JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
·
IF 4.6
Jianghao Gan,Qing Du,Hui Qiao,Pinghua Tang,Delong Li,Xiang Qi
Balancing high photoelectric response and flexible adaptability is a key research focus for MoS₂-based hydrogel photodetectors. In this study, a high-performance flexible MoS₂/polyvinyl alcohol (PVA) composite hydrogel photoelectrochemical (PEC) detector was successfully developed via constructing a synergistic dual network of hydrogen bonds and borate ester bonds. Hydrogen bonds formed between MoS₂ nanosheets and PVA effectively inhibit nanosheet agglomeration, thereby establishing continuous pathways for photogenerated carrier transport. Dynamic borate ester bonds formed between PVA and borax endow the device with outstanding flexible adaptability, including excellent stretchability, self-healing capability, and bending stability. Experimental results show that under a bias of 0.7 V and illumination intensity of 120 mW cm −2 , the device achieves a photocurrent density of 2.114 μA cm −2 . After 300% tensile strain, the photocurrent density only decreases by 25.9% compared to the unstretched state. Stable photoresponse is maintained across bending angles from 0° to 60°, and approximately 96.7% of the photoelectric performance is recovered after self-healing. This work clarifies the correlation between bonding interactions and photoelectric performance in flexible photodetectors, providing a novel design strategy for hydrogel-based flexible optoelectronic devices.
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PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Huawei Li,Chen Huang,Mahmoud Farghaly,Dengfeng Kuang,Shibo Yan,Yan Xiao,Xueliang Xiao
This work presents a multifunctional composite film with integrated photothermal and electrothermal conversion, electromagnetic interference (EMI) shielding, and active de-icing capabilities, fabricated via electrospinning combined with layer-by-layer (LbL) self-assembly. Polydopamine (PDA)-modified thermoplastic polyurethane nanofiber membranes (PDA@TPU) served as the substrate. Synergistic interaction with sodium alginate (SA) enabled the layer-by-layer self-assembly of molybdenum disulfide (MoS₂) and carbon nanotubes (CNTs) onto the substrate surface. Subsequent Ca 2+ drop-addition reaction cross-linking ultimately formed a robust and stable coating. The PDA and SA layers significantly enhance interfacial adhesion between the conductive fillers (MoS₂/CNTs) and the polymer matrix, ensuring mechanical durability and efficient thermal conversion. The resulting five-layer film exhibits excellent performance: a photothermal temperature rise of 69.2 °C under 1 sun irradiation (100 mW/cm 2 ), electrothermal heating exceeding 80 °C at 7 V, and an EMI shielding effectiveness of 33.8 dB in the X-band. Notably, this film exhibits outstanding durability, with its electrical conductivity remaining virtually unchanged after repeated washing. Under dual photothermal and electrothermal stimulation (1 sun +7 V), the film can completely melt surface ice within 60 s, effectively preventing electromagnetic shielding efficiency degradation caused by ice accumulation. The layer-by-layer self-assembly technique based on PDA and SA systems offers a novel strategy for fabricating multifunctional composite films with outstanding comprehensive properties, demonstrating broad application prospects.
研究领域:
材料科学
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纳米复合材料
·
功能高分子材料
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电磁学
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热管理工程
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Xiangyu Teng,Shengkun Xu,Xuehao Feng,Zhizheng Gao,Zhixing Ge,Bentao Zou,Wenguang Yang
The movement patterns of diverse organisms inspire the design of flexible actuators. We hypothesized that mimicking biological structures could endow soft robots with versatile functions. In this research, we engineered a biomimetic light - driven swimming soft robot. By emulating the mechanics of boat paddles and elephant trunks, we developed a flexible paddle and a dexterous gripper. This enables the robot to effectively grasp and transport small objects. We further hypothesized that introducing molybdenum disulfide (MoS₂) into hydrogels could render them photoresponsive. We successfully created a temperature sensitive, photoresponsive composite hydrogel. Its volume can be precisely controlled through light exposure, mimicking the contraction and relaxation of muscles. The paddling motion and gripping functions of the bionic gripper are achieved by modulating the irradiation with Near-Infrared (NIR) light. This study offers significant insights into the development of light-driven soft robotic systems.
研究领域:
软体机器人
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材料科学
·
仿生学
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高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Shou-Cong Dong,Rui Zeng,Hao Zhang,Shu-Ting Zhang,Pei-Pei Chen,Dong-Lin Zhao
Transition metal sulfides (TMSs) exhibit high theoretical capacity as anode materials for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). However, their practical application is severely hindered by poor cycling stability. In this study, Co 3 S₄/1T-MoS₂ heterostructure was confined on nitrogen-doped carbon nanosheets composite (Co 3 S₄/1T-MoS₂@NC) by high-temperature pyrolysis and hydrothermal sulfidation, using ZIF-67 as the precursor, modulated by a small-molecule carbon source. The heterostructure between Co 3 S₄ and 1T-MoS₂ synergistically enhances the electrical conductivity and rapid diffusion kinetics. The aggregation of MoS 2 nanosheets at the interface effectively enhances the electrochemical performance of the material, while the nitrogen-doped carbon generated at the interface provides additional active sites. This interface engineering and the formation of heterostructures endow the material with improved ion storage capabilities. The composite remains high specific capacities of 1192.2 mAh g⁻¹ for LIBs and 615.3 mAh g -1 for SIBs after 100 cycles at 0.1 A g -1 . The combination of enhanced charge transport and structural stability highlights the potential of the heterostructure strategy for next-generation high-performance alkali metal-ion batteries.
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Surfaces and Interfaces
·
2023
·
IF 6.2
Gaoqiang Niu,Yi Zhuang,Yushen Hu,Zong Liu,Bo Wu,Fei Wang
Due to the complicated gas-sensing process on the surface of metal oxide semiconductors (MOS), it is hard to accurately characterize the transient changes of MOS gas sensor. This paper introduces a modified Hill equation to quantitatively analyze the instantaneous resistance of MOS gas sensors operating in temperature-pulsed operation mode, to extract the gas-sensing dynamic features and key parameters for the selective identification of various volatile organic compounds (VOCs) gases (such as ethanol, formaldehyde, toluene and acetone) by machine learning algorithms. The sensors were tested with the pulse-mode at different temperatures for multiple gases. The characteristic features of the sensing process during the pulse-on period were investigated. Key parameters were extracted via the modified Hill equation, which have shown obvious dependence on the gas type and concentration. Excellent selectivity for the VOC gases was attained at low concentrations of 500 ppb thanks to the equation's further integration with the principal component analysis (PCA) approach. The incorporation of this modified Hill equation in temperature-pulsed operation mode provides the vital features for the possible applications of MOS gas sensors with the emerging machine learning algorithm.
研究领域:
传感器技术
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环境科学
·
化学
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高影响因子
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
·
2019
·
IF 3.176
Wen Cui,Xiaoli Kang,Xiaoying Zhang,Zhou Zheng,Xudong Cui
Recently, Metal-organic framework (MOF) has attracted general attention as self-sacrificial template to produce metal oxide semiconductor (MOS) for gas sensing. In this work, we fabricated a porous cubic microstructure of Co 3 O 4 through the facile pyrolysis of ZIF-67. The obtained Co 3 O 4 sustained a similar cubic morphology with ZIF-67 template, but much improved pore structure was achieved. Moreover, we attempted to modify the Co 3 O 4 with Au nanoparticles . Through a facile post-synthesis adsorption & pyrolysis, the Au nanoparticles with an average size of 15–20 nm were evenly dispersed on the surface of Co 3 O 4 . Then the obtained samples were investigated for acetone gas-sensing. Results showed that both Co 3 O 4 and its Au doped structure could be used for acetone detection, while due to the existence of metal-semiconductor heterojunction and the catalysis and spillover functions of Au nanoparticles, the prepared Au/Co 3 O 4 composite showed much improved acetone response and much shortened response-recovery time than that of the bare Co 3 O 4 structure.
研究领域:
材料科学
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纳米技术
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化学传感器
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气体传感
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高影响因子
ACS Sustainable Chemistry & Engineering
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2023
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IF 8.4
Danyang Li,Qiaomei Luo,Hongqiang Xin,Chen Wang,Yiwei Zhao,Huizhong Bai,Fei Ma
Controllable fabrication of high-performance and inexpensive heterogeneous catalysts is crucial for the electrochemical hydrogen evolution reaction (HER) and renewable energy. Wood-derived electrodes provide new opportunities. Herein, N-doped carbon nanotubes (CNTs) encapsulating metal particles are in situ generated on graphitized wood (GW)-derived porous carbon frameworks and molybdenum disulfide (MoS2) nanoflakes are dispersively anchored on CNTs, resulting in hierarchical structures as a hybrid electrode (M/CNT@MoS2@GW, M = Fe, Co, and Ni). The wood matrix hybrid electrodes with abundant microchannels and hierarchical pores could supply electrolytes for continuous reaction and boost gas diffusion. Consequently, the hybrid electrocatalyst Fe/Fe3C/CNT@MoS2@GW exhibits superior HER activity with an overpotential as low as 66.79 mV at 10 mA cm–2 in an alkaline solution. The activity of the hybrid structure is reduced only by 10.18% at 20 mA cm–2 after 48 h electrolysis, with nearly no decay after 5000 cyclic voltammetry (CV) cycles, suggesting good stability and durability. Density functional theory calculations illustrate that a thermodynamically favorable hydrogen adsorption free energy (ΔGH* ≈ 0.07 eV) promotes the catalytic reactions. The results hold great potential in the exploration of wood-derived catalysts for high-performance HER.
研究领域:
材料科学
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能源化学
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Wenxue Zhao,Aihua Yan,Zigao Su,Fei Huang,Jixu Zhang,Ye Gao,Huaqi Yuan
Enabling highly-efficient multiplex-optimization photocatalysts is critical to overcome the bottlenecks of hydrogen evolution reaction efficiency and photostability. Herein, novel CoS/S v -ZnIn 2 S 4 /MoS 2 composites are successfully synthesized through an in situ technique. Taking advantage of the synergistic effect of sulfur vacancy, Schottky-type MoS 2 /S v -ZnIn 2 S 4 junction and Ohmic-type CoS/S v -ZnIn 2 S 4 junction, the light absorption, electron/hole separation efficiency, charge transfer rate and hydrogen reduction reaction dynamic can be significantly enhanced. As a result, an impressive photocatalytic hydrogen evolution rate of 18.43 mmol g −1 h −1 is achieved under the visible-light irradiation. Furthermore, apparent quantum efficiencies of 72.14 % and 9.91 % are also achieved under 350 and 420 nm monochromatic light irradiation. This work presents an in situ perspective to design multiplex-optimization photocatalytic system for highly-efficient hydrogen production.
研究领域:
材料科学
·
光化学
·
能源材料
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高影响因子
MATERIALS RESEARCH BULLETIN
·
2019
·
IF 3.355
Lixin Song,Tianwei Wang,Wanru Jing,Xueyao Xie,Pingfan Du,Jie Xiong
Power source is a core component of wearable electronic device. To obtain a suitable power source, the highly flexible MoS 2 /TiC/C nanofibrous (NFs) film was prepared and employed as the Pt-free and transparent conductive oxide (TCO)-free counter electrode (CE) of flexible dye-sensitized solar cell (FDSSC). Then the FDSSC was combined with a fabric to form a photovoltaic textile. Notably, there was no substrate of CE in the device due to the desired mechanical property of the MoS 2 /TiC/C NFs film. The obtained FDSSC based photovoltaic textile possessed power conversion efficiency of 5.08%, which was larger than that of Pt based device. The main reasons may be the large BET surface area and promising electrocatalytic activity of the MoS 2 /TiC/C CE. Besides, the combination of FDSSC with fabric was extremely easy and simple. Hence, the photovoltaic textile exhibited huge potential applications in smart textile for wearable electronic devices.
研究领域:
材料科学
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纳米能源
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柔性电子学
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光电转换
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智能纺织品
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电化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Bang Li,Xiaohai Zheng,Ganchang Lei,Shiping Wang,Yingying Zhan,Lijuan Shen,Lilong Jiang
The reduction of nitrobenzene (Ph-NO 2 ) to aniline (Ph-NH 2 ) utilizes H 2 S as a hydrogen donor. This approach alleviates environmental pollution while enabling resource utilization. However, it remains a challenge to develop sulfur-resistant catalysts. Herein, we fabricated a series of MoS 2 /ZrO 2 catalysts via crystalline phase modulation engineering for the reduction of Ph-NO 2 by H 2 S to Ph-NH 2 . Systematic experiments demonstrate that amorphous ZrO 2 has the highest concentration of oxygen vacancies (O v ), which exhibits the highest activity and stability. As a result, the MoS 2 /a-ZrO 2 achieves a Ph-NO 2 conversion of 92 % and a Ph-NH 2 selectivity of 85.7 % at 1.5 MPa and 90 °C, which is superior to MoS 2 /m-ZrO 2 , MoS 2 /t-ZrO 2 , MoS 2 and ZrO 2 . In situ FT-IR measurements combined with full two-dimensional time of flight chromatography suggest a double H-induced dissociation pathway for the reduction of Ph-NO 2 to Ph-NH 2 by H 2 S. This study offers a viable strategy for the valorization of H 2 S into valuable resources.
研究领域:
催化化学
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环境化学
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材料科学
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化学反应工程
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光谱学
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WATER AIR AND SOIL POLLUTION
·
2026
·Vol. 237
·期 12
·696
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IF 3.5
Li Lanlan,Wang Zili,Wang Guanghui,Zhang Xuewen,Deng Nansheng
Widespread contamination by Pb(II) and Cd(II) poses persistent environmental and public health risks, while achieving selective removal with a clear mechanistic understanding in multicomponent systems remains challenging. Herein, a MgFe-MoS₄-LDH/BC hybrid composite was synthesized via co-precipitation followed by MoS₄ 2 ⁻ intercalation to regulate interlayer chemistry and introduce sulfur-based active sites. Adsorption kinetics followed a pseudo-second-order model, and equilibrium data were well described by the Langmuir model, indicating dominant chemisorption. Under optimized conditions (C₀- Pb = 100 mg/L, C₀- Cd = 20 mg/L, pH = 6.0, dosage = 0.2 g/L), the composite achieved removal efficiencies of 99.53% for Pb(II) and 85.71% for Cd(II). In binary systems, Pb(II) showed stronger competitive behavior, exhibiting only a 4.7% capacity reduction compared to 9.4% for Cd(II). Thermodynamic analysis confirmed that adsorption was spontaneous and endothermic. Combined XRD, FTIR, XPS, and density functional theory (DFT) analyses revealed that metal immobilization was governed by complexation with oxygen- and sulfur-containing groups, surface precipitation (Pb₂(SO₄)O and Cd(OH)₂), and electrostatic attraction. DFT calculations further demonstrated stronger Pb–S interactions, explaining preferential Pb(II) adsorption. The composite maintained high stability after five regeneration cycles, and key scientific challenges and future innovation pathways are summarized to guide practical application. This work provides a rational strategy for designing selective LDH-based composites for heavy-metal remediation.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2025
·
IF 6.2
Yuejie Qiu,Longbin Li,Leping Zhang,Jianxin Jiang,Liwei Zhu
This study develops a catalytic system using pyruvic acid (PYA) and Fe2+ to efficiently coproduce xylo-oligosaccharides (XOS) and (manno-oligosaccharides) MOS from food material (Gleditsia sinensis Lam. fruit.) and its waste peel, respectively. The system achieved maximum yields of 67.12% XOS and 57.32% MOS without toxic byproducts such as furfural and 5-hydroxymethylfurfural (5-HMF) below 130 °C. The process employs a two-stage mechanism, where PYA cleaves galactose side chains and xylan backbones, while Fe2+ stabilizes β-1,4-glycosidic bonds, resulting in polymerization degree ratios of X2–3/X4–5 at 0.975 and M2–3/M4–5 at 0.96. The composite oligosaccharides, PFMX, showed significant prebiotic effects, enhancing Bifidobacterium adolescentis growth to 3.4 × 108 CFU/mL─144% higher than commercial fructooligosaccharides (FOS). The concentration of short-chain fatty acids (SCFAs) was 15.09 g/L, with specific products propionic acid (1.44 g/L) and butyric acid (0.15 g/L). PFMX effectively regulates substrate utilization and SCFA metabolism, offering a promising strategy for developing functional foods that target gut inflammation.
研究领域:
催化化学
·
碳水化合物化学
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食品科学与技术
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益生元与肠道微生物
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绿色化学
·
生物炼制
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PubMed
高影响因子
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