Frontiers of Materials Science
·
2023
·Vol. 17
·期 3
·1-12
·
IF 2.7
Kang Min,Cheng Yizhu,Hu Yinchun,Ding Huixiu,Yang Hui,Wei Yan,Huang Di
Autonomous self-healing hydrogels were achieved through a dynamic combination of hydrogen bonding and ferric ion (Fe 3+ ) migration. N,N ′-methylenebis (acrylamide) (MBA), a cross-linking agent, was added in this study. Poly(acrylic acid) (PAA)/Fe 3+ and PAA–MBA/Fe 3+ hydrogels were prepared by introducing Fe 3+ into the PAA hydrogel network. The ionic bonds were formed between Fe 3+ ions and carboxyl groups. The microstructure, mechanical properties, and composition of hydrogels were characterized by field emission scanning electron microscopy and Fourier transform infrared spectroscopy. The experimental results showed that PAA/Fe 3+ and PAA–MBA/Fe 3+ hydrogels healed themselves without external stimuli. The PAA/Fe 3+ hydrogel exhibited good mechanical properties, i.e., the tensile strength of 50 kPa, the breaking elongation of 750%, and the self-healing efficiency of 82%. Meanwhile, the PAA–MBA/Fe 3+ hydrogel had a tensile strength of 120 kPa. These fabricated hydrogels are biocompatible, which may have promising applications in cartilage tissue engineering.
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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·Vol. 333
·期 4
·2069-2080
·
IF 1.5
Gong Mi,Zhou Xiayu,Yang Xinxu,Grimes Craig A.,Tang Ziwei,Yang Shengyuan,Wang Yue,Xiong Lihao,Song Jiayi,Li Le,Zhen Deshuai
Presented is an infrared-induced sensor constructed of upconversion nanoparticles and DNAzyme for ultra-sensitive, and rapid detection of uranyl ions. The detection method eliminates the use of chemically labeled nucleic acid probes, possesses high selectivity, and a uranyl detection limit of 39 nM. The technique is successfully applied to the detection of uranyl in various water samples as well as human serum, illustrating the excellent sensitivity and specificity of the quantification platform.
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WATER AIR AND SOIL POLLUTION
·
2024
·Vol. 235
·期 1
·1-20
·
IF 3.8
Liu Bangwei,Zhou Yan,Zhang Yiwei,Chen Dandan,Liu Wenhui,Lu Ping,Su Xiaoyu,Xia Tian
A zero-valent iron-loaded corn straw char (ZVI-CSC) was synthesized in this study for the remediation of As(V) and Cd(II) contamination. The impact of ZVI-CSC on the adsorption performance of As(V) and Cd(II) in solution, as well as their migration properties in soil, was investigated through adsorption kinetics and soil column leaching experiments, respectively. The results showed that the adsorption capacity of As(V) by ZVI-CSC was significantly improved to 14.42 g·kg −1 at pH = 3, compared with unmodified corn straw char (CSC). However, the adsorption capacity of Cd(II) was not improved. In the leaching experiments, the addition of ZVI-CSC to As(V)-contaminated soil resulted in a significant reduction of cumulative As(V) release rate from 32.26 to 3.11%, compared with corn straw char (CSC). Moreover, the role of ZVI in As(V)/Cd(II) remediation was analyzed. nZVI forms ≡Fe-OH and ≡Fe-OOH due to oxidation, which can form monodentate and bidentate complexes with As(V) via ligand exchange, thus promoting As immobilization. Furthermore, to further improve the adsorption performance of Cd(II), the electrostatic potential (ESP) of biochars with different surface functional groups (C = O, C–O–C, –OH, and –COOH) and their bond dissociation enthalpy (BDE) with As(V) and Cd(II) were calculated based on density functional theory (DFT). The results showed that –OH was the most effective for As(V) adsorption, and C–O–C was the most effective for Cd(II) adsorption. C = O and –COOH can be used to the simultaneous adsorption of As(V) and Cd(II). Therefore, the surface functional groups of ZVI-CSC can be selectively modified to improve its adsorption performance of As(V) and Cd(II). Graphical
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Nano Research
·
2023
·Vol. 16
·期 7
·9507-9518
·
IF 9.9
Wu Hao,Song Ziyu,Feng Wenfang,Zhou Zhibin,Zhang Heng
Rechargeable lithium metal batteries (RLMBs) have been regarded as promising successors for contemporary lithium-ion batteries, in view of their high gravimetric and volumetric energy densities. Conventional non-aqueous liquid electrolytes containing organic carbonate solvents possess high chemical reactivities with metallic lithium anode and high flammability, which induces considerable safety threats under extreme conditions (e.g., overcharging and thermal runaway). Herein, we propose the utilization of fluorinated sulfonamide (i.e., N,N-dimethyl fluorosulfonamide (DMFSA)) as solvent, together with lithium (fluorosulfonyl)( n -nonafluorobutanesulfonyl)imide (LiFNFSI) as co-salt and/or electrolyte additive for accessing safer and high-performing RLMBs. Comprehensive physical (e.g., thermal transition, viscosity, and ionic conductivity) and electrochemical (e.g., anodic stability on different electrodes) characterizations have been performed, aiming to reveal the inherent characteristics of the sulfonamide-based electrolytes and the particular role of LiFNFSI on the stabilization of LiCoO 2 cathode. It has been demonstrated that the sulfonamide-based electrolytes exhibit superior flame-retardant abilities and decent ionic conductivities (> 1 mS·cm −1 at room temperature). The incorporation of LiFNFSI as co-salt and/or electrolyte additive could significantly suppress the side reactions occurring at the cathode compartment, through the preferential decompositions of the FNFSI − anion. This work is anticipated to give an in-depth understanding on the working mechanism of LiFNFSI in the sulfonamide-based electrolytes, and also spurs the development of high-energy and safer RLMBs.
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JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 20
·8346-8358
·
IF 4.5
Guo Rui,Zhang Yuyu,Wang Lun,Huang Yin,Yuan Rui,Yang Li,Chang Guanjun
Design readily available and inexpensive aerogels as potential sorbent materials for oil–water separation is extremely significant because of the increasing discharge of domestic oil pollution. Hereby, a novel superhydrophobic indole-based hemiaminal aerogel (PCINA) without any post-surface treatment was fabricated by a facile, simple and mild method via sol–gel technology followed by freeze-drying. The as-obtained indole-based hemiaminal aerogel exhibited high absorption capacity for varieties of oils and organic solvents. In addition, the separation efficiency of oil–water mixture was as high as 99.8%, even the separation efficiency of emulsion could achieve to 98.2%. More excitingly, the indole-based hemiaminal aerogel PCINA possessed repeatability and regeneration due to the feasible desorption and rapid degradation, suggesting that the green and renewable aerogel was a promising material for the treatment of oil contaminants in different fields. Graphical abstract
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高影响因子
JOURNAL OF SOLUTION CHEMISTRY
·
2023
·Vol. 53
·期 2
·257-277
·
IF 1.2
Gao Xiang,Hong Biyuan,Zhang Meiyu,Li Dan
Carbonate esters are used as additives in biodiesel to improve its thermophysical properties for better applicability. In this work, the experimental densities, dynamic viscosities and refractive indices for binary mixtures of dimethyl carbonate and four fatty acid esters (methyl decanoate, ethyl decanoate, methyl laurate, ethyl laurate) have been measured and presented over the complete concentration range at temperatures range from 293.15 to 323.15 K under normal pressure. The excess molar volumes and the viscosity deviations of the four binary mixtures were calculated with the measured data and correlated with the Redlich-Kister equation. The excess Gibbs energy of activation was also calculated. From the values of excess properties of the binary mixtures and its deviations indicate that the changes of molecular interactions in the mixtures. The experimental results could be useful for the study of biodiesel-carbonate blended fuels.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 2
·707-717
·
IF 4.5
Sui Yudong,Yuan Yanru,Tan Pan,Jiang Yehua,Han Lina
This paper presents the experimental investigation of the effect of Nb 2 O 5 content on the phase composition, microstructure, and physical and mechanical performance of the zirconia-toughened alumina (ZTA) ceramics, aimed to optimize the additional amount of Nb 2 O 5 , refine the ceramic grains, and improve the densification, hardness and fracture toughness. ZTA ceramics with various Nb 2 O 5 contents were prepared using the spark plasma sintering method. The addition of trace amounts of Nb 2 O 5 did not produce a new Nb-rich phase; the Nb atoms were dissolved in the ZrO 2 grains. The addition of trace amounts of Nb 2 O 5 led to grain refinement and an increase in density, but the addition of excessive Nb 2 O 5 resulted in grain growth and a decrease in relative density. Furthermore, the addition of Nb 2 O 5 promoted uniformity of the microstructure. The sample with 0.25 wt.% Nb 2 O 5 had the maximum Vickers hardness and indentation fracture toughness, which were 1228.40 HV and 9.17 MPa √m, respectively. Mechanical properties of the composite mainly depended on the grain size, which was influenced to some extent by the relative density.
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JOURNAL OF MATERIALS SCIENCE
·
2016
·Vol. 51
·期 22
·10229-10244
·
IF 2.302
Ban Jianfeng,Zhu Linjiang,Chen Shaojun,Wang Yiping
Aiming to elucidate the influence of liquid crystal fillers on the structure and properties of liquid-crystalline (LC) shape-memory polyurethane (SMPU) composites, a series of LC-SMPU composites are successfully prepared by adding various concentrations of 4-dodecyloxybenzoic acid (DOBA) to shape-memory polyurethane containing 40 wt% hard segment content (SMPU40). The structure, morphology, thermal properties, liquid crystalline properties, and shape memory properties are systematically investigated. The results demonstrate that DOBA is successfully incorporated into the polymer matrix of SMPU40 without interrupting the dimerization structure of DOBA that allows it to exhibit LC properties. The incorporated DOBA not only improves the crystallizability of the soft segment but also promotes the crystallizability of the hard segment. The isothermal crystallization kinetics further reveal that the crystallization rate of the hard segment decreases as the DOBA content increases, and the crystallization of the LC-SMPU composites nucleates in a similar manner. The LC-SMPU composites are composed of a DOBA phase and an SMPU phase, which further forms soft phase–hard phase microphase separation structures. The composite tends to only maintain the nematic LC properties of DOBA due to the interruption of polyurethane chains. However, the LC-SMPU composites exhibit good triple-shape memory effects. The first step of strain recovery is associated with the melting transition of soft segment crystals of the polyurethane matrix, and the second step of strain recovery is resulted from the melting transition of the DOBA crystals.
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Nanoscale Research Letters
·
2021
·Vol. 16
·期 1
·1-8
·
IF 4.703
Han Haisheng,Song Yanli,Zhang Yongguang,Kalimuldina Gulnur,Bakenov Zhumabay
In recent years, the development of lithium-ion batteries (LIBs) with high energy density has become one of the important research directions to fulfill the needs of electric vehicles and smart grid technologies. Nowadays, traditional LIBs have reached their limits in terms of capacity, cycle life, and stability, necessitating their further improvement and development of alternative materials with remarkably enhanced properties. A nitrogen-containing carbon nanotube (N-CNT) host for bimetallic sulfide (NiCo 2 S 4 ) is proposed in this study as an anode with attractive electrochemical performance for LIBs. The prepared NiCo 2 S 4 /N-CNT nanocomposite exhibited improved cycling stability, rate performance, and an excellent reversible capacity of 623.0 mAh g –1 after 100 cycles at 0.1 A g –1 and maintained a high capacity and cycling stability at 0.5 A g –1 . The excellent electrochemical performance of the composite can be attributed to the unique porous structure, which can effectively enhance the diffusivity of Li ions while mitigating the volume expansion during the charge–discharge processes.
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高影响因子
Frontiers in Energy
·
2022
·Vol. 16
·期 5
·852-861
·
IF 2.964
Li Yonghuan,Song Wei,Jiang Guang,Yang Yue,Yu Hongmei,Shao Zhigang,Duan Fangwei,Yang Yingxuan
Fuel starvation can occur and cause damage to the cell when proton exchange membrane fuel cells operate under complex working conditions. In this case, carbon corrosion occurs. Oxygen evolution reaction (OER) catalysts can alleviate carbon corrosion by introducing water electrolysis at a lower potential at the anode in fuel shortage. The mixture of hydrogen oxidation reaction (HOR) and unsupported OER catalyst not only reduces the electrolysis efficiency, but also influences the initial performance of the fuel cell. Herein, Ti 4 O 7 supported IrO x is synthesized by utilizing the surfactant-assistant method and serves as reversal tolerant components in the anode. When the cell reverse time is less than 100 min, the cell voltage of the MEA added with IrO x /Ti 4 O 7 has almost no attenuation. Besides, the MEA has a longer reversal time (530 min) than IrO x (75 min), showing an excellent reversal tolerance. The results of electron microscopy spectroscopy show that IrO x particles have a good dispersity on the surface of Ti 4 O 7 and IrO x /Ti 4 O 7 particles are uniformly dispersed on the anode catalytic layer. After the stability test, the Ti 4 O 7 support has little decay, demonstrating a high electrochemical stability. IrO x /Ti 4 O 7 with a high dispersity has a great potential to the application on the reversal tolerance anode of the fuel cell.
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JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 54
·期 6
·4626-4636
·
IF 2.993
Zhang Lei,He Yi,Zhu Lin,Jiao Zhilin,Deng Weizhou,Pu Caiping,Han Chunmei,Tang Shan
Alkyl phosphate modified graphene oxide (GON-DDP) was successfully synthesized using dodecanol, ethanol amine and self-made graphene oxide (GO) as precursors. The structure and morphology of GON-DDP were characterized by FT-IR, XPS, TG/DSC, SEM and TEM. The characterization results indicate that long alkyl phosphate chains were successfully grafted on GO surface, which guaranteed the dispersibility of GON-DDP in hydroisomerization dewax base oil (VHVI8). Then the tribology properties of GON-DDP as friction reduction and anti-wear additive in VHVI8 were evaluated on four-ball machine and SRV test system. The results show that the friction coefficient and wear scar diameter were reduced by 22.7% and 30.3% compared with bare VHVI8 base oil. Moreover, the non-seizure load of VHVI8 was significantly raised by adding GON-DDP. Finally, the lubrication mechanism was proposed according to Raman analysis on the worn surfaces of steel balls.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2017
·Vol. 29
·期 3
·2477-2483
·
IF 2.019
Gao Shuwen,Sui Yanwei,Wei Fuxiang,Qi Jiqiu,Meng Qingkun,He Yezeng
Ni-MOF derivatives are fabricated through calcining in air at different temperatures without leading to original structure collapsing. The results indicate that the obtained NiO has fine electrochemical performance at the calcining temperature of 350 °C, which possesses a reversible specific capacitance of 485 F g −1 at the current of 1 A g −1 , and nearly 87% retention after 5000 cycles. The superior electrochemical properties of Ni-MOF derived hexagonal flaky NiO is attributed to the enlarged surfaces and stable structure after calcination.
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