APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Yanfang Wang,Yanjun Guo,Wentao Chen,Qing Luo,Wenli Lu,Peng Xu,Dongliang Chen,Xiong Yin,Meng He
Low-cost catalysts possessing merits of high conductivity and plenty of active sites are highly desirable for the developing of Pt-free counter electrode (CE) in dye-sensitized solar cells (DSCs). In this study, porous sulfur-doped reduced graphene oxide/MoS 2 (S-rGO/MoS 2 ) composites were successfully synthesized via a simple one-step annealing strategy employing CS 2 as sulfur source. Electrochemical measurements revealed that the as-prepared composite presented a superior catalytic activity on the triiodide reduction process, comparable with Pt electrode. Under optimized conditions, a power conversion efficiency of 6.96% was achieved for the N719-sensitized solar cell with a S-rGO/MoS 2 CE, which is very close to that for the device containing a thermally deposited Pt CE (7.35%). The outstanding electro-catalytic activity of composite was attributed to the exposed numerous edges providing much more active sites, and good conductivity resulting from two-dimensional conductive networks of both S-rGO and MoS 2 . This work demonstrated S-rGO/MoS 2 composite as a promising alternative for noble metal Pt in triiodide reduction process and a simple approach of employing two-dimensional nanomaterials as multifunctional materials in photovoltaic for mass application.
✓ 已验证
产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2018
·Vol. 40
·期 6
·2244-2257
·
IF 1.943
Lingfeng Xu,Xinwen Tan,Ruijie Xu,Jiayi Xie,Caihong Lei
Molybdenum disulfide (MoS 2 ) with two-dimensional (2D) lamellar structure was functionalized with melamine-cyanuric acid (MCA) hybrids via a facile way. A core-shell composite particle (MoMA) was obtained. Acting as one kind of synergistic flame retardant, it was mixed with traditional intumescent flame retardant (IFR) to prepare the flame retardant poly(lactic acid) composites by melt blending. UL-94 V-0 rating and LOI value of 29.8% for PLA composites were achieved while the total amount of flame retardants was 12 wt%, with the optimal weight ratio of IFR to MoMA 3:1. The inclusion of MoMA can enhance the amount of char residue and suppress the pyrolysis rate. The thermal degradation kinetic studies indicated that more pyrolysis conversion energy was needed. Finally, the investigation of char residue further confirmed that the addition of MoMA can improve the continuity and thermal stability of intumescent char layer and promote its graphitization degree. The condensed phase mechanism was mainly responsible for the improved flame retardant performance. This work suggests a novel strategy for improving flame retardant performance of PLA by combination of MoMA with IFR. The mechanical properties were studied as well. POLYM. COMPOS., 40:2244–2257, 2019. © 2018 Society of Plastics Engineers
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2018
·Vol. 6
·期 43
·11651-11658
·
IF 5.976
Yishuo Hu,Xiangbin Zeng,Tingting Ren,Shaoxiong Wu,Wenzhao Wang,Yang Zeng,Guangtong Zhou,Zhenyu Guo,Wen Jin,Shibo Wang,Yonghong Xiao,Jingjing Lu
Ultrathin 1T@2H-MoS2 films have excellent electronic and optical properties, and are potentially applicable in optics, electronics, energy storage, and sensing technology. However, identification of an efficient method to produce 1T@2H-MoS2 films with controllable thickness is challenging. This study describes the rapid synthesis (5–10 min) of 1T@2H-MoS2 thin films on Si/SiO2 substrates by a novel pulsed laser irradiation method. We verify the photodecomposition reaction model by measuring the UV-Vis absorption spectra of the reactants. The thickness of the synthesized MoS2 film can be controlled by adjusting the concentration of the precursor. Structural characterization confirms that both the 1T and 2H phases exist in the MoS2 film. The 1T phase enhances the conductive behavior of the MoS2 film and induces magnetism. Furthermore, pure 1T-MoS2 can be separated selectively from the MoS2 film under specific operating conditions using pulsed laser-induced synthesis. This approach is suitable for the synthesis of films of MoS2 and other 2D materials, including 1T phase-pure films.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Yufeng Sun,Longhua Xu,Geoffrey I.N. Waterhouse,Minglin Wang,Xuguang Qiao,Zhixiang Xu
A novel three dimensional electrochemical sensor with signal amplification and selective recognition of sulfamerazine (SMR) was successfully constructed. First, highly conductive amino-functionalized carbon [email protected] organic frameworks (NH 2 [email protected] ) and molybdenum disulfide (MoS 2 ) nanosheets were employed to modify the glassy carbon electrode (GCE) by simple physical deposition, in order to enhance the SMR response signal. Then, molecularly imprinted polymer (MIP) membrane was anchored on the surface of this modified GCE by electrochemical polymerization to achieve selective recognition for SMR. The electrochemical performance of the assembled electrochemical sensor was systematically investigated with differential pulse voltammetry and cyclic voltammetry. This obtained sensor displayed excellent selectivity for SMR and good reproducibility. Under optimal conditions, the sensor offered a wide current response for SMR from 3.0 × 10 −7 to 2.0 × 10 −4 mol L −1 , with a limit of detection of 1.1 × 10 −7 mol L −1 . Furthermore, this developed sensor was successfully applied for the determination of SMR in pork and chicken samples with recoveries of 86.0%–102.0%, and results correlated well with those obtained by high-performance liquid chromatography.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2015
·Vol. 25
·期 7
·1127-1136
·
IF 11.805
Shengjie Xu,Dian Li,Peiyi Wu
In this work, uniform molybdenum disulfide (MoS 2 )/tungsten disulfide (WS 2 ) quantum dots are synthesized by the combination of sonication and solvothermal treatment of bulk MoS 2 /WS 2 at a mild temperature. The resulting products possess monolayer thickness with an average size about 3 nm. The highly exfoliated and defect-rich structure renders these quantum dots plentiful active sites for the catalysis of hydrogen evolution reaction (HER). The MoS 2 quantum dots exhibit a small HER overpotential of ≈120 mV and long-term durability. Moreover, the strong fluorescence, good cell permeability, and low cytotoxicity make them promising and biocompatible probes for in vitro imaging. In addition, this work may provide an alternative facile approach to synthesize the quantum dots of transition metal dichalcogenides or other layered materials on a large scale.
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Hongqi Shi,Run Huang,Liujun Wu,Wanru Suo,Yunxiao Wang,Yusong Pan,Geliang Ren,Lei Huang
Designing new-type nanosystems to realize the combination of multiple treatment is an efficient routine to enhance the anti-tumor efficacy in clinic. In this study, molybdenum disulfide (MoS 2 ) was selected as a photothermal agent, and mesoporous silica (mSiO 2 ) was coated on the surface of MoS 2 using the solvothermal and template removal methods. The chemotherapeutic drug doxorubicin hydrochloride (DOX) as a model drug was then loaded into the above MoS 2 @mSiO 2 nanocarrier to prepare the tumor-targeting MoS 2 @mSiO 2 -DOX nanosystem. XRD, UV–Vis, FTIR, SEM, TEM, and DLS results jointly confirmed that the MoS 2 @mSiO 2 -DOX nanosystem with a particle size of approximately 370 nm was successfully synthesized. The XPS and BET analysis identified that the outer layer of MoS 2 @mSiO 2 nanocarrier was SiO 2 , which has a large surface area of 99.41 m 2 /g with an average pore size of 3.5 nm coated on the MoS 2 . The in-vitro cytotoxicity and photothermal performance of the MoS 2 @mSiO 2 nanodrug delivery system was tested, and the results show that MoS 2 @mSiO 2 has a low toxicity to normal human liver cells (HL-7702), and which also exhibits a good photothermal stability with a photothermal conversion efficiency of 28.8%. With the aid of the large specific surface area of mSiO 2 and the opposite zeta potential, a high amount of DOX was loaded on MoS 2 @mSiO 2 nanocarrier, and the measured loading efficiency of DOX can reach up to 48.87%. The 48 h-drug release rate of MoS 2 @mSiO 2 -DOX reaches 35.65% under the conditions of near infrared (NIR) laser irradiation at pH=5.0, which is nearly 5 times higher than that of 6.26% under the normal physiological environment (pH=7.4 without NIR laser irradiation), indicating that the MoS 2 @mSiO 2 -DOX nanosystem possesses obvious pH and NIR laser responsive release characteristics. The MoS 2 @mSiO 2 nanocarrier has good cytocompatibility, outstanding photothermal conversion and drug loading properties, and after DOX adsorption, the system exhibits excellent pH and laser responsive drug controlled release performance, which is expected to be widely used in the field of combining the photothermal-chemotherapy to synergistically resist tumor.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Shengqi Ding,Liang Wu,Xianxia Yuan
Electrocatalysts with appropriate electron coupling toward LiO 2 intermediates can exhibit superior oxygen reduction/evolution reaction kinetics in Li-O 2 batteries (LOBs). In this work, a charge redistribution strategy has been developed by constructing NiS/MoS 2 heterostructure nanosheet self-assembled hollow microspheres with an internal electric field to regulate the interaction with LiO 2 and then improve the electrochemical performance of LOBs. Density functional theory calculations and physicochemical characterizations reveal that the difference of work functions between NiS and MoS 2 promotes the electron redistribution in heterointerface via built-in electrical field, leading to increased electron density of interfacial Ni atom, thereby enhancing its electron coupling toward LiO 2 intermediates and promoting one-electron oxygen reduction/oxidation reaction kinetics. As a result, the NiS/MoS 2 -based LOBs exhibit evidently higher discharge capacity and much better cycling performance than the batteries using NiS and MoS 2 . This work provides a reliable charge redistribution strategy induced by build-in electric field to design efficient catalysts for LOBs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Zhe Lin,Zhengcai Guo,Xiaohong Wang,Jinchun Tu,Delun Chen,Yang Cao,Qiang Wu
MoS 2 is an attractive electrochemical sensing electrode material for the detection of biomolecule because of its adjustable band gap, large surface area, and unique electrochemical characteristics. However, the poor catalytic and electrical conductivity of the semiconductor 2H-phase MoS 2 and the phenomenon of restacking during electrochemical use hinder its sensing application. Herein, electron injection engineering is employed for the formation and stabilization of high-concentration metal 1T-phase MoS 2 nanosheets on ionic liquid-functionalized carbon nanotubes (CNTs-IL). The increase of MoS 2 concentration in the metal 1T phase significantly accelerates electron transfer kinetics. The in-situ growth method results in a tightly interfaced coupling effect, thereby substantially shortening the electron transport pathway and decreasing interfacial transmission impedance. In addition, the sulfur defects on the surface of MoS 2 as the anchoring point of sulfhydryl groups promote the enrichment of thiols on the surface of the material and reduce the reaction barrier for sulfhydryl oxidation, thereby improving the catalytic performance. The prepared CNTs-IL-MoS 2 /SPE biosensor shows excellent l -cysteine sensing performance by electrochemical detection.
✓ 已验证
产品关联
DOI
高影响因子
Applied Materials Today
·
2025
·
IF 6.9
Jiaxin Li,Yanzhi Xing,Han Leng,Qi Han,Yanfeng Zhang,Jianhua Wang,Xuwei Chen
The combination of photothermal therapy (PTT) and reactive oxygen species (ROS)-involved photodynamic therapy (PDT) holds great promise in enhancing anticancer effect. Herein, a MoS 2 -based multifunctional biomimetic nanotherapeutic platform for synergistic PTT and PDT anti-tumor therapy and real-time self-evaluation of therapeutic effect was developed. MoS 2 hollow nanospheres and fluorescence TAPP-Ma was cloaked with a 4T1 cell-activated fibroblast cell (CM-AF) hybrid membrane to give nanosystem CM-AF-MoS 2 @TAPP-Ma. The hybrid membrane as a delivery system not only offers the nanotherapeutic platform with homotypic targeting ability, but also effectively eliminates the barrier effect of tumor tissue microenvironment. Caspase 3 (Casp3) inside cancer cells activated by the PTT effect of MoS 2 hollow nanospheres broken down TAPP-Ma, triggering the PDT of TAPP. At the same time, the fluoresce “turn-off” of TAPP-Ma provided the base for the self-evaluation of therapeutic effect. The in vitro and in vivo outcomes suggested that the MoS 2 -based multifunctional biomimetic nanotherapeutic platform exhibited synergistic cascade effect for cancer therapy, making it an promising anti-cancer candidate in biomedical clinical application.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Yechen An,Jinglong Han,Xiaoxu Gao,Ruijie Yang,Wenhai Zhang,Ruiyun Ren,Luwei Li,Wenli Jiang,Aijie Wang,Nanqi Ren
The selective separation of organic compounds and inorganic salts is essential for wastewater recycling in fine chemical industries such as pharmaceuticals and pesticides. Membrane separation technology offers a promising solution. However, conventional organic membranes often face challenges related to precise separation and solvent resistance. While graphene oxide (GO) membranes exhibit excellent solvent resistance, their separation performance and structural stability require further improvement. In this study, we developed a GO/few-layer molybdenum disulfide (FLMoS 2 ) membrane via co-assembly. The optimized GO/FLMoS 2 membrane demonstrated a water permeability of 28.4 LMH/bar, approximately four times higher than conventional GO membranes, and achieved a separation factor exceeding 900 for organic/inorganic mixtures—among the highest reported for two-dimensional (2D) membranes. Comprehensive characterization, including low-field nuclear magnetic resonance (LF-NMR), revealed that this superior performance was attributed to controlled defect channels, enhanced interlayer cross-linking, and the intrinsic rigidity of FLMoS 2 , which provided high structural stability and minimal swelling. Moreover, mechanical strength assessments, including critical destructive load force and nanoindentation tests, confirmed significant improvement in structural robustness. As a result, the GO/FLMoS 2 membrane maintained stable water permeability and separation efficiency over 100 hours of continuous operation and six chemical cleaning cycles, demonstrating its potential for sustainable wastewater treatment and resource recovery.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 6
·1-11
·
IF 5.3
Hao Xuanxuan,Liu Zhimin,Zheng Tongtong,Fan Yunfeng,Hu Leqian
A signal-amplified platform was designed to construct a label-free electrochemical aptasensor for lead ions (Pb 2+ ) assay. First, flower-like molybdenum disulfide-supported AuNPs (AuNPs@MoS 2 ) nanocomposites were synthesized and used as substrates for modifying the electrode. The AuNPs@MoS 2 material possessed large surface area and superior biocompatibility, which was beneficial to improve the loading amount of the complementary DNA (cDNA) and amplified the response signal. Importantly, the prepared core–shell Pt@Pd bimetallic nanoparticles (Pt@PdNPs) were used to conjugate with redox marker thionine (Thi) and aptamer (Apt) for further signal amplification; the obtained signal probes (Thi-Pt@PdNPs-Apt) were connected by the cDNA assembled on the electrode through DNA hybridization. Differential pulse voltammetry was performed to monitor the signal of Thi. After incubating of aptasensor with Pb 2+ , the specific recognition of Pb 2 + and Apt resulted in the dissociation of aptamer-cDNA complex, thereby the Thi-Pt@PdNPs-Apt separated from the electrode surface and decreased current response was obtained. The prepared electrochemical sensor exhibited linear response to Pb 2+ in the range 5.0 × 10 −4 –100 nM and a detection limit of 1.0 × 10 −4 nM was achieved. The sensor was applied to the determination of Pb 2+ in actual sample with high sensitivity and accuracy, demonstrating potential applications in heavy metal monitoring. Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Fei Wang,Yao Zhu,Long Qian,Yuhao Yin,Ziyu Yuan,Yuting Dai,Tao Zhang,Dongya Yang,Fengxian Qiu
Precisely detecting organophosphorus pesticides (OPs) is paramount in upholding human safety and environmental preservation, especially in food safety. Herein, an electrochemical acetylcholinesterase (AChE) sensing platform entrapped in chitosan (Chit) on the glassy carbon electrodes (GCEs) decorated with Pt/MoS 2 /Ti 3 C 2 MXene (Pt/MoS 2 /TM) was constructed for the detection of chlorpyrifos . It is worth noting that Pt/MoS 2 /TM possesses good biocompatibility, remarkable electrical conductivity , environmental stability and large specific surface area . Besides, the heterostructure formed by the composite of TM and MoS 2 improves the conductivity and maintains the original structure, which is conducive to improving the electrochemical property . The coordination effect between the individual components enables the even distribution of functional components and enhances the electrochemical performance of the biosensor (AChE-Chit/Pt/MoS 2 /TM). Under optimal efficiency and sensitivity, the AChE-Chit/Pt/MoS 2 /TM/GCE sensing platform exerts comparable analytical performance and a wide concentration range of chlorpyrifos from 10 −12 to 10 −6 M as well as a low limit of detection (4.71 × 10 −13 M). Furthermore, the biosensor is utilized to detect OPs concerning three kinds of fruits and vegetables with good feasibility and recoveries (94.81% to 104.0%). This work would provide a new scheme to develop high-sensitivity sensors based on the two-dimensional nanosheet/laminar hybrid structure for practical applications in environmental monitoring and agricultural product detection.
✓ 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）