MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Nan Wang,Shangming Huang,Hanwei Cai,Xidong Lin,Riguo Mei,Ning Wang
Due to the toxicity of heavy metal ions which impacts on public health and the environment, the development of effective methods of detection has assumed a high priority. In this study, we have established an electrochemical sensor based on a CoCu-MOF/polyaniline (CoCu-MOF/PANI) sensing electrode that can simultaneously detect Pb 2+ and Cd 2+ in water samples. The CoCu-MOF/PANI composite was prepared by a one-step in situ polymerization method and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). The Pb 2+ and Cd 2+ content was detected by differential pulse voltammetry (DPV) at an optimized pH (4.5). The proposed electrochemical sensor has achieved simultaneous Pb 2+ and Cd 2+ detection down to 0.39 ug/L (Pb 2+ ) and 0.61 ug/L (Cd 2+ ). Anti-interference and reproducibility experiments have been conducted. In spiking experiments, the recovery of Pb 2+ and Cd 2+ in water samples ranged from 98.6% to 102.13%, indicating effective targeted electrochemical sensing. This work has delivered a functional design of CoCu-MOF/PANI materials, and established an efficient methodology for heavy metal ion detection.
研究领域:
环境科学
·
材料科学
·
分析化学
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DOI
高影响因子
Materials Today Chemistry
·
2024
·
IF 6.7
Lili Du,Jihui Hu,Mingxia Duan,Ji Ma,Zhijie Chen,Chuyuan Cui,Hao Chen,Ping Qiu
The deficiency in ion barrier capability, leading to coating failure, is a tough issue for corrosion-resistant coating. Inspired by the corrosion resistance of stainless steel, our team propose a modified p/n polyaniline heterojunction coating for carbon steel. This structure produces the built-in electric field at the p/n junction, causing cations and anions to accumulate only on either side of the depletion region, creating an effective barrier against charge transfer. The structure and morphology of the fillers are analyzed using SEM, TEM, FT-IR, and Raman spectroscopy, while their electronic structure is investigated through Mott-Schottky tests and their ion selectivity is verified through membrane potential testing. The protective performance of coating is evaluated via electrochemical impedance spectroscopy (EIS) and salt spray tests. Results show that after 200 days of immersion, the impedance modulus |Z|@ 0.01 Hz of the p/n-PANI Coating remains at 10 10 Ω cm 2 , four orders of magnitude higher than Pure PUA. The pull-off test indicates the p/n-PANI Coating achieves the highest adhesion strength at 11.55 MPa after immersion in 3.5 wt% NaCl solution for 200 days. Further analysis of the ion impermeability of coatings using SEM and EDS reveals its exceptional protective mechanism. Overall, these findings highlight the potential of p/n-PANI Coating for marine oil and gas equipment, offering promising long-term anti-penetration and corrosion resistance.
研究领域:
材料科学
·
防腐蚀工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Hongwei Zhou,Mingcheng Wang,Xilang Jin,Hanbin Liu,Jialiang Lai,Haotian Du,Weixing Chen,Aijie Ma
Highly sensitive capacitive-type pressure sensor has been achieved by fabricating reliefs on solution-processable hydrogel electrodes. Hybrid PVA/PANI hydrogels (PVA, poly(vinyl alcohol); PANI, polyaniline) with a fully physically cross-linked binary network are selected as the electrodes of the pressure sensors. On the basis of the solution processability, reliefs are fabricated on the surface of PVA/PANI hydrogel electrodes by a template method. The gauge factor (GF) is enhanced by introducing reliefs and regulated by controlling the composition and relief dimension of hydrogel electrodes. The optimized pressure sensor containing reliefs achieves the highest GF of 7.70 kPa–1 and a sensing range of 0–7.4 kPa. Furthermore, the freezing and drying problems of the hydrogel sensors are overcome by introducing a binary solvent of water/glycerol and the pressure sensing ability at −18 °C has been achieved. Finally, monitoring of various pressures in daily life, such as joint bending, blowing, and brush writing, is demonstrated using such pressure sensors.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 33
·2145
·
IF 2.8
Wu Zhirou,Zhang Rong,Huang Muyang,Li Bingwei,Li Jun
In this paper, ReS 2 /PANI composites were fabricated using a simple ultrasonic dripping method. A hybrid material was formed through the interaction between the p-type conductive polymer PANI and the n-type ReS 2 . This structure improved the utilization of photogenerated carriers and enhanced the photodetection performance. The ReS 2 /PANI-based PDs exhibited a maximum responsivity of 27 μA/W under simulated light illumination at 0 V bias, with a response time of approximately 0.42 s. The responsivity was approximately one order of magnitude higher than that of PDs constructed with ReS 2 alone, and the response time was reduced from 5 s to 0.42 s. Under illumination with different wavelengths of light, the light absorption was strongest at the ultraviolet wavelength of 365 nm, where a peak responsivity of 60 μA/W was even reached. This work demonstrates the potential of the ReS 2 /PANI heterostructure for developing self-powered photodetectors with promising optoelectronic properties and robust stability, providing a reference for further research in this field.
研究领域:
材料科学
·
光电子学
·
纳米技术
·
半导体器件
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产品关联
DOI
高影响因子
COLLOID AND POLYMER SCIENCE
·
2013
·Vol. 292
·期 3
·653-660
·
IF 2.161
Luo Jing,Zhou Qun,Sun Jun,Liu Ren,Liu Xiaoya
Well-defined water-dispersible polyaniline (PANI) nanoparticles were synthesized by in situ chemical oxidative polymerization of aniline in the presence of an amphiphilic P(AMPS- co -VM) copolymer micelle. P(AMPS- co -VM) copolymer was prepared by the free radical polymerization of 7-(4-vinylbenzyloxyl)-4-methyl-coumarin (VM) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) which can self-assemble into micelles in aqueous solution. Here, P(AMPS- co -VM) copolymer micelle is used not only as soft template but also as acid dopant in our reaction system. The structure, size, and morphology of PANI nanoparticles were characterized by various experimental techniques. It is found that the morphology and the size of the PANI nanoparticles strongly depend on the molecular characteristics of the P(AMPS- co -VM) copolymer. The synthesized PANI nanoparticles behaved as particulate emulsifier for the stabilization of oil-in-water emulsions.
研究领域:
材料科学
·
化学工程
·
纳米技术
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DOI
高影响因子
ACS Applied Polymer Materials
·
2019
·
IF 0
Jiawei Liu,Jiahui Liu,Feiyang Ma,Jiguang Liu
Particles with circumstance-responsive conductivity have an appealing performance in constructing sensors. Here, “smart” conducting polyaniline-doped poly(styrene-co-N-isopropylacrylamide) composite spheres, i.e. PANI/P(St-NIPAM) particles, are reported. A series of PANI/P(St-NIPAM) particles can be prepared with different ratios of N-isopropylacrylamide to monomers, i.e. N/M ratios. With the improved N/M ratios in polymerization, the amount of polyaniline (PANI) incorporating into the produced particles increased, resulting in an enhanced conductivity. With the improved N/M ratios, the hydrodynamic diameters of PANI/P(St-NIPAM) particles increased at a low temperature, whereas they decreased at a high temperature; resulting in the enhanced volume-change ability with the increasing poly(N-isopropylacrylamide) (PNIPAM) content in particles. Depending on the temperature-induced volume change, these particles exhibit “smart” conductivity in a homemade device, in which these particles can be used as a temperature-responsive conducting medium to construct an “on–off” circuit, and the switch of an LED lamp can be triggered by temperature. These particles with the smart conducting property provide wide potential applications in sensors, microelectronics, energy storage, and other fields.
研究领域:
材料科学
·
传感器技术
·
高分子化学
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DOI
ACS Applied Nano Materials
·
2026
·
IF 5.8
Chen Xiangxiang,Liu Zihui,Ding Guoxin
To meet the demand for high-efficiency electromagnetic
wave absorbing
materials, this work presents a ternary nanoscale composite with a
glass microsphere@NiFe 2 O 4 @PANI (GM@NiFe 2 O 4 @PANI) core–shell architecture. The fabrication
employs a strategy that combines interfacial cooperation with morphological
inheritance. XRD and XPS analyses confirmed the formation of spinel
nickel ferrite (NiFe 2 O 4 ) as the dominant phase,
with a minor amount of coexisting NiO, and a successful polyaniline
(PANI) coating. SEM revealed that NiFe 2 O 4 inherits
the nanoflower-like morphology of its NiFe-LDH precursor, with ultrathin
nanosheets uniformly anchored on the glass microsphere surfaces. The
incorporation of PANI preserves this nanoscale porous structure while
introducing additional heterojunction interfaces. The optimized GNFOP-6
composite achieves ideal impedance matching at a thickness of 2.35
mm, delivering an exceptional minimum reflection loss of −68.35
dB and a broad effective absorption bandwidth of 6.40 GHz. The nanoflower-like
NiFe 2 O 4 enhances magnetic loss through natural
resonance and promotes multiple scattering via its nanoscale porous
architecture. Meanwhile, the conductive PANI shell contributes to
attenuation through conduction loss and dipole polarization. By synergistically
optimizing dielectric and magnetic losses, this nanoscale core–shell
design shows strong potential for electromagnetic protection in advanced
communication systems and radar stealth.
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DOI
高影响因子
Materials Today Chemistry
·
2026
·
IF 7.4
Qiaozhi Miao,Lingjing Meng,Yue Yin,Yunfei Cai,Yonglong Zhang,Feiyan Yang,Chaoyu Zhang,Fang Guo,Jinfang Wu,Wenbo Wang
Stimuli-responsive active corrosion protection coatings serve as both an effective physical barrier and an active corrosion protection system for metallic substrates. However, their long-term performance is typically limited by the irreversible release of inhibitors and a restricted loading capacity, which hinders their repeated active corrosion protection capability and sustained durability. To address these limitations, we have developed a smart dual-stimuli-responsive active corrosion protection coating (denoted as MSNs-BTA@PANI/PVB) by encapsulating benzotriazole (BTA) within mesoporous silica nanocontainers (MSNs) coated with a polyaniline (PANI) shell. PANI, serving as a reversible molecular switch responsive to pH and redox conditions, enables controlled BTA release, ensuring sustained corrosion inhibition and prolonged service life. UV-vis spectroscopy revealed that in 3.5 wt% NaCl solution, minimal surface-adsorbed BTA was released from MSNs-BTA@PANI nanocontainer under pH change, whereas 0.54 mmol L − 1 release was triggered upon N 2 H 4 . After 50 days of immersion, EIS results showed that the coating containing 0.5 wt% MSNs-BTA@PANI achieved a |Z| 0.01Hz value of 1.14 × 10 5 Ω cm 2 , nearly seven times higher than that of the 0.5 wt% MSNs/PVB coating. This enhancement stems from the synergy between the physical barrier effect of MSNs and the dual-stimuli-triggered release of BTA, enabling effective localized corrosion inhibition. This work provides a reversible and controllable active protection strategy based on dual-responsive nanocontainers for designing durable intelligent corrosion protection coatings.
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DOI
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 10
·1-12
·
IF 5.3
Chen Jing,Xue Wenli,Shi Yaqin,Liu Wenjing,Ma Rongfang
An electrochemical sensor based on MXene/PANI/SnO 2 nanomaterials was developed for the detection of 4-aminophenol (4-AP). In situ oxidative growth of PANI on the MXene surface effectively hindered the stacking of the lamellae and increased the specific surface area of the composites. Further complexation of tin dioxide with swelling properties of the structure provided adsorption and catalytic sites for 4-AP. The prepared electrochemical sensor displayed good Linearity in the concentration range 0.50 ~ 115.38 µM and low detection limit (LOD = 0.19 µM). The sensor also had good reproducibility and stability. The MXene/PANI/SnO 2 /GCE sensor was applied to the determination of tablets and Yellow River water, and expressed high recoveries and low relative standard deviations. Graphical
研究领域:
电化学传感
·
纳米技术
·
分析化学
·
环境监测
·
药物分析
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Rui Li,Yuzhang Liang,Hui Zhang,Xinran Wei,Dmitry Sergeevich Bayko,Yurui Fang,Wei Peng
Reconfigurable precision regulation of structural color devices is a critical step toward versatile advanced functionality and broadening application scenarios. In this work, we demonstrate the precise manipulation of red, green, and blue, three primary colors generated by the five-layer nanocomposite coatings composed of polyaniline/indium tin oxide/titanium/titanium dioxide/titanium (PANI/ITO/Ti/TiO2/Ti). The modulation of dynamic structural colors of the proposed multilayer coatings originates from a cooperative interaction between the top PANI conductive polymer and the bottom traditional four-layer structural color consisting of ITO/Ti/TiO2/Ti. Specifically, the three primitive colors are first achieved by three different combinations of both TiO2 and ITO thicknesses, and then each color is modulated precisely by an intrinsic color change of the top PANI conductive layer at various voltages. As a result, the nanocomposite coatings demonstrate millisecond response time, excellent durability over 100 cycles, driving voltages below 1 V, and a wide temperature tolerance range from 5 to 60 °C. Additionally, centimeter-scale R, G, and B letter-shaped samples are fabricated using a mask plate coating technique, showcasing color modulation in patterned samples. Our work offers a straightforward strategy to realize the dynamic manipulation of the three primary colors within a certain range, which lays a solid foundation for the development of dynamic display technologies, such as dynamic paintings and e-books.
研究领域:
材料科学
·
光学工程
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产品关联
DOI
PubMed
高影响因子
CATALYSIS COMMUNICATIONS
·
2019
·
IF 3.674
Xiulun Sun,Xinjie Liu,Rongmei Liu,Xueying Sun,Anran Li,Wen Li
We reported a new and facile synthesis route to prepare polyaniline (PANI) nanowire@Co-Fe LDHs nanosheets in two steps. The PANI@Co-Fe LDHs has excellent OER activity with a small overpotential of 261 mV at the current density of 10 mA·cm −2 and a small Tafel slope of 67.85 mV·dec −1 . The PANI@Co-Fe LDHs also has long-term performance and stability. The excellent electrocatalytic performance of the catalyst depends on the good electrical conductivity of PANI and the effect of the two-dimensional (2D) layered structure of Co-Fe LDHs. The work opens a new application for energy storage and conversion.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Wang Zhiqin,Li Wei,Xiao Ningyu,Wang Chenxing
Conductive hydrogels show great potential for flexible sensors, yet their applications are limited by low strength, poor freeze resistance, and easy dehydration. To address these issues, this paper developed a multifunctional PVA (polyvinyl alcohol)/CMC (carboxymethyl cellulose sodium)/PANI (polyaniline)/PA (phytic acid)/BA (boric acid)/Fe 3+ hydrogel (denoted as PMNF) with a double-network structure formed via the Hofmeister effect and in situ polymerization. The hydrogel exhibits excellent mechanical properties (tensile strength: 236 kPa; elongation: 541%), high conductivity (2 S/m), and improved antifreezing behavior. At −12°C, it retains a conductivity of 0.86 S/m and over 300% elongation. It also demonstrates strong water retention after 15 days and stability in acidic/alkaline salt environments. Based on these properties, PMNF-based sensors reliably detect both subtle and large human motions under various conditions. This work offers a practical strategy for developing robust wearable electronics suited for real-world use.
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DOI
高影响因子
危险品化学品经营许可证（带存储）