ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Hongmei Li,Xing Qian,Chong Xu,Shaowei Huang,Changli Zhu,Xiancai Jiang,Li Shao,Linxi Hou
The development of highly active and stable earth-abundant electrocatalysts to reduce or eliminate the reliance on noble-metal based ones for hydrogen evolution reaction (HER) over a broad pH range remains a great challenge. Herein, hierarchical porous Co9S8/N-doped carbon@MoS2 (Co9S8/NC@MoS2) polyhedrons have been synthesized by a facile hydrothermal approach using highly conductive Co/NC polyhedrons composed of cobalt nanoparticles embedded in N-doped carbon matrices as both the structural support and cobalt source. The Co/NC polyhedrons were prepared by direct carbonization of Co-based zeolitic imidazolate framework (ZIF-67) in Ar atmosphere. Benefiting from the prominent synergistic effect of N-doped carbon enhancing the conductivity of the hybrid, MoS2 and Co9S8 providing abundant catalytically active sites as well as the well-defined polyhedral structure promoting mechanical stability, the as-synthesized Co9S8/NC@MoS2 shows excellent HER activity and good stability over a broad pH range, with onset overpotentials of 4, 38, and 45 mV, Tafel slopes of 60.3, 68.8, and 126.1 mV dec–1, and overpotentials of 67, 117, and 261 mV at 10 mA cm–2 in 1.0 M KOH, 0.5 M H2SO4, and 1.0 M phosphate buffer solution (PBS), respectively. This work provides a general and promising approach for the design and synthesis of inexpensive and efficient pH-universal HER electrocatalysts.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2017
·
IF 7.78
Zengqiang Gao,Yueyun Li,Xiaobo Zhang,Jinhui Feng,Ling Kong,Ping Wang,Zhiwei Chen,Yunhui Dong,Qin Wei
A sensitive sandwich-type electrochemical immunosensor for the detection of hepatitis B e antigen (HBeAg) was successfully developed based on the gold@palladium nanoparticles (Au@Pd NPs) loaded by molybdenum disulfide functionalized multiwalled carbon nanotubes (Au@Pd/MoS 2 @MWCNTs). The resultant nanocomposites not only possessed high specific surface area and good biocompatibility , but also exhibited excellent electro-catalytical property. Au NPs functionalized porous graphene oxide (p-GO@Au) were used as sensing platforms and primary antibodies carriers, which can accelerate the electron transfer and improve the load capacity of primary antibodies (Ab 1 ), improving the sensitivity of the immunosensor. Under optimal conditions, the designed immunosensor could detect target HBeAg concentration in the range from 0.1pg/mL to 500 pg/mL, with a low detection limit of 26 fg/mL (S/N = 3) for HBeAg. Additionally, the designed immunosensor showed excellent specificity, good reproducibility and acceptable stability. The satisfactory results in analysis of human serum samples indicated that it had potential application in clinical monitoring of tumor markers.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
·
2024
·
IF 12.7
Yonglei Liu,Fengyuan Wang,Yahui Wang,Bo Hu,Ping Xu,Xijiang Han,Yunchen Du
Rational design of profitable structure is widely considered as an effective strategy for electromagnetic wave absorbing materials (EWAMs) to improve their performance. Herein, we conduct a combined engineering of hollow and core-shell structures, in which surface shell is formed by a number of MoS 2 nanosheets crossing each other and internal core is hollow carbon microcapsule (HC). HC has strong dielectric loss ability, and its hollow structure facilitates the multiple reflection of incident EM wave. The construction of MoS 2 shells not only improves impedance matching but also introduces heterogeneous interfaces that result in interfacial polarization loss. It is found that the synergistic effect of intrinsic loss mechanisms and structural advantages endow C@MoS 2 composites (HCM- x ) with excellent EM wave absorption performance, and especially for HCM-2, whose minimum reflection loss (RL) intensity and effective absorption bandwidth (EAB) are −63.8 dB and 6.0 GHz, respectively. It is believed that this work is valuable for the enhancement of performance for EWAMs through the upgrade of microstructure and regulation of chemical composition.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ORGANOMETALLIC CHEMISTRY
·
2024
·
IF 2.1
Haoyuan Zheng,Qianyuan Mo,LiJing Song,Xi Zhang,Jie Huang,Guishang Sheng
Co-MoS 2 @BC catalysts were prepared using pine cones as biochar source, and the surface morphology and microstructure of the catalysts were analyzed and the successful preparation of the materials was verified by adopting the characterization means such as BET, SEM, XRD, FTIR, TEM, XPS, Raman. At the concentration of tetracycline (TC) in water of 20 mg/L, the reaction system with catalyst participation resulted in 98.88 % pollutant removal and efficient degradation, and the effects of TC concentration, coexisting chemicals, initial pH, catalyst dosage, PMS dosage, and other factors on the catalytic performance of Co-MoS 2 @BC were investigated. The results of quenching experiments and electron paramagnetic resonance (EPR) examinations were combined, the reactive substances whose main roles in the reaction process were identified as single linear oxygen ( 1 O 2 ), and the simultaneous presence of electron transfer-mediated non-radical pathways in the Co-MoS 2 @BC/PMS/TC system was confirmed using Linear sweep voltammetry (LSV). The reaction process's intermediates were examined using liquid chromatography-mass spectrometry (LC-MS), which also offered potential degradation routes.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xiaolong Li,Jundi Wan,Yulu Tang,Chenyu Wang,Yahui Zhang,Dongjun Lv,Mingyuan Guo,Yongning Ma,Yuhao Yang
Navigating more effective methods to enhance the photon utilization of photodetectors poses a significant challenge. This study initially investigates the impact of morphological alterations in 2H-MoS2 on photodetector (PD) performance. The results reveal that compared to layered MoS2 (MoS2 NLs), MoS2 nanotubes (MoS2 NTs) impart a cavity enhancement effect through multiple light reflections. This structural feature significantly enhances the photodetection performance of the MoS2-based PDs. We further employ the heterojunction strategy to construct Y-TiOPc NPs:MoS2 NTs, utilizing Y-TiOPc NPs (Y-type titanylphthalocyanine) as the vis–NIR photosensitizer and MoS2 NTs as the photon absorption enhancer. This approach not only addresses the weak absorption of MoS2 NTs in the near-infrared region but also enhances carrier generation, separation, and transport efficiency. Additionally, the band bending phenomenon induced by trapped-electrons at the interface between ITO and the photoactive layer significantly enhances the hole tunneling injection capability from the external circuit. By leveraging the synergistic effects of the aforementioned strategies, the PD based on Y-TiOPc NPs:MoS2 NTs (Y:MT-PD) exhibits superior photodetection performance in the wavelength range of 365–940 nm compared to MoS2 NLs-based PD and MoS2 NTs-based PD. Particularly noteworthy are the peak values of key metrics for Y:MT-PD, such as EQE, R, and D* that are 4947.6%, 20588 mA/W, and 1.94 × 1012 Jones, respectively. The multiperiod time-resolved photocurrent response curves of Y:MT-PD also surpass those of the other two PDs, displaying rapid, stable, and reproducible responses across all wavelengths. This study provides valuable insights for the further development of photoactive materials with a high photon utilization efficiency.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
AICHE JOURNAL
·
2024
·
IF 3.5
Shuhuan Han,Zhengxuan Shao,Xiuhui Li,Jiwen Fu,Xiaofei Zeng
MoS 2 has been considered as a potential replacement for Pt-based catalysts in hydrogen evolution reaction. But the lack of sufficient active sites limits the intrinsic activity of MoS 2 -based catalysts. Here, we propose a general strategy to synthesize ultra-small MoS 2 nanosheets grown evenly on carbon substrates to maximize the active sites by exposing more edge positions and inducing MoS 2 phase transition. It is found that Ru can assist MoS 2 to grow vertically and uniformly on the surface of carbon substrates by in situ derivatization to improve the catalytic activity effectively. MoS 2 nanosheets on the substrates are much smaller and denser than those prepared without Ru or with other metal elements. Electrocatalysis results revealed that the number of active sites and conductivity of the optimized Ru-MoS 2 @CSs increase obviously, and the overpotential at 10 mA cm −2 is much lower than that of MoS 2 @CSs and metal (Co, Ni)-MoS 2 @CSs, respectively, at 1.0 M KOH.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jiankang Liu,Yong Qian,Guo-Hua Hu,Xueqing Qiu,Zhixian Li
Photothermal synergistic antibacterial therapy has emerged as a compelling approach for addressing antibiotic-resistant infections. In this study, lignosulfonate (LS) served dual roles as both a scaffolding template and a functional modifier in the fabrication of the lignin-polyaniline composite (LS-PANI). Subsequently, molybdenum disulfide (MoS 2 ) was integrated into LS-PANI through physical adsorption, resulting in the formation of MoS 2 @LS-PANI. The bactericidal assays demonstrated that MoS 2 @LS-PANI, at a concentration of 400 μg/mL, achieved a sterilization rate of 99.9 % against Escherichia coli and Staphylococcus aureus when exposed to near-infrared (NIR) radiation (808 nm, 1.8 W/cm 2 ) for only 5 min in the presence of H 2 O 2 . Moreover, MoS 2 @LS-PANI disrupts bacterial membranes through physical contact while converting NIR energy into local heat and enhancing peroxidase-like activity, synergistically amplifying oxidative stress for effective pathogen elimination. The low-cost, facile synthesis and eco-friendly nature of MoS 2 @LS-PANI underscore its potential as an innovative approach in the development of lignin-derived inorganic nanocomposites for the highly efficient eradication of pathogenic bacteria.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2015
·
IF 5.056
Jinchao Li,Yaping Zhang,Shuai Zhang,Xiaodong Huang
We report the fabrication and properties of high performance and inexpensive composite membranes of sulfonated polyimide (SPI) and sulfonated molybdenum disulfide (s-MoS 2 ) for the vanadium redox flow battery (VRFB) application. Scanning electron microscopy (SEM) images reveal the uniformity of SPI/s-MoS 2 membrane. Both EDS and XRD results verify the existence of s-MoS 2 in SPI/s-MoS 2 membrane and show the interaction between SPI and s-MoS 2 . The physico-chemical properties of as-prepared SPI/s-MoS 2 membrane, including water uptake and ion exchange capacity, etc. are evaluated and compared to those of SPI, SPI/MoS 2 and Nafion 117 membranes, respectively. The SPI/s-MoS 2 membrane possesses increased proton conductivity and reduced vanadium ion permeability than pure SPI membrane, and it has the highest proton selectivity (2.24×10 5 S min cm −3 ) among all membranes. The VRFB with SPI/s-MoS 2 membrane presents a higher coulombic efficiency ( CE ) and energy efficiency ( EE ) compared with Nafion 117 at the current density ranging from 20 to 80 mA cm −2 . The SPI/s-MoS 2 membrane shows a longer discharge time (193 h above 0.8 V) than Nafion 117 (72 h). Moreover, the SPI/s-MoS 2 membrane exhibits stable operation performance up to 500 cycles with no significant decline in CE and EE . All experimental results confirm that the SPI/s-MoS 2 membrane is suitable for use in VRFB.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Zhaojie Wang,Ming Liu,Guijuan Wei,Peng Han,Xixia Zhao,Junxue Liu,Yan Zhou,Jun Zhang
The requirements of high power density, excellent cycling ability, flexibility and low cost, are of paramount importance and critical to develop flexible lithium ion batteries (LIBs) for wearable instruments. Here we reported the rational design and fabrication of a flexible self-supported lithium ion anode material, which consists of thin MoS 2 nanosheets grown on the surfaces of carbon@TiO 2 core-shell nanofibers. The resulting hierarchical ternary nanocomposites exhibited high reversible specific capacity (∼1460 mA h g −1 at 100 mA g −1 ), excellent cyclability (little capacity loss even after 1000 cycles) and rate performance (928 mA h g −1 at 2 A g −1 ) as anode in LIB. Furthermore, the binder-free anode material demonstrated new opportunities for flexible lithium ion batteries. The superior lithium storage performance is derived from the present well-designed hierarchical nanofiber structure and the synergic effect of different components and numerous interfaces.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
Xiao Cui,Xinli Chen,Susu Chen,Fanli Jia,Shihe Yang,Zhang Lin,Zhenqing Shi,Hong Deng
The application of MoS 2 in renewable energy-storage has been hampered by its low conductivity and re-stacking tendency. In this study, we demonstrate a facile and simple synthesis of MoS 2 nanoflowers free from re-stacking and demonstrate that further encapsulating the nanoflowers with a fine N-doped carbon shell enhances conductivity through the self-polymerization of dopamine. This class of nitrogen-doped carbon-encapsulated MoS 2 composites (MSCNs) was systematically optimised by adjusting nitrogen-doped carbon ratios. The composite with a mass fraction of approximately 86% MoS 2 and approximately 14% carbon content (named MSCN-1) exhibited excellent capacitive performance. In comparison to the specific capacitance of MoS 2 (169 F g −1 at 1 A g −1 and 85.30% retained capacitance over 6000 cycles), MSCN-1 based electrodes showed improved performance, delivering specific capacitance up to 276 F g −1 at 1 A g −1 and 90.59% retained capacitance over 6000 cycles. The significantly enhanced electrochemical performance of MSCN-1 was primarily due to MoS 2 and partly due to N-doped carbon. Taken together, these findings provide strong synergistic effects in this condition.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2017
·Vol. 28
·期 16
·12297-12305
·
IF 2.019
Hou Baoting,Wang Xinlu,Yao Jing,Zhang Hongbo,Yu Wensheng,Liu Guixia,Dong Xiangting,Wang Limin,Wang Jinxian
A simple and novel method based on recrystallization-sulfurization method has been developed to fabricate Ce 2 S 3 /MoS 2 composite and their structure, morphology and electrochemical performance is researched systematically. The Ce 2 S 3 /MoS 2 composite exhibit enhanced electrochemical performance compared with Ce 2 S 3 and MoS 2 . Among them, Ce 2 S 3 /MoS 2 composite has an initial reversible discharge capacity of 187.5 mAh g −1 , coulombic efficiency of 78.6% and a reversible capacity as high as 636.5 mAh g −1 , coulombic efficiency of 99.7% after 500 cycles at a current density of 100 mA g −1 and the highest discharge capacity of 97.3 mAh g −1 at a high current density of 1000 mA g −1 , showing the best reversible capacity and cycling performance. The results show that the compositing between MoS 2 and Ce 2 S 3 can maintain the stability of the structure during the charge/discharge process and existence of Ce 2 S 3 can enhance the electrical conductivity of Ce 2 S 3 /MoS 2 composite and further improves the reversible capacities, cycling performance and rate performance of Ce 2 S 3 /MoS 2 composite.
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2016
·
IF 13.334
Wenyan Yin,Jie Yu,Fengting Lv,Liang Yan,Li Rong Zheng,Zhanjun Gu,Yuliang Zhao
We have developed a biocompatible antibacterial system based on polyethylene glycol functionalized molybdenum disulfide nanoflowers (PEG-MoS2 NFs). The PEG-MoS2 NFs have high near-infrared (NIR) absorption and peroxidase-like activity, which can efficiently catalyze decomposition of low concentration of H2O2 to generate hydroxyl radicals (·OH). The conversion of H2O2 into ·OH can avoid the toxicity of high concentration of H2O2 and the ·OH has higher antibacterial activity, making resistant bacteria more vulnerable and wounds more easily cured. The PEG-MoS2 NFs combine the catalysis with NIR photothermal effect, providing a rapid and effective killing outcome in vitro for Gram-negative ampicillin resistant Escherichia coli (AmprE. coli) and Gram-positive endospore-forming Bacillus subtilis (B. subtilis) as compared to catalytic treatment or photothermal therapy (PTT) alone. Wound healing results indicate that the synergy antibacterial system could be conveniently used for wound disinfection in vivo. Interestingly, glutathione (GSH) oxidation can be accelerated due to the 808 nm irradiation induced hyperthermia at the presence of PEG-MoS2 NFs proved by X-ray near-edge absorption spectra and X-ray spectroscopy. The accelerated GSH oxidation can result in bacterial death more easily. A mechanism based on ·OH-enhanced PTT is proposed to explain the antibacterial process.
✓ 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）