PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2020
·Vol. 22
·期 7
·4096-4105
·
IF 3.43
Zhixiang Liu,Mengyuan Xiang,Yao Zhang,Huaiyu Shao,Yunfeng Zhu,Xinli Guo,Liquan Li,Hui Wang,Wanqiang Liu
LiBH4 is one of the most promising solid electrolyte materials for use in solid-state batteries because its hexagonal phase above 110 °C offers Li-ion conductivity of almost 10−3 S cm−1. However, near room temperature, its orthorhombic phase delivers Li-ion conductivity of only 10−8 S cm−1, which considerably hampers its further applications. In the present study, a highly disordered interface between LiBH4 and two-dimensional MoS2 in the composite material was formed, yielding ionic conductivity of 10−4 S cm−1 at room temperature. LiBH4 and MoS2 are found to be in close contact without the formation of any intermediate phase at the interface. First-principles calculations employing density functional theory (DFT) and the nudged elastic band (NEB) method reveal that the migration energy barrier on three specific pathways could be established via microstructure analyses. It was found that the interface between the two phases yields the lowest Li-ion diffusion barrier among all the possible Li-ion pathways; further, the superior conductivity of the composite could be attributed to the interface with high Li-ion conductivity. This study proposes a new strategy for designing solid electrolytes and provides certain possibilities for two-dimensional materials to serve as superior solid electrolytes.
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Shiting Luo,Xiaoshan Lin,Limei Xu,Huicheng Guo,Jieyi Lai,Jianglun Wu,Yifei Feng,Lin Ma
In this work, a template-free hydrothermal strategy has been developed to fabricate 3D hierarchical MoS 2 microflowers on macroporous Ti mesh (MoS 2 MF-Ti) as a binder-free electrode for hydrogen evolution reaction (HER). It is found that the Ti mesh is able to provide an ideal platform for self-assembly of the MoS 2 nanosheets into the hierarchical microflowers. The as-prepared MoS 2 MF-Ti electrode is characteristic of meso/macro porous structures, abundant active edges and good conductivity. As a result, the MoS 2 MF-Ti demonstrates greatly enhanced electrocatalytic activity and stability toward HER due to its desirable structural features.
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Honghao Zhang,Jun Wei,Yu Yan,Qianjin Guo,Liqiang Xie,Zhengchun Yang,Jie He,Wen Qi,Zongsheng Cao,Xinhao Zhao,Peng Pan,Huayi Li,Kailiang Zhang,Jinshi Zhao,Xuan Li,Ping Zhang,Kwok Wei Shah
In order to improve the production rate of MnO 2 as the excellent supercapacitor materials and enhance the performance of MnO 2 based pseudocapacitor , an innovative mechanical method of ultrasonic assisted shear exfoliation is developed to prepare MnO 2 nanocrystalline in large quantities, and then the MoS 2 composites are deposited by simple magnetron sputtering to form inner heterojunction structure to improve the overall supercapacitor performance. The electrochemical performances of the electrodes fabricated by commodity MnO 2 (c-MnO 2 ), sheared MnO 2 (s-MnO 2 ) and s-MnO 2 /MoS 2 are studied respectively. The results demonstrate that as-prepared s-MnO 2 presents better supercapacitor performance compared with c-MnO 2 due to the increase of specific surface area after the shearing process. In addition, the s-MnO 2 /MoS 2 inner heterostructure shows the best electrochemical reversibility , the highest rate capacity, the most excellent specific capacitance (~224 mF cm −2 ) and the highest conductivity among three working electrode materials because of its high specific surface area and good conductivity. The symmetrical all-solid-state supercapacitor based on s-MnO 2 /MoS 2 is fabricated, its specific capacitance can still maintain 90% after 3000 cycles of charging/discharging process, and this all-solid-state supercapacitor can power a group of 43 light-emitting diodes (LEDs). In addition, the packaged supercapacitor device can gain excellent capacitance performance during bending.
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DOI
高影响因子
ChemElectroChem
·
2018
·Vol. 6
·期 3
·748-756
·
IF 4.446
Yuan-Sheng Cheng,Min Ling,Bin-Bin Jiang,Fang-Hui Wu,Zi-Hao Zhao,Xiao-Ning Li,Peng-Fei He,Xian-Wen Wei
Graphical A three-dimensional composite is synthesized by a simple two-step method and applied as a highly active pH-universal electrocatalyst for the hydrogen evolution reaction. The material is stable in acid, neutral, and alkaline media. Developing high-performance non-noble-metal electrocatalysts for the hydrogen evolution reaction (HER), which can be stably operated under various conditions is highly required in realistic production. In this work, a hierarchical architecture consisting of MoS 2 and Co 9 S 8 anchored on a reduced graphene oxide (rGO) substrate was first synthesized, then by introducing blank graphene oxide (GO) and multi-walled carbon nanotubes (CNTs), interconnected three-dimensional (3D) composite aerogels with high conductivity were obtained, showing a high activity for the HER, with low overpotentials (η 10 ) at about 90 mV (0.5 M H 2 SO 4 ), 176 mV (1.0 M PBS), and 102 mV (1.0 M KOH). The high performance might be caused by special hierarchical 3D structures maximally exposing the active edges of both MoS 2 and Co 9 S 8 . Additionally, 3D MoS 2 /Co 9 S 8 /rGO-CNTs showed a superior stability and could work stably under different conditions for more than 20 h or 1000 cycles, which is attributed to the good crystallinity after annealing, the highly symmetrical structures between Co 9 S 8 and MoS 2 , and robust protection provided by the 3D carbon substrate. The results presented herein may provide an effective way to develop non-noble-metal electrocatalysts for different fields including the HER.
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DOI
高影响因子
GREEN CHEMISTRY
·
2019
·Vol. 22
·期 1
·44-53
·
IF 9.405
Yajing Duan,Yanglin Liu,Zhaojun Chen,Dong Liu,Enqiang Yu,Xiaodong Zhang,Hui Fu,Jinzhe Fu,Jiatao Zhang,Hui Du
Slurry-phase hydrocracking employing a dispersed catalyst is an efficient technology for the upgrading of residue to clean fuels. The green synthesis of 2D nanosheet hierarchical composites when carrying out some intrinsic functionalities is interesting for both scientific and technological applications. Herein, we present our effort in simultaneously enhancing the residue upgradation and synergistic fabrication of 2D MoS2 nanosheets/carbon hierarchical structures based on amorphous molybdenum sulfide nanocatalysts. The amorphous molybdenum sulfide nanocatalysts (MoSx-AM, x ≈ 2.79) are constructed in an inverse microemulsion system and are then either modified by oleic acid to synthesize oleophilic MoSx nanocatalysts (MoSx-OL) or annealed to obtain MoS2 nanocatalysts with the typical layered structure (denoted as MoSx-AN). Benefiting from the decomposition into 2D MoS2 nanosheets with a length less than 20 nm during the residue slurry-phase hydrocracking, MoSx-AM and MoSx-OL exhibit superior hydrogenation and anti-coke activity compared with MoSx-AN. X-ray photoelectron spectroscopy and density functional theory (DFT) calculation reveal that the residue macromolecules with a polycyclic aromatic structure and heteroatoms show strong interaction with 2D MoS2 nanosheets, which disturbs the formation of a layered-structure of MoS2 and results in isolated 2D MoS2 nanosheets. The generated 2D MoS2 nanosheets with abundant active sites lead to the superior performance in residue slurry-phase hydrocracking. These results demonstrate a dispersed nanocatalyst for slurry-phase hydrocracking and also provide a perspective for the anti-coke of petroleum refining. In particular, this process also enabled the dispersed 2D MoS2 nanosheet/carbon hierarchical structure formation synergistically.
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2015
·
IF 4.642
Youfang Zhang,Lizeng Zuo,Yunpeng Huang,Longsheng Zhang,Feili Lai,Wei Fan,Tianxi Liu
Molybdenum disulfide-based hybrids, acting as cost-effective and acid-stable electrocatalysts for hydrogen evolution reaction (HER), have been developed fast for providing sustainable hydrogen energy in recent years. Herein, few-layered molybdenum disulfide (MoS2) nanosheets/carbon aerogel (CA) hybrids were successfully obtained through the combination of sol–gel process, aging, freeze-drying, high temperature carbonization, and solvothermal reaction. CA with highly continuous porosity and high specific surface area is used as a matrix material for construction of hierarchical MoS2/CA hybrids where few-layered MoS2 nanosheets are uniformly covered on a CA surface. In this heterostructured system, CAs not only provide three-dimensional (3D) conductive pathway for fast transportation of electrons and ions, but also offer highly active regions for the growth of MoS2, greatly preventing the aggregation of MoS2 nanosheets. Due to the rationally designed hybrids with 3D porous nanostructures, the as-prepared MoS2/CA hybrids with optimized MoS2 content exhibit enhanced catalytic performance for electrocatalytic HER with a low onset potential of −0.14 V, large current density, and excellent stability.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Luping Feng,Lixiang Zhang,Su Chu,Sheng Zhang,Xi Chen,Zhongling Du,Yushuang Gong,Hua Wang
MoS 2 nanosheets were doped with Fe elements simply via the one-pot hydrothermal route resulting in the peroxidase-like nanozymes with dramatically enhanced catalysis. It was discovered that the resulted Fe-MoS 2 could display controllable catalysis activities depending on the Mo-to-Fe molar ratios, among which the highest one was achieved at 3/1 with catalysis efficiency over three folds higher than that of pristine MoS 2 . The greatly improved catalysis performances of Fe-MoS 2 nanozyme are thought to be resulted from the synergistic effects of the doped Fe atom and Mo-S sites. On the one hand, herein, the Fe sites might serve as the electron transferring mediators to facilitate the peroxidase-like catalytic reactions, as confirmed by the cytochrome C -based electron transportation experiments. On the other hand, the Mo-S sites might conduct the catalytic behavior of Fenton-like reactions, as revealed by the hydroxyl radicals-capturing experiments. Furthermore, the feasibility of practical applications for the developed Fe-MoS 2 nanozyme based colorimetric methods was demonstrated for glucose in blood sample. Importantly, an insight can be thereby obtained into the design of different nanozymes with enhanced catalysis designed by doping heteroatoms like Fe, promising for the catalysis-based applications in the biomedical analysis, food safety, and environmental monitoring fields.
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DOI
高影响因子
Journal of Cleaner Production
·
2021
·
IF 9.297
Junfei Liu,Yingbo Dong,Liping Zhang,Wei Liu,Conghui Zhang,Yuanyuan Shi,Hai Lin
Nano molybdenum disulfide (Nano-MoS 2 ) can be as a photocatalyst for antibiotic removal under visible light. However, the low energy of visible light and limited radicals restrict the applications of nano-MoS 2 . In this study, ceria dioxide (CeO 2 ) rich in adsorbed oxygen was introduced into MoS 2 @Z (MoS 2 @Zeolite) to synthesize full-spectrum CeO 2 /MoS 2 @Z photocatalysts (CeO 2 /MoS 2 @Zs). The CeO 2 /MoS 2 @Z-3 (Ce: 1.5 mmol; Mo: 3.5 mmol) shows the best photocatalytic ability (98.32%) for tetracycline within 150 min, which is 18.20% improvement over MoS 2 @Z. The UV–vis diffuse reflection spectra of photocatalysts shows that the ultraviolet absorption ability of CeO 2 /MoS 2 @Z-3 improved when CeO 2 was introduced. The active species trapping experiment and electron paramagnetic resonance (EPR) test prove h + and superoxide radicals (•O 2 − ) are the main active species, and CeO 2 rich in adsorbed oxygen improves the amounts of •O 2 − in photocatalytic process. Moreover, singlet oxygen ( 1 O 2 ), producing by oxygen vacancies of CeO 2 , also plays an important role. The enhanced photocatalytic activity is attributed to full-spectrum (200 nm–800 nm) absorption performance , improved content of •O 2 − , and electron-hole (e − /h + ) pairs separation. After five times recycle, the photodegradation efficiency of CeO 2 /MoS 2 @Z-3 only decreased by 2.59%. Meantime, the proposed three photocatalytic pathways show that tetracycline eventually degraded into small organics (like C 5 H 8 O 3 ), H 2 O and CO 2 by dehydration, demethylation, deamination, dihydroxylation, deamidation, ring-opening reaction and carbonylation . The results show that CeO 2 /MoS 2 @Z-3 may become a high efficiency, stable, and promising photocatalyst for tetracycline wastewater treatment .
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DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2022
·
IF 2.719
Huan Zhang,Chang Liu,Yu Wang,Feifei Jia,Shaoxian Song
In this work, Mn (II) was doped into MoS 2 structure and then anchored on activated alumina beads to construct 3D-sized composites (Mn-MoS 2 @AABs). This component material was used as PMS activator for tetracycline (TC) degradation under light irradiation. According to experiment results, Mn-MoS 2 @AABs exhibited well degradation performance to TC, which ascribed to excellent photo-response property of Mn-MoS 2 and activation of Mn. Importantly, the 3D-sized structure made it facilely be recycled from solution, which catered to the demand for the practical application. Therefore, the novel strategy of designing Mn-MoS 2 @AABs had great significance for environmental restoration.
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DOI
高影响因子
Sustainable Materials and Technologies
·
2025
·
IF 9.2
Xiyue Chen,Jingcheng Xia,Zhantong Tu,Kaiqi Chen,Shiyuan Wei,Ruxue Yang,Bing Lei,Sheng Liu,Xin Wu
The prosperity of flexible and wearable electronic devices stimulates the increasing demand for high flexibility and miniaturization of energy storage devices. Inkjet printing allows rapid, low-cost, and precise large-scale production of flexible electronics, and injects new blood into the fabrication technology community. The synergistic coupling effect of Poly (3,4-ethylenedioxythiophene): Poly (styrenesulfonate) (PEDOT:PSS) and molybdenum disulfide (MoS 2 ) brings possibility to enhance the performance of micro-supercapacitors (MSCs). In this work, for the first time an aqueous and non-toxic printable PEDOT:PSS/MoS 2 composite ink is prepared for inkjet printing of paper-based MSCs. The influences of composite ratio of inks and electrode thickness on the device performance are detailedly explored, and the optimized parameters are uncovered. The maximum areal capacitance for the printed MSCs could reach 1.572 mF/cm 2 , and maintain 97.4 % of capacity at high current densities (60 μA/cm 2 ), and the maximum areal energy density could reach 0.22 μWh/cm 2 under a power density of 4.97 μW/cm 2 , indicating great potential for the applications on wearable energy storage systems.
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Chuanli Wang,Chu Sun,Deyang Zhao,Zhiguo Zhu,Kaixuan Yang,Christophe Len,Hongying Lü,Ting Su
A MoS 2 /ZnIn 2 S 4 composite photocatalyst were synthesized via a one-step hydrothermal method for the visible-light-driven oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF). The reaction was conducted under mild, environmentally friendly conditions, using water as the solvent and without the need for additional oxidizing agents. The flower-like MoS 2 /ZnIn 2 S 4 structure exhibited a high specific surface area, and the formation of a Z -scheme heterojunction between MoS 2 and ZnIn 2 S 4 effectively suppressed the recombination of photogenerated electron-hole pairs, thereby enhancing photocatalytic performance. Density functional theory (DFT) calculations revealed that the 17.5 % MoS 2 /ZnIn 2 S 4 composite possessed lower adsorption energy and a more delocalized electron cloud, creating more favorable conditions for HMF oxidation. Under optimal conditions, the catalyst achieved 70.2 % conversion of HMF with 92.2 % selectivity toward DFF after 3 h of xenon light irradiation. Radical trapping experiments indicated that superoxide radical (•O 2 − ) were the dominant reactive species driving the transformation. This study highlights the potential of one-step hydrothermally synthesized Z -scheme MoS 2 /ZnIn 2 S 4 heterojunctions for efficient biomass-derived chemical valorization, offering valuable insights for the sustainable production of DFF and related high-value chemicals.
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Bingkun Liu,Weijun Tian,Mengyuan Zou,Zhiyang Lu,Bingjie Huo,Xinbo Wang,Xinran Yu,Wei Bao,Ke Yang
Photocatalytic system designed based on molecular imprinting technology (MIT) is a strategic solution for pesticide remediation in agricultural drainage. The heterojunction architecture constructed from MoS₂/MIL-101(Fe) nanoparticles was functionally enhanced through MIT to create molecular-recognition cavities (MFM), enabling selective chlorsulfuron degradation in complex aqueous matrices. The MFM system exhibited a superior pseudo-first-order rate constant (0.0158 min −1 ), representing a 102.60-fold enhancement over pristine MoS₂-based systems. Remarkably, it maintained an exceptional selectivity factor (3.01) in tetracycline-coexisting environments. Mechanistic studies revealed that MIT-mediated targeted adsorption reduces the mass transfer distance between reactive oxygen species and chlorsulfuron, amplifying photocatalytic efficiency. Density functional theory calculations delineated the complete electron transfer trajectory from heterointerfaces to adsorption sites, identifying Mo S sites as dominant charge transfer mediators. Practical applicability was validated via continuous-flow prototypes processing actual water samples and structural analogs. Ecotoxicological assessments using soil microorganisms, Portulaca oleracea seedlings, and human bronchial/intestinal epithelial cells confirmed biosafety thresholds. This work provides a conceptual framework for the engineering design of molecular-memory photocatalysts and superficial insights for advancing practical environmental remediation technologies.
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DOI
高影响因子
危险品化学品经营许可证（带存储）