Advanced Electronic Materials
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2018
·Vol. 5
·期 1
·1800548
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IF 5.466
Changzeng Yan,Tianhang Yu,Chao Ji,Dae Joon Kang,Ning Wang,Rong Sun,Ching-Ping Wong
Ever-increasing packaging and power densities of modern electronic devices in the present “More-than-Moore” technology era demand higher performance thermal interface materials (TIMs). However, conventional composite TIMs require higher loading to achieve better thermal conductive property, resulting in a mechanical problem. The poor wetting property of matrix loading materials further increases the interfacial thermal resistance (ITR). In this work, a one-step hydrothermal method is employed to grow 2D molybdenum disulfide (MoS 2 ) nanosheets on a tellurium (Te) nanowire skeleton and silver (Ag) nanoparticles are further decorated on MoS 2 nanosheets via the photoreduction method. The in-plane thermal conductivity of the final nanocomposite reaches as high as 10.4 W m −1 K −1 , which is 4,160% higher than that of a pure epoxy resin and one order of magnitude higher than that of conventional polymeric nanocomposites. The 3D interconnected heat transferring network of Te/MoS 2 /Ag greatly enhances the thermal stability of the composite in practical applications. The rational materials design concept may contribute to the development of new types of high-performance thermal management materials.
研究领域:
材料科学
·
热管理技术
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DOI
高影响因子
Applied Materials Today
·
2025
·
IF 6.9
Longfang Ren,Fangfang Dong,Xiaodong Gao,Sijie Yu,Taotao Qiang
The flexible ammonia sensor can detect the ammonia content in the air or the exhaled gas of humans, but the commonly used sensors have poor breathability and washability, so they are not suitable for direct contact with human skin. In this work, based on the excellent flexibility and permeability of nonwovens, UiO-66-NH 2 /MoS 2 @nonwoven (UMN) and UiO-66-NH 2 /MoS 2 /Ag@nonwoven (UMAN) gas sensors were prepared by loading self-prepared UiO-66-NH 2 /MoS 2 (UM) and UiO-66-NH 2 /MoS 2 /Ag (UMA) onto microfiber nonwovens. The results show that UMN and UMAN gas sensors exhibit high selectivity toward ammonia gas. The response values of UMN and UMAN demonstrate a consistent linear trend within the ammonia concentration range of 1–50 ppm and reach 43 % and 47 % at 1 ppm respectively. The response variations of the sensors before and after bending are below 4 %, demonstrating excellent bending stability. After washing for 24 h, the gas sensing performance shows nearly no change, indicating that they both have good reusability and washability. However, the sensors exhibit limited thermal and humidity stability. Given the challenges such as poor breathability and insufficient biocompatibility faced by traditional flexible gas sensors, UMN and UMAN sensors have emerged as highly promising alternatives with distinct advantages.
研究领域:
生物医学工程
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传感技术
·
纳米材料
·
呼吸健康监测
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柔性电子学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Zehao Wang,Xuejun Xu,Zhichun Si,Liping Liu,Yuxiang Liu,Yonghong He,Rui Ran,Duan Weng
MoS 2 /Ag 3 PO 4 heterojunction photocatalysts have attracted great attention in dye degradation and water oxidation, in which Z-scheme plays a critical role in the catalytic performance as a result of energy band structure alignment between MoS 2 and Ag 3 PO 4 . Creating metal sites at composite interfaces as recombination centers of photo-generated electrons from conduction band (CB) of Ag 3 PO 4 and holes from valence band (VB) of MoS 2 is an effective strategy to enhance the charge separation efficiency and photocatalytic performance. Strong coupled MoS 2 /Ag dots/Ag 3 PO 4 ternary heterojunction photocatalysts were fabricated by one-pot precipitation method, in which highly dispersed Ag dots are located at the MoS 2 /Ag 3 PO 4 interfaces and MoS 2 is bonded with PO 4 3- in the form of Mo-O-P. The fabricated MoS 2 /Ag dots/Ag 3 PO 4 photocatalyst presents a 2.8-fold enhancement of photocatalytic activity of water oxidation compared to that of pristine Ag 3 PO 4 , which is achieved for the first time. The great enhancement of photocatalytic performance can be ascribed to the improved Z scheme mechanism with strongly coupled MoS 2 /Ag dots/Ag 3 PO 4 ternary interfaces, in which highly dispersed Ag dots serve as efficient recombination centers resulting in the improved separation of photo-generated holes and electrons of Ag 3 PO 4 as well as photocatalytic activity of oxygen evolution.
研究领域:
材料科学
·
环境科学
·
光催化
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DOI
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Wenlong Liao,Juan Wu,Qian Long,Ying Zhu,Junling Shao,Yue Ma,Qiuzuo Shen,Huiming Li,Lingpu Jia,Kunping Liu
A MoS 2 @Ag nanoflower SERS substrate with 1T/2H mixed-phase is synthesized. • The prepared substrate achieving a high SERS enhancement factor of 1.76 × 10 8 . • The Transformer network achieved 99.82% classification accuracy for four antibiotics. Fluoroquinolone antibiotics (FQs) residues in dairy products pose a persistent challenge to food safety. This work establishes an integrated analytical platform combining a three-dimensional molybdenum disulfide‑silver nanoflower (MoS 2 @Ag NFs) SERS substrate with a transformer network based deep learning model for the sensitive detection and intelligent classification of FQs in milk. The prepared MoS 2 @Ag NFs substrate with a 1T/2H mixed-phase MoS 2 and a hierarchical structure densely decorated with silver nanoparticles (Ag NPs), exhibits a high enhancement factor and achieves nanomolar-level detection limits for four representative FQs. To overcome the discrimination challenge posed by the highly similar spectral signatures of different FQs, a transformer network is employed to automatically extract decisive spectral features via its self-attention mechanism, which results in an exceptional classification accuracy exceeding 99.82%. The integrated platform enables sensitive and intelligent monitoring of FQs in milk, providing a promising strategy for on-site detection of antibiotic residues in complex food matrices. Download: Download high-res image (125KB) Download: Download full-size image
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yaping Xing,Ting Wang,Xiaotian Wang,Zhiguo Liu,Zhengfeng Jia,Chuanyu Jin,Jinming Zhen,Ran Zhang
Although two-dimensional MoS 2 exhibits superior properties compared to the bulk, the significant agglomeration and poor conductivity limit the application in energy storage and conversion. In this paper, two-dimensional MoS₂ powders, synthesized using a straightforward ultrasonic method, are employed as the raw material and subsequently self-assembled into three-dimensional MoS₂ through the cross-linking action of dopamine (DA). Utilizing the reduction properties of DA, nano-silver (Ag) is successfully anchored within the layered structure of MoS 2 , which not only enhance conductivity of MoS 2 , but also improve structural stability. Finally, the mixed samples are carbonized to prepare a highly stable and conductive three-dimensional MoS 2 /Ag@C cathode material. In thermal batteries, MoS 2 /Ag@C cathode has a large specific energy of 404.74 Wh kg −1 at 50 mA cm −2 with a cut-off voltage of 1.35 V, which is higher than 26.70 Wh kg −1 of bulk MoS 2 and 107.76 Wh kg −1 of two-dimensional MoS 2 cathodes, respectively. Subsequent studies demonstrate that Ag and pyrolytic carbon enhance the structural stability of the electrode under high-temperature discharge conditions, but also inhibit the interfacial dissolution reaction between MoS 2 and molten salt, ultimately improving the discharge performances.
研究领域:
材料科学
·
能源存储与转换
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Ying Chen,Hongmei Liu,Yiran Tian,Yuanyuan Du,Yi Ma,Shuwen Zeng,Chenjie Gu,Tao Jiang,Jun Zhou
Pesticides, extensively used in agriculture production, have received enormous attention because of their potential threats to the environment and human health. Hence, in this study, a kind of highly sensitive and stable hybrid surface-enhanced Raman scattering (SERS)-active substrates constructed with flower-like two-dimensional molybdenum sulfide and Ag (MoS2@Ag) has been developed, and then the above substrate was sequentially utilized in the recyclable detection of pesticide residues on several kinds of fruits and vegetables. In the first place, the excellent photocatalytic performance of the MoS2@Ag hybrid substrate was demonstrated, which was attributed to the inhibition of electron–hole combination after the formation of Schottky barrier between the Ag NPs and MoS2 matrix. Thereafter, two calibration curves with ultra-low limits of detection (LOD) as 6.4 × 10–7 and 9.8 × 10–7 mg/mL were established for the standard solutions of thiram (tetramethylthiuram disulfide, TMTD) and methyl parathion (MP), and then the recyclable assay of their single and mixed residues on eggplant, Chinese cabbage, grape, and strawberry was successfully realized. It is interesting to note that the detection recoveries from 95.5 to 63.1% for TMTD and 92.3 to 62.6% for MP are greatly dependent on the size and surface roughness of these foods. In a word, the MoS2@Ag composite matrix shows attractive SERS and photocatalysis performance, and it is expected to have the potential application on food safety monitoring.
研究领域:
食品科学
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环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Tongwei Zhang,Huijie Qin,Lihong Bao,Mingkao Xu,Bo Dang,Jianxi Li
Two-dimensional molybdenum disulfide (MoS 2 ) nanosheets are seen as highly promising nanofillers for enhancing polymer properties, yet there is a need for methods that are low-cost, simple, and environmentally friendly to facilitate the large-scale production of MoS 2 nanosheets. Furthermore, it is necessary to functionalize the MoS 2 surface to ensure good interfacial compatibility with the polymer matrix. In this study, MoS 2 @Ag@PA hybrids were created by generating silver nanoparticles directly on the surface of MoS 2 via radiation, followed by encapsulation on the surface of MoS 2 @Ag through the chelating properties of phytic acid. It is significant to note that, due to the excellent lubrication and physical cross-linking effects of the MoS 2 @Ag@PA hybrids, adding one part of MoS 2 @Ag@PA hybrids can enhance the melt flow rate and elongation at break of the ethylene vinyl acetate copolymer (EVA)/MH composites by 140% and 17.3%, respectively. The simultaneous addition of one part of MoS 2 @Ag@PA hybrids decreased the peak heat release rate, total heat release, and total smoke release of the EVA composites by 48.7%, 42.7%, and 41.2%, respectively. Moreover, the toxic gasses (e.g., CO) generated by burning EVA composites were significantly reduced compared to pure EVA, indicating improved fire safety. This research not only provides significant opportunities for the green mass production of MoS 2 nanosheets but also expands their potential applications in high-performance nanocomposites.
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
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Hongrui Zhu,Chun Zhang,Kefeng Xie,Xingang Li,Guangfu Liao
Defect engineering, exposed crystal facets, and Z-scheme mechanism are promising strategies to greatly promote photocatalytic performance. Herein, the ZnFe 2 O 4 (ZFO) with Ag-doping, oxygen vacancies and different exposed crystal facets was firstly prepared by a facile hydrothermal strategy. Subsequently, the MoS 2 flowers were in-situ grown on the surface of the prepared Ag-doping ZFO (Ag-ZFO) for fabricating MoS 2 /Ag-ZFO Z-scheme heterojunction by hydrothermal strategy. Due to the synergistic effects of defect engineering (Ag-doping and oxygen vacancies), exposed crystal facets, and Z-scheme mechanism, the photocatalytic activity for tetracycline degradation was evidently improved. More importantly, the prepared MoS 2 /Ag-ZFO (T) also show excellent photocatalytic performance under real environment water. This work offers a new insight for future design and development of highly active photocatalysts.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Tao Xu,Rongyan Wang,Chenjie Gu,Tao Jiang
Surface-enhanced Raman scattering (SERS) technology enables to satisfy the increasing demand of clinical drug monitoring due to the superiority of fingerprint recognition, real-time response, and nondestructive collection. Here, a novel graphitic carbon nitride (g-C 3 N 4 )/ molybdenum disulfide (MoS 2 )/Ag composite substrate with a 3D surface structure was successfully developed for the recyclable detection of gefitinib in serum. Attributed to the uniform and dense “hotspots” on the shrubby active surfaces in conjunction with the potential synergistic chemical enhancement of g-C 3 N 4 /MoS 2 heterosystem, a remarkable SERS sensitivity with an attractive enhancement factor value of 3.3 × 10 7 was demonstrated. Meanwhile, a type-II heterojunction between g-C 3 N 4 and MoS 2 enabled more efficient diffusion of photogenerated e − -h + pairs assisted by the localized surface plasmon resonance of Ag NPs, which contributed to the reliable recyclable detection of gefitinib. The ultra-low limit of detection at 10 −5 mg/mL and high recycling rates of gefitinib beyond 90% in serum were successfully realized. The results demonstrated the as-prepared SERS substrate has tremendous potential to be untilized for in-situ drug diagnostics.
研究领域:
分析化学
·
材料科学
·
药学
·
生物医学工程
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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）