Green Energy & Environment
·
2025
·
IF 14.6
Wenjun Zhu,Bofeng Zhang,Fanxing Bu,Minghai Zhao,Xinyong Tao,Keli Liu,Yuwen Fang,Wei Luo
1T-MoS 2 nanosheets, with metallic conductivity and high capacity, hold great potential for lithium-ion capacitors (LICs), but suffer from sluggish reaction kinetics due to dense stacking. Herein, 1T-MoS 2 nanosheets with enlarged interlayer spacing, vertically bonded to reduced graphene oxide (rGO) (1T-MoS 2 /rGO), were designed using a hydrothermal-assisted dispersion and intercalation strategy. The active nitrogen species derived from N, N-dimethylformamide (DMF) not only bridge the rGO and MoS 2 through strong Mo-N-C bonds to promote the formation of dispersed MoS 2 nanosheets, but also intercalate into the MoS 2 structure, further enlarging the interlayer spacing. This unique structure synergistically enhances meso- and microscale mass transfer outside and inside of the few-layered nanosheets, significantly improving electrochemical reaction kinetics and reducing the kinetic mismatch between the anode and cathode. Consequently, the resulting 1T-MoS 2 /rGO achieves a capacity of 500 mAh g -1 after 500 cycles at 5 A g -1 and a high rate performance of 587 mAh g -1 at a high rate of 10 A g -1 . Moreover, the assembled 3D vertical 1T-MoS 2 /rGO//AC LIC delivers a high energy density of 100.3 Wh kg -1 at a power density of 1.0 kW kg -1 , and long cycle stability with capacity retention as high as 91.02% after 5000 cycles at 2 A g -1 . This work provides a generalizable strategy for engineering two-dimensional material-based electrodes, offering new insights into high-performance energy storage systems.
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Advanced Healthcare Materials
·
2025
·Vol. 14
·期 11
·2404842
·
IF 9.6
Xiaojun Long,Jiawei Wang,Huijuan Wang,Kepeng Hu,Wei Zhang,Weiming Lin,Chao Fang,Kui Cheng,Zhangfa Song
Photothermal therapy (PTT) combined with chemotherapy using hydrogel as a delivery platform is considered a promising strategy for the treatment of advanced colorectal cancer (CRC). However, maintaining the stability of photo-absorbing agents (PTA) in the hydrogel and ensuring that the hydrogel remains anchored to the tumor tissue presents significant challenges. Herein, this work introduces an injectable 2D molybdenum disulfide (2D-MoS 2 )-integrated adhesive hydrogel, specifically N-(2-aminoethyl)-4-(4-(hydroxymethyl)-2-methoxy-5-nitro-sophenoxy) butanamide-linked sodium alginate-MoS 2 -5-fluorouracil (AlgNB/MoS 2 /5-FU). This hydrogel functions as a near-infrared light (NIR)-triggered photothermal and drug-delivery implant for CRC treatment. The MoS 2 nanosheets maintain superior dispersibility in the hydrogel and exhibit a highly efficient NIR-triggered photothermal effect. Importantly, the aldehyde group in AlgNB also imparted tissue adhesion to the hydrogel, the adhesive hydrogel is used to infiltrate and anchor within tumor tissue. The injectable adhesive AlgNB/MoS 2 /5-FU hydrogel shows remarkable efficacy in inhibiting SW480 cells proliferation and promoting colorectal tumor regression by triggering PTT and delivering the 5-FU drug in both in vitro and in vivo studies. The potential synergistic mechanism of PTT and 5-FU chemotherapy may contribute to inhibiting DNA repair and enhancing a robust immune response. Therefore, this research provides valuable strategic insights for the synergistic treatment of localized CRC.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Bobin Xu,Yingying Su,Li Li,Rui Liu,Yi Lv
Novel fluorescent thioglycollic acid (TGA) surface-functionalized single-layered thickness structured MoS 2 nanosheets were purposely synthesized by a facile one-step hydrothermal treatment of using molybdenyl acetylacetonate, TGA and sodium sulfide as precursors. During the process of synthesis, we subtly solved the problem of the poor water solubility of the precursor molybdenyl acetylacetonate, and obtained thiolated single-layer MoS 2 nanosheet (TGA-MoS 2 ) with excellent water solubility and stable fluorescence property. The fluorescence of TGA-modified MoS 2 nanosheets was significantly suppressed in the presence of dopamine (DA), and a simple sensing system for highly selective, fast, direct detection of dopamine was established. Meanwhile, the present methodology has a wide detection range of 0.05 μΜ to 20 μΜ, a comparable detection limit of 27 nM and an extremely short response time of 3 min. To understand the fast response behavior, we tried effort to explain the interaction mechanisms between TGA-MoS 2 nanosheets and the quencher DA. Further research suggests that the possible mechanism might be the charge transfer (CT) by the stacking of MoS 2 layers through C O⋯H O hydrogen boding interaction, providing a fast fluorescence sensing platform for DA determination in urine and serum sample.
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Energy Storage Materials
·
2020
·
IF 16.28
Muhammad Waqas,Yupei Han,Dongjiang Chen,Shamshad Ali,Cheng Zhen,Chao Feng,Botao Yuan,Jiecai Han,Weidong He
With high energy density and low cost, lithium sulfur (Li–S) batteries own the potential to be next-generation electrochemical storage/conversion devices. However, their cyclic stability and life span are considerably impaired by polysulfide shuttling and self-discharge. Here, we design a microfiber glass filter-molybdenum disulfide/carbon-titanium nitride (μFGF-MoS 2 /C–TiN) interlayer for suppressing the shuttle of polysulfides and self-discharge of Li–S batteries. TiN in the interlayer molecularly captures high-order polysulfide Li 2 S 8 with an adsorption energy up to −6.48 eV, the largest high-order polysulfide absorption value ever reported. The μFGF-MoS 2 layer mechanically seizes polysulfides with interconnected torturous mesopores by functioning as a molecular sieve . With a sulfur loading of 4.5 mg cm −2 , the Li–S batteries based on μFGF-MoS 2 /C–TiN exhibit remarkable over-1000-cycle stability with an only 0.05% capacity decay per cycle and deliver an initial discharge capacity of 1000 mAh g −1 at 1C. The self-discharge is alleviated with an insignificant 10.3% capacity loss after a 30-day rest.
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高影响因子
ACS Applied Nano Materials
·
2021
·
IF 5.097
Peng Yang,Haifeng Yang,Zhengyuan Wu,Fuyou Liao,Xiaojiao Guo,Jianan Deng,Qiang Xu,Haomin Wang,Junjie Sun,Fei Chen,Wenzhong Bao,Laigui Hu,Zhongkai Liu,Yulin Chen,Zhi-Jun Qiu,Zhilai Fang,Ran Liu,Chunxiao Cong
Van der Waals heterostructures composed of atomically thin two-dimensional (2D) materials and three-dimensional (3D) materials provide a multidimensional material integration strategy, which combines materials with different characteristics leading to a wider degree of freedom than a single component, and offer a way for developing electronic and optoelectronic devices with multifunctionalities, such as high-frequency electronic devices, photodetectors, valley-spin electronic devices, and so on. This report demonstrates the direct growth of large-area monolayer MoS2 single-crystal nanosheets with a side length of more than 100 μm on 3D GaN substrates by the perylene-3,4,9,10-tetracarboxylic acid tetrapotassium salt (PTAS) seed-assisted chemical vapor deposition (CVD) method. The seeding promoters changed the growth kinetics of MoS2 on the GaN substrate, which is different from the previously reported epitaxial growth behavior. The size of our synthesized single-crystal MoS2 nanosheets is 2 orders of magnitude larger than the reported epitaxially grown MoS2 on the GaN substrate. Meanwhile, the as-synthesized MoS2 by the seed-assisted CVD method has comparable crystal quality as that of the reported epitaxially grown MoS2 on the GaN substrate. Moreover, detailed characterizations indicate that noticeable charge transfer occurs between MoS2 and the GaN substrate, which suggests that the MoS2/GaN heterostructure has great potential applications in the field of light-emitting diodes (LED) and valley-spin electronic devices.
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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
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2020
·
IF 3.232
Shasha Feng,Jingjing Lv,Fubin Pei,Xuchu Lv,Yi Wu,Qingli Hao,Yuehua Zhang,Zhaoyang Tong,Wu Lei
A novel method for turn-off sensing 1,1-diamino-2,2-dinitroethylene (FOX-7) in aqueous medium was first proposed based on the inner filter effect (IFE) of FOX-7 on the fluorescence of molybdenum disulfide quantum dots (MoS 2 QDs). Water-soluble MoS 2 QDs as the fluorophore were prepared by the simple hydrothermal method . The morphology, structure, composition and optical properties of the prepared MoS 2 QDs were characterized by Transmission electron microscopy (TEM), Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), UV–vis absorption and photoluminescence spectra. The results showed that the MoS 2 QDs had good water dispersibility and emitted strong photoluminescence with a particle size of 2 nm. Under the optimal experimental conditions, the fluorescence signal of MoS 2 QDs was quenched in the concentrations range of FOX-7 (0.5–100 μM) and the limit of detection (LOD) of the sensor was 0.19 μM. The method had been applied to analyze the real water samples with good selectivity and stability. Moreover, the quenching mechanism was studied systematically by the Fourier transform infrared (FT-IR), UV–vis absorption spectra, fluorescence lifetime , and Stern-Volmer equation, which had been proved to be static quenching. The fluorescence quenching mechanism is mainly IFE and electron transfer.
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高影响因子
Journal of Physical Chemistry C
·
2023
·
IF 3.7
Yong Yang,Shenman Yao,Wufei Gong,Yan Liang,Ting Yu,Cailei Yuan
Light excitation has been developed as an economical way to realize room-temperature gas sensing recently. However, the high recombination rate of photogenerated carriers in semiconductor gas sensing materials leads to very limited carriers that can effectively take part in sensing reactions, which greatly restricts the further performance improvement of gas sensing under light excitation. Here, a hierarchical Z-scheme heterostructure microsphere of MoS2/SnO2 is designed and prepared. The heterostructure demonstrates an outstanding NO2 sensing performance at room temperature with the excitation of a low-power LED light (0.06 W), which exhibits an ultrahigh sensitivity of 264.2 to 10 ppm of NO2 along with acceptable response/recovery properties. The physical mechanism of NO2 sensing is analyzed. The results suggest that the construction of the Z-scheme heterostructure between MoS2 and SnO2 can greatly promote the separation of photogenerated carriers so that more photogenerated carriers can take part in the NO2 sensing reaction. Furthermore, the designing of a hierarchically porous structure can provide abundant active sites for gas sensing reactions. The work not only expands the development of Z-scheme heterostructures in gas sensing but also provides a strategy to promote the performance of light-excited gas sensors by designing a Z-scheme heterostructure with a hierarchically porous structure.
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高影响因子
Analytical Methods
·
2022
·Vol. 14
·期 20
·1956-1962
·
IF 3.532
Zhilian Cui,Dujuan Li,Weihuang Yang,Kai Fan,Hongying Liu,Fei Wen,Lili Li,Linxi Dong,Gaofeng Wang,Wei Wu
An electrochemical biosensor based on few-layer molybdenum disulfide (MoS2) nanosheets was fabricated for the highly sensitive detection of tumor marker circulating tumor DNA (ctDNA) in this paper. The MoS2 nanosheets with few layers were prepared by the shear stripping. Compared with the mechanical stripping method and the lithium ion intercalation method, this method is simpler to operate, and the prepared MoS2 nanosheets had good electrochemical activity. The biosensing platform was fabricated based on the discriminative affinity of MoS2 nanosheets towards single-stranded DNA (ssDNA) and double-stranded DNA (dsDNA). Methylene blue (MB) was used as the signal molecule. The results showed that the detection of ctDNA by this sensor showed an excellent linear relationship in the concentration range of 1.0 × 10−7 M to 1.0 × 10−16 M, and the detection limit was 2.5 × 10−18 M. In addition, this sensor exhibited outstanding stability and specificity. This strategy provides an alternative approach for ctDNA detection and an effective sensing strategy for future in vitro cancer diagnosis by label-free detection.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Jianrong Wu,David H. Bremner,Shiwei Niu,Huanling Wu,Junzi Wu,Haijun Wang,Heyu Li,Li-Min Zhu
The combination of different therapies into a single platform has attracted increasing attention as a potential synergistic tumor treatment. Herein, the fabrication of a novel folate targeted system for chemo-photothermal therapy by using thioether-bridged periodic mesoporous organosilica nanoparticles (PMOs) as a drug-loading vehicle is described. The novel targeted molecular bovine serum albumin-folic acid-modified MoS 2 sheets (MoS 2 -PEI-BSA-FA) were successfully synthesized and characterized, and then utilized as a capping agent to block PMOs to control the drug release and to investigate their potential in near-infrared photothermal therapy. The resulting PMOs– [email protected] 2 –PEI-BSA-FA complexes had a uniform diameter (196 nm); high DOX loading capacity (185 mg/g PMOs-SH); excellent photothermal transformation ability; and good biocompatibility in physiological conditions. The PMOs– [email protected] 2 –PEI-BSA-FA exhibited pH-dependence and near infrared (NIR) laser irradiation-triggered DOX release. In vitro experimental results confirmed that the material exhibits excellent photothermal transfer ability, outstanding tumor killing efficiency and specificity to target tumor cells via an FA-receptor-mediated endocytosis process. The in vivo experiments further demonstrated that the platform for synergistic chemo-photothermal therapy could significantly inhibit tumor growth, which is superior to any monotherapy. Meanwhile, cytotoxicity assays and histological assessments show that the engineered [email protected] 2 –PEI-BSA-FA have good biocompatibility, further inspiring potential biomedical applications. Overall, this work describes an excellent drug delivery system for chemo-photothermal synergistic targeted therapy having good drug release properties, which have great potential in cancer therapy.
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高影响因子
ACS Omega
·
2020
·
IF 2.87
Maoyong Zhi,Quanyi Liu,Yinlong Zhao,Shansong Gao,Zheng Zhang,Yuanhua He
A novel MoS2–DOPO hybrid has been successfully synthesized through the grafting of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) on the surface of MoS2 nanosheets using allyl mercaptan as an intermediate. MoS2–DOPO was used as a flame retardant additive to prepare flame-retardant flexible polyurethane foam (FPUF). The influence of MoS2–DOPO on the mechanical, thermal stability, and flame retardancy properties of FPUF composites were systematically investigated. The incorporation of MoS2–DOPO could not deteriorate greatly the tensile strength and 50% compression set of FPUF composites, but effectively improves the char residue. The cone calorimeter and smoke density tests results revealed that the peak heat release rate, total heat release, and the maximum smoke density of the MoS2–DOPO/FPUF composite were reduced by 41.3, 27.7, and 40.5%, respectively, compared with those of pure FPUF. Furthermore, the char residue after cone calorimeter tests and pyrolysis gaseous products of the MoS2–DOPO/FPUF composite were analyzed by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and thermogravimetric analysis/infrared spectrometry. The results suggested that the MoS2–DOPO hybrid played a synergistic flame retardant effect of gas and condensed bi-phase action. In addition, a possible flame retardancy and smoke suppression mechanism of the MoS2–DOPO/FPUF composite were proposed. This study provides a facile and promising strategy for the fabrication of polymer materials with excellent flame retardancy and smoke suppression properties.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xiaoping Wang,Qian Xiao,Chao Wu,Pan Li,Shengji Xia
A thin-film composite polyamide membrane has been widely implemented in water desalination. However, the balance between permeability and selectivity by decreasing structural stability has restricted their larger-scale applications in water desalination. Here, we fabricated nanofiltration membranes (NFMs) by interfacial polymerization on polyvinylidene fluoride (PVDF) substrates modified with hierarchical flower-like molybdenum disulfide (HF–MoS 2 ). The thin-film nanocomposite (TFN) NFMs exhibited a water flux up to 21.5 LMH/bar and rejection rates of 98.6% for Na 2 SO 4 . Steric hindrance and Donnan exclusion together contributed to high salt rejection rates, as evidenced by a less polyamide layer thickness such as 56 nm and a high surface negative charge at pH 3–10. Note that the nanocomposite substrate became more porous, more hydrophilic, and rougher than the non-nanocomposite one, due to an increase in the fraction of macroporous on the surface, which was known to affect the performance of the polyamide layer. The high content of HF-MoS 2 incorporated in PVDF substrate led to enhanced hydrophilicity and, consequently, a cross-linking degree of defect-free polyamide, resulting in declines in thickness and increases in water permeability and salt rejection. Furthermore, TFN NFMs exhibited an excellent organic solvent resistance and long-term stability, indicating that HF-MoS 2 incorporation had no adverse effect but even improved their structural stability. Compared to NFMs without MoS 2 modification, NFMs with MoS 2 modification showed a better performance for desalination of real seawater and excellent anti-biofouling properties for lysozyme and bovine serum albumin. Taking together, the TFN NFMs provide high permeability and rejection rate without a decline in structural stability. Therefore, TFN NFMs were promising candidates for practical water desalination treatment.
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