SOLAR ENERGY
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2019
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IF 4.674
Lei Shi,Xinzhi Wang,Yanwei Hu,Yurong He
The significant improvement in photocatalytic activity achieved in recent years has generated widespread attention due to its utilization in solar energy. In this study, two shapes of magnetic nanoparticles were synthesized using hydrothermal method. The magnetic nanoparticles exhibited superior photocatalytic activity for water treatment, which takes into consideration the photo-thermal conversion of magnetic nanoparticles. The effect of morphology on the photo-degradation was analyzed by the specific surface area measurement and photoluminescence test. Furthermore, the suspension degradation rate with magnetic nanoparticles was enhanced by ~200% compared to a commercial photocatalyst. Moreover, the photo-degradation efficiency further increased from 96.4 to 99.6% with the magnetic field intensity increased because of the absorbance ability enhancement. This result indicates that the photocatalytic activity of a magnetic photocatalyst can be enhanced through photo-thermal conversion and magnetic field regulation, which expands the application of solar power technology.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
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2016
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IF 1.083
Zijian Su,Yuanbo Zhang,Jun Chen,Bingbing Liu,Guanghui Li,Tao Jiang
In this study, a process of magnetizing roasting followed by magnetic separation, which is used to separate or recover tin and iron from the high calcium type tin- and iron-bearing tailings (containing 35.53 wt.% Fe and 0.56 wt.% Sn), was investigated . A magnetic concentrate containing 66.3 wt.% Fe and 0.07 wt.% Sn with an iron recovery rate of 92.9 wt.% was obtained under optimal conditions: anthracite ratio of 2.5:100, roasting temperature of 850°C, roasting time of 30 min, grinding time of 10 min, and magnetic field intensity of 0.1 T. In addition, the effect of roasting parameters on the separation of iron and tin and phase transformation of SnO2 was investigated by using X-ray powder diffraction, Scanning Electron Microscopy–Energy Dispersive Spectroscopy, etc.
研究领域:
冶金学
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矿物加工
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材料科学
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产品关联
DOI
高影响因子
TALANTA
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2023
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IF 6.1
Zixuan Ding,Peilin Wang,Zhenrun Li,Yupeng Guo,Qiang Ma
The combination of highly sensitive electrochemiluminescence (ECL) techniques with localized surface plasmon resonance (LSPR) effect can achieve the highly sensitive and specific detection in the analytical and biosensing applications. However, how to effectively improve the electromagnetic field intensity is an unresolved issue. Herein, we have developed an ECL biosensor based on sulfur dots and [email protected] nanorod array architecture. Firstly, the high luminescent sulfur dots with ionic liquid capping (S dots (IL) have been prepared as the new ECL emitter. The ionic liquid greatly improved the conductivity of sulfur dots in the sensing process. Furthermore, [email protected] nanorods array structure was constructed on the electrode surface by the evaporation induced self-assembly. On the one hand, the LSPR of [email protected] nanorods was more significant than that of good nanomaterial due to the plasma hybridization and the competition between free electrons and oscillating electrons. On the other hand, nanorods array structure had strong electromagnetic field intensity as hot spots due to the surface plasmon coupling ECL effect (SPC-ECL) effect. Therefore, the Au @Ag nanorods array architecture not only greatly enhanced the ECL intensity of sulfur dots, but also changed the ECL signals into polarized emission. Finally, the constructed polarized ECL sensing system was used to detect the mutated BRAF DNA in the eluent of thyroid tumor tissue. The biosensor showed the linear range from 100 fM to 10 nM with a detection limit of 20 fM. The satisfactory results demonstrated that the developed sensing strategy had great potential in the clinical diagnosis of BRAF DNA mutation in thyroid cancer.
研究领域:
分析化学
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生物传感
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纳米技术
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癌症诊断
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2023
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IF 9.5
Yufan Zhang,Fan Cao,Min Xu,Xinrui Li,Mengdan Tao,Shanshan Wu,Wei Xu,Yan Liu,Wanying Zhu
Despite the fact that human neural cell models have played significant roles in both research and cell replacement therapies for neurological diseases, the existing techniques for obtaining neurons from human pluripotent stem cells (hPSCs) are arduous and intricate. Additionally, the evaluation of neuron quality in the natural environment remains deficient. Consequently, we have developed a comprehensive platform utilizing magnetic-field-directed self-assembly (MDSA) of MXenes@Fe3O4 (M/F) nanocomposites. This platform facilitates the cultivation and in situ analysis of differentiated dopaminergic (DA) neurons. Our results showed that the introduction of M/F enhances neurite outgrowth and leads to the development of more intricate ramifications. Moreover, with the increase of magnetic field intensity, neurite outgrowth is further enhanced, and the proportion of differentiated mature neurons from hPSCs increases. This suggests that our platform promotes the maturation of neurons, emphasizing the crucial role of biophysical cues in expediting the differentiation process. The homogenization platform formed by MDSA of M/F nanocomposites exhibits high conductivity, leading to its exceptional performance in the real-time monitoring of the release of dopamine neurotransmitter from hPSC-derived DA neurons. Hence, this platform demonstrates significant potential for monitoring cell quality. In conclusion, our integrated platform, based on MDSA of M/F nanocomposites, offers a reliable and efficient means for the in vitro generation of human neurons with a controllable quality. The as-prepared platform holds potential for enhancing neuronal maturation and ensuring consistent cell quality, showing significant implications for in vitro biological research, disease modeling, and cell replacement therapy.
研究领域:
神经科学
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干细胞生物学
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生物传感
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材料科学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Mingliang Luo,Xiaodong Si,Mingzhong Li,Yige Huang,Qinpeng Li,Changheng Li
In this study, we designed a magnetic responsive hydrogel, also known as magnetorheological gel (MRG), based on a carbonyl iron particle@polyacrylamide (CIP@PAM) composite and a water-soluble PAM matrix to use as a temporary plugging agent (TPA) in the hydraulic fracturing of unconventional hydrocarbon reservoirs. The CIP@PAM composite was synthesized and characterized by Fourier transform infrared spectrometry (FT-IR), scanning electron microscopy (SEM), laser particle size analysis (LPSA) and vibrating sample magnetometry (VSM). The results show that a thin and uniform PAM layer was successfully coated on the surface of the CIPs, which plays a key role in enhancing the antioxidant capacity of the CIPs. Meanwhile, the CIP@PAM composite possesses a high saturation magnetization (148.8 emu/g). MRG as a TPA has a high gel strength and magnetorheological effect under a magnetic field intensity of 1 T, providing a breakthrough pressure up to 38.13 MPa at room temperature . Compared with the conventional temporary plugging agent, MRG as the temporary plugging agent possesses high magnetic responsiveness to easily control, good degradability and recyclability, providing great potential application in hydraulic fracturing.
研究领域:
材料科学
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化学工程
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石油工程
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纳米技术
✓ 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）