JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
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2025
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IF 3
Yusheng Jiang,Xingyu Liu,Teng Li,Hankun Zhang,Lingtao Zeng,Yundi Geng,Hongwei Wu,Changjiang Liu,Hongchao Li,Ding Wang,Yan Li,Chuncheng Yang
Fe-based amorphous alloys have garnered significant attention as high-efficiency Fenton-like catalysts for wastewater treatment due to their unique disordered atomic structure and abundant active sites. However, challenges remain in achieving both ultra-fast degradation kinetics and facile catalyst recovery. In this study, magnetically recoverable Fe-Si-B amorphous nanoparticle catalysts were successfully prepared by the chemical reduction method, and Rhodamine B degradation experiments were carried out under a Fenton-like system. The structural, morphological, compositional, thermal, and magnetic properties of the Fe-Si-B nanoparticles were characterized before and after the catalytic reaction. The results demonstrated that the nanoparticles retained their amorphous structure after the catalytic reaction and exhibited excellent soft magnetic properties with a saturation magnetization of 94.41 emu/g. Under conditions of 5 mM H 2 O 2 , 70 °C temperature, and pH = 3, the catalyst achieved over 99 % degradation efficiency for 20 mg/L Rhodamine B within 2 min at a dosage of only 10 mg/L. The degradation process followed a pseudo-first-order kinetic model with an activation energy as low as 37.62 kJ/mol. Radical quenching experiments indicated that ·OH played a dominant role in the degradation reaction, and the synergistic effect between the amorphous structure and high-density active sites significantly enhanced the generation efficiency of ·OH, thereby improving catalytic performance.
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DOI
高影响因子
E-POLYMERS
·
2021
·Vol. 21
·期 1
·179-185
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IF 2.025
Ya-Dong Yang,Gui-Xiang Liu,Yan-Chan Wei,Shuangquan Liao,Ming-Chao Luo
Low strength has always been one of the main factors limiting the application of foams. We acquire a natural rubber latex/MXene foam composite with high strength and versatility by adding MXene to the natural rubber latex. It is shown that natural rubber latex foam (NRF) with 2 and 3 phr of MXene shows obviously enhanced tensile strength by 171% and 157% separately as compared to that of neat NRF. Furthermore, the composite also has better electrical conductivity and electromagnetic shielding than NRF, which can be used in the automotive industry, aviation industry, and many other aspects.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Shenbo Huang,Zirong Luo,Jizhen Zhang,Na Kong,Jihua Li,Pengfei Zhao,Jiayu Wu,Shaozao Tan,Jinlong Tao
Concentrated natural rubber latex (CNRL), prized for its exceptional molding performance, high elasticity and strength, is indispensable in various latex products. Currently, commercial CNRL production mainly relies on the centrifugation of fresh natural rubber latex (FNRL), facing challenges such as complexity, lower yield and environmental pollution. In this study, an absorption concentration method based on superabsorbent polymer (SAP) beads was developed for fabricating CNRL to overcome these limitations, without using complex equipment. The concentration process is more environmentally friendly and is applicable to the concentration of various synthetic rubber latexes. The CNRL prepared through this method can achieve a total solid content of up to 70 % and exhibits excellent storage stability. Furthermore, the substantial non-rubber components in CNRL markedly improve the mechanical attributes of the resulting products, including rubber films and latex products. The absorption mechanism of SAP beads on non-rubber components has been subjected to comprehensive analysis, thereby providing substantial theoretical support for the comprehension of this process. This work not only successfully identifies a highly promising method for natural rubber latex concentration but also establishes a robust theoretical foundation for subsequent process optimization.
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高影响因子
Polymer-Plastics Technology and Materials
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2024
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IF 2.6
Lu Guo,Shiwei Wang,Weizhen Xie,Xuan Wu,Bo Zhao,Man Liu,Chaolu Yin,Qian Li
In order to improve the thermal insulation and smoking properties of expanded vermiculite matrix composites, a kind of expanded vermiculite (EV)/chitosan (CS) composites was prepared by hot pressing. The effects of CS on smoke density, fire-resistance, insulation, and mechanical properties of the EV/CS composites were studied. The results show that with the increase of CS content, the smoke absorption performance and energy storage modulus of the composites is improved. Thermogravimetric (TG) analysis shows that the thermal stability of the EV/CS composite is improved by the presence of chitosan. The pores appear on the surface of the composites after the single-side fire-resistance test. After that, the thermal conductivity of the composites gradually decreases and the insulation performance is improved as the CS content increases. The CS carbonized during the preparation of the composites and thermal decomposition during the test. The morphology results show phase separation of the composites, and the porosity of the composites increases after the test. The reticular structure formed between the EV particles, sodium silicate, and CS molecules reduces the strength loss of the composites.
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DOI
高影响因子
ADVANCED POWDER TECHNOLOGY
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2024
·
IF 4.2
Shiman Zhu,Liuyi Ren,Shenxu Bao,Yimin Zhang,Bo Chen
The flotation separation of fine minerals, including rutile, has long been a challenging research focus. This study selected rutile and garnet samples with size fractions of −15, −38, and −74 μm to investigate the impact of particle size on flotation separation. Infrared spectroscopy, Zeta potential analysis, adsorption capacity measurements, and high-speed camera were utilized to analyze the mechanism. Results indicate that a high-grade concentrate with recovery of 92.33 % was achieved by mixing −74 μm rutile and −15 μm garnet in a 1:1 ratio. Benzohydroxamic acid (BHA) collector primarily chemisorbs onto the surface of rutile particles. BHA's adsorption capacity on each particle size's rutile surface is significantly higher than that of garnet. Meanwhile, sodium fluorosilicate (SSF) exhibits the strongest inhibitory effect on −15 μm garnet particles. Additionally, adhesion between bubbles and −74 μm rutile is much stronger than that between bubbles and fine particles overall. These findings have significant reference value for improving eclogite-type rutile ore's fine particle separation.
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高影响因子
POLYMER ENGINEERING AND SCIENCE
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2024
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IF 3.2
Xiaoye Li,Huamin Liu,Yuanyuan Xue,Yanchao Zhu,Juntao Li,Xinyao Li,Shuang Gao
Reinforcing fillers play a pivotal role in achieving superior performance of latex foam materials. The corn stalk, as an agricultural by-product, possesses the advantages of abundant availability, renewability, and environmental friendliness. In this study, natural rubber latex foam (NRLF) was prepared using the Dunlop method with the addition of corn stalk (CS) as a reinforcing agent. To further enhance the adhesion between the biomass fiber and matrix, alkali-treated CS/natural rubber latex foam (ACS/ NRLF) was prepared by modifying the CS with a 6% sodium hydroxide solution. The effects of different amounts of CS and ACS on the properties of the composites were investigated. The results demonstrate that loading 5phr of ACS significantly improves mechanical properties such as tensile strength, compressive capacity, recovery rate, and other properties in ACS/NRLF materials. Furthermore, surface treatment of the fiber is shown to greatly enhance material performance. This indicates that CS has great potential in the application of latex foam materials.
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高影响因子
危险品化学品经营许可证（带存储）