RSC Advances
·
2016
·Vol. 6
·期 20
·16711-16719
·
IF 3.289
M. Zirak,M. Ebrahimi,M. Zhao,O. Moradlou,M. Samadi,A. Bayat,H.-L. Zhang,A. Z. Moshfegh
A very simple and well-controlled procedure was employed to prepare CdS nanoparticle/few-layer MoS2 nanosheet/Indium tin oxide (ITO) thin film heterostructures. To tune and fabricate the CdS/MoS2(t)/ITO thin films with various surface topographies, first electrophoretic deposition (EPD) was used to deposit MoS2 nanosheets on the ITO substrate under an optimized applied potential difference (8 V) for different deposition times (t) of 30, 60, 120 and 240 s. Then, CdS nanoparticles were deposited via a successive ion layer adsorption and reaction (SILAR) technique. The highest photo-current density of 285 μA cm−2 was measured for the CdS/MoS2(60 s)/ITO sample, which was about 2.3 times higher than the value obtained for bare CdS/ITO. The photo-enhancement mechanism of the CdS/MoS2(t)/ITO heterostructures was described using a stochastic model. The results show that the CdS/MoS2(60 s)/ITO electrode exhibits the highest roughness exponent (2α = 0.67) with the smoothest nanometric fluctuations, resulting in the best wetting properties, and thus, the highest interaction between the electrolyte and the sample surface, leading to the highest PEC activity. On the other hand, the samples with small α possess rough and nanometric-jagged fluctuations. The air trapping inside these microscopic surface fluctuations reduces the wettability as well as surface interaction between the sample and the electrolyte, resulting in low photo-current density.
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 37
·31031-31036
·
IF 3.289
Zichen Huang,Yafei Qi,Dexin Yu,Jinhua Zhan
MoS2, a typical transition-metal dichalcogenide, has attracted increasing attention in the field of biomedicine due to its preeminent properties. In this paper, MoS2 nanoparticles with radar-like shapes were demonstrated as 808 nm laser-induced photothermal agents with outstanding photothermal performance. According to our calculations, the radar-like morphology endowed the MoS2 nanoparticles with higher photothermal conversion efficiency (53.3%) compared to other morphologies including nanoflowers, microspheres and irregular nanoparticles. Cytotoxicity assay indicated that the radar-like nanoparticles were biocompatible. Results of in vitro photothermal therapy and apoptosis assay indicated that tumor cells treated with MoS2 radar-like nanoparticles can be seriously damaged. Photothermal therapy on tumor-bearing mice was carried out to further verify the anti-cancer properties of the MoS2 radar-like nanoparticles. All the aforementioned results suggested that the MoS2 radar-like nanoparticles exhibit enormous potential for cancer photothermal therapy.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2017
·Vol. 85
·期 1
·140-148
·
IF 1.575
Guo Xingzhong,Yin Pengan,Wang Zichen,Yang Hui
Abstract Porous MoS 2 /C nanocomposites have been successfully via a sol–gel route with ammonium molybdatetetrahydrate ((NH 4 ) 6 Mo 7 O 24 ·4H 2 O) as molybdenum source, glucose as carbon source and tetramethyloxysilane (TMOS) as gelation accelerator, subsequently followed by high-temperature sulfuration and further NaOH etching to remove silica template derived from TMOS. The as-prepared MoS 2 /C nanocomposites were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared spectroscopy (FT-IR), and nitrogen adsorption–desorption, and the effect of molybdenum precursor mass on the synthesis of product was also investigated. The Mo and TMOS mass ratio obviously affects the gelation time, phase composition and morphology of the resultant product, and an appropriate Mo and TMOS mass ratio allows the formation of lamellar structure as well as perfect MoS 2 phase. The as-prepared MoS 2 /C nanocomposite with Mo and TMOS mass ratio of 7:3 exhibits a BET surface area of 31 m 2 g −1 and a mesopore size of 20 nm, and demonstrates good electrochemical performances with 400 mA h g −1 specific reversible capacity after 60 cycles owing to the pore structure and synergistic effect between MoS 2 and amorphous carbon. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 62
·57190-57198
·
IF 3.289
Lili Gao,Xuelian Li,Xiaodong Li,Jianli Cheng,Bin Wang,Zhiyu Wang,Changming Li
Coaxial yarn electrodes composed of activated carbon fibers tows and MoS2 nanosheets (ACFTs/MoS2) are synthesized by a facile hydrothermal approach. The active material, hierarchical MoS2 nanosheets, delivers a high specific capacitance of 308.5 F g−1 at scan rate of 5 mV s−1. Solid-state supercapacitors (SCs) in the planar format based on the ACFTs/MoS2 yarn electrode in PVA/H3PO4 gel electrolyte show an excellent energy density of 3.76 mW h g−1 at constant current density of 0.21 A g−1, a high power density of 474.49 mW g−1 at 3.16 A g−1 and a long cycle life with a capacitance retention as high as 97.38% even after 6000 times of charging–discharging under 2.21 A g−1. Furthermore, the SCs in a planar format represent superior combination feasibility when combined in parallel or series, approaching the theoretical value. Additionally, twisting SCs made from ACFTs/MoS2 yarn electrodes show good flexibility and electrochemical stability, which maintain 97.6% of their initial capacitance after being bent to different angles. These outstanding performances can be ascribed to the high accessible surface area for the electrolyte, the short path for ion diffusion provided by the MoS2 nanosheets (NSs), as well as the effective transport channels for electrons provided by the carbon fibers. The rough surface and oxygen containing groups on the activated carbon fiber offer robust anchor sites for MoS2 NSs, which not only facilitate electron transport but also provide strong adhesion between MoS2 NSs and carbon fibers.
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2017
·
IF 4.811
Xiancai Jiang,Yujun Sun,Hongxiang Zhang,Linxi Hou
In this study, a series of novel quaternized poly(vinyl alcohol)/chitosan/molybdenum disulfide (QPVA/CS/MoS 2 ) anion exchange membranes (AEMs) were prepared for direct methanol alkaline fuel cell (DMAFC). The composite membrane was synthesized by adding different amounts of MoS 2 nanosheets (0, 0.1, 0.2, 0.5 and 1 wt%) into QPVA/CS mixture solution and using the solution casting method. The crystallinity, thermal and mechanical properties, ion conductivity and resistance to methanol of the QPVA/CS/MoS 2 membranes were characterized by X-ray diffraction, thermogravimetric analysis, tensile testing, ion exchange capacity, and methanol permeability measurements, respectively. The MoS 2 was homogeneously dispersed in the membranes. The mechanical strength of the composite membranes was enhanced with the addition of MoS 2 . With the addition of 1.0 wt% MoS 2 , the QPVA/CS/MoS 2 composite membrane has the lowest methanol permeability of 0.210 × 10 −7 cm 2 ·s −1 . This study confirmed that the novel QPVA/CS/MoS 2 membrane would be a potential candidate for the application in DMAFCs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2024
·
IF 13
Ning Li,Yong Ma,Jiafeng Ma,Qing Chang,Xiangqian Fan,Lei Liu,Chaorui Xue,Caihong Hao,Huayang Zhang,Shengliang Hu,Shaobin Wang
MoS 2 /ZnIn 2 S 4 flower-like heterostructures into porous carbon (PC@MoS 2 /ZIS) are embedded. This ternary heterostructure demonstrates enhanced light absorption across a broad spectral range from 200 to 2500 nm. It features both Type-II and S-scheme dual heterojunction interfaces, which facilitate the generation, separation, and transfer of photoinduced carriers. The PC enveloped by MoS 2 /ZIS composite microspheres serves as a photothermal source, providing additional energy to the carriers. This process accelerates charge separation and migration, enhancing photothermal-assisted photocatalytic H 2 evolution. The optimal H 2 evolution rate for PC@MoS 2 /ZIS reaches an impressive 18.79 mmol g −1 h −1 , with an apparent quantum efficiency of 14.1% at 400 nm. This work presents a promising approach for effectively integrating multicomponent heterostructures with photothermal effects, offering innovative strategies for efficient solar energy utilization and conversion.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Ning Zhang,Zhuhe Zhai,Yueru Yan,Xuejiao Feng,Shengqiang Chen,Yafei Zhao,Bing Zhang
Rationally designing heterostructured photocatalysts to expedite the separation/transfer of photoinduced electrons/holes is regarded as an exceptionally efficient and simple strategy for promoting the photocatalytic hydrogen production from water splitting. To this end, an effective photocatalyst (Co-MoS 2 /ZIS) was constructed via in-situ growth of two-dimensional (2D) ZnIn 2 S 4 (ZIS) nanosheets on 2D Co doped MoS 2 (Co-MoS 2 ) nanoplates to obtain 2D/2D heterostructure. The optimized 5 wt% 20-Co-MoS 2 /ZIS photocatalyst displays a remarkably higher photocatalytic water splitting performance with hydrogen generation rate of 2405.34 μmol g -1 h −1 than that of pure ZIS (419.69 μmol g -1 h −1 ). Additionally, it also demonstrates good stability and reusability with unconspicuous and insignificant decrease of activity after eight cycles and 24 h. The improved photocatalytic hydrogen production performance may be attributed to the extraordinary heterostructure of Co-MoS 2 /ZIS, the doping of Co in MoS 2 and the thick/flat surface of Co-MoS 2 , which provide large close contact interface and plentiful active sites, and prevent the aggregation of ZIS and Co-MoS 2 , thus shortening the transport distance, improving the light absorption and accelerating the separation/transfer of the photoinduced electrons/holes. This work offers a rational and feasible method for coupling 2D ZIS nanosheets with other 2D nanoplates for enhanced photocatalytic hydrogen generation from water splitting.
✓ 已验证
产品关联
DOI
高影响因子
Progress in Natural Science-Materials International
·
2025
·
IF 7.1
Jie Li,Zhangyue Zheng,Yuehong Huang,Liu He,Hongying Guo,Chunzheng Wu,Wei Liu,Weiwei Huan
The serious problems caused by water contamination call for efficient treatment. The catalytic reduction of 4-nitrophenol (4-NP) by NaBH 4 in solution is a convenient way to convert 4-NP to 4-aminophenol (4-AP), which is a precious intermediate for manufacturing of important materials such as pharmaceuticals. In the present study, the Co modified MoS 2 supported Au nanoparticles (Au/Co-MoS 2 ) is proved to be an efficient catalyst for the reduction of 4-NP. With the introduction of cobalt, the catalytic activity is improved obviously compared to Au/MoS 2 . When Co:Mo is 2:8 (mol), the Au/CoMoS 2 (2/8) catalyst exhibits the highest activity. The kinetics of the catalytic reactions were studied by the plot of ln(C t /C 0 ) against reaction time and the k app for Au/CoMoS 2 (2/8) is 1.063 min −1 . The characterization of the catalysts shows that the addition of cobalt can create more crystal defects, promote the exposure of active edge sites, facilitate the surface of catalysts to be more reactive.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Weijin Li,Junhui Hu,Qiaoling Shao,Tao Tang,Junjie Huo,Jian Sun,Kang Dai
Currently, the development of high-performance adsorbents for the removal of nanoplastics in complex aquatic environments is challenging. In this study, a functionalized polyethyleneimine-phosphorylated microcrystalline cellulose/MoS 2 (PEI-PMCC/MoS 2 ) hybrid aerogel was prepared and applied to remove carboxyl-modified polystyrene (PS-COOH) nanoplastics from the aqueous solution. Benefiting from the introduced functional groups and the expanded lamellar structure in MoS 2 nanosheets as well as the highly porous 3D structure of the aerogel, PEI-PMCC/MoS 2 demonstrated high efficiency in PS-COOH nanoplastics removal, achieving a 402.4 ± 7.5 mg/g maximum adsorption capacity at the optimal adsorption pH of 7.0 (C 0 = 300 mg/L). The adsorption isotherm and kinetics data fitted well with the Langmuir and pseudo-second-order models, respectively, suggesting that the removal of PS-COOH nanoplastics was dominated by the monolayer chemisorption process, and the thermodynamic studies revealed the exothermic nature of the spontaneous adsorption process. Furthermore, the adsorption performance of PEI-PMCC/MoS 2 in different complex aqueous environments, as well as its reusability, was evaluated, and the interactions between PEI-PMCC/MoS 2 and PS-COOH nanoplastics were analyzed to elaborate the adsorption mechanism. These results confirmed the high nanoplastics removal efficiency and favorable reusability in PEI-PMCC/MoS 2 , laying a solid foundation for developing high-performance adsorbents for nanoplastics removal.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jia Zhang,Jiliang Ma,Rui Cui,Weikang Ling,Min Hong,Runcang Sun
Promoting interfacial separation and charge transfer within S-scheme heterojunctions is crucial for effectively enhancing photocatalytic H 2 production. Here, we have successfully synthesized flower-shaped CoP@MoS 2 -x S-scheme heterojunction photocatalysts through a straightforward thermal annealing and hydrothermal process. These photocatalysts demonstrated exceptional performance in H 2 generation assisted by biorefinery. The optimal CoP@MoS 2 -2 photocatalyst achieved an H 2 evolution rate of 4339.39 μmol g −1 h −1 , which is 8 and 5.5 folds of individual CoP and MoS 2 , respectively. Meanwhile, the system was accompanied by 81.0 % yield of lactic acid, which is higher than those of CoP and MoS 2 . The enhanced photocatalytic performance of CoP@MoS 2 -x heterojunctions stems primarily from their unique S-scheme charge carrier transport mechanism. This S-scheme heterojunction structure not only boosts the separation efficiency of photogenerated electron-hole pairs but also preserves a robust photocatalytic redox capacity. This study provides a new avenue for designing efficient photocatalysts of H 2 generation assisted by biomass oxidation.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·Vol. 36
·期 48
·2412844
·
IF 27.4
Xinyi Zhang,Linyu Hu,Kemeng Zhou,Linqing Zhang,Xiaolong Zeng,Yuqing Shi,Weizheng Cai,Jiazhen Wu,Yuanjing Lin
Aqueous zinc-ion batteries with superior operational safety have great promise to serve as wearable energy storage devices. However, the poor cycling stability and low output voltage limited their practical applications. Here, fully printable Zn/MoS 2 -MnO 2 micro-batteries are developed and demonstrated significantly enhanced cycling stability with sweat activation. 2D MoS 2 is utilized to enable lattice-matching with Zn powders to realize printed Zn anodes with desirable stability and promote electron/ion transfer. Interestingly, the mild acid epidermal sweat also contributed to eliminating the MnO 2 cathode by-products and compensating for the hydrogel electrolytes' water loss. The Zn/MoS 2 -MnO 2 micro-batteries achieve a high specific capacity of 318.9 µAh cm −2 at the current density of 0.16 mA cm −2 , and an energy density of 424.6 µWh cm −2 , with remarkable cycle stability of ≈90% after 250 cycles. In-battery electrochromic display of capacity level and feasible electronics charging are demonstrated. The as-printed micro-batteries with innovative sweat activation would inspire the advances of sustainable power supply for wearables.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Chang Liu,Qinghan Wang,Peng Chen,Kaige Sun,Jianbo Li,Luis A. Cisternas,Shaoxian Song,Feifei Jia
MoS 2 materials performed well as adsorbent for Au(S 2 O 3 ) 2 3- recovery, but the effect of its crystal facets on recovery behavior and mechanism remained unclear. In this study, flower-shaped MoS 2 with exposed (110) facet and flake-shaped MoS 2 with (002) exposed facet have been synthesized through a simple hydrothermal method, and their recovery performance and mechanism for gold from Au(S 2 O 3 ) 2 3- solution were explored. The results indicated that MoS 2 materials could recover Au(S 2 O 3 ) 2 3- via adsorption and photocatalytic reduction. Importantly, MoS 2 materials with different exposed facets displayed crystal anisotropy, which greatly affected the recovery behavior of Au(S 2 O 3 ) 2 3- . Flake-shaped MoS 2 showed better dispersibility because of stronger surface electronegativity, and flower-shaped MoS 2 displayed better photocatalysis property thanks to more activated edge sites. The better dispersibility made flake-shaped MoS 2 have higher contact probability to Au(S 2 O 3 ) 2 3- molecules, resulting in faster recovery rate as well as higher recovery for Au(S 2 O 3 ) 2 3- with low concentration. Meanwhile, flower-shaped MoS 2 with better photocatalysis property could release more photogenerated electrons, so that achieving more excellent recovery for Au(S 2 O 3 ) 2 3- with high concentration. The finding in this study enhanced the understanding about the effect of MoS 2 facets on Au(S 2 O 3 ) 2 3- recovery, which had great significance for the design of MoS 2 structure and green production of gold in the future.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）