JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2022
·Vol. 37
·期 4
·765-772
·
IF 1.271
Du Yonggang,Shi Gonghui,Wang Jiaming,Wang Yiming,Wang Xuhua,Wang Liwei,Yang Jinhui,Ren Shitong
The bio-based epoxy nanocomposite (GAER/DOPO-POSS) was prepared from gallic epoxy resin (GAER) and polyhedral oligomeric silsesquioxane (which containing 9,10-dihydrogen-9-oxo-10-phosphorus-phenanthrene-10-oxide groups, called DOPO-POSS). The polyhedral oligomeric silsesquioxane containing epoxy groups (E-POSS) was grafted onto aminated graphene oxide (E-GO), then the novel POSS-E-GO was obtained. The POSS-E-GO was used as modifier for GAER/DOPO-POSS nanocomposite. The influences of POSS-E-GO content on mechanical properties, dynamic mechanical properties and thermal stability of GAER/DOPO-POSS nanocomposites were determined. The experimental results show that POSS-E-GO can significantly improve the toughness of the GAER/DOPO-POSS nanocomposite. When 0.5wt% POSS-E-GO was added in GAER/DOPO-POSS nanocomposite, the impact strength of the nanocomposite was 4.74 kJ/m 2 higher than that in the absence of POSS-E-GO, meantime the initial thermal degradation temperature was 277 °C.
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高影响因子
ACS Omega
·
2022
·
IF 4.132
Wenyuan Duan,Yanlin Li,Youyang Zhao,Huimin Zhang,Jiao Liu,Yuzhen Zhao,Zongcheng Miao
K0.25V2O5 (KVO) and K0.25V2O5/graphene oxide (KVO/GO) have been successfully synthesized by a chemical coprecipitation method and a subsequent calcination process. The structure and morphology of KVO and KVO/GO were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The as-obtained vanadate and vanadate modified by GO materials were used as anodes with LiMn2O4 as a cathode and saturated LiNO3 as an electrolyte to assemble an aqueous rechargeable lithium-ion battery (ARLB). The cyclic voltammogram curves of both KVO and KVO/GO electrodes exhibited three pairs of redox peaks corresponding to charge/discharge platforms. We found that a small amount of graphene oxide added improved the electrochemical performance more significantly than excess graphene oxide. The as-prepared KVO/GO//LiMn2O4 could not only improve the initial discharge capacity but could also reduce the attenuation at a high current density. Furthermore, the ARLB with a KVO/GO anode exhibited an excellent rate performance and super long cycle life. These good electrochemical properties of this new ARLB system actually provided feasibility for application in large-scale power sources and energy storage devices.
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PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2021
·
IF 4.158
Huanhuan Zhang,Tao Liang,Yuzhi Liu,R.D.K. Misra,Ying Zhao
Low surface free energy coating can effectively suppress the initial adhesion of fouling organism. However, continuous attack of corrosive medium will inevitably weaken the coating barrier effect. Herein, a novel self-healing coating based on fluorine‑silicon copolymer (FSiAC) and 0.1 wt% graphene oxide (GO) was prepared by free radical copolymerization . The formed GO/FSiAC coating with the surface free energy of 22.6 mJ/m 2 effectively suppressed the adhesion of chlorella, and the inhibition rate was 97%. EIS results showed that the impedance of GO/FSiAC coating increased and the coating porosity decreased with immersion time, indicating that the coating had self-healing property. DSC and FTIR measurements revealed that during the immersion process, the coating cross-linking degree increased due to the formation of net-like Si-O-Si structure. The barrier performance of GO and the self-healing capacity contributed to the superior corrosion resistance of the coating. The outstanding antifouling property is dependent on the low surface free energy of the coating and the antibacterial effect of GO. Novel GO/FSiAC coating with excellent antifouling and good self-healing anticorrosion performance has a potential application in marine engineering fields.
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高影响因子
Polymer-Plastics Technology and Materials
·
2021
·
IF 2.371
Guozheng Cao,Wenying Zhou,Yujia Kou,Ying Li,Ting Li,Yun Wang,Dan Cao,Hongju Wu,Guangheng Wang,Zhi-Min Dang
To suppress the high dielectric loss of graphene oxide (GO)/poly(vinylidene fluoride) (PVDF) while still maintaining a high dielectric constant (k) near the filler percolation threshold, herein, GO nanosheets coated with polyvinyl pyrrolidone (PVP), poly(dopamine) (PDA) and tannic and Fe coordination complexes (TA-Fe), respectively, were incorporated into PVDF to investigate the effects of the three kinds of insulating interlayers on the dielectric properties of the nanocomposites. The results indicate that compared with pristine GO, all surface modified GO exhibit homogeneous dispersion in the matrix owing to the enhanced interface between fillers and matrix, and that the dielectric loss of the nanocomposites are significantly suppressed to rather low levels thanks to the presence of various insulating interlayers between GO nanosheets, which prevent them from direct contact, thereby remarkably reducing the leakage current and conductivity. Moreover, Activation energies for the pristine and modified GO/PVDF nanocomposites are calculated, respectively, and the introduction of insulating interlayers significantly reduces the relaxation activation energy of the nanocomposites.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·
IF 5.816
Chengbao Liu,Dongchen Shen,Zhengkai Tu,Song Li
Li + doping is regarded as an effective strategy to enhance the room-temperature hydrogen storage of metal-organic frameworks (MOFs). In this work, Li + is doped into both MIL-100(Fe) and MIL-100(Fe)/graphene oxide (GO) composite, and it is demonstrated that the hydrogen uptake of Li + doped MIL-100(Fe)/GO (2.02 wt%) is improved by 135% compared with Li + doped MIL-100(Fe) (0.86 wt%) at 298 K and 50 bar, which is ascribed to its higher isosteric heat of adsorption (7.33 kJ/mol) resulting from its more accessible adsorption sites provided by doped Li + ions and ultramicropores. Grand canonical Monte Carlo (GCMC) simulation reveals that Li + ions distributing in the interface between MIL-100(Fe) and GO within MIL-100(Fe)/GO composite is favorable for hydrogen adsorption owing to the increased number of adsorption sites, thus contributing to the enhanced hydrogen storage capacity. These findings demonstrate that MIL-100(Fe)/GO is a more promising Li + doping substrate than MIL-100(Fe).
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2020
·
IF 16.683
Wenkai Pei,Junyang Zhang,Haijian Tong,Mengna Ding,Fengyan Shi,Ruizhe Wang,Yuning Huo,Hexing Li
The serious problem from pollution of metal ions placed great pressure to global water ecosystem and human beings. Herein, a synergistic photocatalytic-photothermal system of integrated membrane for the removal and reutilization of aqueous Ag + ions was designed. The crystal of zeolitic imidazolate frameworks-67 (ZIF-67) stably grew on the graphene oxide (GO) membrane with the uniform distribution. In the ZIF-67/GO membrane, the adsorption and photo-reduction of Ag + ions on ZIF-67 crystals led to the deposition of Ag nanoparticles on the membrane surface, which facilitated the capture of visible light, suppressed the recombination of the electron-hole pairs and promoted the photothermal effect. Meanwhile, the high efficiency of photothermal conversion on GO substrate realized the water evaporation to concentrate the Ag + solution and inhibited the separation of photo-induced charges. The synergistic photocatalytic-photothermal route on ZIF-67/GO membrane provides a new sight for the recycle of metal ions for the future practical applications.
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高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2020
·Vol. 167
·期 2
·027508
·
IF 3.721
Kaili Cui,Guanghan Li,Luyan Wang,Wenjuan Guo,Meishan Pei
In this work, a novel ON/OFF aptasensor was designed with a composite film consisting of carboxylated graphene oxide (GO) and poly(4-vinyl pyridine) (P4VP) for the accurate and sensitive detection of AFB1. The "on" and "off" behavior of the electrochemical sensor could be controlled by the pH sensitive P4VP. Through continuous switching of solution pH value below and above pKa of P4VP (pKa = 4.9), the conversion in the reversible electron transfer between protonized or deprotonized P4VP and the electrochemical probe was used to control the "ON" and "OFF" state of the electrochemical sensor. The condition was optimized when the electrochemical sensor is kept "ON" state, finding that the aptasensor showed highest current signal and the best electrochemical performance at pH = 4. Here the addition of P4VP not only could significantly improve the current signal at pH = 4 but also increase the stability of the modified electrode. Carboxylated GO was able to form an amide linkage with an amino-modified aptamer to fix the aptamer more firmly and increase the immobilized quantity of aptamer. On the basis of the excellent electrochemical performance of GO-P4VP composite, the designed biosensor exhibited a wide linear range from 0.01 to 50 ng ml−1 and a low detection limit of 14.75 pg ml−1.
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高影响因子
IONICS
·
2020
·Vol. 26
·期 9
·4463-4471
·
IF 2.394
Jia Runping,Huang Zhixiong,Zhao Cheng,Liu Xin,Wang Dayang,Hui Zi,Zuo Mingming,Shi Shaojun,Xu Xiaowei
Transition metal carbonates (TMCs) were studied as anode material for lithium-ion battery (LIB) by virtue of the high capacity; however, low ionic conductivity, poor electronic conductivity, and unstable cycle performances hindered their applications. Therefore, in this work, single-phase Mn 1− x Co x CO 3 and graphene oxide composites were synthesized by an ultrafast low temperature reaction route assisted with microwave. A high specific capacity of 1204 mA h g −1 was achieved by the composites. It also delivers 659.9 mA h g −1 after 100 cycles at 200 mA g −1 and 476 mA h g −1 after 500 cycles even at 1000 mA g −1 . Such preferable electrochemical performance is caused by the synergistic effect of single-phase Mn–Co crystal structure and the functionality of graphene oxide. Therefore, it is promising to obtain mixed transition metal carbonate and graphene oxide composites through ultrafast microwave solvothermal process.
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高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Xiaohong Wang,Xin Li,Chengxiang Huang,Chen Hao,Cunwang Ge,Yaning Guo
Herein, the NiCo 2 Al-LDH/N-GO electrode was first and successfully synthesized by a simple and environmental-friendly method. The NiCo 2 Al-LDH/N-GO electrode has a high specific capacitance of 1136.67F g −1 at a current density of 1 A g −1 , and the specific capacitance retention rate maintained 90.10% after 5000 cycles at a current density of 10 A g −1 . The prepared NiCo 2 Al-LDH/N-GO electrode has excellent electrochemical performance and cycle performance. In addition, the ASC device was assembled using NiCo 2 Al-LDH/N-GO as the positive electrode and activated carbon as the negative electrode with KOH/PVA as gel electrolyte. The NiCo 2 Al-LDH/N-GO//AC asymmetric capacitor exhibits a high energy density of 42.25 Wh kg −1 at a power density of 800 W kg −1 and 11.39 Wh kg −1 at a power density of 8 kW kg −1 . Thus, NiCo 2 Al-LDH/N-GO electrode shows the potential application in energy storage device.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Wenzhuo Chen,Liping Sun,Qiang Li,Lihua Huo,Hui Zhao
Defect-rich MoS 2 /r-GO hybrids are successfully synthesized via microwave-assisted solvothermal process, and their electrocatalytic properties for hydrogen evolution reaction (HER) are evaluated. The hybrids exhibit low overpotential of 86 mV at 10 mA cm −2 , with a Tafel slope of 44 mV dec −1 as well as promising long-term stability. The activation energy required by HER is 25.4 kJ/mol, and the faraday efficiency reaches 86.3% at −0.16 V (vs. RHE). The attractive performance can be attributed to the abundant defects generated in highly disordered MoS 2 phase, which help to expose a large number of active sites. In addition, the interaction between r-GO and MoS 2 particles promotes the charge transfer process. This work provides a simple strategy for the rational design and mass fabrication of defect-rich MoS 2 -based electrocatalysts for hydrogen evolution reaction.
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高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2020
·Vol. 22
·期 5
·1-13
·
IF 2.132
Maimaiti Halidan,Wang Shixin,Awati Abuduheiremu,Xu Bo
Graphene oxide/silica (GO/SiO 2 ) containing various inorganic particles is obtained by using the Xinjiang Wucaiwan coal as carbon source and silicon source. The ruthenium/graphene oxide/silica (Ru/GO/SiO 2 ) composite was prepared by loading Ru nanoparticles on the surface of GO/SiO 2 . Then, the photocatalytic ammonia synthesis performance was investigated while characterizing the structure of Ru/GO/SiO 2 . On the one hand, the Ru can be sufficiently dispersed to make the surface plasmon resonance (SPR) effect enhance significantly. On the other hand, the quantum confinement effect of the defect structure on the Ru/GO/SiO 2 can effectively separate electron and hole, and it can participate in the reducing/oxidizing reaction of photocatalytic ammonia synthesis.
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高影响因子
CARBON
·
2020
·
IF 8.821
Yue Liu,Fengrui Zhang,Wenxia Zhu,Dong Su,Zhiyuan Sang,Xiao Yan,Sheng Li,Ji Liang,Shi Xue Dou
Removing contaminants from wastewater is critical to secure the global water supply. Membrane technologies for water purification are exceptionally attractive due to their high efficiency and low energy consumption. The traditional porous polymer films , however, are easy to be fouled by the organic pollutants, causing pore blockage and deteriorated separation performance. We herein report the rational design of a porous SiO 2 /GO hybrid membrane by coupling graphene oxide (GO) nanosheets with SiO 2 nanoparticles and using ethylenediamine to crosslink them, for efficient oil/water separation and dye removal. The SiO 2 nanoparticles provide an excellent hydrophilicity and underwater superoleophobicity interface, resulting in efficient and antifouling oil/water separation with an outstanding rejection rate over 99.4% for different types of oil; and the hierarchical scaffold, formed from the hydrophilic GO nanosheets embedded with SiO 2 nanoparticles, greatly facilitates the rapid permeation of water with a high flux rate of up to 2387 L m −2 h −1 for pure water and 470 L m −2 h −1 for oil/water separation. Moreover, the abundant functional groups on the GO surface also render this membrane with a high removal capability for dye blocking, enabling it to remove soluble pollutants in molecular dimensions as well. This design strategy not only provides an outstanding membrane for water purification but also sheds light on the design of multi-purpose functional membranes for a variety of energy and environment-related applications.
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高影响因子
危险品化学品经营许可证（带存储）