JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 2
·78
·
IF 2.8
Wang J. M. Z.,Shu M. F.,Li S. M.,Pan C. B.,Tao M.,Yin L. H.,Song W. H.,Zhu X. B.,Yang J.,Sun Y. P.
BiFe 0.93 Mn 0.07 O 3 -0.82BiFe 0.975 Ti 0.025 O 3 -0.18CaTiO 3 thin films were prepared on Pt/Si substrate by chemical solution deposition. The microstructure, ferroelectric and piezoelectric properties of the composite films under different annealing temperature were studied systematically. The thin film annealed at 500 °C possesses the maximum remanent polarization and piezoelectric coefficient of 112.6 µC/cm 2 and 878.2 pm/V, respectively, which is comparable to most of BiFeO 3 -based orientated films. The results can be ascribed to the dense and uniform grain distribution in the surface morphology, and coexistence of rhombohedral twisted perovskite symmetrical structure ( R3c space group) and pseudo-cubic structural phase. This work provides a feasible way to prepare high-quality lead-free composite ferroelectric films at low-cost.
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 14
·1163
·
IF 2.8
Liu Feng,Yu He,Fu Jian,Zhang Xiaowei
We investigate the thermoelectric performance and the stability of polycrystalline p -type Cu 2− x S fabricated by hydrothermal method and hot-pressing technique. The relative pure copper sulfides are obtained via the sintering process and their crystal structures are dependence on the atomic ratio of Cu/S. The thermoelectric performance tests show a good figure of merit of ZT = 0.78 at 550 °C. In addition, we repeated measured the thermoelectric parameters to confirm the stability of the samples. The electrical conductivity and the Seebeck coefficient have dramatically change between the different tests, which originate from the variation of carrier concentration and mobility. Nonetheless, the figure of merit ZT maintains unchanged, indicating that the samples synthesized in this work possess quite stable thermoelectric performance.
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DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2022
·Vol. 24
·期 3
·69
·
IF 2.533
Song Rong,Li Ying,Qian Jun
Perovskite has shown attractive optoelectronic performances and is a potential material in lighting, anti-counterfeiting, sensor, and other optoelectronic devices. Recently, spin-coating has been widely used in fabricating high-performance perovskite films, but it is difficult to process and apply in practice. In this paper, the CsPbBr 3 /Cs 4 PbBr 6 composite perovskite quantum dots with photoluminescence quantum yield of 36% and high storage stability were prepared by using room temperature ligand-assisted precipitation method and controlling the proportion of CsBr/PbBr 2 . In addition, the composite perovskite was ground and dispersed in the inks system. After adjusting the composition and ratio of the resin components, the inks were suitable for screen printing with a viscosity of 2439 mPa•s, an initial dryness of 25 mm/30 s, and a thorough dryness of 100 s/100 μm. By printing, the perovskite films exhibited high coverage, strong green emission, and outstanding fluorescence recovery ability after exposure to water. Screen printing perovskite inks have the characteristic of being patternable, which provides a solution for preparing a perovskite film in the application.
研究领域:
材料科学
·
纳米科技
·
光电子学
·
印刷电子
·
荧光材料
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 36
·16909-16917
·
IF 3.5
Xie Jingru,Fu Zhifen,Cheng Qing,Chen Chen,She Yubin,Li Xiangyi
Low temperature co-fired ceramics (LTCC) technology is extensively utilized to meet the requirements of device integration and miniaturization. Low-fired Li 3 Mg 2 NbO 6 ceramics doped with x wt% Li 2 O–MgO–B 2 O 3 –CaF 2 –SiO 2 glass (LMBCS, x = 0.5, 1.0, 1.5, 2.0) were prepared by the solid-state reaction method for applications in microwave communication materials. All samples exhibited a single-phase Li 3 Mg 2 NbO 6 structure. The addition of LMBCS glass effectively reduced the sintering temperature of Li 3 Mg 2 NbO 6 ceramics from 1250 °C to 875 °C. And adding LMBCS glass improved the Q × f value of Li 3 Mg 2 NbO 6 ceramics. The Li 3 Mg 2 NbO 6 -1.0wt% LMBCS ceramics exhibited outstanding microwave dielectric properties: ε r = 16.8, Q × f = 89,495 GHz, τ f = − 27.4 ppm/°C at 875 °C, which indicates that this ceramic is potential candidate materials for LTCC.
研究领域:
材料科学
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电子陶瓷
·
功能材料
·
无机非金属材料
·
微波通信材料
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DOI
高影响因子
JOURNAL OF ASSISTED REPRODUCTION AND GENETICS
·
2023
·Vol. 40
·期 2
·417-427
·
IF 3.1
Wei Chaofeng,Xiang Shan,Liu Danqi,Wang Chenggang,Liang Xiaoyu,Wu Haicui,Lian Fang
Introduction Laser-assisted hatching (LAH) is a commonly used adjunct technique; however, its effectiveness has not been fully established. Objective We evaluated the effects of LAH on pregnancy outcomes in frozen-thawed embryo transfer (FET) cycles of cleavage-stage embryos. Materials and methods This retrospective study involved 5779 FET cycles performed at the Reproductive and Genetic Center in the Affiliated Hospital of Shandong University of Traditional Chinese Medicine between January 2016 and December 2020. After propensity score matching, 3535 FET cycles were included, out of which 1238 were subjected to LAH while the remaining 2297 cycles were non-LAH (NLAH). The primary outcomes were clinical pregnancy rate (CPR) and live birth rate (LBR) while secondary outcomes included implantation rate (IR), biochemical pregnancy rate (BPR), ectopic pregnancy rate (EPR), pregnancy loss rate (PLR), multiple pregnancy rate (MPL), and monozygotic twinning rate (MTR). Logistic regression analysis was conducted to adjust for possible confounders. Subgroup analysis was also performed based on the endometrial preparation regimen. Results The LAH group exhibited a higher LBR, compared to the NLAH group (34.9% vs. 31.4%, OR = 1.185, 95% CI = 1.023, 1.374, P = 0.024). Additionally, the LAH group showed a decreasing trend in PLR and EPR; however, differences were insignificant ( P = 0.078, P = 0.063 respectively). Differences in IR (24.6% vs. 24.3%), BPR (41.8% vs. 40.4%), CPR (40.7% vs. 38.3%), MPR (14.1% vs. 17.3%), and MTR (1.4% vs. 1.1%) were insignificant. Subgroup analysis revealed that LAH may be more conducive for pregnancy outcomes in hormone replacement cycles. Conclusions In summary, LAH has an increased chance of achieving live births. However, further prospective studies should be performed to confirm our findings.
研究领域:
生殖医学
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辅助生殖技术
·
胚胎学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 8
·716
·
IF 2.8
Wu Yuhan,Duan Guofan
We report the fabricating of BiFeO 3 (BFO) and Mn-doped BFO is prepared by the commonly used sol–gel method and obtained various excellent properties. X-ray diffraction patterns present that BFO is a pure phase and no impurities are detected and demonstrated that Mn is successfully doped into the BFO crystal structure. X-ray photoelectron spectroscopy analysis suggested that the extent of Mn doping in the samples and check the enhancement of Fe 3+ ions concentration in the nanoparticles. The results of scanning electron microscopy and transmission electron microscope indicated that the morphology and size of the nanoparticles with different Mn doping concentrations. The BFO nanoparticles exhibit weak ferromagnetic nature at general ambient temperature. However, the ratio of Mn ions to Fe ions changes to some extent, and the ferromagnetic behavior also changes, which is mainly due to the collapse of spin cycloid structure and the enhancement of super-exchange interaction between Fe–O–Fe, it can be inferred that Mn-doping has significant importance in increasing the ferromagnetic properties of BFO-based nanoparticles. The photocatalytic performance of Mn-doped BFO nanoparticles has also been further studied, which confirms the potential application value of Mn-doped BiFeO 3 in the field of photocatalysis.
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DOI
高影响因子
CELLULOSE
·
2021
·Vol. 28
·期 13
·8671-8691
·
IF 5.044
Zhao Ningning,Ma Haixia,Yao Ergang,Yu Zhong,An Ting,Zhao Fengqi,Yu Xiaojiao
Al/CuO nanothermites have displayed unique catalytic activities in accelerating the thermolysis of nitrocellulose (NC) and combustion characteristics of AP/HTPB propellant depending on the morphology of CuO. The kinetic triplet of NC-based composites was determined by multi- isoconversional methods, whereas the reaction models were reconstructed by employing a modified Šesták–Berggren equation based on the combined kinetic analysis. DSC and TG-FTIR results revealed that CuO and Al/CuO play crucial roles in accelerating the dissociation of –O–NO 2 bond and the coacervate phase to change the pyrolysis mechanism of NC from an autocatalytic reaction to a modified n -th order reaction model. It was also demonstrated that nanothermites were provided with a low starting temperature of pyrolysis, reduced exothermic peak temperature, low activation energy, and high total weight loss, confirming their better catalytic activity than their corresponding CuO, of which Al/CuO nanothermite, containing the gypsophila paniculata-like CuO, performs the best. Further, the shape of CuO was found to be significant in enhancing the burning rate of AP/HTPB propellant containing thermites, with the gypsophila paniculata-like presenting the best catalytic effect (43% improvement). Hence, introducing well-defined nanostructures is a promising way to improve the pyrolysis and combustion of energetic materials.
研究领域:
含能材料
·
推进剂化学
·
纳米催化
·
热分析
·
燃烧科学
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 30
·期 13
·36807-36823
·
IF 5.19
Yao Chuqing,Dai Yaodong,Chang Shuquan,Zhang Haiqian
In this work, novel Prussian blue tetragonal nanorods were prepared by template-free solvothermal methods to remove radionuclide Cs and Sr. The as-prepared Prussian blue nanorods were identified and characterized by scanning electron microscopy, transmission electron microscope, Fourier transform infrared spectroscopic, thermogravimetric analysis, zeta potential, and surface analysis, and its sorption performance was tested by batch experiments. Our results suggest that Prussian blue nanorods exhibited better adsorption performance than co-precipitation PB or Prussian blue analogue composites. Thermodynamic analysis implied that the adsorption process was spontaneous and endothermic which was described well with the Langmuir isotherm and pseudo-second-order equation. The maximum adsorption capacity of PB nanorod was estimated to be 194.26 mg g −1 and 256.62 mg g −1 for Cs + and Sr 2+ (adsorbate concentration at 500 mg L −1 , the temperature at 298 k, pH at 7.0). Moreover, the experimental results showed that the Prussian blue nanorods have high crystallinity, few crystal defects, and good stability under alkaline conditions. The adsorption mechanism of Cs + and Sr 2+ was studied by X-ray photoelectron spectroscopy, X-ray diffraction, and 57 Fe Mössbauer spectroscopy. The results revealed that Cs + entered the PB crystal to generate a new phase, and most of Sr 2+ was trapped in the internal crystal and the other exchanged Fe 2+ . Furthermore, the effect of co-existing ions and pH on PB adsorption process was also investigated. The results suggest that PB nanorods were an outstanding candidate for removing Cs + and Sr 2+ from radioactive wastewater.
研究领域:
环境科学
·
放射化学
·
纳米材料
·
废水处理
·
吸附技术
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DOI
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2024
·Vol. 33
·期 2
·885-898
·
IF 4.7
Xiao Huan,Zhou Minghao,Sun Fengkun,Song Xincheng,Huang An
Polylactic acid (PLA) is a widely used biodegradable polymer, but its brittleness severely limits its further application. This study explores the preparation of anisotropic polylactic acid/thermoplastic polyurethane (PLA/TPU) foam through melt blending with elastomers, rolling, and supercritical fluid foaming (SCF), which substantially enhances the toughness of PLA. Results indicate that the crystallinity and elongation at break of PLA/TPU blend improve with increasing rolling temperature and rolling rate. Notably, at a rolling temperature and a rolling rate of 50%, the elongation at break for the PLA/TPU blends increases from 4.0 to 59.0%. In addition, SCF processing yields an anisotropic, highly oriented, and elongated cell structure within PLA/TPU foam. This cellular architecture further elevates the elongation at break of the rolled PLA/TPU blend to 76.8% and 1820.0%. This research offers a straightforward, environmentally friendly, and scalable method for fabricating high-strength PLA-based foam materials, equipping them with functionalities such as buffering, sound absorption, shock absorption, heat preservation, etc., which is suitable for electronics, home appliances, sports and other fields.
研究领域:
材料科学
·
高分子科学
·
泡沫材料工程
·
绿色材料
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聚合物力学性能
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DOI
高影响因子
IONICS
·
2021
·Vol. 27
·期 2
·889-896
·
IF 2.817
Ren Siyun,Wang Fang,Wang Pei,Wang Pengfei,Song Xiaoying,Huang Yi,Chio U-Fat,Wang Wei
Two modified products of Na 2 Li 2 Ti 6 O 14 were prepared via O-site replacement by F − and Cl − doping and employed to store lithium during cycles. Through tests of structure and electrochemical properties, it seems that substituting part of the O-site for low-valent ions enables better ionic and electronic conductivities of pristine Na 2 Li 2 Ti 6 O 14 . As a consequence, the modified products exhibit preferable electrochemical performance when compared with the pristine one, especially for the Na 2 Li 2 Ti 6 O 13.7 F 0.3 , which displays the best reversible charge specific capacity of 121.20 mAh g −1 and the battery was tested at 100 mA g −1 . Moreover, in situ XRD results explain that the great reversibility of structure is significant to the excellent lithium storage property of Na 2 Li 2 Ti 6 O 13.7 F 0.3 for the rechargeable lithium-ion batteries. Graphical abstract
研究领域:
材料科学
·
电化学
·
储能
·
锂离子电池
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 33
·2187
·
IF 2.8
Liao Bo-Kai,Zhou Zong-Yi,Luo Zhi-Gang,Wu De-Quan
In this work, the corrosion behavior of Sn-3.0Ag-0.5Cu (SAC305) tin-based solder alloy at relatively lower temperature is firstly investigated using electrochemical methods. Effects of temperature and sodium chloride (NaCl) concentration on the corrosion behavior are discussed in detail. Results indicate that the anti-corrosion ability decreased when temperature rising at the same NaCl concentration. On the other hand, the corrosion resistance of SAC305 alloy increased with a lager chloride concentration at relatively lower temperatures, whereas the opposite conclusion was reached at high temperatures. X-ray diffraction meter (XRD) and scanning electron micrograph (SEM) studies revealed that at low temperature, chloride ion reacted with SAC305 alloy forming insoluble basic tin chloride with tin alloy, which covered on metal surface and inhibited corrosion process. However, this process is disrupted at relatively higher temperatures due to chloride ions attacked the tin-oxide protective film on the metal surface, further promoting pitting corrosion. Relevant mechanism has been proposed to clarify the roles of temperature and NaCl concentration in the corrosion process for SAC305 alloy in NaCl solution.
研究领域:
材料科学
·
腐蚀工程
·
电化学
·
电子材料
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DOI
高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 2
·98
·
IF 5.3
Cui Mingyu,Shi Yuqing,Xin Jianwei,Zhang Yuqi,Wang Ji-Jiang
A Cu 2+ -coordination crosslinked two-dimensional photonic crystal hydrogel (PN-2DPCH-Cu 2+ ) was constructed, in which a polystyrene two-dimensional photonic crystal (PS-2DPC) was embedded in a Cu 2+ -crosslinked poly(acrylamide˗ co ˗acrylic acid˗ co ₋N-vinyl imidazole) hydrogel network. The introduction of Cu 2+ ions was mainly based on the coordination reaction of Cu 2+ and N atoms of the imidazole rings on the hydrogel chains. The constructed PN-2DPCH-Cu 2+ smart photonic hydrogel sensor achieved highly sensitive and simple detection of histidine (His) just using a laser pointer and a ruler. The coordination competition of Cu 2+ to His and N atoms of the imidazole rings drove the hydrogel’s response. In the presence of His, the PN-2DPCH-Cu 2+ sensor swells obviously because the stronger coordination between Cu 2+ ions and histidine compared to imidazole rings removed the coordination-crosslinked Cu 2+ from the hydrogel, thus decreasing its crosslinking density. The swollen hydrogel increased the microsphere spacing of the embedded PS-2DPC, which can be acquired by measuring the Debye diffraction ring diameter of PS-2DPC. The microsphere spacing increments were linearly changed when the His concentrations were in the ranges 0.01–0.03 µM, 0.05–1 µM and 10–500 µM, and the limit of detection was 9.6 nM. The sensor showed high selectivity to His, good anti-interference and stability, and the response can be achieved in 20 min. The good recoveries and relative standard deviations from determining His contents in milk and beverage using our constructed PN-2DPCH-Cu 2+ sensor demonstrated its accuracy and reliability. The coordination competition strategy of driving hydrogel to response can extend to develop other analytes sensitive hydrogel sensors by choosing suitable polymerizable monomers and metal ions. Graphical
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