JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·Vol. 142
·期 39
·e57531
·
IF 2.8
Dawei Gao,Haixiang Wang,Qiaoli Lu,Chao Ye,Wang Lili
Piezoelectric sensors are critical components in advancing smart electronic devices, offering significant potential for energy harvesting and self-powered applications in flexible and wearable technologies. Poly(vinylidene fluoride) (PVDF) and molybdenum disulfide (MoS 2 ) are recognized for their exceptional piezoelectric properties, with monolayer MoS 2 effectively enhancing the piezoelectric response. This study innovatively fabricates PVDF/MoS 2 composite films via electrospinning, directly inducing polar β -phase crystal formation in PVDF and significantly enhancing piezoelectric performance. Furthermore, PVDF micro- and nanoparticles were electrostatically deposited onto the PVDF/MoS 2 films, resulting in a P-PVDF/MoS 2 composite with enhanced mechanical and piezoelectric properties. Under a mechanical force of 3 N at 2 Hz, the fabricated sensor achieved an output voltage of 5 V, a short-circuit current of 0.08 μA, and a power density of 3.5 mW/m 2 , representing increases of 552% in voltage, 33% in current, and 192% in power density compared to pure PVDF sensors. The highly flexible composite demonstrates significant potential as a wearable self-powered sensor and energy harvester, addressing applications in artificial intelligence and wireless technologies.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Zhaoxing Li,Ming Xu,Ting Wang,Yating Yang,Yuanze Li,Mei Liu,Yubo Liu,Ming Feng
Exploring low-cost and highly efficient electrocatalysts with bifunctional activities of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is practically essential for overall water splitting. Nevertheless, perfectly balancing the catalytic behavior between HER and OER continues to be a great challenge due to their distinct conducting behaviors and free energies. Herein, an advanced bifunctional electrocatalyst based on P-doped defective MoS 2 /MoO 2 heterostructure integrated onto highly conductive carbon cloth has been constructed for overall water splitting in acidic media. By reasonably controlling reaction conditions, the MoS 2 /MoO 2 heterostructure can be rationally constructed and the corresponding sulfur vacancies can be well optimized. Meanwhile, the abundant oxygen vacancies can be also created during the heat transformation processes. Benefiting from the unique structural features that favor the active species adsorption and electron transfer, the resultant A-P-M-3/CC catalyst exhibits exceptional bifunctional electrocatalytic activity, with low overpotentials of 67 and 104 mV at 10 mA cm −2 for HER and OER, respectively. When coupled in a two-electrode electrolyzer, A-P-M-3/CC delivers 10 mA cm −2 at a low cell voltage of 1.44 V with good stability, surpassing most of similar electrocatalysts. This work offers a novel avenue for water splitting catalyst optimization.
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高影响因子
Nanoscale
·
2024
·Vol. 16
·期 45
·21031-21038
·
IF 5.8
Hanwen Hu,Yiyan Liao,Shanshan Tan,Chen Li,Jun Tang,Kun Zheng,Lei Yang
Ag2Se has emerged as a promising n-type thermoelectric material; however, its application is limited mainly due to the strongly coupled charge carrier and phonon transport. Enhancing phonon scattering by constructing interfacial complexes often results in low carrier mobility due to its strong carrier scattering resulting from the high energy barrier at the multiphase interface. Inspired by the cell membrane with selective permeability, we construct bio-mimic grain boundaries with TiO2 and MoS2 co-decoration in Ag2Se to decouple electron scattering from strong phonon scattering. The nanostructured TiO2 with a high dielectric constant screens the interfacial Coulomb potential, ensuring efficient carrier transport and reducing the grain boundary barriers, while the few-layer MoS2 provides significant phonon scattering to further reduce the thermal conductivity. This method effectively enhances the zT value of Ag2Se by as much as 60% and also can significantly enhance the theoretical output performance of the thermoelectric device, which highlights the effectiveness of the bio-mimic grain boundary engineering strategy.
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RSC Advances
·
2016
·Vol. 6
·期 78
·74394-74399
·
IF 3.289
Ping Du,Yuanzhi Zhu,Junyang Zhang,Danyun Xu,Wenchao Peng,Guoliang Zhang,Fengbao Zhang,Xiaobin Fan
Conversion of solar energy to hydrogen requires efficient, low-cost and earth-abundant H-producing photocatalysts. Herein, a novel noble metal-free photocatalyst 1T–MoS2/CdS NRs was prepared via a simple method. The 1T–MoS2/CdS NRs hybrid showed the highest photocatalytic activity when the optimized weight ratio of metallic 1T–MoS2 to CdS NRs is 10 wt% in a lactic acid solution under visible light. A 794.93 μmol h−1 H2 evolution rate of the 1T–MoS2/CdS NRs hybrid reached not only 35 times improvement than pure CdS NRs but also 4.5 times enhancement than the 2H–MoS2/CdS NRs hybrid. The relative mechanism has been investigated. 1T–MoS2/CdS NRs interfaces could form ohmic contact with very low contact resistances to promote photoexcited electron transfer, which was different from the p/n junction on the 2H–MoS2/CdS NRs hybrid.
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JOURNAL OF RAMAN SPECTROSCOPY
·
2017
·Vol. 49
·期 2
·245-255
·
IF 2.969
Xiu Liang,Xiao-Juan Zhang,Ting-Ting You,Nan Yang,Guang-Sheng Wang,Peng-Gang Yin
MoS 2 , a novel inorganic graphene analogues with typical two-dimensional structure, has attracted increasing interest in various fields. MoS 2 -based hybrid plasmonic structures have been extensively investigated as higher quality surface enhanced Raman scattering (SERS) substrates. Herein, we have designed a three-dimensional (3D) MoS 2 nanospheres (NSs) based hybrid nanostructure as SERS sensor by decorating Au nanoparticles (NPs) on the surface of 3D MoS 2 -NSs (3D MoS 2 -NS@Au-NPs). 3D MoS 2 -NSs acts as (a) a stable scaffold for Au NPs decoration via microwave-irradiation hydrothermal process, (b) a chemical mechanism source for Raman enhancement, and (c) a 3D spatial structure for generation of more effective hot spots due to Au coupling effect and supply larger surface area for adsorbing probe molecules. The 3D MoS 2 -NS@Au-NPs hybrid structure exhibits 56-fold improvement on enhancement factor compared to two-dimensional MoS 2 -NST@Au-NPs hybrid structures. SERS performance was easily and effectively optimized with the tuning of the density and sizes of Au NPs. The optimized 3D MoS 2 -NS@Au-NPs was applied as SERS sensor for melamine detection in milk. Quantitative detection was realized in the range of 1 ppb–10 ppm with a linear coefficient of .997. Excellent sensitivity of 1 ppb and uniformity of 10.12% relative standard deviation was achieved, which could meet the demand for melamine detection as prescribed by the U.S. Food and Drug Administration.
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ENVIRONMENTAL RESEARCH
·
2022
·
IF 8.431
Wenbin Hu,Ziwen Chang,Aiping Tang,Yun Wei,Difan Fang,Xiang Lu,Penghui Shao,Hui Shi,Kai Yu,Xubiao Luo,Liming Yang
Supported-adsorbents growing on the substrate in situ are equipped with the advantages of high adsorption capacity, excellent regeneration performance, and adaptability to complex wastewater. However, the effects of substrate on the adsorption properties of supported-adsorbent are rarely considered, which will hinder its development and scale-up applications. In this study, the influences of different substrates (Ti, Mo, W, CC) on the Ag + adsorption behavior of supported-MoS 2 adsorbents were investigated. The adsorption kinetics , adsorption mechanism, and the renewability of these supported-MoS 2 were compared orderly. As a result, MoS 2 grown on a tungsten substrate (MoS 2 –W) exhibits a remarkable adsorption capacity for Ag + (1.98 mg cm −2 and 598.80 mg g −1 ), which is 6.38–33 times more than the other three supported-MoS 2 . Moreover, the MoS 2 –W also possesses an ultrahigh distribution coefficient (24.80 mL cm −2 ) for Ag + , and the selection coefficient can reach 1984. XRD and electrochemical characterization analysis indicated that Ag + adsorption performance of supported-MoS 2 is positively correlated with the degree of its amorphous structure. Substrate W with the terrific electrical properties which may facilitate the disordered growth of MoS 2 , resulting in more active sites exposed, and endow MoS 2 –W with outstanding Ag + capture performance. Finally, the supported-MoS 2 retains a high removal efficiency of Ag + after 5 cycles of adsorption and desorption. This study provides a novel perspective for promoting the practical application of supported-sorbents to recycle heavy metals.
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Analytical Methods
·
2019
·Vol. 11
·期 10
·1353-1360
·
IF 2.378
Xiaoyun Lin,Yanfang Wang,Miaomiao Zou,Yongnian Ni
Terbutaline sulfate (TBS) is a β2-adrenoceptor agonist, overdoses of which can cause serious harm and even be life-threatening to humans. Herein, we demonstrate a simple and facile method for the preparation of a molybdenum disulfide–gold nanoparticle composite (MoS2/AuNPs). The obtained MoS2 and MoS2/AuNPs were characterized and investigated by X-ray powder diffraction, scanning electron microscopy, and transmission electron microscopy. An MoS2/AuNPs-modified glassy carbon electrode (MoS2/AuNPs/GCE) was constructed using the dropping method and used to study the electrochemical behavior of TBS. The results indicated that the sensor had excellent electrocatalytic activity for TBS, with detection sensitivity for TBS more than 100 times higher compared with the bare GCE. With the successive addition of TBS, the peak current of the differential pulse stripping voltammogram (DPSV) of TBS was proportional to its concentration within a certain range, with a linear range of 1–85 nmol L−1 and limit of detection (LOD) of up to 0.47 nmol L−1. Furthermore, the modified electrode showed good stability, reproducibility, and anti-interference ability, meaning that it could be used to detect TBS in real samples.
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高影响因子
CRYSTENGCOMM
·
2024
·Vol. 26
·期 27
·3694-3703
·
IF 2.6
Zi-Qiao Li,Qi-Bo Wang,Qin-Qin Xu,Zhen-Hua Han,Tong Cheng,Jian-Zhong Yin
Two-dimensional transition metal dichalcogenide heterostructures are potential candidates for next-generation semiconductor materials due to their extremely thin atomic structure and better optoelectronic properties. As a common method for growing heterostructures, chemical vapor deposition (CVD) can synthesize both lateral and vertical heterostructures. However, the controlled synthesis of heterostructures still faces challenges due to fewer studies about the evolution of heterostructure morphology under different conditions. In this study, heterostructures with sharp interfaces are fabricated via the vapor–liquid–solid (VLS) growth-based CVD technique using mixed sodium molybdate and sodium tungstate solutions. By optimizing a series of growth parameters, the modulation of MoxW1−xS2/MoS2 heterostructure morphology is achieved. In addition, lateral and vertical MoxW1−xS2/MoS2 heterostructures are synthesized by changing the molybdenum–tungsten molar ratio. This study provides a new strategy for synthesizing heterostructures with different growth ways.
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高影响因子
ANALYTICA CHIMICA ACTA
·
2018
·
IF 5.123
Lian Ma,Qiaran Zhang,Chao Wu,Yue Zhang,Lintao Zeng
Composite nanomaterials are particularly useful and offer many excellent opportunities for electrochemical sensing application. Depending on the high catalytic activity of bimetallic nanoparticles , the large specific surface area, abundant active edges and co-catalytic function of MoS 2 nanosheets , we, for the first time, prepared a novel PtNi bimetallic nanoparticles loaded MoS 2 nanosheets (PtNi@MoS 2 ) hybrid material by a co-reduction method for the electrochemical sensing application. The nanocomposite is characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS), and then casted on a bare glassy carbon electrode (GCE) to fabricate an electrochemical sensor (PtNi@MoS 2 /GCE). The electrochemical investigation showed that the sensor performed good selectivity and wide linear ranges for the simultaneous detection of dopamine (0.5–150 μM) and uric acid (0.5–600 μM). And the detection limits were down to 0.1 μM (S/N = 3) for both analytes.
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高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Shiwei Song,Yanhui Wang,Shuyu Zhou,Hongwei Gao,Xueqing Tian,Yungang Yuan,Wei Li,Jianbing Zang
Seawater is more favorable than freshwater in large-scale hydrogen production by electrolysis as it is considered to be the most plentiful natural resource. However, chloride ions with high concentrations in the electrolyte may easily cause corrosion to electrodes or undesirable side reactions during the implementation of seawater electrolysis, thereby degrading the overall system’s efficiency. Therefore, it is necessary to develop an electrocatalyst with excellent catalytic activity and corrosion resistance in order to achieve high-efficiency seawater electrolysis. In this study, a three-dimensional heterogeneous architecture of (FeNi)9S8 nanosheets uniformly decorated with an amorphous MoS2 layer on Ni-Fe foam (MoS2-(FeNi)9S8/NFF) was successfully prepared via one-step hydrothermal vulcanization. Benefiting from the strong interaction at the heterogeneous interface, effective charge transfer, and the enhanced corrosion resistance by MoS2-(FeNi)9S8 coupling, the self-supported MoS2-(FeNi)9S8/NFF electrocatalyst exhibited superior catalytic activity and stability toward overall fresh/seawater splitting. Moreover, it required a low battery voltage of 1.57 and 1.62 V to reach 50 and 100 mA cm–2 in an alkaline natural seawater electrolyte, respectively, and possessed impressive durability up to 72 h, exceeding the pair of Pt/C||IrO2. Accordingly, this study provides a route for the preparation of corrosion-resistant electrocatalysts of hydrogen production by seawater electrolysis.
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高影响因子
JOURNAL OF POWER SOURCES
·
2017
·
IF 6.395
Lan Sun,Tao Wang,Long Zhang,Yunjin Sun,Kewei Xu,Zhengfei Dai,Fei Ma
The rational design and preparation of earth-abundant, stable and efficient electrocatalysts for hydrogen production is currently the subject in extensive scientific and technological researches toward the future of a clean-energy society. Herein, a mace-like MoS 2 /NiCo 2 S 4 hierarchical structure is designed and synthesized on carbon fiber paper via a facile hydrothermal method , and evaluated as electrocatalyst for hydrogen evolution reaction . In the MoS 2 /NiCo 2 S 4 /carbon fiber paper hierarchical structures, MoS 2 nanosheets are dispersively distributed on the surface of NiCo 2 S 4 nanowires, which provides an enlarged surface area , abundant interfaces and catalytic active sites. As for hydrogen evolution reaction , such MoS 2 /NiCo 2 S 4 /carbon fiber paper heterostructures give rise to a hydrogen evolution reaction catalytic current density of 10 mA cm −2 with a lower overpotential of 139 mV and a smaller Tafel slope of 37 mV·dec −1 than those of MoS 2 /carbon fiber paper and NiCo 2 S 4 /carbon fiber paper counterparts, exhibiting a prominent electrocatalytic performance. Moreover, the electrocatalytic properties change little after 5000 CV cycles and continual electrolysis for 12 h without obvious decay, respectively, demonstrating high durability and stability. The excellent hydrogen evolution reaction performances endow the hierarchical configuration MoS 2 /NiCo 2 S 4 /carbon fiber paper with promising alternative in HER and other related renewable energy fields.
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SCIENCE OF THE TOTAL ENVIRONMENT
·
2018
·
IF 4.61
Hanna Pei,Jing Wang,Qingfeng Yang,Weixia Yang,Na Hu,Yourui Suo,Daohong Zhang,Zhonghong Li,Jianlong Wang
Lead(II) is a highly toxic upon accumulation in the human body and a thorough cleanup of this pollutant in water resources has become a rising worldwide concern. In this study, multi-functional nitrogen-doped carbon-MoS 2 (NC-MoS 2 ) nanohybrid composite was successfully synthesized by a step-by-step approach and applied as an effective heavy metal ions adsorbent. Scanning electron microscopy and energy dispersive X-ray spectrometer analysis presents multilayer irregular nanosheets and reveals the uniform distribution of C, N and O elements in the fabricated nanomaterials , respectively. Powder X-ray diffraction, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirm the functionalization of oxygen-containing functional groups arising from the nitrogen-doped carbon. Particularly, the NC-MoS 2 possesses an excellent adsorption capacity (439.09 mg g −1 ) for Pb(II), which attributes to the integrated physicochemical adsorption resulting from the oxygen-containing functional groups on the surface of nanohybrid composites. The as-prepared NC-MoS 2 exhibits good chemical stability and can be reused 7 times with a slight fading over 80% during cycling, which is essential for its practical applications. All of these demonstrate that NC-MoS 2 can be an efficient material for selectively removal of Pb(II), which suggest its great potential in the utilization of environmental cleanup .
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