen,Bin Zhang,Jin Yang,Juying Zhou,Ming Qiu Zhang
Graphical Hybrid materials : The internal micro-magnetic field (IMMF) effect in Fe 3 O 4 @PANI-CdS photoelectric active hybrid nanocomposites was found to improve their power conversion efficiencies ( PCE ) by increasing the number of singlet polaron pairs through field-dependent intersystem crossing (ISC). The PCE of as-prepared nanocomposites was improved from 1.135 to 3.563 % with changes in IMMF from 0 to 1.2×10 −3 emu g −1 (see figure). In this paper, the effect of the internal micro-magnetic field (IMMF) on the photocurrent property of conjugated polymer/inorganic semiconductor nanocomposites is reported and analyzed. By using the redox reaction, magnetic Fe 3 O 4 nanoparticles were coated on the surface of highly active nanorods of conjugated polyaniline (PANI), forming an internal micro-magnetic electron donor (i.e., Fe 3 O 4 @PANI). After subsequent incorporation of CdS nanoparticles (serving as electron acceptors), the power conversion efficiency ( PCE ) of the system (Fe 3 O 4 @PANI-CdS) was found to be as high as 3.563 %, contrasting sharply with the value (1.135 %) of the hybrid without Fe 3 O 4 (PANI-CdS). This obvious enhancement originated from the fact that the IMMF increased the number of singlet polaron pairs through field-dependent intersystem crossing (ISC), giving a positive contribution to the photocurrent generation. Additionally, the dependence of the photocurrent on the remnant magnetization of the Fe 3 O 4 @PANI-CdS nanocomposites was investigated. A percolation behavior was observed, which was due to the appearance of interpenetrating networks consisting of donor and acceptor phases, leading to the recombination of charge carriers through trapping. The outcomes of the present work might help to produce a new family of conjugated organic/inorganic semiconductor nanocomposites with designed optoelectronic performances.
研究领域:
材料科学
·
光电子学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）