JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2013
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IF 3.172
Zhifu Liu,Qinghong Zhang,Hongzhi Wang,Yaogang Li
A new type of photonic crystal structural colored fiber was prepared by assembling superparamagnetic chains on the surface of a flexible fiber in a magnetic field under photopolymerization . In this system, fixed structural colors (blue, green, and red) were generated instantaneously. The fiber with multi-stopband can also be prepared by carefully controlling the size of the magnetic spheres in each photopolymerization procedure. This method would be fast and facile for the further study of structural color on the surface of the fiber, and the process may be used to simulate the conventional fiber coloration process.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Lei Shi,Wenliang Tao,Nianben Zheng,Wei Tang,Tian Zhou,Zhiqiang Sun
Solar energy is promising for application in vapor generation and desalination that is reliant on conventional high-temperature fluid methods due to its renewable energy properties. Existing desalination technology has encountered a bottleneck due to high energy consumption, low water purity and high costs. In this work, a novel magnetic three-dimensional solar vapor generator inspired by cold evaporated heatsink is designed based on carbon fiber felt, which has the ability to efficiently absorb solar energy and evaporate seawater. In addition, a seawater desalination coupling salt production device is built, utilizing the photo-thermal interface as a means of accelerating both the evaporation and salt extraction processes using a magnetic field. Experiments and simulations are conducted to analyze the effects of materials, surface properties, device structure, solar illumination intensities and magnetic field conditions on evaporation efficiency. The results show that the device is able to achieve cold evaporation and harvests energy from the environment, reaching an evaporation efficiency of 130.7% under 1 sun illumination. Furthermore, with a magnetic field power of 5 kW m −2 , the device is able to achieve a remarkable evaporation rate of 7.05 kg m -2 h −1 under 1 sun illumination, which enables rapid fresh water extraction in extreme conditions. The device is simple in structure, cost-effective, and can be widely used in areas that face water and salt shortages.
研究领域:
材料科学
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能源技术
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环境科学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Yan Song,Weiyang Gao,Liang Sun,Junda Bai,Yi Zhang,Jingnan Zhu,Hua Xing,Chongyang Liang
The large decline in breast cancer mortality has been driven by rapid development and continuous progress in diagnostic techniques. However, it remains difficult to diagnose malignant lesions in distal branching ducts using mainstream techniques such as immunofluorescence ultrasound, molybdenum target, and ductoscopy. Combined with existing reports, we found that CEA level by ELISA in 13 patient 's nipple aspirate fluids (NAF) may be positively correlated with the malignancy of breast lesions. Here, considering the low content of CEA in NAF and the need for automated techniques for batch clinical testing, a magnetic induced mixing surface-enhanced Raman spectroscopy technique (SERS) was used to quantitatively analysis CEA concentration in NAF. In the appearance of CEA, an antibody-conjujated silver nano-probe (AgNPs-Ab1/4-ABP) can be linked onto the surface of another antibody-conjujated magnetic-probe. This immune sandwich-like structure enables more AgNPs-Ab1/4-ABP to remain in situ in the magnetic field. The magnetic spontaneous collection effect brings second SERS signal amplification at 1140 cm −1 approximately. After testing 10 clinical samples, the signal of Magnetic-Field Amplified SERS was not affected by the complex components in NAF, and a good linear range of 0.5–20 ng mL −1 could be achieved. This method might potentially be useful in the differential diagnoses of benign lesions with breast cancer and clinical follow-up of non-surgical intervention nipple discharge patients.
研究领域:
医学
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生物化学
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肿瘤学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Kecheng Wen,Yanting Zhang,Jinhui Xu,Xinyu Wang,Tinghui Zheng,Zhiwei Yang,Guozhong Zheng,Yuan Huang,Jing Zhang
A magnetic field (MF) was applied to selectively enhance the generation of reactive species in a ferrate (Fe(VI)) water treatment system, effectively mitigating the limitations associated with the selective oxidation of Fe(VI) for organic matter. An MF was introduced into Fe(VI) and Fe(VI)/H 2 O 2 systems, and a significant difference was observed in its enhancement of the removal efficiency of different types of contaminants. The results of radical scavenging experiments, high-valent Fe inhibition experiments, and methyl phenyl sulfoxide ( PMSO) chemical probe experiments indicated that the MF promoted the production of Fe(V)/Fe(IV) in the Fe(VI) system and ·O 2 – in the Fe(VI)/H 2 O 2 system, which modulated the generation of active species. Subsequently, by monitoring the change in product quantities during the decomposition of Fe(VI) and considering the theory of paramagnetism, it was hypothesized that the MF weakened the pathways for further self-reduction of Fe(V)/Fe(IV) in the Fe(VI) system and strengthened these pathways in the Fe(VI)/H 2 O 2 system: Fe(IV) → Fe(III) → ·O 2 − . Furthermore, the systems enhanced by the MF were more resistant to partial anions and environmental interference in water quality experiments. This suggested that the MF modulation method may have significant potential for practical applications.
研究领域:
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2019
·
IF 13.903
Dongdong Jin,Jiangfan Yu,Ke Yuan,Li Zhang
In nature, social insects are capable of self-organizing into various sophisticated and functional structures through local communications, which facilitate their cooperative accomplishment of complex tasks that are beyond the capabilities of individuals. Emulating this collective behavior in artificial robotic systems promises benefits in various engineering fields and has been partially realized through elaborate algorithm and physical designs. However, developing a swarm robotic system with group-level functionality at small scales remains a challenge. Herein, a microswarm system that mimics the structure and function of an ant bridge is realized by employing functionalized magnetite nanoparticles, which are paramagnetic and electrically conductive, as the building blocks. Through the application of a programmed oscillating magnetic field, the building blocks are reconfigured into a ribbon-like microswarm, which can perform reversible elongation with a high aspect ratio and, thus, is capable of constructing a conductive pathway for electrons between two disconnected electrodes with the bodies of functionalized nanoparticles. Furthermore, the microswarm is demonstrated to serve as a microswitch, repair broken microcircuits, and constitute flexible circuits, exhibiting a promising future for the practical applications in the electronics field.
研究领域:
材料科学
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生物启发工程
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电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yaoxing Wang,Ying Shang,Zhifeng Cao,Kaizhu Zeng,Yanjun Xie,Jian Li,Yonggang Yao,Wentao Gan
Various strategies have been used to improve the performance of non-noble catalysts, such as alloying, doping, and fine structure modulations. Herein, we reported a magnetic field-enhanced, bifunctional Ni 3 Fe/wood carbon electrode (Ni 3 Fe-CW) for efficient overall water splitting. Wood with numerous porous channels allows high loading of metal ions via the hydrothermal method, while the following high-temperature calcination leads to well-dispersed and uniform Ni 3 Fe nanoparticles , which are both electrocatalytically and magnetically active. As a result, the Ni 3 Fe-CW shows low overpotentials of 237 mV and 76 mV at 10 mA cm −2 for both oxygen and hydrogen evolutions under magnetic field (300 mT by a permanent magnet). Density functional theory calculations demonstrate that the Ni 3 Fe exhibits strong spin polarization under magnetic field with accelerated electron transfer , leading to lower reaction energy barrier and enhanced catalytic activities . Importantly, the electrolytic cell constructed by the bifunctional Ni 3 Fe-CWs as both cathode and anode displays a low cell voltage of 1.54 V at 10 mA cm −2 with an appropriate stability over 50 h (with a passive magnet). Considering the ubiquitous application of magnetic Fe, Co, Ni in catalytic reactions and the passive-radiation role of magnet, our strategy is promising for many energy conversion technologies toward highly efficient catalysis.
研究领域:
材料科学
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催化化学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2024
·
IF 14.3
Xinglong Gao,Zhong Zheng,Yifan Pan,Shuyi Song,Zhen Xu
The low lithium-ion conductivity of polyethylene oxide (PEO)-based polymer electrolytes limits their application in solid-state lithium batteries and related fields. Here, ionic liquids (ILs) are injected into hollow silicon nanorods (HSNRs) to prepare a composite solid polymer electrolyte (CSPE) with aligned HSNRs containing ILs (F-ILs@HSNRs). Applying a magnetic field promoted uniform dispersion and orientation of F-ILs@HSNRs in CSPE. The addition of F-ILs@HSNRs reduced PEO crystallinity and formed Li + transport pathways at the F-ILs@HSNRs/PEO interface. Calculations and multi-physics simulations reveal that ILs within F-ILs@HSNRs contribute most to lithium-ion conduction, followed by the F-ILs@HSNRs/PEO interface. When F-ILs@HSNRs are arranged perpendicular to the electrodes, the CSPE exhibits the shortest Li + migration pathways, resulting in stable and efficient lithium-ion conduction. The conductivity (2.14 × 10 −4 S cm −1 ) and lithium-ion migration number t Li+ (0.307) are the highest, being 125 times and 184% higher, respectively, than those of PEO-LiTFSI, when compared to CSPEs with randomly arranged or parallel-aligned F-ILs@HSNRs. Furthermore, Li|CSPE|Li batteries and LiFePO 4 |CSPE|Li batteries display stable cycling for over 2000 h, with coulombic efficiency approaching 100%. Excellent electrochemical reversibility is also confirmed in the rate performance test.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Ming Liu,Runan Chen,Jin Yuan,Cheng Chen,Zhilong Peng,Shaohua Chen
Droplet manipulations have important applications in many fields, especially droplet splitting and transport in aseptic operations or biochemical reagent analysis. However, droplet splitting or transport on existing functional surfaces is limited to predesigned microstructures or fixed patterns. It remains a challenge to realize reprogrammable surface microstructures for freely controllable droplet splitting and transport. In this study, a flexible technique for both the multimodal splitting and reciprocating transport of droplets on one surface is proposed. Such a surface is prepared with a facile fabrication method by premixing magnetic particles and softener into the polymer solvent matrix and immersing the solidified matrix in a lubricant. The movable wettability gradient is generated on the surface by an external magnetic field, which can act as an invisible “air knife” to split the droplet in multiple modes. The mechanism and critical conditions of droplet splitting are analyzed and revealed theoretically. Furthermore, the microstructural configurations and surface wettability can be reprogrammed by modulating the magnetic field strength and gradient. Accordingly, the splitting behavior of the droplet is transformed into the reciprocating transport behavior. The influencing factors of such behavior have also been analyzed. The reported reprogrammable manipulation of the droplet on one surface provides a versatile prototype for the actuation of droplets in microfluidic and biological analysis devices.
研究领域:
材料科学
·
生物分析
·
微流控技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Qian Yang,Xin Tong,Hongyang Zhao,Guohua Mi,Liping Gu,Li Xia,Zhiming M. Wang
Manipulating the intrinsic properties of colloidal quantum dots (QDs) to rationally construct a photoelectrochemical (PEC) device with exceptional solar-to-hydrogen conversion efficiency is a promising technology towards future global carbon neutrality. In this work, inherent electron spin polarization was introduced into CuInGaS (CIGS) QDs through magnetic Mn incorporation to realize a high-performing magnetic field-assisted solar-driven QDs-based PEC hydrogen generation system. Experimental and theoretical studies revealed that the induced spin-polarized electrons by magnetic element doping remarkably promoted the photogenerated carrier transfer/separation of QDs and corresponding photoelectrodes without modifying their structural/morphological features and light-absorption ability. Additionally, the nonradiative charge recombination within spin-polarized Mn-CIGS QDs-based photoelectrodes was more significantly suppressed when an external magnetic field was applied, which is ascribed to the synergistic effect of enhanced spin-polarized electrons and magnetic field-assisted photogenerated carrier migration. As a result, with the assistance of external magnetic field, as-fabricated spin-polarized QDs-based PEC cell exhibited an outstanding saturated photocurrent density of 14.7 mA cm −2 under 1 sun AM 1.5 G illumination (100 mW cm −2 ). Our findings offer new insights in tailoring the spin polarization characteristics of QDs to optimize the photoinduced charge dynamics for high-efficiency magnetic field-assisted solar energy conversion applications.
研究领域:
材料科学
·
能源科学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
NANO
·
2019
·
IF 1.293
Qiaoran Zhang,Zhiwei Li,Xiaohong Li,Laigui Yu,Zhijun Zhang,Zhishen Wu
Boron nitride nanosheet (BNNS) decorated with cobalt ferrite nanoparticle (CFN) to afford CFN-BNNS nanohybrid was prepared via a simple hydrothermal route and was well characterized. Subsequently, the as-prepared CFN-BNNS nanohybrid was incorporated into epoxy resin (EP) with the introduction of a weak rotary magnetic field to achieve order orientation, in order to reduce the fire risk and toxic hazards using enhanced shielding effect of BNNS upon combustion. Findings demonstrate that the CFN-BNNS nanohybrid is composed of CFN nanoparticle uniformly dispersed on BNNS surface. Thermal analysis and cone calorimeter data show that the CFN-BNNS nanofiller among EP matrix contributes to improving the char residues and mechanical properties of EP and reducing its fire risk as well as toxic hazards, especially the ordered one is advantageous over the disordered one in reducing the fire risk and toxic hazard. This is because, on the one hand, the orderly aligned BNNS as the physical barrier can more effectively prevent the transfer and diffusion of oxygen and heat. On the other hand, CFN can catalyze the degradation of EP to afford excessive chars on polymer surface; and it is also liable to decomposition during combustion, thereby generating ferrite species to promote EP degradation as well as cobalt species to enhance the oxidation of CO.
研究领域:
材料科学
·
燃烧科学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2023
·
IF 6.1
Xiaochong Song,Mingming Peng,Qing Luo,Xiaojia Huang
The dominant species of vanadium (V) are V(IV) and V(V) which exhibit different toxicity and biological effects. Thus, speciation of V(IV) and V(V) is highly essential. Efficient sample preparation is the core step in the quantification of V(IV) and V(V). In the present study, a new task specific microextraction column based on monolith mingled with Fe 3 O 4 nanoparticles (MBMC) was in situ synthesized in capillary and utilized as the extraction phase of magnetic field-assisted in-tube solid phase microextraction (MA-IT-SPME) of V(IV) and V(V) species which were coordinated with ethylene diamine tetraacetic acid (EDTA). The prepared MBMC presented porous and superparamagnetic properties, and possessed abundant functional groups. Results revealed that the exertion of magnetic field during adsorption and eluting steps boosted the extraction efficiency of V(IV)-EDTA and V(V)-EDTA chelates from 65.1 % to 55.7 %–90.0 % and 80.1 %, respectively. Under the beneficial extraction parameters, the established MA-IT-SPME was online hyphenated with HPLC/DAD to perform speciation of trace vanadium in water and vegetable samples, the achieved limits of detection were 0.054–0.060 μg/L and 1.4–1.5 μg/kg in water and vegetable samples, respectively, and the spiked recoveries varied from 82.5 to 118 %. In addition, relevant extraction mechanism under magnetic field was explored. In comparison with existing methods, the developed MA-IT-SPME technique displays some attractive merits such as automation, good anti-interference ability, high extraction efficiency, low cost and less use of organic solvent, in the capture of V species. The established online MBMC@MA-IT-SPME-HPLC/DAD system can become a competitive approach for sensitive speciation of V(IV) and V(V) at trace levels in complex samples.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Ping-an Yang,Rui Cai,Haibo Ruan,Mingqi Zhao,Xin Huang,Nanqing Zhang,Rui Li,Yuxin Zhang,Jiufei Luo
One-dimensional iron–nickel (Fe–Ni) heterogeneous nanowires with superior electromagnetic wave (EMW) absorption were successfully prepared by a magnetic-field-assisted liquid-phase reduction method. The electromagnetic properties of the absorber were controllably tuned by changing the atomic molar ratio of Fe to Ni. The composite with an Fe:Ni atomic molar ratio of 1:1.5 exhibited the finest EMW absorption characteristics. With a matched thickness of 2.175 mm, the minimum reflection loss (RLmin) at 18 GHz can be as high as 26.106 dB. Also, the majority of the Ku-band is covered by the effective absorption bandwidth (EAB, RL ≤ −10 dB), which is up to 6.08 GHz at 2.6 mm with a filler content of 25%. The excellent absorber performance is due to one’s own rich heterogeneous interface to conciliate the dielectric and magnetic losses. The successful exploration of the one-dimensional heterogeneous structure EMW absorber provides important insights for the future sensible fabrication of absorbers with excellent EMW absorption capability.
研究领域:
材料科学
·
电磁学
✓ 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）