BIOELECTROCHEMISTRY
·
2025
·
IF 4.5
Chunfang Wang,Yining Wang,Faqiong Zhao,Baizhao Zeng
Organic-inorganic composite photoactive materials can combine the merits of organic and inorganic components and show better performance in comparison with single-component materials. In this work, a novel photoactive material was synthesized through chemical polymerization of 3,4-ethylenedioxythiophene (EDOT) on the surface of hydrothermally prepared Bi 2 WO 6 , followed by modification of self-polymerized dopamine (PDA). The integration of poly(3,4-ethylenedioxythiophene) (PEDOT) and Bi 2 WO 6 effectively facilitated the separation of photogenerated electron-hole pairs, thus demonstrated substantially strong photoelectrochemical signal compared to pure Bi 2 WO 6 . The PDA film, with abundant functional groups, could further sensitize the material and facilitate the immobilization of recognition units. As a proof of application, the composite was combined with carcinoembryonic antibody to construct an immunosensor for carcinoembryonic antigen sensing. Resultantly, although the components and construction procedure were simple, the prepared sensor demonstrated a broad linear detection range of 0.001–20 ng/mL and a relative low detection limit of 0.50 pg/mL. It also showed high selectivity and stability. Its practical feasibility was confirmed by detecting real samples and yielding satisfactory results.
研究领域:
生物医学工程
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Physics
·
2020
·
IF 10.443
Y. Lu,Y. Qiu,K. Cai,X. Li,M. Gao,C. Jiang,J. He
The thermoelectric (TE) properties of organic/inorganic composite materials have been extensively studied for nearly one decade but there still has no significant breakthrough. Herein, we developed a facile method to prepare poly(3,4-ethylenedioxythiophene) (PEDOT)/Ag 2 Se/CuAgSe ternary composite films with ultrahigh performance and superior flexibility. First, PEDOT:poly(styrenesulfonate) (PSS)–coated Se (PC-Se) nanowires (NWs) were chemically in situ synthesized, then the PC-Se NWs were used as templates to prepare PEDOT:PSS coated Ag 2 Se/CuAgSe NWs, and finally highly flexible PEDOT/Ag 2 Se/CuAgSe ternary composite films on porous nylon membrane were fabricated by vacuum assisted filtration and then hot pressing. An optimized composite film with hierarchical microstructure defects shows a record power factor (PF) of ~1603 μW m −1 K −2 (corresponding 0.6 < ZT < 1.05) at 300 K, which is the record value for TE organic/inorganic composite materials. After bending for 1000 cycles around a 4-mm radius rod , about 92% of the initial PF is maintained, exhibiting an excellent flexibility, which is attributed to the synergetic effect of the flexible nylon membrane, the porous PEDOT/Ag 2 Se/CuAgSe film, and specifically the PEDOT as a binder. Moreover, a flexible TE module composed of 11 single-leg of the film generates a voltage of 45.8 mV and a maximum power of 3.2 μW (power density of 8.4 W m −2 ) at a temperature gradient of 36 K, verifying excellent TE properties of the film. This work provides a great idea for design and fabrication of high-performance flexible TE films, which can be extended to other chalcogenides/PEDOT composites and will certainly promote the development and application of TE organic/inorganic composite films.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Minzhi Du,Xinyi Chen,Kun Zhang
Ionic liquids (ILs) have been reported to modulate the thermoelectric properties of conducting polymers. However, there is still a lack of comprehensive understanding of the effects of ILs on their thermoelectric transport. Herein, we selected 1-ethyl-3-methylimidazolium dicyanamide (EMIM:DCA) to post-treat free-standing PEDOT nanowire (NW) films and the effects on thermoelectric performance were fully explored. EMIM:DCA post-treatment simultaneously increases the Seebeck coefficient (87% increment) and electrical conductivity (24% increment) of PEDOT NWs, resulting in an optimal power factor of 83.8 μW m–1 K–2 at room temperature. It demonstrates the first ever-reported free-standing IL/polymer composites and outperforms the majority of all IL/polymer composites. Based on experimental characterizations, we elucidate that IL-induced dedoping and the Soret effect synchronously determine the Seebeck coefficient enhancement, where the Soret effect plays a dominant role, accounting for 79.9% for PEDOT NW films with 80 wt % EMIM:DCA. By means of X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), and X-ray diffraction (XRD), we further confirm that IL-induced dedoping contributes to phase segregation and compact stacking of PEDOT chains, resulting in lowered carrier concentration for the enhanced Seebeck coefficient and facilitating carrier transport for higher electrical conductivity. More importantly, through Kang–Snyder transport modeling, we first find that the improved transport coefficient (σE0) by IL-induced dedoping also contributes to the Seebeck coefficient enhancement, shedding light on the mechanism that can be adopted to design high-performance thermoelectric materials with conducting polymers.
研究领域:
材料科学
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物理化学
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2024
·Vol. 13
·期 18
·2996
·
IF 4.7
Jing Wu,Huilin Li,Zhijuan Wang,Mingfei Pan,Shuo Wang
Tert-butylhydroquinone (TBHQ) is a phenolic substance that is commonly employed to prevent food oxidation. Excessive or improper utilization of this antioxidant can not only impact food quality but may also pose potential risks to human health. In this study, an ultrasensitive, stable, and easily operable ratiometric electrochemical sensor was successfully fabricated by combining the tubular (3,4-ethylenedioxythiophene) (T-PEDOT) with single-wall carbon nanohorns (SWCNHs) for the detection of TBHQ antioxidants in food. The SWCNHs/T-PEDOT nanocomposite fabricated through ultrasound-assisted and template approaches was employed as the modified substrate for the electrode interface. The synergistic effect of SWCNHs and T-PEDOT, which possess excellent electrical conductivity and catalytic properties, enabled the modified electrode to showcase remarkable electrocatalytic performance towards TBHQ, with the redox signal of methylene blue serving as an internal reference. Under optimized conditions, the SWCNHs/T-PEDOT-modified electrode demonstrated good linearity within the TBHQ concentration range of 0.01–200.0 μg mL−1, featuring a low limit of detection (LOD) of 0.005 μg mL−1. The proposed ratiometric electrochemical sensor displayed favorable reproducibility, stability, and anti-interference capacity, thereby offering a promising strategy for monitoring the levels of TBHQ in oil-rich food products.
研究领域:
食品科学
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材料科学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
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IF 4.939
Bo Yang,Kexin Huang,Shenglan Hu,Ruixiang Wang,Youjun Fan,Jiuhui Qi,Chuyan Rong,Jianqiang Zeng,Wei Chen
Direct methanol fuel cell (DMFC) with near-zero pollution emission, large energy density , and low operating temperature provides a beneficial and sustainable way for alleviating fossil energy crisis and ecological pollution issues. In this work, a systematic protocol was explored for the design of novel electrocatalyst based on PEDOT-PSS coated amino-functionalized SiO 2 microspheres (SiO 2 –NH 2 @PEDOT-PSS) support, and then Pt nano-particles (NPs) were uniformly anchored for the anodic process of DMFCs. Characterization techniques, e.g. X-ray diffraction (XRD) and transmission electron microscopy (TEM) confirmed that the dispersity and homogeneity of Pt NPs on the surface of SiO 2 –NH 2 @PEDOT-PSS were markedly improved due to PEDOT-PSS modification, and the distribution of Pt NPs was in a smaller mean-size ~2.8 nm. Subsequently, X-ray photoelectron spectroscopy (XPS) study exposed fast electron shift phenomenon from SiO 2 –NH 2 @PEDOT-PSS support to Pt NPs in the catalyst. The various electrochemical tests such as cyclic voltammetry (CV), chronoamperometry (CA) and impedance spectroscopy (EIS) revealed that the prepared Pt/SiO 2 –NH 2 @PEDOT-PSS catalyst presented higher electrocatalytic efficacy, excellent durability with improved CO-tolerance towards methanol oxidation reaction rather than commercial Pt/C catalyst. These distinctive physical and chemical features of designed catalyst raise the spirit to design an efficient electrocatalyst based on Pt/SiO 2 –NH 2 @PEDOT-PSS in DMFC applications.
研究领域:
材料科学
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电化学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 56
·33965-33971
·
IF 3.119
Haihui Liu,Pengfei Liu,Mengqi Zhang,Zihan Tian,Ning Wang,Yanxin Liu,Xingxiang Zhang
Light-weight, mechanically flexible, transparent thermoelectric devices are promising as portable, and easy-to-integrate energy sources. Poly(3,4-ethylenedioxythiophene) nanowires (PEDOT NWs) possessing high electrical conductivity were synthesized by a facile self-assembled micellar soft-template method. And then, Te nanowires (Te NWs) with high Seebeck coefficient were easily synthesized by the solution process and then added as an inorganic filler to form the PEDOT NW/Te NW nanocomposite films via a simple and convenient vacuum filtration method. The thermoelectric (TE) properties of the nanocomposites were characterized in this research. A maximum power factor of 58.03 μW m−1 K−2 is obtained from the film containing 90 wt% Te NWs at room temperature, which is dozens of times that of the pure PEDOT NW film. This work uses the as-prepared PEDOT NWs/Te NW (90 wt%) nanocomposite film to fabricate a flexible thermoelectric generator and an output voltage of 2.8 mV was generated at a temperature difference of 13.5 K between the environment and human body.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2023
·Vol. 170
·期 2
·027510
·
IF 3.9
Rongxiang Shi,Junhao Chen,Xiaofang Wan,Junfei Tian
To address the problems of high cost and cumbersome preparation process in the current construction of cholesterol biosensors, a third-generation electrochemical cholesterol biosensor with a facile preparation method, low cost, enhanced sensitivity, and wide linear range was investigated in this paper. The cholesterol biosensor was constructed by immobilizing cholesterol oxidase (ChOx) on a poly-3,4-ethylenedioxythiophene (PEDOT) modified screen-printed electrode (SPE). This study showed a very simple fabrication process. The electrodes were constructed only in three steps, including in situ electropolymerization of PEDOT, enzyme introduction and encapsulation of the nafion membrane. The successful modification of PEDOT was demonstrated by Energy Dispersive X-ray spectroscopy (EDX) and Fourier-Transform Infrared spectroscopy (FT-IR). The morphological characterization and electrochemical analysis showed that the presence of PEDOT not only provided more anchoring sites for immobilizing enzymes, but also its high electrocatalytic activity enabled direct electron transfer (DET) between the ChOx and the electrode surface. The linear range for the actual detection of cholesterol was 50–800 μM, the sensitivity was 1.34 μA mM−1, and the electrical signal was not affected by interfering substances such as uric acid, glucose, dopamine, and ascorbic acid. Therefore, the cholesterol biosensor constructed in this paper was expected to achieve large-scale applications.
研究领域:
生物化学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Yingze Lei,Keying Feng,Ao Zeng,Hongran Yang,Long Zhang,Zhiyong Liu,Zheng Chen
In this work, a method was developed to modulate the nanostructure of PEDOT films by constructing a ZnO interfacial modification layer on a substrate. Scanning electron microscopy (SEM) results revealed that the PEDOT film electrodeposited on the ZnO interfacial modification substrate had larger pores and a more three-dimensional structure. The PEDOT film showed a good electrochromic effect, and the transmittance changed from 51.04 % initially to 43.2 % after 8000 s cycles in the three-electrode system, which maintains an initial transmittance of 84.05 %, reflecting a great improvement in stability compared with that of pure PEDOT, which maintains 42.45 % of the original transmittance. In addition, after cycling for 8000 s, the response time of the film decays very little (1.8 s for coloring and 1.9 s for bleaching to 2 s for coloring and 2.1 s for bleaching), which is a great improvement over that of pure PEDOT (1.6 s for coloring and 1.8 s for bleaching to 15 s for coloring and 16.1 s for bleaching). This method is simple and inexpensive and provides a new option for modulating the morphology and structure of conductive polymers, which is conducive to the development of the commercialization direction.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Kun Song,Rui Yang,Xiaoshuang Chen,Xin Wang,Guoli Chen,Nan Zhao
Developing electrodes with high stability and high specific capacity are two strategies to promote the application of supercapacitors. However, high specific capacity electrodes possess poor cycling stability, and good cycling performance electrode possesses low specific capacity, so it is difficult to achieve a balance. The stability of nano-sized metal oxides is reduced due to the collapse of their nanostructures during the cyclic process. Thus, the channel of electron transmission is destroyed, and the conduction of charge is not smooth. Therefore, we select electrodes with highest specific capacity and better cycling performance from many structures of CoFe 2 O 4 electrodes that are controllable designed by solvent ratio and structure-directing agent, such as chain, sphere, box, belt etc. In addition, we use an electrochemical method to coat the electrode with a layer of PEDOT to increase the conductivity and cyclic stability for practical application. Hence, the NF/CoFe 2 O 4 sphere/PEDOT as cathode indicates an outstanding specific capacity of 299.2 mAh g −1 at 1 A g −1 . The energy density is 230.4 Wh kg −1 (power density of 616 W kg −1 ). The aqueous hybrid supercapacitor shows a good cycle life, after 2000 cycles the capacity retention is 91.7%. The maximum current and self-discharge phenomena of mechanical energy charging are also studied and it is demonstrated that it has good tolerance to large current, which is suitable for mechanical energy charging.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Shiben Liu,Xiaohui Jiang,Geoffrey I.N. Waterhouse,Zhi-Ming Zhang,Liang-min Yu
A cuprous oxide decorated poly(3,4-ethylenedioxythiophene) multi-layer graphene modified glassy carbon electrode (Cu 2 O/PEDOT/rGO/GCE) was fabricated via a stepwise electrodeposition process, then used as a non-enzymatic sensor for glucose detection. The structure and morphology of Cu 2 O/PEDOT/rGO film were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Electrochemical tests showed that the Cu 2 O/PEDOT/rGO/GCE offered excellent performance for the detection of glucose, including high sensitivity of 4700 μA cm −2 mM −1 in the linear range from 0.004 to 3.2 mM, and low detection limit of 0.14 μM. These results suggest that Cu 2 O/PEDOT/rGO/GCE is an outstanding non-enzymatic sensor for the detection of glucose. The excellent response can be attributed to the unique multi-layered graphene structure of the modified electrode, in which highly conductive PEDOT enhances the electrocatalytic oxidation activity of cuprous oxide nanoparticles.
研究领域:
生物化学
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电化学传感器
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材料科学
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2024
·
IF 1.3
Aiping Wang,Aihua Zhou,Jing Sui
In this work, an electrochemical sensor for simultaneous detection of hydroquinone (HQ) and catechol (CC) has been developed based on nanocomposite of Au nanoparticles (AuNPs) decorated poly(3,4-ethylenedioxythiophene) (PEDOT) nano-horns. AuNPs-PEDOT nanocomposite with a novel porous structure formed by lots of interconnected horn-like PEDOT has been facially prepared via a one-pot interfacial polymerization. The top and root-end diameters of horn-like PEDOT are around10 nm and 100 nm, respectively, while AuNPs with diameter ranging from 3 to 10 nm are evenly dispersed on PEDOT. The as-synthesized AuNPs-PEDOT nanocomposite modified glassy carbon electrode (GCE) exhibits high electrocatalytic property and excellent selectivity towards the redox reaction of HQ and CC. The AuNPs-PEDOT/GCE can simultaneously detect HQ and CC with detection limits (S/N = 3) of 0.38 µM and 0.43 µM for HQ and CC respectively. Moreover, the modified electrode has excellent selectivity and is successfully applied to detect HQ and CC in real tap water sample with recovery of 95.2–104.1% and 96.2–105.6%, respectively.
研究领域:
分析化学
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纳米材料科学
·
环境监测
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Shuaishuai Yang,Lijian Sun
Cellulose fibers(CFs)-based electrode materials are of considerable interest for future wearable electronic devices due to excellent flexibility and strength, and hydrophilicity. The effective introduction of electrode materials into CFs is essential for flexible supercapaciotors(SCs). A tunable electrochemical performance of conductive polymers for poly(3,4-ethylenedioxythiophene)(PEDOT) has been aroused great interests. Herein, we design its electrochemical process via sodium anthraquinone-2-sulfonate(AQS) as dopant and electrolyte additive to construct active electrode interior and interface. As a result, the PEDOT@CFs electrode exhibits great increase of doping level from 0.16 to 0.29, conductivity from 353.46 to 626.15 S m −1 , and specific capacitance from 140.22 to 1211.57 F g −1 at a current density of 0.2 A g −1 . Furthermore, the PEDOT:AQS@CFs electrode possess excellent cyclic stability (96.01 %) after 1000 cycles. The work reveals the mechanism of AQS as dopant and electrolyte additive, and provides a new perspective for application of PEDOT in energy storage field.
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
危险品化学品经营许可证（带存储）