ACTA PHYSICO-CHIMICA SINICA
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2025
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IF 13.5
Yuge Fan,Xianliang Fu,Li Zhu,Man Xu
Low-temperature KSCN flux has been used for one-pot fabrication of decorated sulfide-based photocatalysts. However, the reaction system is actually short of S precursor, as it is determined by the decomposition of relatively stable KSCN, which may not be conducive to the production of high-performance catalysts. To this end, a modified KSCN flux route with a dosage of external S source was developed and used for the one-pot preparation of sulfide photocatalyst with 1% MoS 2 /CdS as the prototype. The results indicated that, compared with the sample (MC) prepared in conventional KSCN flux, a highly efficient sample enriched with seldom reported Cd vacancy (V Cd , MC-S) could be readily fabricated under the S 2− -rich environment. Furthermore, both the size of CdS and MoS 2 could be substantially reduced from μm to nm scale as more nuclei could be introduced in the flux, which leads to a few-layer MoS 2 that can be uniformly and tightly anchored on CdS with the average size of only ∼33 nm. Consequently, the resulting MC-S demonstrated an exceptional H 2 evolution activity of 15.01 mmol h −1 g −1 — a significant 6.5-fold improvement over its counterpart (MC) prepared through traditional KSCN flux. The high activity can be mainly ascribed to the introduction of V Cd and the close interface between small CdS and few-layer MoS 2 , which both benefit electron-hole separation. The preparation mechanism of the samples was tentatively compared and discussed from the difference in the nucleation and the development of crystals. We believe that this improved preparation method will also benefit the synthesis of other high-performance sulfide-based photocatalysts.
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高影响因子
JOURNAL OF POWER SOURCES
·
2019
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IF 7.467
Yudi Niu,Xing Qian,Jiahao Zhuang,Hongyu Liu,Linxi Hou
Owing to the modifiable compositions and morphologies, high-efficiency clean energy catalysts with complex functional structures attract wide-ranging attention. Herein, this report focuses on the controllably morphological MoS 2 -doped NiS 2 /Co 3 S 4 nanocubes which are derived from nickel-cobalt Prussian-blue analogs. After annealing in N 2 flow, MoS 2 /Ni-CoS x porous nanocubes are prepared via regulating the reactant ratios (1/2, 1/1 and 2/1) between (NH 4 ) 2 MoS 4 and Ni–Co Prussian-blue analogs. In the synthesis progress, (NH 4 ) 2 MoS 4 is applied as a bifunctional dopant source, which can expediently offer Mo and S elements simultaneously. The quaternary porous MoS 2 /Ni-CoS x (1/1) with the reasonable chemical composition, considerable specific surface area (86.7 m 2 g −1 ) and excellent electrocatalytic property can be selected as the representative counter electrode catalyst in dye-sensitized solar cells. Furthermore, the solar cell with MoS 2 /Ni-CoS x (1/1) exhibits a higher power conversion efficiency (9.80%) than that of Pt (8.19%) under a standard irradiation.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 3
·174
·
IF 5.4
Xu Li,Zhang Jinmi,Hu Maoyuan,Li Jianlong,Li Sheng,Xiong Xiaoli
As crucial biomarkers, the rapid and sensitive detection of dopamine (DA) and uric acid (UA) is essential for disease prevention and diagnosis. In this study, MoS 2 /MoO 2 heteronanorod modified N-doped porous carbon nanofiber (N-PCNFs@MoS 2 /MoO 2 ) sensing electrodes for the simultaneous detection of DA and UA were fabricated by electrostatic spinning coupled with vulcanization reaction. The carbonization treatment of the ZIF-8/PAN precursor endows material with hierarchical pores and a highly conductive network, which significantly increases the specific surface area and active sites and provides a fast electron transport channel for electrochemical reactions. Moreover, the synergistic effect of MoS 2 /MoO 2 optimizes the ion transport pathway and further enhances the electrocatalytic performance. Experimental results show that the electrode exhibites excellent performance for the simultaneous detection of DA and UA. The linear range for DA detection is 0.5–35 µM with a limit of detection (LOD) of 0.038 µM (S/ N = 3), while UA shows a two-segment linear response with linear ranges of 1–20 µM and 20–110 µM, respectively, and a LOD of 0.245 µM (S/ N = 3). This electrode is capable of realizing the simultaneous detection of DA and UA in human serum, showing a broad application prospect in the field of biosensing.
Section
Graphical
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yiyang Zhang,Bo Yu,Wenyuan Guo,Mingzhi Chen,Mingmin Bai,Weixin Li,Jinbo Xue
Tartaric acid creates cooperative S O coordination sites on MoS 2. • Sugarcane bagasse biochar confines and disperses MoS 2 nanosheets. • Spatial confinement accelerates Pb 2+ transport and interfacial enrichment. • DFT confirms strong Pb 2+ binding at S O dual sites with −5.24 eV. Lead (Pb 2+ ) pollution in industrial wastewater poses severe threats to human nervous system and ecological security due to its high toxicity, bioaccumulation and non-biodegradability. Although MoS 2 nanosheets exhibit excellent affinity for Pb 2+ , their adsorption performance is constrained by nanosheet stacking and limited accessible active site separation performance. Herein, tartaric acid (TA)-functionalized MoS 2 nanosheets were confined within a sugarcane bagasse-derived biochar (BC) scaffold to construct TA-MoS 2 /BC. The porous carbon framework suppresses MoS 2 nanosheet restacking and creates accessible mesoporous channels for Pb 2+ transport, while TA introduces oxygen-containing groups that cooperate with sulfur sites for strong Pb 2+ binding. TA-MoS 2 /BC exhibited a high Langmuir adsorption capacity of 1073.27 mg·g −1 , together with a kinetic adsorption capacity of 726.60 mg·g −1 , which was 1.47 and 2.44 times higher than pure TA-MoS 2 and raw biochar, respectively. After five adsorption-desorption cycles, the composite retained 77.8% of its initial adsorption capacity, demonstrating satisfactory reusability. XPS and DFT analyses confirmed that adjacent S/O dual sites dominated Pb 2+ capture, showing a low adsorption energy of −5.24 eV and charge transfer of 1.068 e. Intraparticle diffusion analysis revealed a multi-stage mass-transfer process, and TA-MoS 2 /BC showed the highest initial diffusion rate constant of 48.25 mg·g −1 ·h -1/2 , confirming that the confined porous structure promoted Pb 2+ migration toward internal active sites. This work provides a confinement-coordination dual-regulation strategy for Pb 2+ removal while offering a value-added route for converting sugarcane bagasse waste into a functional carbon scaffold.
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ELECTROANALYSIS
·
2022
·Vol. 35
·期 3
·e202200194
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IF 3.077
Nguyen Thi Dieu Thuy,Guo Zhao,Xiaochan Wang,Emmanuel Awuah,Litao Zhang
In this study, an ion-selective electrode with a sensitive ion-to-electron transducer composed of porous laser-induced graphene (LIG) and MoS 2 (LIG-MoS 2 /ISE) was fabricated to measure the potassium ion concentration in a greenhouse nutrient solution for soilless culture. Additionally, a more effective and low-cost method was proposed for the large-batch production and manufacture of potassium ion-selective electrodes (K + -ISEs) using the direct laser writing technique, which differs considerably from existing methods. Moreover, the sensing mechanism of the proposed LIG-MoS 2 /ISE for potassium ion detection was investigated. The morphology and physical properties of the LIG-MoS 2 /SC-K + -ISEs were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy and energy-dispersive spectroscopy. Potentiometric measurements, chronopotentiometry, potentiometric water layer tests, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used to evaluate the analytical performance of the newly developed K + -ISEs. A Nernstian slope of 30.1 mV/decade for the activity of potassium ions in a concentration range from 10 −7 to 10 −2 M was determined. The EIS and chronopotentiometry results revealed that the LIG-MoS 2 /SC-K + -ISE had a larger resistance and double-layer capacitance than the LIG/SC-K + -ISE. The ion-selective membrane (ISM) and solid-contact layer did not have any water film between them, according to the potentiometric water layer test. The results proved that the LIG-MoS 2 nanocomposite could possibly be used as a sensitive ion-to-electron transducer to fabricate K + -ISEs. The K + -ISE fabrication method using the direct laser writing technique had a higher efficiency, enabling its broad application prospects in agriculture.
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MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Shipeng Tang,Chunlei Yu,Liangliang Qian,Chaoqun Zhou,Zhengan Zhen,Bin Liu,Xiumei Cheng,Rumei Cheng
We designed and evaluated a high-performing and biocompatible sensing platform to quantitatively detect glutathione (GSH) in the intracellular environment. To this end, we constructed a fluorescent switch using nitrogen-doped graphene quantum dots (N-GQDs) as fluorescent probes and MoS 2 nanoflowers as the GSH recognition unit. Fluorescence emission of N-GQDs was first switched OFF when combined with MoS 2 nanoflowers due to the fluorescence resonance energy transfer (FRET) mechanism. It was readily switched ON by reducing MoS 2 to Mo 3+ in the presence of GSH, enabling the recovery of fluorescent signal. We performed experiments to test the dependence of the sensing platform fluorescence intensity on the concentrations of GSH in the range of 0.4–4.4 mM. The detection limit was 2.47 μM. The monitoring of concentrations of GSH in human retinal pigment epithelium cells (ARPE-19) samples revealed excellent sensing performance with facilitated visualization of the probe, suggesting that the unique sensing strategy has the exceptional anti-interference property for assessing the intracellular GSH quantity in diagnostics and biomedical research. The OFF/ON switch for the detection of GSH was explored to create a XNOR molecular logic gate.
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CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Hongrui Zhu,Chun Zhang,Kefeng Xie,Xingang Li,Guangfu Liao
Defect engineering, exposed crystal facets, and Z-scheme mechanism are promising strategies to greatly promote photocatalytic performance. Herein, the ZnFe 2 O 4 (ZFO) with Ag-doping, oxygen vacancies and different exposed crystal facets was firstly prepared by a facile hydrothermal strategy. Subsequently, the MoS 2 flowers were in-situ grown on the surface of the prepared Ag-doping ZFO (Ag-ZFO) for fabricating MoS 2 /Ag-ZFO Z-scheme heterojunction by hydrothermal strategy. Due to the synergistic effects of defect engineering (Ag-doping and oxygen vacancies), exposed crystal facets, and Z-scheme mechanism, the photocatalytic activity for tetracycline degradation was evidently improved. More importantly, the prepared MoS 2 /Ag-ZFO (T) also show excellent photocatalytic performance under real environment water. This work offers a new insight for future design and development of highly active photocatalysts.
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Nanoscale
·
2018
·Vol. 10
·期 45
·21298-21306
·
IF 7.233
Yaping Zhong,Fengfeng Xue,Peng Wei,Ruohan Li,Chunyan Cao,Tao Yi
We report a facile and sensitive method for the detection of alkaline phosphatase (ALP) activity in serum and live cells using molybdenum disulfide quantum dots (MoS2 QDs) based on the Inner Filter Effect (IFE). In the present work, water soluble MoS2 QDs with bright green fluorescence were synthesized through direct ultrasonic exfoliation of MoS2 powder in 85 vol% aqueous ethanol solution. p-Nitrophenylphosphate (PNPP) was employed to act as an ALP substrate, and its enzyme catalytic product (p-nitrophenol (PNP)) functioned as a powerful absorber in the IFE to influence the excitation of MoS2 QDs. PNPP was transformed into PNP in the presence of ALP, leading to the transition of the absorption peak from 310 nm to 405 nm and therefore resulted in a complementary overlap between the absorption of PNP and the excitation of MoS2 QDs. The fluorescence of MoS2 QDs was quenched due to the significant weakening of the excitation of MoS2 QDs by competitive absorption between QDs and PNP. A good linear relationship was obtained from 0 to 5 U L−1 (R2 = 0.9919) using the present IFE based sensing strategy with the lowest detection activity of 0.1 U L−1. The proposed sensing approach was successfully applied to ALP sensing in serum samples and ALP inhibitor investigation, as well as in ALP cell imaging.
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高影响因子
CARBON
·
2025
·
IF 11.6
Huiyang Jiang,Ying Huang,Xiaoxiao Zhao,Meng Zong
As a representative transition metal dichalcogenide (TMD), MoS 2 exhibits a tunable bandgap, facile defect generation, controllable electrical conductivity, and high stability, positioning it as a promising dielectric material. However, its limited single-cycle dielectric loss capacity and impedance mismatch hinder its standalone microwave absorption performance. To address these limitations, compositing MoS 2 with magnetic components has been demonstrated as a viable strategy to optimize impedance matching and enhance absorption efficiency. This study innovatively developed a sandwich-structured composite film featuring polyacrylonitrile-derived carbon nanofibers (CNF) as flexible scaffolds, synergistically integrated with magnetic CoFe 2 O 4 nanoparticles and dielectric MoS 2 nanosheets. Through electrospinning combined with pressure-assisted thermal molding processes, precise regulation of the CNF-(MoS 2 /CoFe 2 O 4 ) (CMC) heterointerfaces was achieved. The CMC exhibits superior microwave absorption through multiple loss mechanisms. Two-dimensional (2D) MoS 2 nanosheets facilitate polarization relaxation and dielectric loss, while nano-sized CoFe 2 O 4 particles induce eddy current loss. Additionally, the high-aspect-ratio CNF constructs a three-dimensional (3D) conductive network that enhances conduction loss. Moreover, the uneven charge distribution at the heterogeneous interface induces polarization relaxation losses. Experimental results indicate that the optimized CMC sample achieves a minimum reflection loss (RL min ) of −45.6 dB at 14.2 GHz, with a matching thickness of 3.0 mm. This sample also exhibits an effective absorption bandwidth (EAB) of 7.8 GHz (ranging from 10.2 to 18 GHz) and a thermal conductivity of 0.163 W/(m·K). This research introduces a novel thin-film material design paradigm for the synergistic optimization of electromagnetic protection and thermal management in microelectronics. Furthermore, the layered composite strategy paves the way for the development of multifunctional microwave absorption materials.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·
IF 4.229
Wenqing Lu,Ye Song,Meiling Dou,Jing Ji,Feng Wang
A hierarchically porous MoS 2 on Ni 3 S 2 nanorod array on Ni foam (MoS 2 /Ni 3 S 2 /NF) was firstly fabricated through a simple microwave-assisted hydrothermal method , and then followed by electrochemical deposition approach in which MoS 2 /Ni 3 S 2 /Ni foam is decorated with CoS (CoS MoS 2 /Ni 3 S 2 /NF). In contrast to conventional hydrothermal approach, microwave irradiation accelerates the synthesis of MoS 2 /Ni 3 S 2 /Ni foam from time of >20 h–2 h. The characterization of CoS MoS 2 /Ni 3 S 2 /NF by scanning electron microscope (SEM) and high resolution transmission electron microscope (HRTEM) indicate that a whole scale of 1D the Ni 3 S 2 nanorods were hierarchically integrated with MoS 2 and CoS nanosheets . The as-synthesized CoS MoS 2 /Ni 3 S 2 /NF hybrid not only endows the ease transport of electrons along Ni 3 S 2 nanorods to Ni foam, but also accommodates maximal exposure of active edge sites to the reactants through hierarchically porous CoS doped MoS 2 nanosheets , accomplishing the promoted kinetics and activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). By electrochemical measurements such as linear sweep voltammetry (LSV) and electrochemical impedance spectroscope (EIS), we find that the CoS MoS 2 /Ni 3 S 2 /NF hybrid shows markedly enhanced electrochemical performance for both HER and OER. Specifically, the optimal CoS MoS 2 /Ni 3 S 2 /NF 8C possesses the low overpotentials (η 10 ) of 85 and 225 mV at current density (|j|) of 10 mA cm −2 in 1.0 M KOH and the small 62.3 and 46.1 mV dec −1 Tafel slope for HER and OER, respectively, outperforming those of most of the current noble metal-free electrocatalysts . These results highlight the fact that CoS MoS 2 /Ni 3 S 2 /NF is a high-performance, noble-metal-free electro-catalyst, and provide a potential avenue toward achieving an enhanced electrocatalytic activity towards both in HER and OER. Yet the duration of the as prepared catalyst in OER still need to be improved.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Rui Wang,Yimin Tang,Yanan Lu,Zhiyu Wang,Xin Jiang,Bing Zhao,Libin Yang
Constructing a heterogeneous structure with the combined contribution of electromagnetic (EM) and chemical (CM) mechanisms, while enabling all components to contribute to each mechanism, is an effective strategy for developing new high-performance surface-enhanced Raman scattering (SERS) substrate. In this work, a novel 3D/1D MoS 2 flower-like microspheres@Au nanowires (MoS 2 FMs@Au NWs) heterojunction SERS matrix platform is successfully developed through morphology regulating and interface engineering strategies. The enhancement factor of SERS matrix is as high as 3.97 × 10 9 . The theoretical simulations and experiments reveal the combined contribution of EM and CM mechanisms. The dual EM effects (Mie resonance triggered by 3D MoS 2 FMs and hotspot effect of high-density Au NWs customized by highly ordered MoS 2 ) and the multidimensional CM contributions (high-efficiency carrier separation of MoS 2 triggered by heterostructure and high carrier utilization rate from hot electron excitation of Au NWs) can be synchronously achieved for boosting SERS activity of the heterojunction. More meaningfully, the developed SERS matrix can realize an ultra-sensitive detection for trace fungicide residues (crystal violet and malachite green) in real water system. This discovery provides new insights and perspectives for developing novel function-customized SERS substrates, aiming to advance the practical application of SERS technology.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2020
·
IF 6.155
Xuepeng Ni,Zhe Cui,Ning Jiang,Huifang Chen,Qilin Wu,Anqi Ju,Meifang Zhu
The electrode materials with high pseudocapacitance can enhance the rate capability and cycling stability of lithium-ion storage devices. Herein, we fabricated MoS 2 nanoflowers with ultra-large interlayer spacing on N-doped hollow multi- nanochannel carbon nanofibers (F 2 -MoS 2 /NHMCFs) as freestanding binder-free anodes for lithium-ion batteries (LIBs). The ultra-large interlayer spacing (0.78∼1.11 nm) of MoS 2 nanoflowers can not only reduce the internal resistance, but also increase accessible active surface area, which ensures the fast Li + intercalation and deintercalation. The NHMCFs with hollow and multi-nanochannel structure can accommodate the large internal strain and volume change during lithiation/delithiation process, it is beneficial to improving the cycling stability of LIBs. Benefiting from the above combined structure merits, the F 2 -MoS 2 /NHMCFs electrodes deliver a high rate capability 832 mA h g −1 at 10 A g −1 and ultralong cycling stability with 99.29 and 91.60 % capacity retention at 10 A g −1 after 1000 and 2000 cycles, respectively. It is one of the largest capacities and best cycling stability at 10 A g −1 ever reported to date, indicating the freestanding F 2 -MoS 2 /NHMCFs electrodes have potential applications in high power density LIBs.
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