APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Weihao Fan,Huaiyuan Wang,Chijia Wang,Zhanjian Liu,Yanji Zhu,Kaka Li
CeO 2 -PANI conductive polymer capsules were prepared by in-situ chemical oxidation polymerization. The capsules were dispersed in F51 epoxy resin and then sprayed onto the steel surface to form novel coatings after curing. The corrosion resistance of coatings was investigated by EIS in a 3.5 wt% NaCl solution. After 30 days, the 60-μm-thin coating containing CeO 2 -PANI capsules exhibited the highest corrosion resistance, and its impedance modulus was higher than 10 9 Ω·cm 2 , which was 10 times that of conventional PANI-Epoxy coatings. This improvement was attributed to the (Fe 3 O 4 + γ-Fe 2 O 3 + CeO 2 ) passive film actively formed by the synergistic effect of PANI and Ce 3+ ions. PANI polarized the anodic reaction and Ce 3+ inhibited the cathodic reaction.
研究领域:
材料科学
·
腐蚀工程
·
聚合物化学
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产品关联
DOI
高影响因子
Catalysts
·
2023
·Vol. 13
·期 11
·1391
·
IF 3.9
Taoming Yu,Doudou Wang,Lili Li,Wenjing Song,Xuan Pang,Ce Liang
The design of highly efficient organic/inorganic photocatalysts with visible-light response has attracted great attention for the removal of organic pollutants. In this work, the polyacrylonitrile (PAN) worked as the matrix polymer, while polyaniline (PANI) and Sb2S3–ZnO were used as organic/inorganic photocatalysts. The heterojunction PAN/PANI–Sb2S3–ZnO photocatalyst was prepared using electrospinning and surface ultrasound. PAN/PANI–Sb2S3–ZnO exhibited an excellent visible-light absorption intensity in the wavelength range of 400–700 nm. The maximum removal efficiencies of PAN/PANI–Sb2S3–ZnO for four organic dyes were all greater than 99%. The mechanism study showed that a dual Z-scheme could be constructed ingeniously because of the well-matched bandgaps between organic and inorganic components in the photocatalyst, which achieved efficient separation of photogenerated carriers and reserved photogenerated electrons (e−) and holes (h+) with strong redox ability. The active species •OH and •O2−played an important role in the photocatalytic process. The composite photocatalyst also had excellent stability and reusability. This work suggested a pathway for designing novel organic/inorganic composite photocatalysts with visible-light response.Keywords:photocatalyst;Sb2S3;PANI;ZnO
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2023
·
IF 6
Liying Wan,Peijie Li,Meiling Yan,Jianhong Wang,Xibao Li
Conductive hydrogels have attracted much attention in soft electronic devices. However, it is still a challenging to be integrated with outstanding mechanical performance, self-healing, shape memory and conductive capability. Herein, we developed a multifunctional conductive hydrogel via interpenetrating network (IPN) and multiple hydrogen bond interaction. Poly (acrylic acid)-polyaniline (PAA-PANI) and polyvinyl alcohol (PVA) form bones of IPN through chemical and physical double cross-linking. Chemically crosslinking of IPN was obtained by in situ polymerization of acrylic acid and aniline. Physical crosslinking is realized by more multiple hydrogen bonds (N–H···O, O–H···O, O–H···N, N–H···N) interaction among PVA, polydopamine and PF127 diamino oxygen derivatives. PANI forms a conductive path in the IPN to ensure its conductivity. IPN hydrogels with multiple hydrogen bonds has excellent mechanical strength, which is much higher than conventional conductive hydrogels. Moreover, the structure endowed the hydrogel low swelling property, good self-healing and thermal-responsive shape memory effect. The multifunctional IPN conductive hydrogel have potential applications in smart devices including self-healing electronic devices, soft robot, and sensors.
研究领域:
材料科学
·
电化学
·
软体机器人
·
传感器
·
智能材料
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产品关联
DOI
高影响因子
CHEMOSPHERE
·
2019
·
IF 5.108
Bin Ou,Jixiao Wang,Ying Wu,Song Zhao,Zhi Wang
The present work investigated the treatment of the polyaniline (PANI) wastewater by anodic oxidation/electro-Fenton and reusing the treated PANI wastewater for the preparation of PANI. Organics were degraded by hydroxyl radical ( OH) and sulfate radical (SO 4 - ) formed simultaneously in the wastewater from electro-Fenton reaction and the anode surface. Under the conditions of 160 mL min −1 oxygen flow rate, constant current density 14 mA cm −2 and Fe 2+ concentration 0.2 mM, 89% COD can be removed from the PANI wastewater after 360 min treatment. The energy consumption was 50 kWh (kg COD) −1 and the current efficiency was 27.8%. After the PANI wastewater treatment , the aniline, aniline derivatives and aniline oligomers were removed from the wastewater. The PANI obtained using fresh solution, treated PANI wastewater and untreated PANI wastewater were recorded PANI-F, PANI-T and PANI-U, respectively. In the preparation of PANI-U, the reaction of p -benzoquinone with aniline or aniline oligomers could change the nucleation and growth, leading to the production of aggregated nanoparticles and low specific capacitance . However, the morphology and specific capacitance of PANI-T were similar to that of PANI-F. The PANI-T is three-dimensional sphere of nanofibers with high specific capacitance about 446.7 F g −1 . The yield of PANI-T using treated PANI wastewater could reach to 92.1%. These results demonstrate that the PANI wastewater treatment approach is efficient and environmentally friendly.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
Energy Reports
·
2023
·
IF 5.2
Mayao Cheng,Linsheng Chen,Jiayi Guo
In view of the problems of nanomaterials in the field of energy storage and pollution removal, energy storage composite nanomaterials were proposed in the study, including Fe3O4 Fe3O4@C (MFC), Fe3O4@PANI, Fe3O4@C @PANI core–shell nanomaterials. The experimental design includes the preparation of electrode in energy storage, characterization of electrode materials, electrode cyclic voltammetry test, electrode charge discharge test, and the preparation of catalyst, catalyst characterization, and factors affecting the removal effect in the soil pollutant removal experiment. The preparation process of catalyst for pollution removal was given, including nano ferric oxide and Pd loaded composite. The energy storage performance analysis shows that the four Fe3O4 nanocomposites all contain Fe3O4, and the corresponding diffraction peaks appear at six positions of 30.2°, 35.5°, 43.1°, 53.8°, 57.3° and 62.9° respectively. The electrochemical test results show that Fe3O4 Fe3O4@C (MFC), Fe3O4@PANI, Fe3O4@C @PANI has high electrochemical performance basis and high capacitance. The removal effect analysis shows that the optimal value of the reaction rate constant is 2.1635, the optimal current value is 40 mA, and the optimal pH value is 3.0. The experimental results verify that the composite nano materials with FeCl3.6H2O as the iron source can be used as better capacitor materials and have excellent application prospects. At the same time, the pollution removal results show that Pd-Fe3O4 has incomparable advantages compared with other materials, and has high reliability and effectiveness.
研究领域:
材料科学
·
环境科学
·
电化学
✓ 已验证
DOI
高影响因子
TALANTA
·
2022
·
IF 6.556
Yu-Zhu Ding,Yi-Da Zhang,Yan-Ping Shi
Rice is an important crop that provides energy and nutrients to humans, which undergoes the aging process, the quality decline is related to the exogenous storage conditions and the change of own enzyme activity . However, due to the complex composition of rice and serious matrix interference, the ageing identification of rice is still challenging. Hence, a novel spinel particles ZnFe 2 O 4 @PANI was designed and synthesized for adsorption and determination of vitamin B 9 , which can be used to distinguish rice in different years and analyze the degree of aging. The ZnFe 2 O 4 @PANI showed large specific surface area and fast mass transfer rate with good linear correlation coefficient (R 2 = 0.9965), satisfactory recoveries (85.1%–99.9%) and relative standard deviations (RSD, 9.3%). Moreover, the π-π electron-donor-acceptor (EDA) and intermolecular hydrogen-bonding interactions of polyaniline coating provided selective adsorption on vitamin B 9 . Adsorption thermodynamics study suggested that the adsorption reactions were spontaneous, endothermic and thermodynamically favorable. Finally, ZnFe 2 O 4 @PANI was used to evaluate vitamin B 9 in rice from different years, which laid a theoretical foundation for exploring the relationship between vitamin changes and the aging degree of the rice.
研究领域:
食品科学
·
分析化学
·
营养学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2021
·
IF 5.097
Bin Zuo,Qinyue Deng,Han Shao,Bingbing Cao,Yunhui Fan,Wanfang Li,Mingxian Huang
In this work, we designed the Fe3O4@mesoporous-SiO2@chitosan@polyaniline core–shell nanoparticles (Fe3O4@mSiO2@CS@PANI, hence abbr. FSCP), which can be used to capture Cr(VI) in wastewater. Rapid adsorption behavior and high removal capability (249.6 mg Cr(VI) per gram of FSCP) were exhibited by this material. X-ray photoelectron spectroscopy (XPS) analysis demonstrates that Cr(VI) was adsorbed and in situ reduced on FSCP at pH 2. Adsorption was facilitated by the electrostatic attraction of HCrO4– and −N+═C–/–N+H–, while the active −NH–/–N+H– sparked the reduction of Cr(VI) to Cr(III). Moreover, the coordination of the resulting Cr(III) with the amino group promoted adsorption, thus achieving detoxification of Cr(VI) in wastewater. After eight recycling experiments, the Cr(VI) removal efficiency of this material is still more than 90%, indicating that this material has excellent stability and good application potential. Therefore, this magnetic adsorbent offers a potential solution for the successful handling of chromium-containing wastewater.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2013
·Vol. 28
·期 6
·832-839
·
IF 1.713
Ruxangul Jamal,Weiwei Shao,Feng Xu,Tursun Abdiryim
Polyaniline/nano titanium dioxide/graphene nanoplatelet (PANI/TiO2/G) composite was synthesized by mechanochemical route. The structure and morphology of the composite were characterized by Fourier transform infrared spectra, ultraviolet-visible absorption spectra, x-ray diffraction and transmission electron microscopy. The electrochemical performances of the composite were investigated by galvanostatic charge-discharge, cyclic voltammetry, cycling stability and electrochemical impedance spectroscopy. The structure and properties of PANI/TiO2/G composite were compared with that of polyaniline/ graphene nanoplatelet (PANI/G) composite prepared under the same polymerization conditions. After comparative analysis with PANI/G, the effects of the nano titanium dioxide (TiO2) on the structural and physicochemical properties of the PANI/G have been discussed in depth. The comparison suggested that the PANI/TiO2/G composite has higher oxidation degree and lower crystallinity than PANI/G due to the addition of nano-TiO2. Morphology studies showed that PANI and nano-TiO2 particles were both observed on the bent and flat surfaces of graphene nanoplatelet in the PANI/TiO2/G composite. The electrochemical tests showed that the PANI/TiO2/G composite displayed a higher electrochemical activity with specific capacitance of 516 F/g (3 mA/cm2) and better cycle stability than PANI/G.
研究领域:
材料科学
·
纳米科技
·
电化学
·
功能材料
·
高分子复合材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yong Liu,Junyu Yuan,Yuqi Wang,Rongzong Zheng,Qibin Liu,Xiaojuan Shang,Jiaojing Shao,Zhongquan Wan,Junsheng Luo,Chunyang Jia
Electrochromic materials (ECMs) are capable of reversibly adjusting their transmittance or reflectance properties in response to changes in the external biasing voltages. In this study, we enhanced the electrochromic and electrochemical properties of polyaniline (PANi) effectively through the incorporation of MXene Ti2CTx using an in situ composite strategy. This improvement in the electrochromic and electrochemical properties observed can be attributed to the intermolecular forces between the aniline group of PANi and the terminal groups of MXene Ti2CTx sheets. The presence of hydrogen bonds between the PANi monomers and the MXene sheets was confirmed through theoretical calculations and photoluminescence results, which effectively improved the composite interfaces. Additionally, the PANi@MXene composite films were successfully prepared through a simple one-step in situ polymerization process, as verified by SEM and XPS characterization. The electrochemical studies revealed enhanced electronic conductivity, a high ion diffusion coefficient, and a narrow energy redox gap, all contributing to the excellent electrochemical properties observed. Overall, our results demonstrate that the MXene Ti2CTx composition effectively enhances the electrochromic performance of PANi. The PANi@MXene composite films exhibited a high optical modulation range, rapid switching response time, good thermal radiation regulation, and excellent operational stability. This composite strategy significantly improves the performance and practical applicability of ECMs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2022
·Vol. 307
·期 11
·2200366
·
IF 4.402
Hailan Zhao,Weiying Zhang,Pengju Sun,Xiaoguang Ying,Jianying Huang,Xiao Li
As the core component of wearable electronic devices, flexible energy storage materials play an irreplaceable role. At present, it is still a challenge to prepare flexible electrode materials with high energy density. In this paper, a polyaniline-based composite flexible conductive hydrogel (PPG-P) with a two-level conductive network is successfully prepared by a secondary induced assembly in situ polymerization method. The special conductive structure greatly promotes the efficiency of charge transfer and the utilization of electroactive substances, so that PPG-P exhibits excellent electrochemical performance. In a three-electrode system, PPG-P has a mass-specific capacitance as high as 989 F g −1 (0.5 A g −1 ). After 1000 charge and discharge cycles, the capacitance retention is 87%. Symmetrical flexible supercapacitors based on PPG-P have high specific capacitance (176 F g −1 /0.5 A g −1 ) and high energy density (15.6 Wh kg −1 ). After 1000 cycles of constant current charge and discharge, the capacitance maintains 78.1%. The preparation of PPG-P with a hierarchical structure demonstrates the possibility of achieving high energy density in flexible electrode materials, which has great application potential in the development of energy storage elements in wearable devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
Scientific Reports
·
2025
·Vol. 15
·期 1
·44131
·
IF 3.9
Eissa A. A.,Kamar E. M.,Mousa M. A.,Sameeh M.
This study centers on polyvinyl alcohol and polyaniline films infused with lithium iodide as polymer electrolyte membranes that conduct ions for various electrochemical applications. Electrolyte membranes made from a 90:10 weight percent blend of polyvinyl alcohol (PVA) and polyaniline (PANI) were synthesized with varying amounts of LiI (from 5 to 25% by weight) via solution casting. The samples were analyzed through X-ray diffraction (XRD), Fourier transform infrared (FT-IR), mechanical properties testing, AC impedance spectroscopy, and linear sweep voltammetry (LSV). X-ray diffraction results show that the amorphous nature of PVA enhances with more additives, and LiI incorporation leads to improved mechanical properties in composite samples. FTIR analysis highlighted interactions between PVA and electrolyte components. Notably, the composites’ elongation at break surpassed that of the undoped PVA film, reaching 108 ± 7.1% with increased LiI content. The membrane containing 20 wt% LiI salt showed the highest ionic conductivity of 4.45 × 10 –3 S cm −1 . This top-performing membrane displayed an ionic transference number of 0.991 and demonstrated electrochemical stability at 2.21 V. All composite membranes displayed peaks in the dielectric loss spectra. The dielectric properties of the composites indicate a significant connection between the fluctuations in conductivity and the changes in the mobility and concentration of charge carriers. The composite materials exhibited non-Debye characteristics regarding their dielectric properties.
研究领域:
材料科学
·
高分子化学
·
电化学
·
储能
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产品关联
DOI
PubMed
高影响因子
ChemistrySelect
·
2022
·Vol. 7
·期 45
·e202203391
·
IF 2.307
Qun Xiang,Ruiwen Yan,Guiqi Gao,Shuang Wang
Graphical The PANI-CeO 2 @Pt composites with core-shell structure have been successfully synthesized. Platinum nanoparticles were anchored on the surface of the PANI-CeO 2 materials. The lower potential and higher current density for MOR among the tested PANI@Pt, Pt/C, and CeO 2 @Pt catalysts showed that PANI-CeO 2 @Pt catalyst displayed excellent catalytic performance. This work provided a novel approach to prepare anode catalytic materials and had wide application. Polyaniline (PANI) and Pt were synthesized in sequence by in situ electrochemical deposition on CeO 2 surface to prepare PANI/CeO 2 /Pt ternary composites (PANI-CeO 2 @Pt composites). The electrocatalytic activity of PANI-CeO 2 @Pt composite was measured to 226 mA⋅mg −1 , which was 1.7-, 2.3-, 20-flod as that of CeO 2 @Pt, Pt/C, and PANI@Pt catalyst, respectively. The PANI-CeO 2 @Pt catalyst displayed noticeably the highest activity toward methanol oxidation after the 4000 s among the tested CeO 2 @Pt, Pt/C, and PANI@Pt catalyst. In a CO-stripping experiment, PANI-CeO 2 @Pt composites exhibited better CO tolerance. These results meant that highly dispersed Pt nanoparticles and the oxygen storage capacity of PANI-CeO 2 @Pt contributed to admirable catalytic activities for methanol oxidation reaction (MOR).
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）