MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2021
·
IF 3.927
Xing-Liang Yin,Lei-Lei Li,Yao Lu,Shu-Rui Han,Jian-Min Dou,Da-Cheng Li
A novel pomegranate-like Zn x Cd 1-x S@MoS 2 core@shell nano-heterostructure was synthesized by using a facile one-pot solvothermal approach. In this architecture, the MoS 2 nanosheet and well-dispersed Zn x Cd 1-x S nanospheres serve as peel and seeds, respectively. While maintaining the advantages of nanoscale materials, such as high ratio of surface to volume and a relatively short charge transportation path, this unique structure also provides some additional positive features for H 2 generation application: (1) the intimate contact of MoS 2 and Zn x Cd 1-x S contributes to the well-defined heterostructure formation and thus enhances H 2 generation efficiency; (2) the MoS 2 nanosheets with amorphous-like structures providing numerous active sites for H 2 generation; (3) the multiple pore nano structure promotes mass transfer and allows the active site through exposure; (4) the coated MoS 2 with superior chemical stability protects Zn x Cd 1-x S from photocorrosion and disaggregation. With those advantages, the Zn x Cd 1-x S@MoS 2 heterostructure exhibits a high photocatalytic H 2 evolution rate of 28.22 mmol g −1 h −1 far exceeding that of pristine Zn x Cd 1-x S by a factor of more than 56 and maintains long term stability with no obvious active deterioration in 24 h performance evaluation. Moreover, the one-pot synthesis of this heterostructure significantly saves time and energy, rendering it cost-efficiency. The demonstrated strategy here could have great significance in the design and fabrication of the low-cost and high-efficient heterogeneous photocatalysts .
研究领域:
材料科学
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
H.T. Zheng,Y.C. Zhang,X. He,H.H. Liu,A.Y. Chen,X.F. Xie
Self-healing hydrogels exhibit special self-healing or self-recovery function like human skin after injuring, thereafter, draw lots of attention in biomedical applications. However, self-healing hydrogels with strong mechanical and rapid self-healing properties are not fully realized. MoS 2 /polyvinyl alcohol (PVA) hydrogels are developed to achieve rapid self-healing function by utilizing the excellent photothermal conversion effect of MoS 2 under near-infrared (NIR) light. Effects of microstructure and content of MoS 2 on self-healing and mechanical properties of MoS 2 /PVA hydrogels are investigated, including flower-like MoS 2 spheres by bottom-up hydrothermal reaction and MoS 2 sheets by liquid-phase stripping method. The MoS 2 /PVA hydrogels embodied with the two types of MoS 2 were produced by simple freezing/thawing method, and exhibited rapid self-healing function, together with simultaneous enhancement of strength and ductility. The MoS 2 /PVA hydrogel modified by flower-like MoS 2 spheres with a content of 0.5 wt% presents a significant self-healing function with a healing efficiency up to 90.0% within 5 min, and an enhancement of tensile strength of 9.1 MPa (190% to blank PVA) and a ductility of 162.5% (290% to blank PVA). Furthermore, the MoS 2 /PVA gel with flower-like MoS 2 spheres into the PVA networks produces a significant enhancement of fracture strength (58.4 MPa) after fully curing, characterized by an increases of 612% compared with the pure PVA. The photo-induced self-healing and strengthening effects of the MoS 2 /PVA hydrogels are discussed.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Wenhui Zhu,Ali Reza Kamali
Metastable monoclinic molybdenum trioxide (β-MoO 3 ) combined with perfect hexagonally-shaped MoS 2 and graphene nanosheets are fabricated by facile mechanochemical-molten salt treatment of irregularly-shaped molybdenum disulfide (MoS 2 ) and graphite in air. This hybrid nanostructure exhibits an excellent Li-ion storage performance, outperforming the nanocomposites made of conventional orthorhombic α-MoO 3 . To this end, ball-milled MoS 2 and graphite are treated in the presence of sodium chloride (NaCl) at 900–1200 °C, leading to the preparation of MoS 2 /MoO x @graphene (MSO@G) nanocomposites in an easily scalable and affordable way. The formation of β-MoO 3 is realized at 1100 °C (MSO@G-1100), outperforming the electrochemical performances of other samples and the initial MoS 2 . Moreover, the influence of binder on the electrochemical performance of MSO@G-1100 is studied, based on which polystyrene acrylic-acrylate (SAE) is found to provide a considerably low charge transfer resistance (27.59 Ω), outperforming conventional binders. The electrode exhibits a reversible Li-ion storage capacity of 878 mAh g −1 after 245 cycles at the current density of 100 mA g −1 . The capacitive contribution to the total Li-ion energy storage performance of MSO@G-1100/SAE is found to be significant with the value of around 62% at the potential scan rate of 0.3 mV s −1 . This article report on the facile, clean and sustainable preparation of β-MoO 3 based nanocomposites with remarkable electrochemical performance.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
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2021
·Vol. 94
·期 10
·2402-2409
·
IF 5.488
Chen Jie,Hu Ruhui,Zhu Han,Wang Yindian,Mao Zhihui,Hu JunJie,Hu Xiaojun,Chen Hongxia
Molybdenum disulfide nanosheets (MoS2 NSs) show great promise in the field of optical biosensors due to its unique optical transparency and semiconducting properties. In this work, supramolecule calix[4]arene (pSC4) modified MoS2 NSs (pSC4-MoS2 NSs) was synthesized through a one-step preparation method. The strong p-π binding and electrostatic interactions between pSC4 and MoS2 NSs increased the stripping efficiency by preventing aggregation of nanosheets. Based on pSC4-MoS2 NSs, a simple and feasible surface plasmon resonance (SPR) sensor was proposed. SPR refractive index change experiments were conducted to evaluate the sensor’s sensitivity performance, and the three main parameters of sensitivity were improved. Benefiting from the modification of pSC4, proteins were captured with higher surface coverage through the host-guest recognition, which is identical to optimization analysis experiment. According to a bovine serum albumin antibody immune experiment, pSC4-MoS2 NSs based SPR sensors provided a new sensitive sensing interface with a 50.85% SPR signal increased compared that of MoS2 NSs modification. Therefore, supramolecule modified MoS2 NSs is promising for application to SPR immunosensing for the detection of cancer biomarkers.
研究领域:
材料科学
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生物医学工程
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光学传感器
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Binbin Ding,Lianbi Li,Kaiwen Gong,Lei Li,Tianming Wang,Yaxian Yang,Changjun Zhu,Zebin Li,Guoqing Zhang,Dezhong Cao,Caijuan Xia,Wenzhi Yu
Stacking structures show great potential for the modulation of physical properties of two-dimensional materials. However, most studies have focused on bilayer (BL) stacking MoS 2 with same morphology. Here, we report a simple but effective process for manufacturing multilayer stacking MoS 2 crystal microstructures. The epitaxial growth mechanism is investigated by studying a typical trilayer (TL) stacking MoS 2 with different shapes. Raman and photoluminescence (PL) mapping exhibit high homogeneity and obvious boundary contrast between the different structures. The TL-MoS 2 microstructure field-effect transistor (FET) shows high carrier mobility and on/off ratio, which is related to stacking configuration. It is note that type I junction can form between the different structures and the obvious photocurrent observed are in the junction region. The 15.3° twisted BL-AB stacking MoS 2 Moiré superlattices with a period of 1.39 ± 0.05 nm. This work provides a reference for the development and application of multilayer-stacking MoS 2 .
研究领域:
材料科学
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物理化学
✓ 已验证
DOI
高影响因子
Journal of Chemistry
·
2020
·
IF 1.79
Jinghong Li,Lun Zhang,Di Wang,Ran Wang,Xiujuan Liu,Jingxin Zhou
Molybdenum disulfide (MoS2), as a kind of transition metal dichalcogenide, has been widely studied for its excellent compatibility with most of inorganic nanomaterials. Nevertheless, its microscale and agglomeration limit the performance severely. Therefore, the special structure of V-MoS2 has drawn a lot of interest, which can not only reduce the size of MoS2 nanosheets but also improve the valence electron structure of the materials. In this work, SrTiO3@MoS2 composite nanofibers were synthesized by the simple electrospinning and hydrothermal method, and it was applied as a novel material for photodetector. SEM, TEM, EDX, XRD, I-T curves, and EIS analysis were used to study the structure and properties of the prepared SrTiO3@MoS2 composite nanofibers. Simulating under sunlight at a potential of 1.23 V, the prepared composite materials exhibited a superior photoelectric performance of photocurrent density of 21.4 μA and a resistance of 2.3 Ω. These results indicate that the composite of SrTiO3 nanofiber adhered with V-MoS2 has a stable composite structure, good electrical conductivity, and photoelectric sensitivity and is a suitable material for photodetectors. This work provides new ideas for the preparation of self-assembled materials and their application in photodetectors.
研究领域:
材料科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 86
·54638-54643
·
IF 3.108
Yuhong Liu,Jinzha Zhang,Yang Shen,Jinduo Yan,Zaiying Hou,Chun Mao,Wenbo Zhao
Transition metal ions, such as those generated through MoS2 material, possess an intrinsic fluorescence quenching property towards organic dye molecules; thus, they can be used to construct biosensors as quenchers. However, we found that the conventional bulk MoS2 blocks the view of fluorescence imaging, and is incapable of tracing and visualizing mucin 1-overexpression cancer cells. Herein, a FAM fluorophore-labeled ssDNA fluorescent probe (P0-FAM) stacked on the surface of MoS2 quantum dots (QDs) was used to construct a MoS2 QDs–P0-FAM biosensor. MoS2 QDs exhibit a high fluorescence quenching ability towards fluorescent dyes, possess large specific surface area and a large number of active sites to adsorb and quench more fluorescent probes, promoting sensitivity between quenching and the recovery signal. In addition, the lighter color of unstack-MoS2 QDs is beneficial to define the location of cancer cells compared to MoS2 nanosheets. The novel MoS2 QDs-based biosensor demonstrates high sensitivity to MUC1 with a detection limit of 0.5 nM, and may become an important tool toward the detection of cancer cells.
研究领域:
生物化学
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纳米医学
·
分子诊断
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
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2022
·Vol. 32
·期 5
·2237-2248
·
IF 2.036
Liu Cansen,Zhen Haowen,Huang Qishan,Chen Wanlin,Mai Yongjin,Zhang Liuyan,Jie Xiaohua
The dispersity of incorporated particles is critical for the creation of composite coatings with enhanced performance. Here, we propose a mechanical agitation and ultrasound-assisted pulse electroplating technique for producing exfoliated MoS 2 reinforced cobalt-based composite coatings with improved tribological and electrochemical properties. The dispersity of exfoliated MoS 2 and its corresponding effect on the microstructure, microhardness, tribological and electrochemical behaviors of the resultant composite coatings are systematically investigated. The results reveal that the outstanding dispersity of exfoliated MoS 2 in electrolyte is beneficial to its even distribution and incorporation in the composite coating, endowing the resultant composite coatings with a smooth surface, compact structure, high hardness, remarkable antiwear and friction reduction performance as well as superior corrosion resistance. This study offers a strategy for producing high-performance composite coatings with promising practical applications. Graphical Abstract
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
Chinese Physics B
·
2023
·Vol. 32
·期 1
·017901
·
IF 1.7
Siwen You,Ziyi Shao,Xiao Guo,Junjie Jiang,Jinxin Liu,Kai Wang,Mingjun Li,Fangping Ouyang,Chuyun Deng,Fei Song,Jiatao Sun,Han Huang
Hybrid organic–inorganic perovskite thin films have attracted much attention in optoelectronic and information fields because of their intriguing properties. Due to quantum confinement effects, ultrathin films in nm scale usually show special properties. Here, we report on the growth of methylammonium lead iodide (MAPbI3) ultrathin films via co-deposition of PbI2 and CH3NH3I (MAI) on chemical-vapor-deposition-grown monolayer MoS2 as well as the corresponding photoluminescence (PL) properties at different growing stages. Atomic force microscopy and scanning electron microscopy measurements reveal the MoS2 tuned growth of MAPbI3 in a Stranski–Krastanov mode. PL and Kelvin probe force microscopy results confirm that MAPbI3/MoS2 heterostructures have a type-II energy level alignment at the interface. Temperaturedependent PL measurements on layered MAPbI3 (at the initial stage) and on MAPbI3 crystals in averaged size of 500 nm (at the later stage) show rather different temperature dependence as well as the phase transitions from tetragonal to orthorhombic at 120 and 150 K, respectively. Our findings are useful in fabricating MAPbI3/transition-metal dichalcogenide based innovative devices for wider optoelectronic applications.
研究领域:
材料科学
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光学
·
物理化学
✓ 已验证
DOI
高影响因子
Biomedical Materials
·
2024
·
IF 3.9
Chunsheng He,Zhisong Qiu,Feng Jin,Lifang Weng,Libin Chen,Lijuan Wang,Sicong Jiang,Jin Shi
This study presents a novel electrochemical immunosensor for the detection of pepsinogen I, a potential biomarker for gastric cancer, based on a PdAgPt/MoS2 nanocomposite. The nanocomposite was synthesized and characterized, demonstrating enhanced electron transfer properties and a large electroactive surface area. The optimized immunosensor exhibited a wide linear range of 0.5-200 ng/mL and a low detection limit of 0.167 ng/mL. The sensor showed excellent selectivity, with interfering substances exhibiting relative responses below 5%. Reproducibility tests yielded a relative standard deviation of 3.8%, and the sensor retained 95.6% of its initial response after 30 days of storage. Analysis of spiked serum samples resulted in recoveries ranging from 96.8% to 104.5%, demonstrating the sensor's potential for clinical applications in early gastric cancer detection.
研究领域:
医学诊断
·
生物传感
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2018
·
IF 11.698
Xue Bai,Yanyan Du,Xiaoyun Hu,Yudong He,Chunliang He,Enzhou Liu,Jun Fan
A novel RP-MoS 2 /rGO nanocomposite as low-cost, environmental sustanable, stability and high-performance photocatalyst was successfully fabricated for the first time through a facile two-step hydrothermal method. Even without a noble-metal cocatalyst, the introduction of MoS 2 /rGO hybrid made RP exhibit excellent photocatalytic performance, including photoreduction of Cr (VI) and photooxidation of different organic pollutants, owing to the increased number of excited electrons/holes and enhanced separation efficiency of charge carriers. Importantly, the synergy of photocatalytic reduction and oxidation, as well as photocatalysis and adsorption played an important role in enhancing photocatalytic activity and reaching a high efficiency. Besides, the chemical structure of the RP-MoS 2 /rGO with P–S and P O bands ensure the stability of the nanocomposite materials. Overall, the photocatalytic elimination of the Cr (VI)-Organic molecule coexistence system in this work shows promising application to treatment the reality wastewater.
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
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2021
·
IF 5.268
Pu Zhang,Wanqiang Xia,Ping Deng,Yuanhong Min,Juan Tan,Yi Wang,Wensheng Fu
Peroxidase-like activity of MoS 2 quantum dots (QDs) can be reversibly regulated by means of Fe 3+ /alendronate sodium (ALDS)-induced aggregation/disaggregation of the QDs in solution. Specifically, Fe 3+ can selectively aggregate the MoS 2 QDs and thus greatly enhance their peroxidase-like activity, while such enhancement can be inhibited in the presence of ALDS owing to the competitive coordination of ALDS with Fe 3+ . By regulating the enzyme-like activity of MoS 2 QDs, different colorimetric signal of a typical substrate of horseradish peroxidase , 3,3΄,5,5΄-tetramethylbenzidine, can be measured in the presence of H 2 O 2 . Based on this mechanism, we develop a colorimetric approach for the determination of ALDS and further applied in quality control of pharmaceutical products, utilizing either smartphone or UV–vis spectrometer as a readout. This detection method is rapid and selective, where derivatization of ALDS before detection is not needed. Such a smartphone-based colorimetric detection platform is promising to be applied in point-of-care testing at home, small clinics, or underdeveloped regions.
研究领域:
生物化学
·
医学诊断
·
材料科学
✓ 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）