Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 8
·4058-4066
·
IF 8.867
Jian Zhang,Jie Han,Minggui Wang,Rong Guo
Multifunctional magnetic adsorbents containing MnO2 and polyaniline (PANI) with optimized adsorption properties toward heavy metal ions have been developed. In particular, Fe3O4 spheres were chosen as the magnetic core, followed by PANI and MnO2 coating, realizing the formation of Fe3O4/PANI/MnO2 core–shell hybrids. The as-synthesized Fe3O4/PANI/MnO2 core–shell hybrids showed a hierarchical structure with a large surface area and high magnetic saturation value. In comparison with Fe3O4/PANI and Fe3O4/MnO2 core–shell hybrids, Fe3O4/PANI/MnO2 core–shell hybrids displayed the highest adsorption capacity toward heavy metal ions (including Cd(II), Zn(II), Pb(II) and Cu(II)), thanks to the integrated physical and chemical adsorption behaviors resulting from MnO2 inorganic oxide and the PANI polymer. The developed multifunctional Fe3O4/PANI/MnO2 adsorbents synthesized by a facile and economic route are believed to show high potential in environmental remediation for heavy metal removal.
研究领域:
环境科学
·
材料化学
·
纳米技术
·
水处理
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Cong Liu,Shifang Ye,Wenyan Yang,Shixiang Zhou,Jiading Zhu,Jiantao Cai,Zhe Xin,Peizhong Feng,Litong Guo,Shiwang Ye,Zhen Wu,Jun Ding,Xueyu Tao
Conductive polymer hydrogels for flexible supercapacitors usually contain nonconductive matrices (e.g., PVA, PAM), which hinder the electrochemical performance. This work presents a matrix-free strategy via supramolecular self-assembly, utilizing HEDP as a dual-functional dopant/cross-linker and lignosulfonate (LS) as a redox-active template. The incorporation of LS optimizes the nanostructure for faster ion transport while simultaneously contributing additional pseudocapacitance via quinone/hydroquinone redox couples. This supramolecularly assembled PANI/HEDP/LS (PHL) hydrogel demonstrates significant electrochemical advantages. At 0.5 A g–1, the PHL9 hydrogel electrode delivered a specific capacitance of 625 F g–1, exceeding that of the original PHL0 hydrogel without redox additives (419 F g–1). The PHL9 hydrogel electrode also exhibited an electrical conductivity of 86.51 S m–1, while maintaining stable cycling performance after 10,000 charge/discharge cycles (76.51% retention) and good flexibility, as 92.64% of the capacitance was still preserved after 200 bending cycles. All-hydrogel-state flexible supercapacitors (FSCs) constructed with PHL9 composite hydrogel electrodes delivered an energy density of 22.5 Wh kg–1 at a power density of 125 W kg–1, surpassing that of PHL0-based FSCs (16.2 Wh kg–1). Moreover, the device further maintained 80.75% of its initial capacitance after 10,000 charge/discharge cycles, indicating reliable long-term stability. Overall, these results indicate that the proposed strategy provides an effective route for developing high-performance composite hydrogel electrodes in wearable and flexible energy storage applications.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2024
·Vol. 31
·期 3
·1-13
·
IF 2.6
Li Shuo,Tao Yulun,Wu Yuannan,zhu Shanshan,Khademi Sara,lv Yinru,Tai Yanlong,Wang Chaoran
The high integration and multifunctionality in flexible electronic device play an important role in its development. In this study, we developed multifunctional hydrogels integrated with supercapacitive, photoelectric, and strain-sensing capabilities. The hydrogel composite consists of PAM/PVA matrix with polyaniline (PANI) and reduced graphene oxide (rGO) as conductive components. Two different acid dopants, citric acid (CA) and hydrochloric acid (HCl), were employed to investigate their impact on photoelectrochemical capabilities of hydrogels. Both CA-doped and HCl-doped hydrogels exhibited remarkable supercapacitive performance, achieving areal capacitances of 492 mF/cm 2 and 538 mF/cm 2 , respectively. Furthermore, both hydrogels demonstrated photosensitivity towards shorter wavelengths such as ultraviolet (380 nm) and blue (475 nm) light. Lastly, the proposed hydrogels serving as highly sensitive strain sensors was verified through effectively sensing arm bending movements.
研究领域:
材料科学
·
电化学
·
光电子学
·
传感器
·
纳米技术
✓ 已验证
DOI
高影响因子
ELECTROANALYSIS
·
2021
·Vol. 33
·期 12
·2406-2416
·
IF 3.223
Yao Wang,Yang Zhang,Yuedan Wang,Rufeng Zhu,Yuanli Chen,Xue Liu,Jia Xu,Mufang Li,Dong Wang
A cotton yarn biosensor based on electrochemical transistor functionalized with MWCNT and PANI was developed for the detection of urea. The transistors based on PANI/MWCNT/cotton yarns under optimized MWCNT concentration has been obtained, which exhibited high on/off current ratio, fast response time, and good operational stability. A transistor-based urea sensor was prepared from PANI/MWCNT/cotton yarns, which could monitor urea in the 1 nM–1 mM linear range with the correlation coefficient of 0.9716. Furthermore, the sensor showed superior reproducibility and high specificity. The practical applications of the proposed sensor were also confirmed. These results indicate the flexible transistor can be used as an efficient platform for biological detection in body fluids.
研究领域:
生物医学工程
·
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Yingxi Lin,Haiyan Zhang,Haiyang Liao,Yue Zhao,Kuan Li
The ability of self-healing for wearable electronic devices are critical, for their vulnerability and irreversible damages while practical applications. Herein, we report a ferric enhancing dual physical cross-linking polyelectrolyte for supercapacitors . The gel electrolyte is copolymerized by using acrylic acid as a hydrophilic monomer and stearyl methacrylate as a hydrophobic monomer in an aqueous ferric nitrate solution with cationic surfactant cetyltrimethylammonium bromide and subsequently immersed in the sulfuric acid solution. With the help of hydrogen bonding and ionic bonding, the prepared hydrogel containing 1 mol L −1 H 2 SO 4 exhibits good mechanical performance (extensibility >2400%, and stress >230 kPa), excellent ionic conductive (>30 mS cm −1 ), and good self-healing efficiency. Base on this polyelectrolyte, we successfully assemble the self-healing supercapacitor by two identical electrodeposited nano-wire PANI electrodes. The self-healing device achieves an excellent energy density of 19.33 Wh kg −1 at power densities of 0.67 kW kg −1 , self-healable ability (∼86% capacitance retention after healing behavior), aging durability, and cycling stability. Our results provide a valid and straightforward strategy to design self-healing energy storage devices.
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
Nanoscale
·
2018
·Vol. 10
·期 46
·22055-22064
·
IF 7.233
Ting Wang,Dan Wu,Youliang Wang,Tingbo Huang,Gary Histand,Tingting Wang,Heping Zeng
Polyaniline(PANI)-decorated Cu nanoparticles were prepared by a facile solvothermal method. Different reaction temperatures resulted in different morphologies of the Cu/PANI composites, which exhibited good photocatalytic activities. When the mass ratio of PANI increased to 2.5 wt%, the H2 evolution rate reached 1.97 mmol g−1 h−1 in lactic acid solution under solar light irradiation, which is about 2 times higher than that of pure Cu nanoparticles (1.06 mmol g−1 h−1). The introduction of PANI can improve the separation efficiency of the photo-generated electron–hole pairs, where PANI acts as a hole reservoir for trapping holes generated by the Cu NPs and hindering the recombination of the electron–hole pairs. A possible mechanism is presented to explain the photocatalytic process using Cu@PANI core–shell nanospheres as the photocatalyst.
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
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Xuelin Wang,Chenjian Li,Haoran Geng,Jian Xie,Zhimin Chen,Xiaolin Zhang,Chuanxi Xiong,Shan Wang
Molybdenum disulfide (MoS 2 ) has been considered as an excellent candidate for microwave absorption applications due to its appropriate electrical conductivity and large area size. In this study, the MoS 2 /Fe 3 O 4 /PANI nanocomposite (MFP), a MoS 2 based ternary composite absorbing material with multiple heterostructures is prepared through composite with ferroferric oxide (Fe 3 O 4 ) and polyaniline (PANI) and exhibits excellent microwave absorbing performance. Owning satisfactory impedance matching and multiple interfacial polarization, the minimum reflection loss of MFP can reach −50.3 dB at a thickness of 2.6 mm, and the effective absorption bandwidth is 5.1 GHz. Meanwhile, the whole X and Ku-band absorption can also be achieved with specific MoS 2 loading at an optimized thickness. The ternary composite enhances the ability of electromagnetic waves attenuation by reducing dielectric constant and improving impedance matching, which is a novel medium adjusting strategy to provide a new insight for MoS 2 in the field of microwave absorption and national defense security stealth technology.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 33
·期 29
·295401
·
IF 3.953
Qiangqiang Wang,Yongsheng Fang,Maosheng Cao
Micro-supercapacitors (MSCs) are considered as the promising energy supply of miniaturized electronic devices. The electrode material, as one integral part, play a crucial role on the energy storage performance of MSCs. In our work, we constructed a heterojunction in MXene-PANI@MWCNTs (MPM) ternary composite, benefitting for the synergistic enhancement effect among MXene, polyaniline (PANI) and multiwall carbon nanotubes, an outstanding specific capacitance of 414 F g−1 (at 1 A g−1) has been achieved. MPM shows high capacitance retention at large current density (86.7%, at 10 A g−1) and long-term cycling stability of 90.4% for 10 000 cycles. Furthermore, we obtained MPM self-standing films, and constructed a flexible all-solid-state MSC based on the film electrode. A competitive charge storage capability of 30.2 mF cm−2 and long-term stability of 70.2% retention for 10 000 cycles was obtained in the MSC. Meanwhile, the MSC shows excellent flexibility, maintaining most capacitance under bending conditions. Moreover, using an integrated strategy, MSCs can obtain tunable voltages and currents that meet various practical requirements. All these results indicate that the MPM is an excellent charge storage material and will become a potential candidate for flexible energy-storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Dong Shi,Mingzhi Yang,Baoguo Zhang,Haixiao Hu,Zizheng Ai,Yongliang Shao,Jianxing Shen,Yongzhong Wu,Xiaopeng Hao
Boron carbonitrides (BCN) have been widely concerned in the field of energy storage and conversion. However, the energy storage mechanism of electrical double-layer behavior and their stacked-layer structure severely limit the improvement of capacitance, thereby hindering their further development in energy storage. Therefore, an ultrasonic-ball milling method was first chosen to obtain BCN nanosheets, together with a feasible way of polyaniline (PANI) modification performed to boost the capacitive reaction of BCN nanosheets. For the first time, a BCN-PANI-based symmetric supercapacitor device can reach a high voltage window of 3.0 V when 1 M Et 4 N·BF 4 was chosen as the electrolyte. The working voltage of 3.0 V is three times that of a device with pure PANI with the ultrahigh energy density of 67.1 W h kg −1 , superior to most of the reported PANI-based devices. The eminent electrochemical performance provides a promising strategy to pave the way for configuring carbon-based multiple composite electrodes for other energy storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Hui Zhi,Xiaobo Zhang,Fengya Wang,Peng Wan,Liang Feng
Flexible pressure sensors made of carbon materials have been used in electronic skins (e-skins), whose performance can be enhanced if composite sensing materials are used. Herein, an MXene/polyaniline/bacterial cellulose (MXene/PANI/BC) aerogel sensor has been fabricated through the self-assembly process between the MXene and one-dimensional active material. Combined with fewer-layer or single-layer MXenes, the as-fabricated aerogel could be used as the active layer of the pressure sensor, monitoring tiny motion signals of finger bending, wrist bending, and pulse beating. Bluetooth wireless transmission could also be realized to monitor the real-time spatial pressure distributions on the mobile phone, making the aerogel-based sensor an ideal candidate in e-skins. Meanwhile, the aerogel-based sensor is sensitive toward NH3 due to the unique three-dimensional (3D) structure of the aerogel and the abundant terminal groups (such as −O, −OH, and −F) of the MXene in the system that ensure efficient electronic transfer for the sensing process and create active sites for the absorption with the target gas. This work offers a versatile platform to develop MXenes to fabricate 3D composite aerogels for high-performance flexible multiple sensors.
研究领域:
材料科学
·
传感器技术
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymers
·
2023
·Vol. 15
·期 22
·4399
·
IF 5
Xuanzhen Zhang,Yunhui Feng,Fangbao Fu,Huan Wang
High-performance ultraviolet photodetectors have important scientific research significance and practical application value, which has been the focus of researchers. In this work, we have constructed a highly photosensitive UV photodetector with a unique “sandwich” structure, which was mainly composed of two layers of ZnO nanosheet arrays and one layer of polyaniline (PANI). The results showed that the UV current of ZnO/PANI devices was 100 times higher than that of pure ZnO devices under the same UV irradiation time. At a 365 nm wavelength, the device had excellent photocurrent responsiveness and photoconductivity. This high performance was attributed to the large specific surface area of ZnO nanosheets and the p-n junction formed between P-type PANI nano-porous film and N-type ZnO nanosheets. This provides a solid theoretical basis for the application of ZnO nanosheets in ultraviolet detection, and possesses significance for the development of ultraviolet photodetectors.Keywords:ZnO nanosheets;PANI nano-porous film;ultraviolet photodetector
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SYNTHETIC METALS
·
2023
·
IF 4.4
Ruiqi Li,Fuqiang Zhai,Yuan Liu,Qiang Wang,Hao Wei,Wencong Wu,Chunhong Zhang,Wenhang Chen
Considering the diverse structures and superior properties of metal-organic frameworks (MOFs), we successfully synthesized Co/NC@PANI composites through high-temperature pyrolysis and in-situ chemical oxidation using zeolitic imidazolate framework compounds (ZIFs) as precursors. The inclusion of polyaniline in the composites improved conductive loss and interfacial polarization, while the porous structure of Co/NC and uniformly dispersed cobalt nanoparticles can contribute to electromagnetic wave multiple reflection and magnetic loss. By synergistically dissipating electromagnetic waves through various loss mechanisms, we were able to control electromagnetic parameters and optimize performance, resulting in the development of Co/NC@PANI composites with exceptional electromagnetic properties. The minimum reflection loss (RL min ) reaches − 46.28 dB at 5.76 GHz, with a matching thickness of 5 mm. And the effective absorption bandwidth (EAB, RL<− 10 dB) reaches 3.52 GHz at a thickness of 2.5 mm. This work provides an efficient enlightenment for constructing microwave-absorbing material with high performance.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）