Journal of Inorganic and Organometallic Polymers and Materials
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2024
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IF 3.9
Pang Wanyu,Gao Yali,Chang Xile,Du Guodong,Hu Zhiyong,Hu Tuoping,Ma Xuemei
An ultra-sensitive paper-based sensor for the rapid and specific detection of apigenin in Scutellaria barbata D. Don was developed. The construction process of the proposed apigenin sensor was to grow ZIF-8 in situ with MXene as a template on carbon paper (CP) electrode. The MXene with excellent conductivity and ZIF-8 with porous structure showed synergistic effect in promoting electron transfer and increasing the number of binding sites, thus providing a highly sensitive detection for apigenin. Under optimal conditions, the sensor showed an excellent linear relationship in the range of 0.01 to 10 µM, with a detection limit of 2.6 nM. This study not only constructed a new sensing platform for sensitive detection of apigenin, but also provided a new method for the detection of apigenin in Scutellaria barbata D. Don, which was of great significance for promoting the construction of an electrochemical sensor for apigenin.
研究领域:
分析化学
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植物化学
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电化学传感器
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产品关联
DOI
高影响因子
Analytical Methods
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2023
·Vol. 15
·期 36
·4736-4743
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IF 3.1
Wanyu Pang,Yali Gao,Tuoping Hu,Xuemei Ma
Rapid and accurate determination of luteolin is of great significance for pharmaceutical quality control. Herein, a disposable and sensitive luteolin sensor was fabricated by a hydrothermal method with carbon paper as substrate where ZIF-8 grew on GR in situ. Notably, the large specific surface area of ZIF-8 provided active sites on the electrode surface and the ability of GR to promote electron transfer greatly improved the sensitivity towards the oxidation of luteolin. Under the optimum conditions, the ZIF-8@GR/CP showed excellent detection performance for luteolin with a linear detection range of 0.04–3.2 μM and 3.2–120 μM, with LOD of 12 nM (S/N = 3). Furthermore, this disposable and sensitive sensor was successfully applied for the quantitative detection of luteolin in a capsule of Lamiophlomis rotata.
研究领域:
分析化学
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药学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2024
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IF 4.1
Xuemei Ma,Yali Gao,Wanyu Pang,Xile Chang,Zhiyong Hu,Tuoping Hu
The design of efficient electrocatalysts for the determination of chlorogenic acids (CGA) is crucial in the biological and medical fields. In this paper, ZIF-67/poly(3,4-ethylenedioxythiophene) (PEDOT) nanocomposites were synthesised. The introduction of PEDOT increased the electrical conductivity of the ZIF-67/PEDOT composites, inhibited the Co atom agglomeration, led to the exposure of more active sites and increased the transport channels. An ultrasensitive CGA sensor based on ZIF-67/PEDOT nanocomposite modified carbon paper (CP) electrode was developed. The nanomaterials were characterised using scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction spectroscopy (XRD). Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used to study the electrochemical properties of the modified CP electrode. In addition, the effects of different experimental conditions such as pH, scan rate and concentration on the peak current of CGA were investigated. Under the optimised conditions, the linear range of ZIF-67/PEDOT/CP for the determination of CGA was 0.1 ∼ 40 μM, and the limit of detection (LOD) was as low as 0.003 μM (S/N = 3). Furthermore, the sensor was successfully used for the quantitative analysis of CGA in real samples.
研究领域:
生物医学
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分析化学
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材料科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2021
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IF 5.816
Mengwei Guo,Zhuoming Wei,Qibo Zhang
The rational design and synthesis of highly efficient, precious metal-free electrocatalysts in the promotion of electrochemical water oxidation is essential for the sustainable use of renewable energy. Herein, an integrated, S-doped MnO x /Mn film developed on carbon paper (CP) formed by a two-step transformation approach that includes template-free electrodeposition and in-situ electrochemical oxidation is employed as an efficient oxygen evolution reaction (OER) electrocatalyst. The doping of S and in-situ electro-oxidation lead to a tailored electronic structure and phase composition , which endow the composite electrode with a significantly enhanced OER catalytic performance. This S-doped integrated electrode perfectly combines highly active MnO x outer layers with conductive metallic Mn inner layers to offer abundant catalytic interfaces and electronic paths, leading to favorable reaction kinetics. As a result, the optimal S-doped MnO x /Mn/CP offers a low overpotential of 435 mV at 10 mA cm −2 with a Tafel slope of 89.97 mV dec −1 as well as improved stability. Impressively, a highly intrinsic catalytic activity with a turnover frequency of 0.0112 s −1 is obtained for S-doped MnO x /Mn/CP, which is 4.2-fold higher than that of MnO x /Mn/CP. S doping plays a critical role in stabilizing the Mn III O x active phase and is ultimately responsible for the enhanced catalytic performance. This work provides an integrated design concept and S doping approach suitable for boosting the OER catalytic performance of MnO x .
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2016
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IF 6.333
Zhaoling Ma,Zhen Li,Kui Hu,Dongdong Liu,Jia Huo,Shuangyin Wang
The high-energy Li S battery suffers from poor cycling performance due to the shuttle effect of the polysulfides . Strategies must be adopted to suppress the diffusion of polysulfides into the electrolyte in Li S battery . In this work, for the first time, we adopt hydrophilic carbon paper anchored by hierarchically porous cobalt disulfides as the interlayer for capturing polysulfides through physical absorption and chemical bonding. Hierarchical pores can physically adsorb polysulfides, and moreover cobalt disulfide can trap the polysulfides by forming strong chemical interaction. The sulfur-graphene composite with a sulfur content of 70.5% delivers a high initial capacity of 1239.5 mAh g −1 at 0.2 C and retains a reversible capacity of 818 mAh g −1 after 200 cycles. In spite of a little capacity contribution by the insertion of lithium ions into cobalt disulfide for the initial cycles, it disappears in the subsequent cycling. Therefore, the as-developed porous transition metal disulfides on carbon paper as the interlayer could significantly enhance the cycling performance of Li S batteries.
研究领域:
材料科学
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电化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Yuan Tian,Yongling An,Chuanliang Wei,Yuan Tao,Yuchan Zhang,Huiyu Jiang,Liwen Tan,Jinkui Feng,Yitai Qian
Lithium (Li) metal anode is deemed as one of the most fascinating anodes due to its high energy density . Nonetheless, low Coulombic efficiency and safety issues caused by detrimental Li dendrites growth severely hamper its practical application. Herein, we construct an ultrafine TiO 2 confined in 3D freestanding carbon paper by one-step green in-situ oxidation of Ti 3 C 2 T x MXene film with greenhouse gas CO 2 . The lithiophilic TiO 2 seeds and freestanding 3D carbon matrix can synergistically induce uniform Li deposition and buffer the volume changes during lithium striping and deposition, which ensure improved electrochemical performance with high Coulombic efficiency and low overpotential, etc . The growth process of metallic Li on C/TiO 2 is also systematically investigated. Moreover, the C/TiO 2 @Li||LiFePO 4 full batteries present a stable cycling performance over 250cycles at 1.0C and superior rate performance. Additionally, this work proposes an alternative way to utilize CO 2 , which may alleviate greenhouse effect and boost sustainable development. These results may be useful for both the design of dendrite-free lithium metal batteries and the sustainable utilizing of CO 2 .
研究领域:
材料科学
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能源存储
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可持续发展
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产品关联
DOI
高影响因子
International Journal of Minerals Metallurgy and Materials
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2020
·Vol. 27
·期 12
·1687-1694
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IF 1.713
Tian Dong-hua,Han Zhen-chao,Wang Ming-yong,Jiao Shu-qiang
Graphite materials are widely used as electrode materials for electrochemical energy storage. N-doping is an effective method for enhancing the electrochemical properties of graphite. A novel one-step N-doping method for complete and compact carbon paper was proposed for molten salt electrolysis in the LiCl-KCl-Li 3 N system. The results show that the degree of graphitization of carbon paper can be improved by the electrolysis of molten salts, especially at 2.0 V. Nitrogen gas was produced at the anode and nitrogen atoms can substitute carbon atoms of carbon paper at different sites to create nitrogen doping during the electrolysis process. The doping content of N in carbon paper is up to 13.0wt%. There were three groups of nitrogen atoms, i.e. quaternary N (N-Q), pyrrolic N (N-5), and pyridinic N (N-6) in N-doping carbon paper. N-doping carbon paper as an Al-ion battery cathode shows strong charge-recharge properties.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
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2020
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IF 3.421
Zhoulu Wang,Yingbin Xia,Li Liu,Aoning Wang,Yi Zhang,Xiang Liu
Transition-metal oxides are a prospective anode material for lithium ion battery because of their high theoretical specific capacity. However, the insulating nature of these oxides causes sluggish electron transport, hindering them from reaching theoretical capacity. Herein, we prepared NiCo2O4 nanowires (NiCo2O4 NWs) on carbon papers (CPs) by a hydrothermal method. The structural characterization shows that a large number of NiCo2O4 NWs were aligned on the CPs, forming an interconnected network. This unique architecture could enhance electrical conductivity and accommodate NiCo2O4 expansion during lithiation. Thus, the NiCo2O4 NWs/CPs composite electrode exhibits outstanding capacity and ideal cycling performance. The reversible capacity of the first cycle is 1024.9 mAh g–1 and remains to be 1016.7 mAh g–1 after 200 cycles at 100 mA g–1. Our work provided a high performance anode for lithium ion batteries.
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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2021
·Vol. 168
·期 12
·120542
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IF 4.316
Ke Qu,Yuqi Bai,Miao Deng
The ever-increasing need for small and lightweight power sources for use in portable or wearable electronic devices has spurred the development of supercapacitors as a promising energy storage and conversion system. In this work, a simple, facile and easy-to-practice method has been developed to employ carbon paper (CP) as the support to coat molybdenum disulfide (MoS2) and graphene oxide (GO), followed by electrodeposition of polyaniline (PANI) to render CP/MoS2-GO-PANI. The preparation parameters, such as amounts of MoS2, GO and number of aniline electropolymerization cycles, have been optimized to render CP/MoS2-GO-PANI the best capacitive performance. The as-prepared optimal CP/MoS2-GO-PANI is characterized by X-ray powder diffraction, scanning electron microscopy, energy-dispersive spectroscopy, and X-ray photoelectron spectroscopy. The supercapacitive properties of CP/MoS2-GO-PANI as an electrode have been evaluated electrochemically via cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy testing. CP/MoS2-GO-PANI delivers a specific capacitance of 255.1 F g−1 at 1.0 A g−1 and exhibits excellent rate capability under larger current densities. Moreover, a symmetrical supercapacitor is assembled and three are connected in series to power a light-emitting diode for ∼15 min, demonstrating the promising application potential of CP/MoS2-GO-PANI-based supercapacitor.
研究领域:
材料科学
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能源存储
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产品关联
DOI
高影响因子
RARE METALS
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2025
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IF 11
Yang Hui-Ying,Zhao Yu,Huang Ke-Lei,Meng Xiang-Chao
Combining interfacial solar evaporation with a three-phase photocatalytic system can theoretically improve the production efficiency of ammonia. Herein, we designed a simple solar evaporator via in situ growth of TiO 2 onto hydrophilic carbon paper using a fast Joule heating method. This system had porous channels for high water evaporation rates, wide light-responsive wavelength range, effective light absorption, and potentially high catalytic activity. The lattice disorder and oxygen vacancies created by the rapid heating and cooling process could be reaction sites for nitrogen adsorption and activation. The ammonia yield in the three-phase system was up to 360.37 mol·g −1 ·h −1 , which was higher than the two-phase system (17.14 μmol·g −1 ·h −1 ). Additionally, the ammonia yield rate was 73.65 μmol·g −1 ·h −1 in an outdoor test, demonstrating the potential for large-scale solar nitrogen reduction reaction (NRR). As detected, the activation energy for N 2 reduction to NH 3 was reduced to 26.3 kJ·mol −1 , indicating that this process was facilitated by the design of the photothermal–photocatalytic system. Furthermore, density functional theory (DFT) calculations confirmed the roles of oxygen vacancies as active sites in promoting the NRR. This work provided a new approach to applying solar evaporators for the highly efficient ammonia production by the synergistic effects of photothermal and photocatalytic processes. Graphical abstract
研究领域:
化学
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环境科学
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材料科学
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产品关联
DOI
高影响因子
International Journal of Electrochemical Science
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2023
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IF 1.5
Chang Liu,Shang Li,Yijing Xing,Huan Kang,Jinting Tan,Wei Guo,Mu Pan
Polyaniline (PANI) nanofibers were synthesized on carbon paper by electrochemical method, then heat-treated at temperatures of 800°C, 900°C, 1000°C and 1100°C to obtain a gas diffusion electrode (GDE). Fourier Transform infrared spectroscopy (FTIR), Scanning electron microscope (SEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were used to characterize the catalysts. The metal-free C-N catalyst with a reticular structure was coated on carbon paper. The ORR (oxygen reduction reaction) activity of metal-free C-N catalysts was evaluated by cyclic voltammetry (CV) and rotating disk electrode (RDE) in HClO 4 . The results showed that the catalysts heat-treated at 1000°C had the best ORR activity and better stability compared with the commercial Pt-based catalysts in acidic medium. The result of XPS showed that the activity of metal-free C-N catalysts was related to the pyridinic-type nitrogen. Finally, the advantages and disadvantages of these catalysts were discussed for further investigation.
研究领域:
材料科学
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电化学
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能源技术
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DOI
高影响因子
ADVANCED ENGINEERING MATERIALS
·
2021
·Vol. 23
·期 10
·2100305
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IF 3.862
Li Chen,Tao Fang,Chenying Song,Wenbo Ju,Hailong Li,Jian Hu
Carbon papers (CPs), as the substrate materials for gas diffusion layers in proton exchange membrane fuel cells, require high electrical conductivity, efficient gas permeability, and robust mechanical properties, which are unable to be completely satisfied by graphitization at a high temperature. Herein, the boron-catalytic graphitization of CPs is reported. The boron-doped CP matrix starts to graphitize at 1800 °C, and evolves into well-oriented graphitic carbon at 2100 °C. In contrast, the graphitization temperature for undoped CPs increases by several 100 degrees. The boron-doped CPs achieve the in-plane electrical conductivity of around 4.8 × 10 4 S m −1 after graphitization at 2100 °C, which is ≈2 times as high as that of undoped CPs graphitized at 2700 °C. In addition, the tensile strength of the former one is 1.7 times of that of the latter one. The through-plane gas permeability of boron-doped CPs is comparable to that of a commercial Toray CP. Boron-catalytic graphitization at a moderate temperature provides a more sustainable pathway of producing high-performance CPs.
研究领域:
材料科学
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能源科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）