Journal of Materials Research and Technology-JMR&T
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2022
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IF 6.267
Fengjuan Miao,Bingcheng Sun,Bairui Tao,Yanchun Wang,Paul K. Chu
In this paper, we demonstrate the application of a novel ternary nanocomposite MoS 2 /Ag/TiO 2 photoanode in high efficiency plasma dye sensitive solar cell (PDSSC). Ternary nanocomposites MoS 2 /Ag/TiO 2 was successfully synthesized by a simple solvothermal method without any hazardous substances. In order to achieve higher photoelectric conversion efficiency of DSSC, the photoanode’s ability of capturing light and electron transfer rates needs to be improved. Ag provides a power for light capture, while MoS 2 inhibits electron–hole recombination and promotes electron transport in the ternary nano-composite MoS 2 /Ag/TiO 2 . The nanocomposite was characterized by scanning electron microscope and transmission electronmicroscope, which indicated that the MoS 2 /Ag/TiO 2 was synthesized. Due to local surface plasmon resonance (LSPR), silver nanoparticles were doped onto TiO 2 nanoparticles, which greatly improved the optical parameters. The synthesis of Ag nanoparticles and MoS 2 was confirmed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The performance of dye sensitive solar cell (DSSC) composed of ternary nano-composite material MoS 2 /Ag/TiO 2 was tested, the photoelectric conversion efficiency (PCE) reaches 9.3%, which is 26% higher than that of pure TiO 2 nanoparticle photoanode.
研究领域:
材料科学
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能源科学
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光化学
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DOI
高影响因子
CHEMOSPHERE
·
2019
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IF 5.108
Ying Zeng,Na Guo,Xingjian Xu,Yong Yu,Quanying Wang,Na Wang,Xuerong Han,Hongwen Yu
WO 3 @MoS 2 /Ag (HW@MA) hollow tubes were successfully engineered to photodegrade bisphenol A (BPA) combined with peroxymonosulfate (PMS) for the first time. XRD, XPS, TEM and SEM were conducted. The HW@MA tubes present excellent photocatalytic performance on the removal of BPA. The intermediate products of BPA were investigated by GC-MS analysis and the degradation pathway was proposed. To explore the transferred mechanism of photoproduced carriers, the electron paramagnetic resonance (EPR) technique was carried out. The results revealed that the superoxide radical ( O 2 − ), hydroxyl radical ( OH), sulfate radical ( SO 4 − ) were the main active radicals. Moreover, the formed schottky junctions enhanced the separation efficiency of photoinduced electron-hole pairs. Besides, the effect of the photocatalysts’ dosage, PMS concentration, pH of the initial solution and co-existing anions on the BPA degradation were investigated.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
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2020
·Vol. 22
·期 9
·1-11
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IF 2.132
Lin Jiaxin,Mei Qianwen,Duan Yingchun,Yu Chenhong,Ding Yaping,Li Li
The sensitive determination of VB 2 has broad analytical applications. In this work, a novel VB 2 electrochemical sensor based on the hydrothermal method was constructed to uniformly grow molybdenum disulfide and silver nanoparticles on the surface of electrospun carbon fiber. MoS 2 -Ag-CNF was characterized by scanning electron microscope, EDS spectrum, TEM analysis, cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy. The sensor exhibited a high sensitivity of 0.05 to 40 μΜ with a fast response time and a low detection limit of 0.02 μM. The electrode also showed outstanding selectivity toward various interferences. These results indicate that the MoS 2 -Ag-CNF nanocomposites may be promising electrode materials for electrochemical biosensing.
Graphical abstract
研究领域:
分析化学
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生物医学工程
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
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IF 3.5
Zhang Tongwei,Qin Huijie,Bao Lihong,Dang Bo,Li Jianxi
This paper introduces a novel hybrid material, MoS 2 @Ag@PA, with a core–shell structure aimed at improving the fire safety and critical properties of ethylene vinyl acetate (EVA). The incorporation of 2% of this hybrid material results in a remarkable enhancement in both thermal conductivity and tensile strength of EVA composites, increasing by 52.4% and 22.6%, respectively. Furthermore, the inclusion of 2% of this material leads to a significant reduction in the peak of heat release rate, total heat release, and total smoke production of the EVA composites by 36.2%, 28.1%, and 29.7%, respectively, compared to pure EVA. This indicates a substantial improvement in fire safety, mechanical properties, and thermal conductivity of the EVA composites. The enhanced flame retardancy of the EVA composites is primarily attributed to the synergistic effect of various substances within the hybrid material. Therefore, the design of these hybrids presents a promising approach to enhance the overall performance of EVA.
研究领域:
材料科学
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火灾安全工程
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2024
·
IF 7.1
Jiaxin Liu,Mingdi Pan,Jiuzeng Jin,Yunshu Lu,Zhongmin Feng,Ting Sun
17β-E2 was the most active sterol estrogen and was widely used in animal husbandry for animal fattening and increasing milk production. Its abuse has resulted in residues in the environment. However, even very low concentrations could still enter the human body through the enrichment of the food chain and have adverse effects on the endocrine system. The SERS analysis method was employed in this work for the trace detection of 17β-E2 in environmental water. Cheap Ag NPs were selected as SERS sources. MoS2 provided a platform for the orderly arrangement of Ag NPs while making the material self-cleaning. rGO was coated in the outermost layer and had a protective effect on Ag NPs and could avoid oxidation during storage and use. At the same time, the target molecule could be adsorbed to reduce the distance between itself and Ag NPs, thus enhancing the SERS signal. The material had a high SERS enhancement factor (EF = 1.95 × 107), low detection limit (LOD = 5 × 10–12 M), good linear relationship (R2 = 0.994), good stability (RSD = 4.74%), and strong anti-interference ability. The recovery of 17β-E2 in farm wastewater samples was 100.15–108.00% and RSDs were 1.09–2.57%.
研究领域:
环境科学
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分析化学
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生物医学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2024
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IF 2.7
Huijie Qin,Tongwei Zhang,Lihong Bao,Bo Dang,Jianxi Li
Two-dimensional molybdenum disulfide (MoS 2 ) nanosheets are promising nanofillers for improving the properties of polymers, but low-cost, facile and green methods need to be further explored to meet the requirements for large-scale production of modified MoS 2 nanosheets. Here, we developed a new idea that is, to prepare MoS 2 @Ag by modifying the surface of MoS 2 using radiative reduction. It is noteworthy that the modified MoS 2 @Ag can effectively improve the mechanical strength of ethylene-vinyl acetate (EVA) composites. In addition, the addition of MoS 2 @Ag was able to substantially improve the flame-retardant properties of EVA, resulting in a significant reduction in the amount of heat and smoke released from its combustion. When two parts of MoS 2 @Ag were added, the peak heat release rate and total smoke release of EVA/2.0MoS 2 @Ag composites were reduced by 29.7% and 39.2%, respectively, compared with that of pure EVA. At the same time, the toxic gases (e.g., CO) produced by the combustion of EVA composites were significantly reduced, which indicates an improvement in their fire safety.
研究领域:
材料科学
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纳米技术
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聚合物工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2020
·
IF 10.652
Feng Wei,Xinyu Cui,Zhao Wang,Changchang Dong,Jiadong Li,Xiaojun Han
Antibacterial agents with enzyme-like properties and bacteria-binding ability have provided an alternative method to efficiently disinfect drug-resistance microorganism. Herein, a Fe 3 O 4 @MoS 2 -Ag nanozyme with defect-rich rough surface was constructed by a simple hydrothermal method and in-situ photodeposition of Ag nanoparticles. The nanozyme exhibited good antibacterial performance against E. coli (~69.4%) by the generated ROS and released Ag + , while the nanozyme could further achieve an excellent synergistic disinfection (~100%) by combining with the near-infrared photothermal property of Fe 3 O 4 @MoS 2 -Ag. The antibacterial mechanism study showed that the antibacterial process was determined by the collaborative work of peroxidase-like activity, photothermal effect and leakage of Ag + . The defect-rich rough surface of MoS 2 layers facilitated the capture of bacteria, which enhanced the accurate and rapid attack of OH and Ag + to the membrane of E. coli with the assistance of local hyperthermia. This method showed broad-spectrum antibacterial performance against Gram-negative bacteria, Gram-positive bacteria, drug-resistant bacteria and fungal bacteria. Meanwhile, the magnetism of Fe 3 O 4 was used to recycle the nanozyme. This work showed great potential of engineered nanozymes for efficient disinfection treatment.
研究领域:
生物医学工程
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微生物学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Frontiers in Chemistry
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2023
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IF 5.5
Chen Huiying,Zhao Xinshuo,Cui Bingbing,Cui Haohao,Zhao Mengyang,Shi Jun,Li Jingguo,Zhou Zhan
Pathogenic microbial infections have been threatening public health all over the world, which makes it highly desirable to develop an antibiotics-free material for bacterial infection. In this paper, molybdenum disulfide (MoS2) nanosheets loaded with silver nanoparticles (Ag NPs) were constructed to inactive bacteria rapidly and efficiently in a short period under a near infrared (NIR) laser (660 nm) in the presence of H2O2. The designed material presented favorable features of peroxidase-like ability and photodynamic property, which endowed it with fascinating antimicrobial capacity. Compared with free MoS2 nanosheets, the MoS2/Ag nanosheets (denoted as MoS2/Ag NSs) exhibited better antibacterial performance against Staphylococcus aureus by the generated reactive oxygen species (ROS) from both peroxidase-like catalysis and photodynamic, and the antibacterial efficiency of MoS2/Ag NSs could be further improved by increasing the amount of Ag. Results from cell culture tests proved that MoS2/Ag3 nanosheets had a negligible impact on cell growth. This work provided new insight into a promising method for eliminating bacteria without using antibiotics, and could serve as a candidate strategy for efficient disinfection to treat other bacterial infections.
研究领域:
材料科学
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生物医学工程
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微生物学
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DOI
PubMed
高影响因子
NANOTECHNOLOGY
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2020
·Vol. 31
·期 12
·125101
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IF 3.551
Jingchen Li,Jie Zheng,Yadong Yu,Zhen Su,Lihui Zhang,Xiaojun Chen
The abuse of antibiotics has led to the emergence of numerous super resistant bacteria, which pose a serious threat to public health. Developing nanomaterials with novel modes of bactericidal activity offers the promise of fighting pathogens without the risk of causing drug resistances. Here, we used reduced graphene oxide (rGO), bulk molybdenum disulfide (MoS2) and silver nitrate (AgNO3) to synthesize a ternary nanocomposite, rGO–MoS2–Ag, via a simple one-pot method. The resulting rGO–MoS2–Ag presented as crumpled and sheet-like structures decorated with Ag nanoparticles. The minimum inhibitory concentration and minimum bactericidal concentration of rGO–MoS2–Ag against Escherichia coli were 50 and 100 μg ml−1, while Staphylococcus aureus reacted only to twice higher concentrations of 100 and 200 μg ml−1, respectively. Notably, rGO–MoS2–Ag exhibited better antibacterial activity towards E. coli and S. aureus than rGO, MoS2, or rGO–MoS2. This result can be attributed to the excellent performance of rGO–MoS2–Ag in destroying the bacterial cell membrane and inducing the generation of reactive oxygen species. The Ag+ ion release of rGO–MoS2–Ag was delayed, endowing the nanocomposite with long-term antibacterial capabilities and better biosafety. Our results indicate that the as-prepared rGO–MoS2–Ag has promising potential for application in biomedicine and public health.
研究领域:
材料科学
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纳米技术
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生物医学工程
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微生物学
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2024
·
IF 6.3
Jiawei Wang,Ruirui Qiang,Qiaowei Miao,Ruiling Hu,Huihui Chen,Shaobo Guo,Zhifeng Liu
With antibiotic resistance on the rise due to misuse, the urgent need for new antibacterial materials has become paramount in global health. Herein, a CuFe 2 O 4 /MoS 2 (CFM) composite with a large specific surface area was synthesized through a simple hydrothermal method and physical adsorption, and the subsequent loading of silver nanoparticles (Ag NPs) onto its surface yielded the nanocomposite CuFe 2 O 4 /MoS 2 @Ag (CFMA) with a rough defect-rich surface. The nanocomposite demonstrates remarkable antibacterial activity against Escherichia coli , Staphylococcus aureus , and drug-resistant Salmonella ( T-Salmonella ) by releasing metal ions that alter the electrical potential of bacterial cell membranes, compromise the integrity of cell membranes, and produce reactive oxygen species that lead to oxidative stress. It thus achieves an antibacterial rate of 96 % against the three tested bacterial strains within just 20 min at a concentration of 200 μg/mL. The composite exhibits a broad-spectrum antibacterial effect against Gram-negative and Gram-positive bacteria, as well as drug-resistant bacteria. Moreover, CFM acts as a carrier that effectively prevents the aggregation of Ag NPs, and the magnetism of CuFe 2 O 4 facilitates the recovery of the antibacterial agent. This work provides new ideas and methods for the development of highly efficient, cost-effective, and biocompatible antibacterial materials.
研究领域:
材料科学
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微生物学
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生物医学工程
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产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2026
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IF 5.2
Qinqin Qian,Haocheng He,Songyin Fu,Jia Xu,Ho-Pui Ho,Shuwen Zeng,Tao Jiang,Sheqin Lv,Chenjie Gu
The efficient and sensitive monitoring of the interleukin-6 (IL-6) is crucial for the clinical tracking and diagnosis of chronic obstructive pulmonary disease (COPD). Herein, a novel surface-enhanced Raman scattering substrate (RGO@MoS 2 /Ag NPs), comprising an efficient charge-transfer and adsorption layer of reduced graphene oxide (GO) encapsulated in molybdenum disulfide (MoS 2 ) and an electromagnetic enhancement layer of Ag nanoparticles, was developed for the highly sensitive, label-free detection of IL-6. Experimentally, a precursor film consisting of (NH 4 ) 2 MoS 4 and GO was first deposited onto a rough g -C 3 N 4 substrate via spin-coating process. Subsequently, the above precursor film was subjected to a two-step high-temperature annealing process for preparing the RGO@MoS 2 charge transfer layer. Finally, Ag NPs were sputtered onto the RGO@MoS 2 film to induce the localized surface plasmons for the further enhancement of the SERS performance. Leveraging the high specific surface area and exceptional charge transfer properties of RGO@MoS 2 , together with the high-density “hot spots” generated by surface Ag NPs, the fabricated SERS substrate exhibited remarkable electromagnetic and chemical enhancement effects. By using the rhodamine 6G (R6G) as the Raman reporter, it was determined that the lowest detection limit could be as low as 10 −9 M on the optimal SERS substrate, with an enhancement factor of 2.2 × 10 9 . Meanwhile, the substrate also exhibited good uniformity, with a relative standard deviation of 9.84%. Finally, the prepared SERS substrate was used to detect the IL-6, it showed good linear response in the range of 5.0-1000 pg/mL, with a detection limit as low as 0.41 pg/mL.
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Ying Chen,Hongmei Liu,Xiuting Li,Shiwei Tang,Chenjie Gu,Guodong Wei,Tao Jiang,Xingfei Zhou
Molybdenum disulfide (MoS 2 ) with promising photocatalytic activity has attracted great attention in constructing recyclable SERS substrate. Reduced graphene oxide (RGO) was chose here to in-situ grow MoS 2 nanoflowers and effectively adjust the active area of the substrate. After the decoration of Ag nanoparticles by photo-reduction, a sophisticated RGO@MoS 2 @Ag ternary nanocomposite with a maximizing SERS enhancement factor (EF) of 8.6 × 10 6 and a prominent solar photocatalytic efficiency was demonstrated. Such superior features of the nanocomposite were revealed to be endowed by the synergistic effect of the three components including the active sites of MoS 2 , the “Schottky barrier” and “hot spots” between MoS 2 and Ag, together with the molecular enrichment surface and chemical enhancement ability of RGO . An ultra-sensitive SERS-based detection and a reliable photocatalytic degradation of mixed trace molecules were finally achieved by the developed optimal ternary nanocomposite, which can meet manifold requirements for the routine supervision of biochemical molecules.
研究领域:
材料科学
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分析化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）