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.
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DOI
高影响因子
IONICS
·
2026
·
IF 3.4
Zhang Shiyu,Huang Zhen,Fan Hui,Zhang Dandan,Li Zhongyong,Yuan Songdong
LiMn x Fe 1−x PO 4 (LMFP) has emerged as a promising next-generation cathode material for lithium-ion batteries (LIBs), characterized by its high energy density and exceptional thermal stability. However, its intrinsically poor electronic conductivity and Jahn-Teller effect induced by Mn 3+ severely limit rate capability and cycle life. Unlike previously reported LMFP/N-doped carbon systems, herein an in situ defect-rich nitrogen-doped carbon coating is constructed on LiMn 0.5 Fe 0.5 PO 4 (LMFP/C-xN) via a high-temperature solid-state method using PVP as the bifunctional dispersant and carbon/nitrogen source. An optimal PVP dosage of 10 wt% effectively refined the particle size and improved morphological uniformity. Characterization and electrochemical tests revealed that nitrogen doping of the carbon coating introduces abundant defect sites, enhancing electronic conductivity and Li + diffusion kinetics, while the PVP-derived carbonization partially reduces Mn 3+ to mitigate Jahn-Teller distortion. LMFP/C-10N delivered a high discharge capacity of 164.9 mAh g − 1 at 0.1 C and retained 94.5% capacity after 300 cycles at 4 C. This work provides a facile PVP-assisted strategy for high-performance long-life LMFP cathodes, outperforming most previously reported LMFP/N-doped carbon cathodes.
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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.
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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.
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高影响因子
Journal of Sustainable Metallurgy
·
2026
·
IF 3.5
Zhong Xinlong,Zhang Zhijun
During the production of alumina from low-grade bauxite via the sintering process, gallium (Ga) is simultaneously transferred into the leach liquor. The ion exchange and solvent extraction were employed to evaluate the selective separation of Ga from bauxite sintering leach liquor. The separation of Ga and aluminum (Al) from bauxite sintering leach liquor was investigated using SEPLITE ® LSC-600 special chelating resin (Sunresin New Materials Co., Ltd., Xi’an, China) as the adsorbent and a trioctylmethylammonium chloride (N263)-based organic solvent as the extractant. For the LSC-600 resin, an adsorption efficiency of 79.70% and a distribution coefficient of 31.42 mL/g for Ga were achieved at a solid-to-liquid (S/L) ratio of 2.5/20 with a contact time of 30 min. In comparison, the N263 organic solvent yielded a Ga extraction efficiency of 89.23% and a distribution coefficient of 82.89 at an organic-to-aqueous (O/A) ratio of 2/20 and a contact time of 15 min. Although N263 outperformed the LSC-600 resin in terms of extraction performance, the subsequent stripping process using hydrochloric acid (HCl) proved to be relatively challenging. This work demonstrates that N263 serves as a highly effective extractant for selective gallium recovery from alkaline leach liquor, providing a new approach for the comprehensive utilization of low-grade bauxite. Graphical
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Zeng Fanen,Xu Bing,Jing Chenglong,He Xiaodong,Li Chunyang,Li Guojun
High-entropy oxides (HEOs) have attracted considerable attention for energy storage applications because of their multi-principal synergistic effects and excellent structural stability. In this study, polyethylene glycol (PEG) was used as a surfactant to synthesize (CrMnFeCoNi) 3 O 4 HEOs by tuning the molar ratio of PEG to metal cations ( P / M ). The results show that PEG plays three roles during synthesis, serving simultaneously as a coordinating dispersant, a structure-directing agent, and an in situ porogen. The optimized HEO ( P / M = 4/5) exhibits a uniform nanoparticle morphology and a well-developed pore architecture, delivering a specific capacitance of 557.6 F g –1 . Kinetic analysis further indicates that its pseudocapacitive behavior is from a cooperative effect involving both capacitive-controlled and diffusion-dominated mechanisms. The assembled asymmetric supercapacitor device achieves an energy density of 64.2 Wh kg –1 at a power density of 375.3 W kg –1 and retains 81.3% of its capacitance after 10000 charge/discharge cycles. These outstanding electrochemical properties highlight the promise of PEG template (CrMnFeCoNi) 3 O 4 HEOs for advanced energy storage applications. Graphical abstract
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DOI
高影响因子
CELLULOSE
·
2026
·
IF 4.6
Guo Aofei,Geng Youqian,Feng Hu,Gao Danying,Ma Haowei,Sun Zhihui,Yu Zhenyun
Cement-based materials with low water-to-cement ratio, represented by high-performance concrete (HPC) and ultra-high-performance concrete (UHPC), exhibit excellent mechanical properties and durability. However, they suffer from issues such as insufficient and nonuniform cement hydration and severe autogenous shrinkage. In this study, Polyethylene glycol (PEG, 1500 g/mol) was grafted onto cellulose nanocrystals (CNCs) to synthesize PEGylated CNCs (PCNCs), aiming to solve the above issues through mechanisms such as short-circuit diffusion, steric hindrance, and internal curing. FTIR and NMR confirmed successful grafting. PCNCs exhibited increased crystallinity (70.21% to 72.59%) compared to CNCs, suggesting enhanced structural stability. TGA revealed higher thermal stability: onset decomposition temperature rose from 204 °C (CNCs) to 234 °C (PCNCs), with maximum mass loss at 303 °C (compared with CNCs: 280 °C). The absolute value of zeta potential of PCNCs is 13.3 mV ± 0.9 mV, with the proportion of aggregated particles (> 170 nm) reduced from 45.22 ± 2.5% (CNCs) to 4.53 ± 0.8%, indicating excellent colloidal stability and dispersibility in aqueous phases. TEM results further revealed that PCNCs are less prone to aggregation through synergistic electrostatic repulsion and steric hindrance. This study establishes a solid foundation for the future application of PCNCs in cement-based materials with low water-to-cement ratio.
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DOI
高影响因子
Nature Communications
·
2026
·
IF 18.1
Wang Meidi,Zhou Guan-Zheng,Zhou Zhiwei,Shao Lu,Shu Chang,Ma Tian-Yu,Wu Xue-Qian,Li Dong-Sheng
The rapid advancement of reticular chemistry has enabled the synthesis of thousands of covalent organic framework (COF) powders bearing various structures and functions. Nevertheless, processing these COF powders into application-ready membranes with precise separation capacity remains a formidable challenge. Herein, a dynamic covalent chemistry-based dual-drive strategy is harnessed to drive macroscopic structural variation, achieving the transformation of powdered COFs into defect-free COF membranes. This powder-to-membrane transformation is enabled by the internal factor of framework reconstruction and the external driving force of acid attack, showcasing high processibility, which affords scalable two-dimensional (2D) and three-dimensional (3D) COF membranes with a maximum area of 225 cm 2 . The optimum TpPa membrane demonstrates excellent performance in molecular sieving, displaying high rejections towards dye (99%) and pharmaceutical molecules (98%) and a pure water permeance of 179.0 L m −2 h −1 bar −1 . Moreover, our dual-drive transformation outperforms conventional methods in fabrication efficiency, conversion ratio, separation performance, etc., offering a green, efficient, versatile, and scalable strategy for the preparation and application of COF membranes in chemical engineering separations.
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Wang Xubei,Gong Lei,Chen Haixia,Qin Zicheng,Hu Chuan,Wang Tao,Hu Feng
Electrocatalytic CO 2 reduction reaction (eCO 2 RR) to formic acid (HCOOH) provides an economical solution for the utilization of renewable electricity and addressing climate challenges. However, the catalytic activity is limited by an inappropriate hydrogenation process and competitive hydrogen (H 2 ) evolution. Herein, we prepared palladium (Pd) nanoparticle-decorated mesoporous Cu 2 Se nanoribbons catalyst (Cu 2 Se-Pd). Pd nanoparticles induce charge transfer from Cu to Se, while promoting the hydrogenation of intermediates and suppressing the evolution of H 2 . Experimental results show that the optimal Cu 2 Se-Pd catalyst achieves a HCOOH Faradaic efficiency (FE) of 61.85% at a potential of − 0.9 V versus reversible hydrogen electrode (vs. RHE) in a flow cell. Cu 2 Se-Pd achieves a HCOOH partial current density of − 129.78 mA cm −2 at − 1.1 V vs. RHE, and operates stably for about 15 h at a constant current of − 100 mA cm −2 . To further couple the eCO 2 RR with energy storage, a Li–CO 2 battery device was assembled using Cu 2 Se-Pd as the cathode material. Battery performance tests show that the Li–CO 2 battery assembled with Cu 2 Se-Pd can stably charge and discharge for over 250 h at a current density of 100 mA g −1 . This work provides experimental insights into promoting eCO 2 RR to HCOOH through hydrogenation regulation.
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高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 10
·6014-6027
·
IF 10.7
Panpan Li,Jingde Luan,Longde Jiang,Yu Zhang,Wengang Liu,Zheng Yan,Xin Ke
High pressure wet ball milling and thermal polycondensation are used to prepare W-doped O-bridge carbon nitride (WOCN) for the rapid catalytic degradation of antibiotic rifampicin (RIF). The removal of rifampicin at a concentration of 150 mg L−1 in a dark environment reached 60% within 8 minutes and 92% after 40 minutes of visible light exposure. The rapid catalytic degradation of RIF benefits from the coupling effect of dark degradation with photocatalytic degradation, including the electron replenishment theory of dark degradation and the electrophilic attack under light irradiation. In the dark degradation reaction, the abundant delocalized electrons at the tungsten-oxygen insertion surface are captured by the dissolved oxygen to produce ˙O2−, part of which directly participates in RIF degradation, whereas the other part is oxidized to 1O2 by the holes at the carbon-rich cyano group surface and then participated in RIF degradation. The electrons consumed at the reaction site are continuously replenished through the O electron bridge, allowing RIF degradation to continue. In the photocatalytic degradation reaction, photogenerated electron holes are excited using visible light, which partly participate in the degradation of RIF through the above dark reaction pathway. Meanwhile, some photogenerated holes oxidize OH− to ˙OH and degrade RIF by electrophilic attack.
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产品关联
DOI
高影响因子
European Physical Journal-Special Topics
·
2025
·
IF 2.3
Guo Ping,Zhou Yingqiang,Cao Wenjie,Wang Xinyin,Wang Tian,Su Hongxiang,Cheng Lin,Wu Huaping,Li Long,Liu Aiping
Hydrogel-based actuators have shown great potential in the field of biomimetic soft robots due to their excellent flexibility and tunable mechanical properties. Despite considerable research efforts aimed at advancing hydrogel-based actuator technology, these actuators have not yet fully replicated the ``recognition-judgment-execution" cycle characteristic of conscious, intelligent organisms, primarily due to the absence of integrated sensing mechanisms. To address this gap and mimic the intelligent actuation patterns of conscious organisms, we have developed an attractive soft actuator that combines substantial contraction capability with sensing functionality. This actuator innovatively integrates piezoresistive strain sensing and photo/thermal actuation functions within a single hydrogel material including gelatin, polyvinyl alcohol and MXene (GPM), enabling remote near-infrared (NIR) light-triggered actuation control. We propose a method of storing and releasing elastic potential energy, which can generate a high contraction force of up to 600 kPa, effectively overcoming the limitations of traditional osmosis-based actuation mechanisms in hydrogels. Moreover, the shape changes during actuation trigger the migration of MXene and significant alterations in the conductive network, endowing the GPM hydrogel with a wide sensing range (1–200% tensile strain), fast response time (191 ms), and excellent output signal linearity. Consequently, the actuator acquires self-sensing capabilities to monitor its deformation state in real time. Ultimately, inspired by the biological characteristics of snails, we designed an intelligent adaptive actuator capable of actively senseing external environmental stimuli and consciously adjusting its shape change accordingly. This integrated sensing-actuation hydrogel provides crucial insights and theoretical support for advancing artificial intelligence soft robots with higher autonomy and complexity.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）