SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2023
·
IF 6.9
Jie Yu,Yuwei Wang,Cong Qi,Wenjie Zhang
To improve the utilization efficiency of solar energy, Ag@Fe 3 O 4 core-shell nanoparticles with strong light absorption capacity were prepared, and showed good photothermal and photoelectric properties . Synergistic effects of nanoparticle concentration, light intensity and metal foam on photothermal and photoelectric properties were studied. The results showed that the SPR effect of nanoparticles improves the light absorption ability. Compared with deionized water , the addition of nanoparticles can increase the temperature by 6.10% and the power generation efficiency by 18.75%. When the concentration exceeds a certain range, the increase in concentration no longer plays a positive role. The increase of light intensity can increase the voltage and output power by up to 45.28% and 44.78%. However, it will increase the temperature gradient between the surface and the bottom of the nanofluids , increase the heat loss, and lead to a decrease in power generation efficiency . The synergistic effect of nanoparticles and metal foam can better improve the photothermal performance. The addition of metal foam can increase the power generation efficiency by 5.65%.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 11
·1-12
·
IF 2.8
Gao Shengqi,He Qin,Yang Qingshan,Wan Songhan,He Xianru
The NBR/G@Fe 3 O 4 composites with good electromagnetic shielding properties are prepared by solution blending, previously, the “G@Fe 3 O 4 composite particles” were obtained by a simple co-precipitation method. The structures of G@Fe 3 O 4 are characterized by Fourier infrared spectroscopy (FTIR), X-ray diffraction (XRD), Raman spectroscopy (Raman), Scanning electron microscopy (SEM), and the graphene content in the composite particles was analyzed by thermogravimetric analysis (TGA). The electromagnetic shielding performance of NBR composites is tested by microwave vector network analyzer. The results show that the average electromagnetic shielding effectiveness of NBR/G@Fe 3 O 4 composites in X-band (8.2–12.4 GHz) can reach 80.4dB, and when the thickness is only 2.1 mm and the filler content is 15 phr can reach 28.2dB, which shield 96.2% of the energy of incident electromagnetic waves. Due to the introduction of magnetic particle Fe 3 O 4 , the NBR/G@Fe 3 O 4 composites have better shielding performance than NBR/G composites at the same graphene content. The electromagnetic shielding effectiveness of NBR/G@Fe 3 O 4 composites with 9.3 phr of graphene is basically the same as that of NBR/G composites with 12.4 phr of graphene.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Xiaocheng Hu,Guodong Nian,Xueya Liang,Lei Wu,Tenghao Yin,Haotian Lu,Shaoxing Qu,Wei Yang
Magnetic hydrogels have promising applications in flexible electronics, biomedical devices, and soft robotics. However, most existing magnetic hydrogels are fragile and suffer insufficient magnetic response. In this paper, we present a new approach to fabricate a strong, tough, and adhesive magnetic hydrogel with nontoxic polyacrylamide (PAAm) hydrogel as the matrix and the functional additive [3-(trimethoxysilyl)propyl methacrylate coated Fe3O4] as the inclusions. This magnetic hydrogel not only offers a relatively high modulus and toughness compared to the pure hydrogel but also responds to the magnetic field rapidly because of high magnetic particle content (up to 60%, with respect to the total weight of the polymers and water). The hydrogel can be bonded to hydroxyl-rich hard and soft surfaces. Magnetic hydrogel with polydimethylsiloxane (PDMS) coating exhibits excellent underwater performance. The bonding between magnetic hydrogel and PDMS is very stable even under cyclic loading. An artificial muscle and its magnetomechanical coupling performance are demonstrated using this hydrogel. The adhesive tough magnetic hydrogel will open up extensive applications in many fields, such as controlled drug delivery systems, coating of soft devices, and microfluidics. The strategy is applicable to other functional soft materials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Extreme Mechanics Letters
·
2018
·
IF 0
Xin Wang,Bin Han,Run-Pei Yu,Fei-Chen Li,Zhen-Yu Zhao,Qian-Cheng Zhang,Tian Jian Lu
Fe 3 O 4 nanoparticle-infiltrated chromatography paper is prepared using a low-cost blending method. Upon characterizing the basic material properties of the Fe 3 O 4 /paper nanocomposite , beam-, accordion- and star-shaped actuators are constructed using the nanocomposite and the corresponding actuation performance is investigated experimentally. The beam-shaped actuator exhibits a reversible flexural deformation due to low magnetic hysteresis loop of the Fe 3 O 4 /paper nanocomposite, maintaining a stable response after 100 cycles. The accordion-shaped actuator can reach a maximum strain of 100% while the star-shaped actuator can capture a spitball twice heavier than itself.
✓ 已验证
产品关联
DOI
Desalination and Water Treatment
·
2024
·
IF 1
Lichun Fu,Tao Jin,Ruixuan Hu,Yuwei Pan,Yingjie Zhao
In recent years, dye wastewater caused serious effects on environmental ecology and human health. Thus, in the present study, hydroxylamine (HA) was used to improve the Fe 3 O 4 /H 2 O 2 process for removing the typical dye pollutant (tartrazine). Only 2.8% tartrazine could be removed in Fe 3 O 4 /H 2 O 2 system within 60 min at the reaction of 1 g/L Fe 3 O 4 , 1 mM H 2 O 2 , and pH 4 while 97.5% tartrazine could be removed within 20 min after adding 1 mM HA into the Fe 3 O 4 /H 2 O 2 system. Compared with Fe 3 O 4 /H 2 O 2 system, the removal rate for removing tartrazine in Fe 3 O 4 -HA/H 2 O 2 system could enhance more than 100 times. Electron paramagnetic resonance tests (EPR), radical quenching experiments and quantitative determination demonstrated that • OH was the major reactive species for removing tartrazine in Fe 3 O 4 -HA/H 2 O 2 system and • OH produced concentration in Fe 3 O 4 -HA/H 2 O 2 system was also much higher than that in Fe 3 O 4 /H 2 O 2 system. The key factors affecting tartrazine removal in Fe 3 O 4 -HA/H 2 O 2 system were also conducted. The optimal HA dosage, Fe 3 O 4 dosage, and H 2 O 2 dosage was 1 mM, 1 g/L and 1 mM. The optimal initial pH in Fe 3 O 4 -HA/H 2 O 2 system was 3, but compared with Fe 3 O 4 /H 2 O 2 system, the tatrazine removal efficiency could significantly improve under any initial pH condition. Fe 3 O 4 -HA/H 2 O 2 process had strong adaptability to inorganic ions and good applicability to different pollutants. Fe 3 O 4 -HA/H 2 O 2 process also exhibited good recycle ability for tartrazine removal. Overall, Fe 3 O 4 -HA/H 2 O 2 process is an effective and good practical applicability approach for dye wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2011
·
IF 3.068
Jun Zhou,Lijun Wang,Xiuying Qiao,Bernard P. Binks,Kang Sun
Unmodified Fe 3 O 4 nanoparticles do not stabilize Pickering emulsions of a polar oil like butyl butyrate. In order to obtain stable emulsions, the Fe 3 O 4 nanoparticles were modified by either carboxylic acid (RCOOH) or silane coupling agents (RSi(OC 2 H 5 ) 3 ) to increase their hydrophobicity. The influence of such surface modification on the stability of the resultant Pickering emulsions was investigated in detail for both a non-polar oil (dodecane) and butyl butyrate in mixtures with water. The stability of dodecane-in-water emulsions in the presence of carboxylic acid-coated particles decreases as the length of the alkyl group (R) and the coating extent increase. However, such particles are incapable of stabilizing butyl butyrate-water emulsions even when the carboxylic acid length is decreased to two. However, the silane-coated Fe 3 O 4 nanoparticles can stabilize butyl butyrate-in-water emulsions, and they also increase the stability of dodecane-in-water emulsions. Thermal gravimetric analysis indicates that the molar quantity of silane reagent is much higher than that of carboxylic acid on nanoparticle surfaces after modification, raising their hydrophobicity and enabling enhanced stability of the resultant polar oil–water emulsions.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APL Materials
·
2024
·Vol. 12
·期 9
·
IF 5.3
Zhang Mingjie,Li Xiaolei,Lin Han
The quality of life is significantly impacted by bone defects, which calls for the creation of optimum restorative materials with particular qualities. Current repair materials, such as metal alloys, polymer scaffolds, and bone cement, have a number of drawbacks, such as poor fracture toughness, non-degradability, and insufficient osteogenic ability. To address these challenges, we designed a novel magnetic casein/CaCO 3 /Fe 3 O 4 microspheres (CCFM), combining biodegradability, osteoinductivity, osteoconductivity, and osteogenesis properties together. In vitro studies confirmed the outstanding biocompatibility and osteogenic differentiation effects on MC3T3-E1 cells of CCFM, highlighting their potential as a promising bone regeneration platform for clinical applications. As a novel bone repair material with superparamagnetic properties, CCFM not only possess good osteoinductivity, osteoconductivity, and osteogenesis properties but also can remain in the lesion location for a long time under an external magnetic field, representing a significant advancement in the field of bone tissue engineering and offering new possibilities for effective bone defect remediation and patient care.
✓ 已验证
产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2025
·
IF 9
Fangzhou Wang,Ge Song,Mou Zhang,Shunan Zhao,Tuo Wang,Kai Zhao,Xin Wang,Ruiping Liu
Propionate accumulation is common in anaerobic digestion systems, while Fe 3 O 4 nanoparticles (Fe 3 O 4 NPs) show potential in steering direct interspecies electron transfer (DIET) to facilitate methanogenesis from propionate. However, the effect of Fe 3 O 4 NPs in stable microbial communities remains unclear. This study demonstrated that 1.0 g/L Fe 3 O 4 NPs enhanced propionate degradation and methane production by 220 % and 55 % of the propionate-acclimated microbial consortia post-shock loading, as evidenced by batch-test. High propionate concentrations suppressed Geobacter , yet Fe 3 O 4 NPs enabled electron syntrophy between alternative DIET-participants ( Arcobacter , Syntrophobacter ) and methanogens ( Methanothrix , Methanobacterium ) serving as electron conduits. Network analysis further revealed that Fe 3 O 4 NPs activated interactions among potential electroactive microbes, highlighting the potentially ubiquitous presence of electron syntrophy. Even in propionate-stressed microbial communities, such mutualism may be rapidly activated by Fe 3 O 4 NPs, offering a practical solution for mitigating propionate accumulation and enhance digester performance.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CURRENT APPLIED PHYSICS
·
2018
·
IF 2.058
Ling-yan Li,Shuang-lin Li,Yan Shao,Rui Dou,Bo Yin,Ming-bo Yang
In this work, Polyvinylidene Fluoride (PVDF)/polystyrene (PS)/high density polyethylene (HDPE) ternary blends displayed a core-shell structure where HDPE was the core, PS was the shell, and this core-shell system dispersed in PVDF matrix. Here, multiwall carbon nanotubes (MWCNTs) and ferroferric oxide (Fe 3 O 4 ) was incorporated. F-F composites with MWCNTs was in PS shell and Fe 3 O 4 was in PVDF matrix and E-F composites with MWCNTs was in PS shell and Fe 3 O 4 was in HDPE core were fabricated by melt blending. It was indicated that the core-shell morphology between PS and HDPE was well retained with the incorporation of Fe 3 O 4 and MWCNTs. Both the electrical conductivity of F-F and E-F composites were similar without no obvious change with the incorporation of Fe 3 O 4 . Composites with greater than 20 dB shielding effectiveness were easy to obtain. The highest SE we observed was for the F-F composite with 1 vol% Fe 3 O 4 and 1 vol% MWCNTs was 25 dB at 9.5 GHz, and the SE was over 20 dB in the whole measured frequency(X-band). The E-F composites with SE greater than 20 dB in X-band was at 2 vol% Fe 3 O 4 and 1 vol% MWNCTs. Such effective and lightweight nanocomposites were obtained, resulting from the synergetic effect of MWCNTs and Fe 3 O 4 nanoparticles .
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2019
·Vol. 19
·期 4
·2211-2218
·
IF 1.093
Tao Cai-Hong,Chen Tiandi,Ma Fusheng,Liu Hui,Li Xiuqi,Lin Shenghong
The submicron-sized Fe3O4 particles were synthesized by solvothermal method. Then polydopamine (PDA) was used to modify the surface of Fe3O4 particles. And then the core—shell Fe3O4@PDA@BSA (single layer and multilayer)
microspheres were prepared by the layer by layer self-assembly method (SAM). In addition, Ag nanospheres were grafted onto the surface of Fe3O4@PDA particles to obtain Fe3O4@PDA-Ag core—shell nanoparticles using silver mirror reaction. The
morphology and component of the obtained core—shell particles were characterized by transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The biocompatibility of the microspheres was researched in vitro by MTT method and its magnetic properties were
also evaluated. The results showed that the microsphere has excellent magnetic properties and good biological safety. Then the catalytic performance of Fe3O4@PDA-Ag microspheres for methylene blue (MB) was studied. And the antimicrobial properties of Fe3O4@PDA-Ag
microspheres for Escherichia coli and Bacillus subtilis were also be discussed. The results indicated good catalytic properties and antibacterial properties.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
·
2011
·
IF 1.304
Huirui Zhou,Ke Tao,Yunqi Sui,Kang Sun
The heterogeneous nucleation and growth of CdSe domains on the Fe 3 O 4 seed nanocrystals are hard to be controlled because of significant lattice mismatch between Fe 3 O 4 and CdSe nanocrystals. Current study exploits the choice of surface ligand and crystal morphology for Fe 3 O 4 seed to investigate ways to overcome the energy barrier imposed by the lattice mismatch for the promotion and control of subsequent growth of CdSe nanocrystals on seeded crystals. Results indicate that the growth of CdSe domains on seed nanocrystals not only depends on the affinity of ligands toward seed nanocrystals, but also is affected by the seed ligands in a similar way to synthesizing individual second-domain nanocrystals. Furthermore, preferential growth of CdSe domains on the corner of cubic seeds are observed, and cubic Fe 3 O 4 nanocrystals are favored for the heterogeneous nucleation of CdSe as opposed to spherical ones. A three-stage growth model (heterostructures formation, the adsorption of Se and the heterogeneous nucleation and growth) is proposed, where choice of ligands, geometry features, such as surface curvature and defects are found to have significant impact to overcome energy barrier from lattice mismatch.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2025
·Vol. 131
·期 11
·1-12
·
IF 2.8
Song Ziyan,Ma Ruolong,Zheng Xiaodan,Zhang Limeng,Ruan Chuanda,Yan Xiaohui,Tian Fei
In this study, Fe 3 O 4 @C@Cu 2 O was synthesized using a solvothermal method. The morphology and structural characteristics of the material were systematically investigated through various characterization techniques, including TEM, XPS, FT-IR, DLS, and VSM. Its antibacterial efficacy was assessed through colony counting. Results showed that at a concentration of 0.5 mg/mL, Fe 3 O 4 @C@Cu 2 O nanoparticles with a copper atomic percentage of 2.42% achieved bactericidal rates of 98.45% against E. coli and 90.58% against S. aureus . Compared to pure Fe 3 O 4 @C and Cu 2 O, the composite material demonstrated a 100% bactericidal rate against E. coli and 99.23% against S. aureus . Notably, after five cycles, the composite nanoparticles maintained effective bactericidal rates, with 82.16% against S. aureus and 94.72% against E. coli . SEM images of bacterial morphology and EPR tests confirmed that the antibacterial mechanism primarily involves the generation of reactive oxygen species(ROS).
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）