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
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Junjie Yang,Lei Liu
The friction influence of 2-D molybdenum disulfide (MoS 2 ) films deposited on different substrates (Si, SiO 2 and Al 2 O 3 ) by atomic layer deposition (ALD) has been investigated. All of the three substrates showed a trend of decreasing friction with increasing number of layers of MoS 2 , but the friction leveled off for more than 6 layers samples. Comparing these 2-D MoS 2 films with each other, MoS 2 on the Al 2 O 3 possesses the lowest friction, while MoS 2 on the Si possesses the highest one, owing to effect of substrate on the specific self-limiting reaction in ALD process. At the same time, the friction of the monolayer MoS 2 is strongest affected by sulfur deficient. As the number of layers increases, the influence of the substrate on the friction of MoS 2 can be approximately characterized by the work of adhesion. Greater work of adhesion corresponds to a higher friction force. When the thickness is more than 6 layers, the substrate effect disappears gradually. Moreover, the friction of 2-D MoS 2 could be controlled near linearly by changing plasma treatment time within the range from 1 to 20 s, which suggests a possible way for the friction control of 2-D MoS 2 on different substrate quasi-qualitatively or even qualitatively.
研究领域:
材料科学
·
纳米技术
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DOI
高影响因子
TRIBOLOGY LETTERS
·
2017
·Vol. 66
·期 1
·1-18
·
IF 1.891
Xin Yuanshi,Xu Fanglin,Wang Mingming,Li Tongsheng
Modified carbon nanotube/nano-MoS 2 (CMS) hybrid as a self-lubricating and anti-wear nanofiller was prepared through chemical compounding and then incorporated into polyimide (PI) matrix to yield CMS/PI composite by in situ polymerization. For comparison, carbon nanotube (CNT), nano-MoS 2 as well as the mixture of them (CNT-MoS 2 ) were also incorporated into PI matrix separately to evaluate the superior performance of CMS hybrid. Morphology, mechanical capacity and tribological behavior of the as-prepared nanocomposites were investigated, and the discrepancies on the above-mentioned properties caused by the different structures between CMS hybrid and CNT-MoS 2 mixture were discussed in detail. With only 0.5 wt% addition of CMS, the friction coefficient and wear rate of CMS/PI composite decreased by 31 and 84%, respectively, compared to virgin PI. The results showed that the combinational structure of CMS hybrid, as CNT-coated few-layer MoS 2 nanosheet, which took the advantage of both CNT and nano-MoS 2 , contributed to the synergistic effect on the tribological properties.
研究领域:
材料科学
·
摩擦学
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DOI
高影响因子
Theranostics
·
2019
·
IF 8.063
Lifang Yang,Jinping Wang,Shan Yang,Qianglan Lu,Peishan Li,Nan Li
Rod-shape nanoplatform have received tremendous attention owing to their enhanced ability for cell internalization and high capacity for drug loading. MoS 2 , widely used in electronic devices, electrocatalysis, sensor and energy-storage, has been studied as photothermal agents over the years. However, the efficacy of rod-shape MoS 2 based photothermal agents for photothermal therapy has not been studied before. Here, a near-infrared (NIR) light-absorbing MoS 2 nanosheets coated mesoporous silica nanorods with human serum albumin (HSA) modifying and Ce6 loading (MSNR@MoS 2 -HSA/Ce6) were constructed for combined photothermal and photodynamic therapy. Methods : The near-infrared (NIR) light was used to trigger the synergistic anti-tumor therapy. In addition, breast cancer cell line was applied to evaluate the in vitro anti-tumor activity. The multi-modal imaging capacity and tumor-killing efficiency of the designed nanocomposites in vivo was also demonstrated with the 4T1 tumor-bearing mouse model. Results : These nanocomposites could not only perform NIR light triggered photodynamic therapy (PDT) and photothermal therapy (PTT), but also achieve in vivo fluorescence (FL) /multispectral optical tomography (MSOT)/X-ray computed tomography (CT) triple-model bioimaging. What's more, the rod-shape nanoplatform could be endowed with better anti-tumor ability based on the EPR effect and HSA-mediated active tumor targeting. At the same time, the hyperthermia generated by MoS 2 could synergistically improve the PDT effect with the acceleration of the blood flow, leading to the increase of the oxygen level in tumor tissue. Conclusion : MSNR@MoS 2 -HSA/Ce6 proves to be a promising multi-functional nanoplatform for effective treatment of tumor.
研究领域:
生物医学工程
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纳米医学
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肿瘤学
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DOI
PubMed
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 64
·36616-36624
·
IF 2.936
Jixing Chai,Deqing Zhang,Junye Cheng,Yixuan Jia,Xuewei Ba,Ya Gao,Lei Zhu,Hao Wang,Maosheng Cao
Two-dimensional (2D) MoS2/graphene nanosheet (MoS2/GN) hybrids have been demonstrated to be promising microwave absorption (MA) materials due to their unique chemical and physical properties as well as rich impedance matching. However, the reported strategies for preparing MoS2/GN hybrids have limited their application potential due to the complex, high-cost and inefficient preparation processes. On the other hand, it is of note that the main source of graphene is based on converting insulating graphene oxides (GO) back to conductive reduced graphene oxides (RGO). Thus, the MA performance of obtained MoS2/RGO nanohybrids is greatly affected by the conversion process of GO. In this work, we prepared the MoS2/GN hybrids by a facile hydrothermal method with directly introducing highly pure and electroconductive GNs. It is found that the highest reflection loss value of the sample-wax containing 40% MoS2/GN is −57.31 dB at a thickness of 2.58 mm, and the bandwidth of RL values less than −10 dB can reach up to 12.28 GHz (from 5.72 to 18 GHz) when an appropriate absorber thickness between 1.5 and 4 mm is chosen. The excellent MA performances emanate from effective conjugation of MoS2 with GN (Mo–C bond between the interfaces), which provides the dielectric loss caused by multi-relaxation, conductance, and polarization. Taking into account the facile synthesis route and their excellent MA performance, the MoS2/GNs hybrid nanosheets and those composite materials with similar isomorphic hetero-structures are very promising for a wide range of MA applications.
研究领域:
材料科学
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电子工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Weibo Huang,Zhouyu Tong,Yuxin Bi,Mingliang Ma,Zijian Liao,Guanglei Wu,Yong Ma,Siyu Guo,Xiaoyu Jiang,Xueping Liu
Herein, coralloid core-shell structure NiS/Ni 3 S 4 @PPy@MoS 2 nanowires were elaborately designed and successfully synthesized through a three-step route to obtain exceptional microwave absorption (MA) properties. Ni nanowires were first fabricated, and then used as the substrate to be coated with a layer of PPy . Ni chalcogenides were obtained by using Ni nanowire as sacrificial templates while growing MoS 2 nanorods by hydrothermal method . Both the one-dimensional (1D) core-shell structure and the coralloid surface generated by MoS 2 nanorods were beneficial for the attenuation of microwaves. After investigating the electromagnetic properties of different loading content absorbers (30 wt.%, 40 wt.% and 50 wt.%), it is found that the 50 wt.% loading absorber has the optimal MA performance. The minimum reflection loss (RL min ) value can reach −51.29 dB at 10.1 GHz with a thickness of 2.29 mm, and the corresponding effective absorption bandwidth (EAB, RL < −10 dB) can be up to 3.24 GHz. This research provides a reference for exploiting novel high-efficient 1D absorbers in the field of MA.
研究领域:
材料科学
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电磁学
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DOI
高影响因子
INORGANIC CHEMISTRY
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2019
·
IF 4.85
Shikang Yin,Jinze Li,Linlin Sun,Xin Li,Dong Shen,Xianghai Song,Pengwei Huo,Huiqin Wang,Yongsheng Yan
Photocatalytic reduction of CO2 by semiconductors is of great significance in generating value-added fuels. Here, we construct a novel S–C–S heterojunction constituted of MoS2/SnS2/r-GO by a simple solvothermal method. The prepared MoS2/SnS2/r-GO showed significant photoexcitation of photosensitive oxygen (ROS) by electron spin resonance spectroscopy, demonstrating that superoxide radicals (•O2–), pores, and hydroxyl radicals (•OH) are the main active species. The constructed S–C–S heterojunction has a multilevel electron transport mechanism and synergistic effect, which provides the possibility of producing more organic fuel. The photocatalytic materials were characterized by XRD, XPS, SEM, TEM, PL, etc. As a result, the atomic layer MoS2/SnS2/r-GO heterojunction exhibited a CO formation rate of 68.53 μmol g–1 h–1 and a CH4 formation rate of 50.55 μmol g–1 h–1, respectively. This work opens up new prospects for the formation of heterojunctions of chalcogenide transition-metal sulfides.
研究领域:
材料科学
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环境科学
·
化学
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DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 3
·期 3
·1042-1048
·
IF 0
Zehong Cheng,Benzhao He,Li Zhou
Two dimensional MoS2 nanosheets decorated with inorganic nanoparticles (INPs) are emerging as novel MoS2-based nanohybrids for tuning the intrinsic attributes of both components for fundamental research and technological applications. However, the design and fabrication of MoS2–INP nanohybrids with a tailor-made structure and functions remain a significant challenge. Herein we report a general and controllable protocol for the one-step synthesis of various MoS2–INP nanohybrids by employing carboxylic MoS2 (MoS2–COOH) nanosheets as a versatile support. The obtained MoS2–INP nanohybrids exhibit good dispersibility, high reactivity and excellent processability. The size, morphology and coverage density of INPs on the surface of MoS2–COOH can be readily controlled by tuning the feed ratio. Control experiments reveal that the presence of carboxylic functional groups plays a key role in controlling the structure and properties of the resulting MoS2–INP nanohybrids. In addition, ternary MoS2-based nanohybrids can also be readily prepared by this approach, as exemplified by the synthesis of MoS2–Fe3O4/Pt nanohybrids, which simultaneously exhibit excellent catalytic performance toward the reduction of 4-nitrophenol and favorable magnetic separation capability. Considering the simple fabrication process, high controllability of this protocol and excellent performance of the product, the present work opens up enormous opportunities for the large-scale production of diverse MoS2-based nanohybrids for many technological applications.
研究领域:
材料科学
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纳米技术
·
化学工程
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DOI
NANOTECHNOLOGY
·
2020
·Vol. 32
·期 8
·085102
·
IF 3.551
Yujie Cai,Luyao Wang,Haolu Hu,Wei Bing,Limei Tian,Jie Zhao
Herein, we successfully developed a new multifunctional antibacterial system, which combined mechano-bactericidal (Au-nanostars) and photothermal (MoS2) mechanism. Meanwhile, the targeting molecule of vancomycin was modified on the surface of MoS2–Au nanocomposites (Van-MoS2–Au), that generally yield high efficiency in antibacterial performance due to their effective working radii. Van-MoS2–Au nanocomposites were capable of completely destroying both gram-negative (E. coli) and gram-positive (B. subtilis) bacteria under 808 NIR laser irradiation for 20 min, and nearly no bacterial growth was detected after 12 h incubation. Moreover, these nanocomposites could destruct the refractory biofilm as well, which was a much more difficult medical challenge. The new antibacterial nanomaterials might offer many biomedical applications because of the biocompatibility and strong antibacterial ability.
研究领域:
生物医学工程
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材料科学
·
抗菌研究
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DOI
高影响因子
Nanoscale Research Letters
·
2020
·Vol. 15
·期 1
·1-9
·
IF 3.578
Liu Hongdong,Lin Ye,Zhang Lei
To overcome the deficiency of the volume expansion of MoS 2 as the anode material for lithium-ion batteries (LIBs), an effective strategy was developed to design hierarchical porous MoS 2 /carbon nanospheres via a facile, easy-operated hydrothermal method followed by annealing. FESEM and TEM images clearly showed that nanospheres are composed of ultra-thin MoS 2 /C nanosheets coated with carbon layer and possess an expanded interlayer spacing of 0.98 nm. As anodes for LIBs, MoS 2 /carbon nanospheres deliver an initial discharge capacity of 1307.77 mAh g −1 at a current density of 0.1 A g −1 . Moreover, a reversible capacity of 612 mAh g −1 was obtained even at 2 A g −1 and a capacity retention of 439 mAh g −1 after 500 cycles at 1 A g −1 . The improved electrochemical performance is ascribed to the hierarchical porous structure as well as the intercalation of carbon into lattice spacing of MoS 2 , which offers fast channels for ion/electron transport, relieves the influence of volume change and increases electrical conductivity of electrode. Meanwhile, the expanded interlayer spacing of MoS 2 in MoS 2 /C can decrease the ion diffusion resistance and alleviate the volumetric expansion during discharge/charge cycles.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
CELLULOSE
·
2021
·Vol. 28
·期 10
·6513-6522
·
IF 5.044
Chen Siling,Li Jilong,Song Yiheng,Yang Quanling,Shi Zhuqun,Xiong Chuanxi
Flexible piezoelectric nanogenerators for energy harvesting are getting more and more attention nowadays by converting the mechanical energy to electric energy. Here, an environment-friendly piezoelectric nanogenerator based on the regenerated cellulose (RC)/MoS 2 nanosheet nanocomposite successfully exhibited a relative high output voltage of 2 V and current of 150 nA under slight press which were 5 and 7.5 times higher than those of the neat RC film, i.e. 0.4 V and 20 nA, respectively. In particular, the MoS 2 nanosheets were obtained through a simple, facile and low-cost pathway by mechanical exfoliation in triethanolamine. The nanocomposite film with MoS 2 nanosheets content of 4% exhibited a high piezoelectric constant ( d 33 ) of 19 pC/N, which was 6.3 times higher than that of the neat RC film ( i.e. 3 pC/N). Thus, the RC/MoS 2 piezoelectric nanogenerator has great potential applications in the fields of energy harvester, sensors and is of great significance to environment protection.
研究领域:
材料科学
·
能源技术
·
环境科学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Bao Jiang,Yanhui Niu,Xiuxin Jin,Yuntao Huang,Qin Hu,Yaxin Luo,Jialing Hua
Rational Interface Engineering: We successfully synthesized a GO/MoS 2 /TiO 2 ternary nanocomposite with carefully engineered heterojunction interfaces. This structure not only prevents the restacking of MoS 2 and aggregation of TiO 2 but also facilitates efficient charge separation and accelerates electron transfer rates compared to single or binary counterparts. • Significant Synergistic Enhancement: Rather than simply mixing components, our design yields a substantial improvement in electrochemical performance. The sensor exhibits a 2-fold increase in current response and a significantly lower detection limit compared to the individual MoS 2 electrodes. This result strongly validates the effectiveness of our interface engineering strategy in overcoming the intrinsic limitations of single-component materials. • Self-Cleaning and Anti-Fouling Capability: A distinct advantage of our ternary system is its excellent anti-fouling property. The incorporation of TiO 2 endows the sensor with self-cleaning capabilities (attributed to its photocatalytic activity/surface properties), effectively mitigating electrode passivation caused by the adsorption of oxidation products. This ensures superior operational stability and reproducibility, addressing a common bottleneck in APAP detection. • Practical Robustness: We successfully applied the sensor to the determination of acetaminophen in real pharmaceutical tablets and water samples with satisfactory recovery rates, proving its potential for practical applications in complex matrices. Efficient detection of acetaminophen (APAP) is critical for public health and environmental safety, but traditional electrochemical sensors often suffer from severe electrode passivation and ambiguous interfacial sensing mechanisms.To address these challenges, To address these fundamental challenges, this study constructs a novel photo-assisted electrochemical platform based on a GO/MoS 2 /TiO 2 ternary heterojunction, systematically characterized via XRD, TEM, FTIR, and XPS. Explicitly shifting the focus from conventional metric-chasing (e.g., pursuing extreme detection limits) to rational material design, this work thoroughly elucidates the structure–activity relationship and underlying synergistic mechanisms through comprehensive kinetic investigations (e.g., CV, EIS, and DPV). Experimental results demonstrate that the strategically designed cascaded band structure significantly boosts electrocatalytic activity and interfacial charge transfer. Furthermore, by leveraging the distinct structural advantages of the distinct structural advantages of GO/MoS 2 alongside the photo-assisted properties of TiO 2 , the sensor achieves a dual-mode “anti-fouling and self-cleaning” capability that effectively resolves surface fouling caused by oxidation products. Consequently, the sensor exhibits robust performance with a detection limit of 0.07 µM (S/N = 3) and three wide linear response ranges (7.865∼12.155 µM, 12.155∼71.5 µM and 71.5∼715 µM). Ultimately, this systematic study provides not only a robust platform for real-world APAP monitoring but also a theoretical blueprint for designing next-generation, passivation-resistant sensing interfaces. A photo-assisted GO/MoS 2 /TiO 2 ternary heterojunction sensor was constructed for ultrasensitive electrochemical detection of acetaminophen with enhanced charge transfer and excellent anti-fouling performance.(This graphical abstract was generated using AI tools) Download: Download high-res image (252KB) Download: Download full-size image
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DOI
高影响因子
危险品化学品经营许可证（带存储）