JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2018
·Vol. 33
·期 3
·559-565
·
IF 0.524
Guo Huiling,Sun Honghao,Su Zhengding,Hu Shuchao,Wang Xiaotao
A facile approach has been developed to synthesize Fe 3 O 4 @PAM (polyacrylamide) nanoparticles (NPs) with carboxyl groups on the surfaces by copolymerization with acrylamide and acrylic acid in Fe 3 O 4 NPs aqueous suspension. Nitrilotriacetic acid (NTA) was conjugated to the magnetic NPs via well-known carboniimide chemistry using EDC and NHS. The Ni 2+ ions loaded on the surface of NPs provide abundant docking sites for immobilization of His-tagged green fluorescent proteins (His-tagged GFP). The high magnetic property of Fe 3 O 4 @PAM@NTA-Ni 2+ allows an easy separation of the NPs from solution under an external magnetic field, with high His-tagged protein binding capacity (42 μg protein/mg of NPs). The NPs can be recycled for at least four times without significant loss of binding capacity to proteins. These materials show great potential to separate His-tagged protein with low-cost purification at industrial scale.
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2017
·
IF 2.446
Chuan Ding,Xiaoshu Jiang,Xiaohong Huang,Hu Zhang,Wenqing Zhong,Yifei Xia,Chongjiang Dai
Fe 3 O 4 nanocrystals (NCs) composed of different proportion of {100} and {111} facets were prepared using oleic acid and decanoic acid as surfactant to mediate their growth process. It has been found that the morphology of Fe 3 O 4 NCs can be tuned by changing the ratio of oleic acid and decanoic acid. When tested as the anode materials in LIBs, the Fe 3 O 4 octahedrons obtained after annealing at 450 °C was found to exhibit superior electrochemical performances with a high reversible capacity of 882.6 mAh g −1 at 1 A g −1 over 200 cycles, whereas the Fe 3 O 4 cubooctahedron and cubes bearing poor electrochemical performances. The present results prove that the surface structure of Fe 3 O 4 polyhedrons significantly influence the utilization of Fe 3 O 4 active materials and hence their electrochemical performance although the morphology will be destroyed during cycling.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2017
·
IF 3.582
Hang Jia,Xue-Jian Liu,Xin Chen,Xin-Xin Guan,Xiu-Cheng Zheng,Pu Liu
Magnetic chitosan (CS-Fe 3 O 4 ) was synthesized via a co-precipitation method and used as supports to anchor palladium nanoparticles (Pd(0)/CS-Fe 3 O 4 ) by chemical reduction of PdCl 2 with NaBH 4 . The results showed that the nanosized palladium particles were highly dispersed onto CS-Fe 3 O 4 and the resulting Pd(0)/CS-Fe 3 O 4 catalysts exhibited high catalytic activity and good recyclability for the hydrolysis of ammonia borane (NH 3 BH 3 , AB). The turnover frequency (TOF) of the catalysts was as high as 15.0 m o l H 2 · m o l P d − 1 · m i n − 1 at 30 °C and the catalytic activity had not obvious decrease even after eight recycle experiments. The results of kinetic experiments showed that the activation energy of the reaction (E a ) is 35.94 kJ mol −1 . The orders of palladium and AB concentrations in the catalytic reaction were 0.70 and 0.62, respectively.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2017
·
IF 2.538
Xin Di,Wenbo Zhang,Zishuai Jiang,Ming Zhang,YaZhou Wang,Feng Liu,Shih-Hsin Ho,Chengyu Wang
A novel method is demonstrated for effective separation of surfactant-free oil-in-water emulsions via hydrophobic and lipophilic Fe 3 O 4 /sawdust composites (HFSCs) under magnetic stirring. The HFSCs were able to capture micron-sized oil droplets from the emulsion under electromagnetic stirring due to its adsorption, underwater lipophilicity and exceptional magnetic property. Surfactant-free oil-in-water emulsions, such as diesel, toluene and soybean, were separated less than 1.5 min. After being measured by a total organic carbon analyzer, the initial content of toluene was reduced by 97.6% in separated emulsion, demonstrating that the toluene was almost entirely removed from the emulsion. Furthermore, for water-in-oil emulsions, the oil is selectively allowed to pass through HFSCs-based composite membranes with initial flux of ∼1134 L m −2 h −1 and oil purity of the filtrate more than 99.9%. Moreover, the HFSCs can be reused for emulsion separation at least 10 times with little reduction of water contact angles (WCAs) and initial fluxes. The purity of the toluene filtrate was no less than 97% in the last separation. Therefore, the cost-effective and easily-operated preparation, reusable and eco-friendly material and convenient and efficient emulsions separation methodology offer great technological promise in the field of wastewater treatment , cleanup of oil spills, and fuel purification .
✓ 已验证
产品关联
DOI
高影响因子
Journal of Nano Research
·
2017
·
IF 0.511
Wan Xin Jia,Dong Tao Lu,Shao Min Shuang,Jun Yang,Chuan Dong
Magnetic chitosan nanoparticles (Fe3O4-CS MNPs) were synthesized by an improved one-pot hydrothermal method and applied for azo dye amido black 10B adsorption. The Fe3O4-CS MNPs were characterized by SEM, TEM, DLS, XRD, FTIR, TGA and VSM. The adsorptive behavior of amido black 10B on Fe3O4-CS MNPs was investigated using the UV-vis specteophotometric technique and the affecting parameters including solution pH, contact time, amido black 10B concentration and Fe3O4-CS MNPs amount were examined. The adsorption process followed the pseudo-second-order kinetic model. The adsorption equilibrium data fitted well with the Freundlich isotherm model with the saturated adsorption capacity of 124.8 mg/g at pH=2.0. The desorption experiment could be carried out using NaOH with the recovery of 91.78%. After five cycles, adsorption efficiency still reached 83.24%. The results showed that Fe3O4-CS MNPs possessed a simple synthesis route and excellent reusability, which have potential application in the adsorption of azo dye in environmental effluents.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Bin Li,Heng Liu,Xianrong Xing,Caixia Zeng,Min Zhang,Hailong Li,Na Lu
The development of sensitive and accurate glucose biosensors is significant in diabetic patient monitoring. Here, we synthesize carbon-decorated Fe3O4 nanotubes (Fe3O4@C NTs) using a rational designed template method. Through catalytic oxidation of a typical colorimetric reaction, the prepared Fe3O4@C NTs showed significantly better peroxidase-like and oxidase-like performances than other similar Fe3O4-based nanomaterials. Moreover, the optimal pH, temperature, and concentration for Fe3O4@C NTs were 4.0, 60 °C, and 40 μg/mL, respectively. We additionally investigated the steady-state kinetics of Fe3O4@C NTs, and their catalyzed reactions were found to follow the typical Michaelis–Menten model. Based on the peroxidase-like activity of Fe3O4@C NTs, they were employed for label-free, rapid, selective, and highly sensitive colorimetric detection of H2O2 and glucose, demonstrating a potential application for glucose determination.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2012
·
IF 3.461
Ruixiong Huang,Zhanqiang Fang,Xiaomin Yan,Wen Cheng
In this study, the Fe 3 O 4 magnetic nanoparticles (MNPs) were synthesized as heterogeneous catalysts to effectively degrade bisphenol A (BPA). The properties of the synthesized catalysts were characterized by Brunnaer–Emmett–Teller (BET), X-ray powder diffraction (XRD), X-ray photoelectron spectrometry (XPS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The results indicated that the Fe 3 O 4 MNPs appeared to be roughly spherical shapes and their average size was 10–20 nm. The catalytic capacity of MNPs in US + Fe 3 O 4 + H 2 O 2 system with different pH conditions, H 2 O 2 concentrations and MNPs doses was investigated. It was found that the OH radicals were promptly generated due to the catalysis of the Fe 3 O 4 MNPs. BPA could be degraded within a wide pH range from 3 to 9, and the degradation efficiencies were remarkably enhanced by ultrasound. The apparent rate constants were 8.31 × 10 −3 , 7.96 × 10 −3 and 5.64 × 10 −3 min −1 , respectively, when the pH values were 3, 7 and 9, respectively. The removal efficiencies of BPA were all over 95%. About half total organic carbon (TOC) in solution was eliminated under neutral condition by sono-Fenton process. Furthermore, the results of stability and reusability demonstrated that the Fe 3 O 4 MNPS were promising in the treatment of wastewater with refractory organics.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CONTROL
·
2024
·
IF 5.6
Xia Xu,Xin Liu,Yixing Qiu,Yufan Song,Xuxia Zhou,Yuting Ding
The accurate determination of histamine in fish is imperative for food safety, given the toxic nature of this biogenic amine . This study presents an innovative colorimetric aptasensor for the ultrasensitive detection of histamine in fish, utilizing nanozymes based on magnetic metal-organic frameworks coated with Pt nanoparticles (Fe 3 O 4 @MOF@Pt), which exhibit high peroxidase-like catalytic activity, magnetism, and superior optical properties. The surface of Fe 3 O 4 @MOF@Pt nanozymes were modified with DNA strands complementary to the histamine aptamer , creating effective colorimetric probes. In the presence of histamine, these colorimetric probes compete with histamine molecules for aptamer binding on the enzyme plate. Color development is triggered by adding a TMB and H 2 O 2 substrate solution to the enzyme plate. This competitive binding-based aptasensor allows for rapid and accurate histamine quantification within a linear range of 10 pM to 10 μM, and a notable detection limit of 6.23 pM. Furthermore, the sensor demonstrated excellent specificity, distinguishing histamine from l -histidine and other biogenic amines. Tested on mackerel samples, the aptasensor showed spiked recoveries of 91.4%–109.6%, validating its practical applicability. This sensor offers an ultrasensitive, specific, and reusable tool for histamine detection, representing a significant advancement in ensuring the safety of fish products.
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2017
·
IF 4.162
Rui Xiao,Xiaoting Zhang,Xiaona Zhang,Jiahua Niu,Minghua Lu,Xiuhua Liu,Zongwei Cai
In this article, a method for the analysis of flavors and fragrances including ethyl vanillin , trans-cinnamic acid, methyl cinnamate , ethyl cinnamate , and benzyl cinnamate in foods by HPLC with Fe 3 O 4 @GO nanocomposite as the adsorbent of magnetic solid-phase extraction was developed. The magnetic Fe 3 O 4 @GO nanocomposite was prepared and characterized by transmission electron microscope, infrared spectroscopy , X-ray diffraction and vibrating sample magnetometer. The as-prepared Fe 3 O 4 @GO nanocomposite was used as adsorbent for extraction and preconcentration of flavors and fragrances in foods. The extraction and desorption conditions including amount of materials, extraction time and desorption solvents were investigated. The analytes were separated within 10 min and detected with LODs ranged from 0.02 to 0.04 μg/mL. The recovery obtained from the analysis of spiked juice sample was between 71.5% and 112.4% with RSDs lower than 4.14%. The developed method was successfully applied to the analysis of real samples including orange juice, chocolate and fruit sugar.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Yiping Tang,Huanle Zhang,Jiquan Li,Guangya Hou,Huazhen Cao,Liankui Wu,Guoqu Zheng,Qingliu Wu
A novel three-dimensional ordered macroporous (3DOM) Cu/Fe 3 O 4 composite film was prepared by electrodepositing ferroferric oxide (Fe 3 O 4 ) on the 3DOM Cu current collector. Characterizations via electron microscopies and X-ray diffractions confirmed that achieved 3DOM Cu/Fe 3 O 4 composite inherited originally ordered porous structure, but has a layer of nanosized Fe 3 O 4 on the surface of the 3DOM Cu framework. The obtained 3DOM Cu/Fe 3 O 4 composite films were directly used as anodes of lithium ion batteries in the absence of conducting additives or binders. Results from electrochemical evaluations exhibited that the 3DOM Cu/Fe 3 O 4 anode could deliver a stable capacity of 800 mAh g −1 up to 400 cycles, while fast capacity degradation with 200 mAh g −1 retained after 100 cycles was observed on Fe 3 O 4 deposited on plane Cu substrate. The superior behavior of the 3DOM Cu/Fe 3 O 4 composite anode is ascribed to its unique porous structure, which provides sufficient space for large volume change of Fe 3 O 4 and greatly reduces the diffusion distance for Li-ion in the active material.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
·
2017
·
IF 2.962
Yu Jiang,Tao Deng,Yu Shang,Kai Yang,Hongyu Wang
Phenol-containing industrial wastewater disposal has received much attention in recent years due to its toxicity and slow biodegradation. In this work, the isolated fungal strain Debaryomyces sp. was entrapped into Ca-alginate beads with nanoscale Fe 3 O 4 to improve phenol biodegradation ability. Freely suspended cells as well as Ca-alginate immobilized cells without nanoscale particles were also prepared. Phenol removal by free cells and two kinds of Ca-alginate beads was evaluated with different initial phenol concentrations, temperatures, and salinities . The phenol biodegradation kinetics and optimal dosage of nano-Fe 3 O 4 during the preparation of Ca-alginate beads were also determined. The results showed that immobilized Debaryomyces strain had better biodegradation performance than free cells under harsh conditions. Phenol removal rates were highest when using magnetically immobilized cells, followed by nonmagnetically cells. More than 99.9% of phenol was degraded within 80 h by immobilized cells with nano-Fe 3 O 4 when initial phenol concentration was over 900 mg L −1 while the phenol removal efficiencies of free cell and immobilized cells without nano-Fe 3 O 4 were 34.5% and 81.3%, respectively during the same periods of time. The reusability tests were carried out and the results indicated good stability of immobilized cells in saline environments, which was practical in actual industrial wastewater treatment .
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2017
·Vol. 24
·期 23
·19011-19020
·
IF 2.741
Zhang Zhijia,Xing Defeng,Zhao Xin,Han Xiaojun
We demonstrated a method to form magnetic antimicrobial POHABA (poly- N , N ′-[(4,5-dihydroxy-1,2-phenylene)bis(methylene)]bisacrylamide)-based core-shell nanostructure by free-radical polymerization of OHABA on the Fe 3 O 4 core surface. The magnetic antimicrobial agent Fe 3 O 4 @POHABA can be used in domestic water treatment against bacterial pathogens. The thickness of POHABA shell could be controlled from 10.4 ± 1.2 to 56.3 ± 11.7 nm by the dosage of OHABA. The results of antimicrobial-activity test indicated that POHABA-based core-shell nanostructure had broad-spectrum inhibitory against Gram-negative, Gram-positive bacteria and fungi. The minimum inhibitory concentration (MIC) values of Fe 3 O 4 @POHABA nanostructure against Escherichia coli and Bacillus subtilis were both 0.4 mg/mL. Fe 3 O 4 @POHABA nanostructures responded to a permanent magnet and were easily recycled. Fe 3 O 4 @POHABA nanoparticles retained 100% antimicrobial efficiency for both Gram-negative and Gram-positive bacteria throughout eight recycle procedures.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）