ACS Applied Nano Materials
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2022
·
IF 6.14
Yinghua Tao,Yucheng Li,Dandan Wei,Min Liang,Pengfei Ren,Jidong Dai,Tianzhu Zhang,Jiandu Lei,Peidang Liu
Multifunctional nanomaterials with diagnostic and therapeutic capabilities offer promising customized nanomedicines for cancers. However, achieving good execution of these functions in vivo employing a single nanoframework remains challenging, and only a few of these magnetic nanocarriers have been validated for clinical use. In this study, based on biocompatibility and remarkable multifunctionalities, we describe a novel approach to synthesize small Fe3O4 nanoparticles conjugated with natural polysaccharide pectin and assembled into a pH-responsive T1-weighted magnetic resonance imaging contrast agent, Fe3O4@PD, for better chemotherapeutic efficacy. In vitro studies revealed that the conjugated doxorubicin (DOX) was quickly released in the tumor microenvironment by cleavage of the acid-sensitive acylhydrazone bond at a release rate of 89.72% and exerted a considerable inhibitory effect on breast cancer cells. In vivoT1-weighted images of mice showed that Fe3O4@PD displayed darkening to brightening contrast enhancement at tumor sites, and the relative signal-to-noise ratio of the tumor site reached its maximum (increased to about 2.27-fold) for distinguishing the normal and tumor tissues. Thus, this Fe3O4@PD-based system has the potential to be a multifunctional nanodrug delivery system, and as a smart theragnostic platform, it has broad application prospects in clinical and biological works, such as cell-based diagnostics and in vivo medication monitoring.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Xiao-Ying Li,Wen-Qing Ding,Pan Liu,Lei Xu,Ming-Lai Fu,Baoling Yuan
The p -arsanilic acid ( p -ASA) and roxarsenic (ROX) are typical organic arsenic compounds (OACs), which can be evolved into highly poisonous inorganic arsenic species in the aqueous solution. Herein, a magnetic MOFs-based composite of Fe 3 O 4 /MIL-101 was successfully obtained by a stepwise solvothermal method and further used in the adsorption of p -ASA and ROX. The structural and physicochemical characteristics of Fe 3 O 4 /MIL-101 were firstly investigated in detail. It was found that Fe 3 O 4 microspheres were evenly embedded on the polyhedral MIL-101 surface after the solvothermal process and exhibited a strong superparamagnetic property. After adsorption, a simple external magnetic field can be used to quickly separate the composite from the aqueous solution. The adsorption experiments indicated that the composite is an excellent adsorbent with maximum adsorption capacities of 683.44 and 946.57 mg·g −1 for p -ASA and ROX, respectively. In addition, the effects of composite dosage, initial pH and co-existing anions on the adsorption efficiency were investigated. The main adsorption mechanism consists of the existence of hydrogen bonding , π-π stacking and As-O-Fe coordination between Fe 3 O 4 /MIL-101 composite and OACs. We believe that this study would be very meaningful to promote the application of magnetic MOFs based composites for effective adsorption for OACs in the environmental remediation.
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TALANTA
·
2023
·
IF 6.1
Qingying Wang,Lianfang Chen,Xiaoyan Cui,Jie Zhang,Yaohui Wang,Xiupei Yang
Herein, a covalent organic framework (COF) was grown on a magnetic metal-organic framework (MOF) by a solvothermal method for the efficient extraction of bisphenols (BPs). The magnetic solid-phase extraction (MSPE) of four bisphenols (bisphenol A, bisphenol B , bisphenol AF and bisphenol C) was carried out without adjusting the pH and salt concentration. When 30 mg Fe 3 O 4 @NH 2 -MIL-88(Fe)@TpPa was used to adsorb for 25 min, 6 mL methanol was used to elute for 20 min, and the extract was detected by high-performance liquid chromatography (HPLC). The proposed method has a low detection limit of 0.011–0.036 ng mL −1 , a wide linear range of 0.05–100 ng mL −1 , and a correlation coefficient (R 2 ) of 0.9980–0.9998. The intra-day and inter-day precisions are 0.74–2.54% and 1.68–3.72%, respectively. Bisphenol A was determined by applying the proposed method to the determination of actual milk samples. The standard addition experiment showed that the relative recovery of the four bisphenols was 85.70–119.7%. Pseudosecond-order, first-order, Langmuir and Freundlich models were applied to explore the adsorption characteristics of Fe 3 O 4 @NH 2 -MIL-88(Fe)@TpPa. In general, the established Fe 3 O 4 @NH 2 -MIL-88(Fe)@TpPa-MSPE-HPLC-UV method exhibits attractive sensitivity, simple manipulation, and excellent reusability, and it has excellent prospects for the detection of trace BPs in complex milk matrices.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Jie Ding,Lei Wang,Yu-long Ma,Yong-gang Sun,Ying-bo Zhu,Li-qiong Wang,Yuan-yuan Li,Wen-xin Ji
Investigating the mechanisms of interfacial processes of supported metal catalysts is crucial for advanced oxidation processes (AOPs) of peroxymonosulfate (PMS) activation on efficient water remediation. In this research, we have successfully synthesized an exclusive nanocarbon catalyst encapsulating Fe 3 O 4 nanoparticles in hollow multi-porous structures (termed ‘H-Fe 3 O 4 @C') as a catalyst for activating PMS towards the degradation of bisphenol-A (BPA). Superior catalytic performance of H-Fe 3 O 4 @C was observed as BPA was completely degraded within 40 min. This observation ascribed to stronger interfacial interactions between the Fe and C layer, which could be attributed to the presence of multiple Fe-C bonding that allows for electron tunnelling to the adjacent carbons than Fe 3 O 4 . The results of density functional theory calculations show that the Fe 3 O 4 active center encapsulated in the center of the carbon framework can regulate the adsorption tenderness of carbon materials, resulting in excellent interfacial interaction provided optimal active sites with low adsorption energy(−1.31 eV) and long O-O bond(d O-O = 1.592 Å). Electrochemical analysis conceded that the atomic interfacial bonds (Fe-C) promoted electronic communication between surfaces. At the same time, the vacuum packaging structure enhances the stability of the catalyst and prevents the continuous leaching of active metals. The dissolved iron concentration after the reaction of H-Fe 3 O 4 @C was only 3.37% of that of bare Fe 3 O 4 (14.6 mg L −1 ). Overall, this research sheds a new insights on the critical role of strong interfacial interactions in non-radical activation of PMS.
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RSC Advances
·
2023
·Vol. 13
·期 37
·25828-25835
·
IF 3.9
Xia Xu,Liming Yang,Yanjun Cui,Bing Hu
The successful development of efficient and stable catalysts for 4-NP reduction reactions is beneficial to the environment and ecology. Fe3O4@Pt exhibits excellent catalytic performance for 4-NP reduction reaction due to the synergistic effect between Fe and Pt. But its structure and catalytic performance are extremely unstable. Here, we utilized the small-scale organic compound 2-hydroxyethylamine as surfactant to construct a stable composite nanomaterial. Then investigated the influence of monochromatic light (650 nm, 808 nm and 980 nm) and temperature on the kinetics of 4-NP reduction reaction by 2-hydroxyethylamine stabilized Fe3O4@Pt. The results indicate that both temperature and monochromatic light radiation can affect kinetic regulation. Increasing temperature can promote the catalytic rate, while monochromatic light radiation can induce agglomeration and inhibit the catalytic rate. This study opens up a new way for developing and regulating catalysts for heterogeneous catalysis reactions.
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高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 8
·1-11
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IF 5.7
Fei Jianwen,Yang Wei,Dai Yin,Xu Wei,Fan Huizhu,Zheng Yani,Zhang Jun,Zhu Wanying,Hong Junli,Zhou Xuemin
A novel magnetic nanozyme Fe 3 O 4 @MXene-Au nanocomposite, which possessed higher peroxidase-like activity than that of Fe 3 O 4 nanoparticles and Fe 3 O 4 @MXene nanocomposites, was developed. The outstanding magnetic properties of the nanozyme endowed it with the ability of simple and rapid separation, achieving great recyclability. Based on Fe 3 O 4 @MXene-Au nanocomposites and glucose oxidase (Glu Ox), a highly selective colorimetric biosensor for glucose detection was developed. Fe 3 O 4 @MXene-Au nanocomposites can catalyze H 2 O 2 produced from glucose catalyzed by glucose oxidase to ·OH and oxidize colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to blue oxidized TMB (oxTMB) with a significant absorbance at 652 nm. The linear range of glucose was 0–1.4 mM under optimal conditions, with a limit of detection (LOD) of 0.11 mM. Glucose in human whole blood was successfully detected with satisfactory recoveries. Furthermore, a facile agarose hydrogel detection platform was designed. With smartphone software, glucose detection can be realized by the agarose hydrogel platform, demonstrating the potential in on-site and visual detection of glucose. Graphical abstract
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Sitao Wang,Xuewen Zhao,Zhijie Liu,Xueling Yang,Bolun Pang,Yuting Gao,Renwu Zhou,Dehui Xu,Jinying Zhang,Tianqi Zhang,Michael G Kong
The contamination of water bodies has been caused by the overuse of antibiotics to an alarming extent. Green and enhanced treatment technologies for wastewater are necessary to limit the uncontrollable spread of antibiotic pollution. Herein, an efficient photocatalysis-self-Fenton system based on violet phosphorus (VP)-Fe 3 O 4 is constructed to achieve significant degradation performance. The VP-Fe 3 O 4 combined with underwater bubble plasma (UBP) has been demonstrated to obtain a norfloxacin (NOR) degradation rate as high as 91.8% with the VP content of 15 wt%, which is 77.3% and 22.2% higher than that in sole VP-Fe 3 O 4 and UBP, respectively. The •OH radicals have been demonstrated by the radical trapping test to play a crucial role in NOR removal processes. The VP-Fe 3 O 4 has also been found to have a higher synergistic degradation ability with UBP than the well-known reduced graphene oxide-Fe 3 O 4 , which is due to the excellent reducibility and electron donating ability of VP, boosting the cycle of Fe(II)/Fe(III) in Fenton reactions . The VP-Fe 3 O 4 can also consume O 3 generated by UBP, with the enhanced in-situ H 2 O 2 production. Besides, the efficient utilization of H 2 O 2 via the Fenton reaction improves the generation of •OH. A clear signal of DMPO-OH has been detected by electron spin resonance after 24 h post-discharge, further substantiating the sustainable regeneration of •OH by the synergetic system in the absence of additional reagents. Three possible degradation pathways are proposed based on the density functional theory (DFT) calculation and the degradation by-products of NOR determined during the synergetic treatment. Eventually, the synergetic degradation mechanism in the VP-Fe 3 O 4 /UBP system is elucidated. This research would provide a promising strategy for environmental remediation via the incorporation of photocatalysis-self-Fenton system and underwater bubble plasma.
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RSC Advances
·
2022
·Vol. 12
·期 38
·25060-25067
·
IF 4.036
Dan Chen,Chunqiong Wang,Dezhi Yang,Huimin Deng,Qiulan Li,Li Chen,Gaokun Zhao,Junli Shi,Ke Zhang,Yaling Yang
The rapid and onsite detection of glyphosate in tobacco products is still a great challenge. In this study, a novel smartphone-assisted sensing platform for the detection of glyphosate has been successfully proposed through the peroxidase-like activity of Fe3O4-based nanozyme. Heptanoic acid/Prussian blue (PB) decorated Fe3O4 nanoparticles (Fe3O4@C7/PB) could catalyze and oxidize 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS, colorless) into a steel blue colored product in the presence of hydrogen peroxide. Glyphosate could specifically inhibit the peroxidase-like activity of Fe3O4@C7/PB by occupying the active site, thereby the glyphosate detection could be accomplished within 10 min by monitoring the color change of ABTS. This study has developed a smartphone-based portable detection platform for online analysis of glyphosate with a detection limit of 0.1 μg mL−1. The absorbance response curve of glyphosate showed good linearity in the concentration range of 0.125–15 μg mL−1 at 415, 647, and 730 nm. Moreover, by employing a co-precipitation technology and inhibiting the peroxidase-like activity, the glyphosate analysis would be less affected by the tobacco sample matrix. The nanosensor possesses excellent selectivity and anti-interference ability, which has application value in actual samples for onsite screening.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2022
·
IF 9.136
Ming Xiao,Ruixue Li,Xinyu Hu,Wenke Zhu,Zhuo Yu,Hongbo Xiao,Wenlei Wang,Ting Yang
This paper is focused on the functional photocatalyst of in-situ carbon-doped TiO 2 decorated Fe 3 O 4 heterojunctions (C/TiO 2 @Fe 3 O 4 ) for the efficient photocatalytic oxidation of As(III). Series of characterizations show that the photocatalytic activity of TiO 2 changes from a single UV wavelength to visible light excitation when carbon atoms are successfully doped in the TiO 2 lattice, expanding the utilization rate of light energy. DFT calculation further confirmed that the C–O–Ti bonds can diminish the theoretical band-gap of TiO 2 . Furthermore, the successful construction of C–O–Ti and Ti–O–Fe interface bonds provide pathways for fast electron transfermation, which can effectively prompt the separation of photo-generated carriers and enhance the photocatalytic oxidation efficiency of As(III). The application results showed that the synthesized C/TiO 2 @Fe 3 O 4 photocatalyst by introducing Fe 3 O 4 with a mass fraction of 1% can complete the transformation of As(III) (10,000 μg/L, 40 mL) to As(Ⅴ) within 12 min under visible light irradiation. In addition, C/TiO 2 @Fe 3 O 4 exhibits excellent reusability, which remains 100% photooxidation efficiency of As(III) without changing crystal structure after 6 cycles and can also be recovered completely with magnet. The remarkable photocatalytic oxidation performances of C/TiO 2 @Fe 3 O 4 can be ascribed to the synergistic effects of OH, O 2 − and h + in the photocatalytic oxidation process and the constructed C–O–Ti and Ti–O–Fe interface bonds.
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高影响因子
POLYHEDRON
·
2022
·
IF 2.975
Chunqing Wang,Na Xia,Siming Zhu,Lin Chen,Liang Chen,Zhendong Wang
In this study, α- l -rhamnosidase was immobilized on magnetic Fe 3 O 4 /MIL-101 (Cr) nanoparticles using MIL-101(Cr) as precursor by crosslinking method. The crosslinking agent concentration ratio and crosslinking time were EDC/NHS 1:1 and 2 h, respectively. The immobilized materials were characterized by FT-IR, XRD, SEM and VSM. The saturation magnetization of the prepared magnetic nanoparticles was 46.2 emu/g. The optimum pH and temperature of immobilized enzyme were 6 and 60 °C. The application of immobilized enzyme in the preparation of hesperidin dihydrochalcone glucoside (HMGDC) by hydrolysis of hesperidin dihydrochalcone (HSDDC) was studied. The results showed that immobilized enzyme had better temperature resistance, repeatability and stability than free enzyme. The immobilized enzyme activity was 293.55 U/g, and the recovery was 116.03%. After treatment at 60 °C for 4 days, the enzyme activity remained at 24.6%. The conversion rate of HSDDC reached 93.1%.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Fan Wang,Rongrong Ma,Jinling Zhan,Wenshuo Shi,Yuanyuan Zhu,Yaoqi Tian
Development of novel superhydrophobic adsorbents to remove oil spills that threaten aquatic ecosystems is necessary. To realize smart superhydrophobic starch-based adsorbents and reduce the use of metal-oxide particles in magnetic superhydrophobic coating , silylated porous starch/Fe 3 O 4 hybrid micro/nanoparticles (SPF) were developed, and then innovatively introduced onto the surface of starch cryogel (SPF@SC) by spray-coating technique. The surface chemical composition and hierarchical micro/nanostructures, which contribute to the high water contact angle (>152.0°) and low sliding angle (<9.0°) of the as-prepared material, were characterized in detail. SPF@SC possessed excellent water repellent, self-cleaning, and anti-fouling properties, as well as good mechanical and chemical durability. SPF@SC can be remotely propelled by a magnet on the surface of water to flexibly clean discrete oil patches. Moreover, an internal/external collaborative oil absorption behavior was also found unexpectedly in the absorbent. This study provides a strategy for the design of novel adsorbents that could be applied to tackle discrete oil contaminates over the ocean.
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Water
·
2022
·Vol. 14
·期 2
·261
·
IF 3.53
Zijian Zhao,Hui Jiang,Lang Wu,Ning Yu,Zhengwei Luo,Wenhua Geng
A novel cobalt ion-imprinted polymer (Co(II)-MIIP) based on magnetic Fe3O4nanoparticles was prepared by using Co(II) as the template ion, and bis(2-methacryloxyethyl) phosphate and glycylglycine as dual functional monomers. The fabricated material was analyzed by Fourier transform infrared spectroscopy, thermogravimetric analysis, field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, Brunauer–Emmett–Teller, X-ray diffraction, and vibrating sample magnetometer. The adsorption experiments with Co(II)-MIIP, found that the maximum adsorption capacity could reach 33.4 mg·g−1, while that of the non-imprinted polymer (Co(II)-NIP) was found to reach 15.7 mg·g−1. The adsorption equilibriums of Co(II)-MIIP and Co(II)-NIP was established within 20 min and 30 min, respectively. The adsorption process could be suitably described by the Langmuir isotherm model and the pseudo-second-order kinetics model. In binary mixtures of Co(II)/Fe(II), Co(II)/Cu(II), Co(II)/Mg(II), Co(II)/Zn(II), and Co(II)/Ni(II), the relative selectivity coefficients of Co(II)-MIIP toward Co(II)-NIP were 5.25, 4.05, 6.06, 11.81, and 4.48, respectively. The regeneration experiments indicated that through six adsorption–desorption cycles, the adsorption capacity of Co(II)-MIIP remained nearly 90%.Keywords:cobalt;ion-imprinted polymers;magnetic nanoparticles;dual monomers;selective adsorption
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