JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 19
·15754-15762
·
IF 2.779
Zhang Ting,Chu Xueying,Jin Fangjun,Xu Mingze,Zhai Yingjiao,Li Jinhua
Sensors for rapid and reliable detection of biomolecules are crucial for clinical medical diagnoses. Here, a rapid, ultra-sensitive, magnetic-assisted biosensor based on resonance Raman scattering at MoS 2 @Fe 3 O 4 composite nanoflowers is presented. Raman shifts and X-ray photoelectron spectra indicated that the composite was formed via Fe–S covalent bonds. Convenient magnetic separations could be performed because of the superparamagnetic Fe 3 O 4 nanoparticles. MoS 2 E 1 2g and A 1g Raman peaks were used as probe signals for anti-interference immunoassays. The probe unit of the immunoassay also included goat anti-human IgG molecules that were used as the target analyte. Au substrates coupled with the goat anti-human IgG were used as capture units to form sandwich biosensors. Because of the magnetic enrichment, the detection limit was improved by three orders-of-magnitude and the detection time was reduced from 1.5 h to 1 min. Sandwich biosensors using MoS 2 @Fe 3 O 4 nanoflowers as Raman probes could be very promising sensors for proteins, antigens, and other immunogenic biopolymers, as well as for corpuscular viruses and cells.
研究领域:
生物医学工程
·
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Theranostics
·
2015
·
IF 8.022
Jie Yu,Wenyan Yin,Xiaopeng Zheng,Gan Tian,Xiao Zhang,Tao Bao,Xinghua Dong,Zhongliang Wang,Zhanjun Gu,Xiaoyan Ma,Yuliang Zhao
The ability to selectively destroy cancer cells while sparing normal tissue is highly desirable during the cancer therapy. Here, magnetic targeted photothermal therapy was demonstrated by the integration of MoS 2 (MS) flakes and Fe 3 O 4 (IO) nanoparticles (NPs), where MoS 2 converted near-infrared (NIR) light into heat and Fe 3 O 4 NPs served as target moiety directed by external magnetic field to tumor site. The MoS 2 /Fe 3 O 4 composite (MSIOs) functionalized by biocompatible polyethylene glycol (PEG) were prepared by a simple two-step hydrothermal method. And the as-obtained MSIOs exhibit high stability in bio-fluids and low toxicity in vitro and in vivo . Specifically, the MSIOs can be applied as a dual-modal probe for T 2 -weighted magnetic resonance (MR) and photoacoustic tomography (PAT) imaging due to their superparamagnetic property and strong NIR absorption. Furthermore, we demonstrate an effective result for magnetically targeted photothermal ablation of cancer. All these results show a great potential for localized photothermal ablation of cancer spatially/timely guided by the magnetic field and indicated the promise of the multifunctional MSIOs for applications in cancer theranostics.
研究领域:
生物医学工程
·
纳米医学
·
肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2020
·
IF 4.3
Kelin Shen,Yi Cui,Dongao Zhang,Meiying Liu,Hongye Huang,Xuefeng Sha,Fengjie Deng,Naigen Zhou,Xiaoyong Zhang,Yen Wei
In this work, we reported the preparation of MoS 2 -based Fe 3 O 4 magnetic composites (MoS 2 -Fe 3 O 4 MNPs) through the biomimetic strategy, which relied on the self-polymerization of dopamine under alkaline aqueous solution. The utilization of MoS 2 -Fe 3 O 4 MNPs as catalysts for Fenton reaction to degrade organic dyes was also examined in details. A number of experimental parameters, including concentrations of H 2 O 2 , dosages of MoS 2 -Fe 3 O 4 MNPs and pH values on the degradation efficiencies were evaluated. The mechanism for catalytic degradation of methylene blue through Fenton reaction was illustrated by electron spin resonance (ESR) measurement and results indicated that the generation of ·OH and ·O 2 − is the major reason for the degradation reaction. The results from recycle experiments suggest that catalysts possess good reusability. We demonstrated that Fe 3 O 4 MNPs would be well dispersed on the surface of MoS 2 sheets relied on the linkage by polydopamine (PDA), which prevented the aggregation of Fe 3 O 4 MNPs and thus maintained high efficiency. Furthermore, we proved that the catalysts could also have high removal efficiency under low catalyst dosage and H 2 O 2 concentration. In conclusion, we believed the MoS 2 -Fe 3 O 4 MNPs could be successfully fabricated via the biomimetic strategy and should be promising candidates for environmental treatment. The biomimetic method should be also expanded for fabrication of other functional composites owing to the universal adhesion of PDA.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
PHYSICA SCRIPTA
·
2024
·
IF 2.6
Siyi Xu,Danyi Li,Wenrui Wang,Lin Lin,Ying Sun,Jihao吉豪 Li李,Linfan Li
In recent years, there has been significant interest in using two-dimensional MoS2 to enhance flame retardancy, which has proven challenging. MoS2@Fe3O4 nanosheets were successfully synthesized via a one-step method called radiation reduction to boost MoS2's flame retardant properties. Incorporating these MoS2@Fe3O4 nanocomposites notably improved the flame retardancy of ethylene vinyl acetate copolymer (EVA). Compared to pure EVA, EVA nanocomposites with 1 part of MoS2@Fe3O4 showed a 17.4% reduction in peak heat release rate, 40.4% decrease in total heat release, and 52.9% reduction in total smoke release, with scaly residue content improving from 0.4% to 12.6%. Additionally, MoS2@Fe3O4 incorporation enhanced the mechanical and friction properties of EVA composites, increasing tensile strength by 25.7% and elongation at break by 10.4% compared to pure EVA. This study presents an effective and simple method for producing modified MoS2 nanosheets that enhance flame retardancy, as well as mechanical and friction properties of EVA composites.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 7
·9640-9649
·
IF 2.478
Ding Xiao,Fan Guang,Huang Yi,Wang Jianguo
Reduced graphene oxide-molybdenum disulfide (RGO-MoS 2 ) loaded Fe 3 O 4 nanoparticles composite (RGO-MoS 2 -Fe 3 O 4 ) is prepared via two-step hydrothermal reaction. RGO-MoS 2 possesses three dimension architecture structures. This structure can prevent RGO and MoS 2 nanosheets restacked together and provide substrates for the Fe 3 O 4 nanoparticle decoration. The sizes of Fe 3 O 4 are in the range of 5–20 nm. As a microwave absorbent: the minimum reflection loss (R L ) value is -47.67 dB at 17.44 GHz when the thickness is only 1.5 mm. The absorption bandwidth (R L < −10 dB) can reach 4.72 GHz with the thickness is 1.7 mm. Compared with the previously reported literature, RGO-MoS 2 -Fe 3 O 4 nanocomposite exhibits excellent microwave absorption performance and can be served as an light-weight microwave absorber.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Xuelin Wang,Chenjian Li,Haoran Geng,Jian Xie,Zhimin Chen,Xiaolin Zhang,Chuanxi Xiong,Shan Wang
Molybdenum disulfide (MoS 2 ) has been considered as an excellent candidate for microwave absorption applications due to its appropriate electrical conductivity and large area size. In this study, the MoS 2 /Fe 3 O 4 /PANI nanocomposite (MFP), a MoS 2 based ternary composite absorbing material with multiple heterostructures is prepared through composite with ferroferric oxide (Fe 3 O 4 ) and polyaniline (PANI) and exhibits excellent microwave absorbing performance. Owning satisfactory impedance matching and multiple interfacial polarization, the minimum reflection loss of MFP can reach −50.3 dB at a thickness of 2.6 mm, and the effective absorption bandwidth is 5.1 GHz. Meanwhile, the whole X and Ku-band absorption can also be achieved with specific MoS 2 loading at an optimized thickness. The ternary composite enhances the ability of electromagnetic waves attenuation by reducing dielectric constant and improving impedance matching, which is a novel medium adjusting strategy to provide a new insight for MoS 2 in the field of microwave absorption and national defense security stealth technology.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Xiaozi Lin,Xi Wang,Qingwei Zhou,Chengyan Wen,Shaoqiang Su,Jie Xiang,Pengfei Cheng,Xianbiao Hu,Ye Li,Xin Wang,Xingsen Gao,Richard Nözel,Guofu Zhou,Zhang Zhang,Junming Liu
Photocatalysis is one of the most promising technologies in wastewater treatment. However, the inactivity to visible light and the inconvenience to recycle severely limit its practical application. In this work, via a facile hydrothermal method, Fe3O4 NPs were integrated onto the surfaces of 3D ball-flower-like MoS2 microspheres as efficiently visible light responsive and magnetically recyclable photocatalysts. Experimental results indicate that, an optimal loading amount (20 wt %) of Fe3O4 NPs can not only effectively enhance the photocatalytic ability of the MoS2/Fe3O4 (MF) hybrid composite with approximately 2 times better than pure MoS2, but also make it conveniently recycle from water by an external magnetic field. The photoelectrochemical studies also reveal that the incorporation of Fe3O4 NPs can effectively enhance the charge transfer rate and accelerate separation of photoinduced charge carriers. The surface catalytic mechanism of MF hybrid composite was also explored through XPS spectra. With both the excellent photocatalytic performance and magnetical recyclability, the 20 wt %-MF hybrid composite is considered to be a promising and competitive photocatalyst for wastewater treatment utilizing solar energy.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Yanhua Lei,Mengchao Ding,Sha Cheng,Da Huo,Fei Zhang,Tao Liu,Yuliang Zhang
The transition metal sulfide MoS 2 has attracted great interest from the scientific community as an excellent co-catalyst for promoting Fe 2+ /Fe 3+ cycling in advanced oxidation processes to enhance the efficiency of H 2 O 2 decomposition. A photothermal-enhanced photo-Fenton pollutant degradation strategy was proposed. Hybrids of magnetically recyclable Fe 3 O 4 fabricated 1 T-2 H MoS 2 (1 T-2 H MoS 2 @Fe 3 O 4 ) with excellent photothermal conversion efficiency were fabricated to overcome the limitations of relatively low catalytic activity and cycling stability in Fenton reaction. XRD , Raman, TEM and hysteresis loop were employed to evaluate the heterogeneous phase 1 T-2 H MoS 2 nanoflowers as well as the magnetic property . The 1 T-2 H MoS 2 @Fe 3 O 4 hybrids with excellent photothermal conversion efficiency not only enhance the reaction temperature of the Fenton reaction occurring on the material surface, but also demonstrate an effective interfacial photothermal water evaporation efficiency. Due to the synergistic effect of photocatalysis and photo-Fenton catalytic reaction , a quick degradation of simulated pollution were achieved in 5 mins with 98.3% degradation, which could be further improved to 99% due to the photothermal promoting reaction. The 1 T-2 H MoS 2 @Fe 3 O 4 hybrids exhibit good magnetic recyclability, cyclic stability and photothermal performance, which endow it a wide potential application in the field of environmental remediation and the field of water evaporation at the photothermal interface, etc.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2017
·Vol. 7
·期 10
·303
·
IF 3.553
Haijiao Lu,Jingkang Wang,Hongxun Hao,Ting Wang
With a large specific surface area, high reactivity, and excellent adsorption properties, nano zerovalent iron (nZVI) can degrade a wide variety of contaminants in wastewater. However, aggregation, oxidation, and separation issues greatly impede its wide application. In this study, MoS2/Fe3O4/nZVI nanocomposites were successfully synthesized by a facile step-by-step approach to overcome these problems. MoS2nanosheets (MNs) acted as an efficient support for nZVI and enriched the organic pollutants nearby, leading to an enhanced removal efficiency. Fe3O4nanoparticles (NPs) could not only suppress the agglomeration and restacking of MNs, but also facilitate easy separation and recovery of the nanocomposites. The synergistic effect between MNs and Fe3O4NPs effectively enhanced the reactivity and efficiency of nZVI. In the system, Cr(VI) was reduced to Cr(III) by nZVI in the nanocomposites, and Fe2+produced in the process was combined with H2O2to further remove 4-Chlorophenol (4-CP) through a Fenton reaction. Furthermore, the nanocomposites could be easily separated from wastewater by a magnet and be reused for at least five consecutive runs, revealing good reusability. The results demonstrate that the novel nanocomposites are highly efficient and promising for the simultaneous removal of Cr(VI) and 4-CP in wastewater.Keywords:nZVI;modification;nanocomposites;Cr(VI);4-CP;Fenton reaction;pollution treatment;recyclability;wastewater
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zejun Cao,Ruixi Xiao,Yuxia Chen,Jiangtao Dong,Xuezhong Du
The widespread global use of paraquat (PQ) is attributed to its high herbicidal efficacy and low cost, however, the unresolved issue of its fatal toxicity to humans after ingestion remains a major challenge. The nanocarriers MIL-101(Cr)@MoS 2 @Fe 3 O 4 (MMF) are synthesized to load PQ through the strong π–p electron coupling between the delocalized π electrons of PQ and the localized p electrons of S atoms of MoS 2 at the interface, and then encapsulated with chitosan to construct magnetically recyclable PQ nanoherbicides with excellent stability and biosafety. The release of PQ from the nanoherbicides in simulated human gastrointestinal environments is inhibited (“PASS0” logic gate) from the source, thereby enhancing user safety. Under natural sunlight conditions, the near-infrared photothermal effect of MMF weakens the strong interfacial π–p electron coupling between PQ and MMF, resulting in the release of PQ (“YES” logic gate). The PQ nanoherbicides maintain the herbicidal efficacy of bare PQ in practical applications. The residual nanoherbicides can be easily recovered using magnets, with the collection ratios of 97.8 % and 91.1 % in water and soil, respectively, at a magnetic field strength of 0.5 T. Seed dressing, cytotoxicity, and mouse models demonstrate that the nanoherbicides have excellent biosafety for both plant growth and PQ-ingesting users. The creative PQ nanoherbicides simultaneously address the challenging issues of user safety, herbicidal efficacy, and environmental friendliness from the source.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 56
·期 8
·5015-5030
·
IF 3.553
Zhang Zhijuan,Shi Rui,Wang Fuyu,Wang Shuang,Fu Guoyuan,Zou Xinyu,Li Lei,Yu Li,Tian Yurun,Luo Fang
Abstract We synthesized fluffy MoS 2 material stacked by ultrathin nanosheets through adjusting different mass ratios of starting materials via a facile hydrothermal method. Surprisingly, XRD characterization results demonstrated that the intensity ratio of (100) to (002) of ultrathin MoS 2 nanosheets was 0.90 with a 4:5 (CH 3 CSNH 2 : Na 2 MoO 4 ·2H 2 O) mass ratio (M4-5). To the best of our knowledge, this value should be high, implying that the obtained MoS 2 nanosheets exposed considerable (100) facets. Because the noncentrosymmetric Mo-2S on edges terminated by dangling bonds exhibits rich defects, high active MoS 2 edge planes (100) prevail over inert MoS 2 basal planes (002). To overcome its easy suspension and difficult recovery, the magnetic Fe 3 O 4 was selected for in situ doping with ultrathin M4-5, and a unique structure of stable MoS 2 @Fe 3 O 4 (M@F) nanocomposites-like randomly stacked rose petals-wrapped spherical chocolate beans was obtained for the first time. The introduction of Fe 3 O 4 has to sacrifice some edge active sites, but after balancing the magnetic and active sites, (100)/(002) of MoS 2 in M@F can also reach 0.56, showing that edges of MoS 2 nanosheets are still multi-exposed. Abundant exposed edges of M@F provide numerous active centers, so M@F nanocomposites exhibited excellent performance for both the 4-nitrophenol (4-NP) reduction and dye adsorption. Therefore, it has great application prospects in wastewater treatment and reduction reaction and is also worth exploring in other applications. Graphical abstract
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 41
·19593-19604
·
IF 3.591
Yaoyu Tan,Huan Jiang,Baihui Wang,Xia Zhang
Surface-enhanced Raman scattering (SERS) is an ultrasensitive fingerprint spectroscopy technique. The combined application of SERS and nanozymes has shown excellent prospects in the field of biomedical diagnosis. In the present study, polyaniline@MoS2@Fe3O4@Au (PANI@MoS2@Fe3O4@Au) nanozymes were successfully prepared using hydrothermal reactions. PANI@MoS2@Fe3O4@Au nanozymes have not only dramatically enhanced the peroxidase-like activity but also significantly enhanced the SERS performance. We also studied the effect of different concentrations of HAuCl4·4H2O on the SERS activity of nanozymes and found that PANI@MoS2@Fe3O4@Au nanozymes prepared using 2 mg mL−1 HAuCl4·4H2O solution exhibited the best SERS performance. We used SERS to study the enzyme kinetics of the nanozymes, and the results showed that the nanozymes have a strong affinity for H2O2 and TMB. Finally, we combined PANI@MoS2@Fe3O4@Au nanozymes and glucose oxidase (GOx) to establish a SERS glucose biosensor, which has the advantages of ultrasensitivity, high-precision, and a wide linear response range. The linear response range of glucose is 10−11–10−3 M, and the detection limit is 10−12 M. More importantly, we have successfully determined the glucose content in human serum samples with satisfactory accuracy. This work provides an essential new strategy for designing composite nanozymes for biocatalysis and provides a new idea for constructing high-sensitivity SERS biosensors.
研究领域:
生物医学诊断
·
纳米材料科学
·
分析化学
✓ 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）