APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Ming Ya,Teng Guo,Chenxi Xiong,Jie Zhu,Zhenyu Zhang,Huiping Ji,Jianghao Wang,Bolong Li,Jie Fu
Boron doping activates MoS 2 basal planes and constructs B-Mo dual Lewis acid sites for NRR. • B-MoS 2 -5 delivers superior NRR performance of NH 3 yield of 22.1 μg mg -1 cat. h −1 , and a FE of 27.1%. • In-situ ATR-FTIR confirms B-Mo sites enhance N 2 activation and suppress HER. Ambient electrochemical nitrogen reduction reaction (NRR) powered by renewable electricity offers a sustainable alternative to the energy-intensive Haber-Bosch process. However, achieving efficient N≡N bond activation while suppressing the competing hydrogen evolution reaction (HER) in aqueous electrolytes remains a major challenge. Herein, we fabricated Boron-doped MoS 2 (B-MoS 2 ) nanoflowers with abundant asymmetric B-Mo Lewis acid sites as electrocatalysts for NRR. In 0.1 M Na 2 SO 4 , the optimized B-MoS 2 achieves an ammonia yield rate of 22.1 μg mg -1 cat. h −1 at −0.35 V vs. reversible hydrogen electrode (RHE) and faradaic efficiency (FE) of 27.1% at −0.3 V vs. RHE, outperforming most previous reports. The superior performance is attributed to the synergistic effect of the B-Mo dual Lewis acid sites: the electron-deficient B site enhances N 2 adsorption by capturing its lone-pair electrons, while Mo promotes π-backdonation to polarize and activate the N≡N bond. Simultaneously, the strong Lewis acidity of B suppresses H⁺ adsorption, inhibiting HER. In-situ electrochemical attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy further confirms B-Mo sites boost N 2 adsorption and activation, favoring NRR over HER. This work provides insights for the rational design of sustainable electrocatalysts for ambient nitrogen fixation. A phase-engineered boron-doped MoS 2 nanoflowers were synthesized for enhancing B-Mo dual-site accessibility and efficient electrochemical nitrogen fixation. Download: Download high-res image (144KB) Download: Download full-size image
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高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2026
·
IF 6.6
Tao Zhou,Xianghua Zhao,Jiangfan Liao,Qingrun Xie,Mingli Xu,Tai Li,Guoqiang Lv,Xiufeng Li,Wenhui Ma
The rapid growth of the photovoltaic (PV) industry has resulted in massive generation of silicon wafer debris, posing both environmental and resource-utilization challenges. Achieving sustainable and high-value use of this silicon waste for photoelectrochemical hydrogen evolution reaction (PEC-HER) remains highly desirable yet technically challenging. Silicon wafer debris was etched via a metal-assisted chemical etching (MACE) process to obtain silicon nanowires (Si NWs). The morphology of MoS 2 was further tailored through a polyvinylpyrrolidone (PVP)-assisted hydrothermal method, followed by the formation of MoS 2 /Si NWs heterostructures. This sustainable strategy integrates resource recycling with morphology control and heterostructure engineering, enabling uniform MoS 2 coverage, optimized interfacial coupling, and accelerated charge transfer, thereby enhancing the PEC-HER efficiency. The Nano-MoS 2 /Si NWs exhibited a Tafel slope of 167 mV⋅dec −1 , significantly lower than that of pristine Si NWs (524 mV⋅dec −1 ), indicating accelerated hydrogen evolution kinetics. The hydrogen production rate reached 404.77 μmol cm −2 , corresponding to a 196.3% enhancement compared with Si NWs (136.62 μmol cm −2 ). Finite element analysis further revealed markedly enhanced and uniformly distributed current density and surface H + concentration for MoS 2 /Si NWs, attributed to their abundant exposed active edge sites and improved interfacial charge transfer, which collectively contribute to the enhanced PEC-HER performance. This work advances a sustainable upcycling route that converts PV silicon wafer debris into functional photocathodes and offers a general approach to morphology control and heterostructure engineering for efficient, eco-friendly solar-to-hydrogen conversion.
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高影响因子
Journal of Water Process Engineering
·
2026
·
IF 6.6
Chuantao Wang,Wenhui Shi,Wangchuan Zhu,Shiwang Wang,Xiuyao Chang,Qi Wang,Wenlin Zhang,Wenjing Wang,Mimi Liu,Chunming Yang
Ag doping improves piezoelectric field and PMS/O 2 adsorption and activation. • The faster charge transfer of 2-Ag/MoS 2 boosts pollutant degradation activity. • PVDF membranes solve the recovery and reusability issues of powder catalysts. The integration of piezocatalysis with persulfate-based advanced oxidation processes holds substantial potential for pollutant remediation, yet its practical efficacy is often plagued by the limited piezoelectric field strength and low affinity of peroxymonosulfate (PMS). Herein, silver-doped layered molybdenum disulfide (Ag/MoS 2 ) was used to degrade pollutants by piezo-promoted PMS activation. The experimental results and theoretical calculations of adsorption energy, density of states (DOS) and electron localization function (ELF), clarified that Ag doping in MoS 2 plays a triple role in promoting the activation of piezoelectric driven PMS: Firstly, Ag doping can effectively improve the piezoelectric polarization field of the material. Secondly, it facilitates the adsorption and activation of oxygen-containing species such as PMS and O 2 by the catalyst. Thirdly, Ag acts as active sites and participates in the generation of reactive oxygen species (ROS). The synergistic effect promoted charge separation and reaction kinetics, significantly accelerating the activation of PMS and improving the degradation efficiency of ORZ. Furthermore, combined with the Fukui function calculations and liquid chromatography-mass spectrometry (LC-MS) measurements, the potential degradation pathways of ORZ during the reaction process were systematically revealed. Under ultrasonic (US) conditions, the piezoelectric catalytic degradation rate of ORZ (0.066 min −1 ) on the optimally Ag-doped MoS 2 was about 41 times higher than that of the sole PMS system and 5.5 times higher than that of bare MoS 2 . Furthermore, this catalyst enabled the efficient removal of various dye and antibiotic contaminants, including carbamazepine (CBZ), methylene blue (MB), and tetracycline (TC). Meanwhile, PVDF composite catalytic membranes were successfully fabricated in this study, which solved the critical problem of difficult recovery and reusability of powder catalysts. This new strategy can significantly enhance piezo-promoted PMS activation, providing important insights for the removal of pollutants.
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ACS Applied Energy Materials
·
2026
·Vol. 9
·期 14
·9390-9399
·
IF 5.5
Zhan Wenqi,Zhai Xingwu,Hu Jiaping,Xu Han-Shu,Tang Kaibin
Lithium−carbon dioxide (Li−CO 2 ) batteries are promising energy storage systems due to their high theoretical energy density and capability for CO 2 utilization, yet their practical performance is limited by sluggish reaction kinetics. Here, we report an effective edge-site engineering strategy to enhance the catalytic activity of MoS 2 nanosheets via controlled H 2 O 2 etching. Density functional theory (DFT) calculations reveal that edge sites exhibit significantly stronger adsorption toward key intermediates (Li, CO 2 , and Li 2 CO 3 ) than the basal plane, identifying them as dominant active centers. Guided by this insight, a series of MoS 2 nanosheets with tunable edge-site densities were synthesized on carbon paper. Structural characterizations confirm that moderate etching effectively increases edge-site exposure while preserving structural integrity. Electrochemical measurements demonstrate that the optimized MoS 2 -45 s electrode delivers a low overpotential of 0.77 V, excellent rate capability, and stable cycling over 700 h with an energy efficiency exceeding 75%. In short, our work highlights the critical role of edge-site regulation in improving catalytic performance and provides a rational strategy for designing advanced cathode materials for Li−CO 2 batteries.
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高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 7
·1-15
·
IF 5.3
Tan Chong,Liu Xueyan,Yang Kaijie,Li Junsheng,Yin Yuhong,Zuo Jinlong
A novel electrochemical sensor (NiO/MoS₂/rGO/GCE) designed for the sensitive detection of methyl parathion (MP) pesticide residues has been developed. The NiO/MoS₂/rGO composite was synthesized via hydrothermal and solvothermal methods, with successful formation and optimized microstructural characteristics validated through scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Empirical results demonstrated that the incorporation of NiO markedly augmented both the electrochemically active sites and electron-transfer efficiency, thereby enabling the sensor to achieve an excellent linear detection range of 0.01–10 μg/mL for MP, accompanied by a notably low detection limit of 1.1 ng/mL (S/N = 3). Furthermore, the sensor exhibited superior anti-interference performance, achieving recovery percentages ranging from 97.7 to 108.8% in practical sample analyses (apple juice), with relative standard deviations (RSD) between 2.7 and 5.2%. Overall, this research offers a promising and cost-effective approach for highly sensitive pesticide residue detection, underscoring its substantial potential for broad practical applications. Graphical
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PubMed
高影响因子
WEAR
·
2025
·
IF 6.1
Changhao Zuo,Lei Xu,Zhimeng Tang,Yongfen Sun,Guo Zheng,Yishu Zhao,Bin Hu,Rui Zhou
In the present work, W, Mo, and MoS 2 reinforced graphite/copper composites were prepared using microwave sintering. By focusing on the copper matrix and graphite reinforcement, W and Mo elements were introduced into the copper matrix, while MoS 2 was doped into the graphite. During sintering, carbide pinning phases and Cu-Mo-S transition layers were formed at the graphite/copper interface, enhancing the interfacial bonding between graphite and copper. The effects of sintering time on the microstructure and properties of the composites were investigated, including their tribological performance under varying friction loads and linear speeds. A sintering time of 60 min was observed to lead to composite materials with improved microstructural properties, specifically a higher density of pinning phases and Cu-Mo-S transition layers, as well as a uniform microstructure. Significant improvements were observed in density, hardness, electrical, and thermal conductivity. Under a friction load of 4 N and a sliding speed of 1.7 m/s, the wear rate of the composites was only 4.52 × 10 −8 cm 3 N −1 m −1 . These findings provide a reference for improving the interface of graphite/copper composites and their application in the field of friction and wear.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zejun Cao,Ruixi Xiao,Yuxia Chen,Jiangtao Dong,Xuezhong Du
The widespread global use of paraquat (PQ) is attributed to its high herbicidal efficacy and low cost, however, the unresolved issue of its fatal toxicity to humans after ingestion remains a major challenge. The nanocarriers MIL-101(Cr)@MoS 2 @Fe 3 O 4 (MMF) are synthesized to load PQ through the strong π–p electron coupling between the delocalized π electrons of PQ and the localized p electrons of S atoms of MoS 2 at the interface, and then encapsulated with chitosan to construct magnetically recyclable PQ nanoherbicides with excellent stability and biosafety. The release of PQ from the nanoherbicides in simulated human gastrointestinal environments is inhibited (“PASS0” logic gate) from the source, thereby enhancing user safety. Under natural sunlight conditions, the near-infrared photothermal effect of MMF weakens the strong interfacial π–p electron coupling between PQ and MMF, resulting in the release of PQ (“YES” logic gate). The PQ nanoherbicides maintain the herbicidal efficacy of bare PQ in practical applications. The residual nanoherbicides can be easily recovered using magnets, with the collection ratios of 97.8 % and 91.1 % in water and soil, respectively, at a magnetic field strength of 0.5 T. Seed dressing, cytotoxicity, and mouse models demonstrate that the nanoherbicides have excellent biosafety for both plant growth and PQ-ingesting users. The creative PQ nanoherbicides simultaneously address the challenging issues of user safety, herbicidal efficacy, and environmental friendliness from the source.
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高影响因子
Energy Sources Part A-Recovery Utilization and Environmental Effects
·
2020
·
IF 1.184
Huaping Xiao,Huiyu Zou,Shuhai Liu
Graphene and molybdenum disulfide (MoS2) have been widely used as lubricating agents to reduce friction and wear in sliding contacts, however, their effects on the tribological properties of steel-steel contact under biodiesel lubrication have been rarely reported. In this study, we prepared steel surfaces with three types of physical coating, namely graphene, MoS2 and a blend of graphene and MoS2, and investigated the tribological properties of these coatings under biodiesel lubrication conditions. Under lubrication of 20 vol% biodiesel, the wear track depth on the disk decreased by 10.3% and 20.5%, while the wear track width on the disk was reduced by 3.4% and 1.7%, respectively, with the graphene and MoS2 absorption layers prepared on the steel disk surfaces. In terms of friction reduction behavior, the MoS2 layer was found to reduce the coefficient of friction (COF) by 2.4%, whereas there was a 2.4% increase in the COF with the graphene layer. Nonetheless, neither the graphene coating nor the MoS2 coating was found to be suitable for the condition of pure biodiesel lubrication, since a significant increase was observed in the wear on both the steel balls and the steel disks with the application of these absorption layers.
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高影响因子
CERAMICS INTERNATIONAL
·
2018
·Vol. 44
·期 7
·8550-8555
·
IF 3.057
Jing Zhang,Yanjing Li,Tingting Gao,Xuefeng Sun,Pei Cao,Guowei Zhou
In this study, flower-shaped TiO 2 /C embedded with fish-scale-like MoS 2 (TiO 2 /C/MoS 2 ) microspheres were synthesized by impregnating MoS 2 into the interspace of TiO 2 /C. The TiO 2 /C/MoS 2 microspheres (diameter of 2–3 µm), which are composed of several homogeneous flake-shaped petals, were then applied as anode in lithium-ion batteries. MoS 2 has a fish-scale shape with size of approximately 10 nm. In addition, MoS 2 is connected to the TiO 2 petal surface. In the flower-shaped TiO 2 /C/MoS 2 microspheres, TiO 2 acts as backbone for MoS 2 that can effectively minimize the strain of volume changes. The fish-scale-like MoS 2 can provide more active sites for reactions. The flower-shaped TiO 2 /C/MoS 2 electrode exhibits a discharge capacity of 621 mA h g −1 at 100 mA g −1 after 100 cycles, which is much higher than that of TiO 2 /C electrode (291 mA h g −1 ) and pure MoS 2 electrode (160 mA h g −1 ). Compared with TiO 2 /C and pure MoS 2 , the structural and compositional features of the TiO 2 /C/MoS 2 microspheres enhance the specific capacity and cycling stability.
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高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Shaoqiang Su,Qingwei Zhou,Zhiqiang Zeng,Die Hu,Xin Wang,Mingliang Jin,Xingsen Gao,Richard Nötzel,Guofu Zhou,Zhang Zhang,Junming Liu
Nanostructured molybdenum disulfide (MoS2) has been considered as one of the most promising catalysts in the hydrogen evolution reaction (HER), for its approximately intermediate hydrogen binding free energy to noble metals and much lower cost. The catalytically active sites of MoS2 are along the edges, whereas thermodynamically MoS2 favors the presence of a two-dimensional (2-D) basal plane and the catalytically active atoms only constitute a small portion of the material. The lack of catalytically active sites and low catalytic efficiency impede its massive application. To address the issue, we have activated the basal plane of monolayer 2H MoS2 through an ultrathin alumina mask (UTAM)-assisted nanopore arrays patterning, creating a high edge density. The introduced catalytically active sites are identified by Cu electrochemical deposition, and the hydrogen generation properties are assessed in detail. We demonstrate a remarkably improved HER performance as well as the identical catalysis of the artificial edges and the pristine metallic edges of monolayer MoS2. Such a porous monolayer nanostructure can achieve a much higher edge atom ratio than the pristine monolayer MoS2 flakes, which can lead to a much improved catalytic efficiency. This controllable edge engineering can also be extended to the basal plane modifications of other 2-D materials, for improving their edge-related properties.
研究领域:
材料科学
·
纳米技术
·
催化
·
能量转换
·
二维材料
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高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yunxia Hu,Hongying Yang,Jingtao Huang,Xin Zhang,Biying Tan,Huiming Shang,Shichao Zhang,Wei Feng,Jingchuan Zhu,Jia Zhang,Yong Shuai,Dechang Jia,Yu Zhou,PingAn Hu
Near-infrared (NIR) synaptic devices integrate NIR optical sensitivity and synaptic plasticity, emulating the basic biomimetic function of the human visual system and showing great potential in NIR artificial vision systems. However, the lack of semiconductor materials with appropriate band gaps for NIR photodetection and effective strategies for fabricating devices with synaptic behaviors limit the further development of NIR synaptic devices. Here, a two-terminal NIR synaptic device consisting of the In2Se3/MoS2 heterojunction has been constructed, and it exhibits fundamental synaptic functions. The reduced band gap and potential barrier of In2Se3/MoS2 heterojunctions are essential for NIR synaptic plasticity. In addition, the NIR synaptic properties of In2Se3/MoS2 heterojunctions under strain have been studied systematically. The ΔEPSC of the In2Se3/MoS2 synaptic device can be improved from 38.4% under no strain to 49.0% under a 0.54% strain with a 1060 nm illumination for 1 s at 100 mV. Furthermore, the artificial NIR vision system consisting of a 10 × 10 In2Se3/MoS2 device array has been fabricated, exhibiting image sensing, learning, and storage functions under NIR illumination. This research provides new ideas for the design of flexible NIR synaptic devices based on 2D materials and presents many opportunities in artificial intelligence and NIR vision systems.
研究领域:
光电子学
·
神经形态工程
·
人工智能
·
材料科学
·
纳米技术
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高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Weidong Cai,Zhixing Gan,Feng Nan,Shun Wang,Fuxiang Ji,Yiqiang Zhan
We present a novel and stable laminated structure to enhance the performance and stability of silicon (Si) photocathode devices for photoelectrochemical (PEC) water splitting. First, by utilizing Cu nanoparticle catalysts to work on a n+p-black Si substrate via the metal-assisted chemical etching, we can achieve the black silicon with a porous pyramid structure. The low depth holes on the surface of the pyramid caused by Cu etching not only help enhance the light capture capability with quite low surface reflectivity (<5%) but also efficiently protect the p–n junction from damage. To improve the charge migration efficiency and mitigate parasitic light absorption from cocatalysts at the same time, we drop casted quantum dots (QDs) MoS2 with the size of nanometer scale as the first layer of catalyst. Hence, we then can safely electrodeposit cocatalyst Co nanoparticles to further enhance interface transfer efficiency. The synergistic effects of cocatalysts and optimized light absorption from the morphology and QDs contributed to the overall enhancement of PEC performance, offering a promising pathway for an efficient, low cost, and stable (over 100 h) hydrogen production photocathode.
研究领域:
材料科学
·
可再生能源
·
光催化
·
纳米技术
·
半导体器件
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高影响因子
危险品化学品经营许可证（带存储）