ACS Applied Nano Materials
·
2025
·
IF 5.5
Xu Zhang,Baochang Gao,Yuan Tian,Yu Shi,Guowei Li,Zhiguo Zhang,Chengwei Han,Li Sun,Jingru Zhang,Bo Liu,Hongwei Zhang,Guangyu Bai
Direct electrolysis of seawater offers a promising pathway for sustainable hydrogen production while avoiding the issues caused by freshwater shortages. However, the sluggish four-electron transfer kinetics and the competitive adsorption of Cl– ions of the oxygen evolution reaction (OER) during seawater electrolysis remain as key challenges in designing effective catalysts. Herein, leveraging the electron-absorbing properties of molybdenum cobalt nitride (CoN/Mo2N) to modulate the electronic structure of nickel–iron layered double hydroxide (NiFe-LDH), a nanoscale hierarchical heterostructure of NiFe-LDH coated on CoN/Mo2N (CoN/Mo2N/LDH) was engineered to achieve highly efficient OER. Operando electrochemical impedance spectroscopy reveals that the heterointerface facilitates charge transport kinetics. Additionally, charge density analysis and adsorption energy calculations confirm that the NiFe-LDH preferentially adsorbs OH– over Cl– in alkaline seawater. The CoN/Mo2N/LDH nanostructure requires only 249 mV overpotential to achieve 500 mA·cm–2 in 6 M KOH + seawater, maintaining 94.8% of its initial activity over 10 days of continuous operation. This work elucidates the electron-absorption-driven modulation of electronic structures in nitride-regulated LDH nanomaterials, enabling their application in industrial-scale seawater electrolysis. The tailored nanoscale design achieves simultaneous high-efficiency oxygen evolution and exceptional stability, advancing scalable green hydrogen production from seawater.
研究领域:
材料科学
·
电化学
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2025
·
IF 5.2
Wanting Yang,Zhuoyue Lan,Xiong Li,Yunchuan Li,Hang Li,Yunxiang Du
To efficiently enrich fine copper-molybdenum ore, a pioneering method was employed by utilizing MCO (trimethyl-pyridin) and kerosene as high-efficiency composite collectors in the flotation process. Micro-flotation and actual ore flotation tests demonstrated that the composite collector manifested superior collection capacity and selectivity compared to using a single collector. Furthermore, the inclusion of kerosene reduced collector consumption, thereby lowering overall reagent costs. TOC test results indicated that the composite collector possesses a high adsorption quantity on the mineral surface. Additionally, contact angle measurements demonstrated that the composite collector significantly enhanced the surface hydrophobicity of chalcopyrite and molybdenite. FT-IR, XPS, and ToF-SIMS analyses were conducted to investigate the adsorption mechanism. The results illustrated that MCO adsorbed to mineral surfaces by forming complexes with Cu atoms in chalcopyrite and Mo atoms in molybdenite, respectively. The primary interaction between kerosene and copper-molybdenum ore involved hydrophobic attraction with kerosene physically adhering to the mineral surface to form hydrophobic aggregates. Hence, this study presented an effective procedural approach for the flotation of fine copper-molybdenum ore.
研究领域:
矿物加工工程
·
表面化学
✓ 已验证
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2024
·
IF 6.1
Gongjun Cui,Wenpeng Han,Wuchen Zhang,Junxia Li,Ziming Kou
The aim of this research is to enhance the tribological performance of Stellite 12 coatings at room temperature-1000 °C. To this end, Mo modified Stellite 12 coatings were prepared on the Inconel 718 alloy by laser cladding , and the Mo content was optimized. The effects of Mo on the phases, microstructure and tribological behavior of coatings were investigated. The hardness and tribological performance of coatings were enhanced by adding Mo. There was a threshold content of Mo concerning with tribological performance of Stellite 12 matrix coatings. The 12.0 wt% Mo modified Stellite 12 coating kept more outstanding tribological performance, which was due to the high hardness, in-situ synthesized solid lubricants , friction film and the net structure of complex carbides .
研究领域:
材料科学
·
摩擦学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Rong Li,ZhiHui Hao,Xiangwei Zhao,Huilin Zhou,Zhimin He,Qin Dong,Wei Hong,Xinglong Gou
Metal sulfides, such as SnS2, have been extensively studied as separator modifiers in lithium–sulfur batteries (LSBs) owing to their dual functionality in chemically anchoring lithium polysulfides (LiPSs) and catalytically facilitating redox reactions. Nevertheless, poor electrical conductivity and limited catalytic efficiency restrict their practical implementation for LiPS transformation kinetics. To address these issues, we prepared Mo-doped SnS2 (Mo–SnS2) nanosheets with sulfur vacancies through a rapid one-pot formamide-assisted method. The incorporation of Mo heteroatoms not only improves conductivity but also induces favorable sulfur vacancies, synergistically promoting both adsorption and electrocatalytic conversion of LiPSs. The Li–S cell with a Mo–SnS2 nanosheet-modified separator delivers a remarkable initial capacity of 1007.5 mAh g−1 at 1C, maintains 799.5 mAh g−1 after 600 cycles with a low fading ratio of 0.034% per cycle, and demonstrates a favorable rate performance of 591.9 mAh g−1 at 5C. This defect engineering strategy through heteroatom doping offers a promising approach to concurrently mitigate the polysulfide shuttle effect and enhance the reaction kinetics in sulfur-based energy storage systems.
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Hongjiao Song,Binbin Hu,Yulong Zhou,Ye Wu,Jibao Wu,Hongsong Tian,Qifeng Liang,Yongsheng Tan,Zebo Fang,Lirui Yu,Huili Li,Shunhang Wei
Interface engineering has been proven to be a promising strategy for regulating carrier transport. Herein, an interfacial Mo–O–W bond was constructed between Bi2MoO6 nanospheres and WO3 quantum dots. It served as a fast transfer channel for interfacial photogenerated carriers, resulting in the formation of a direct Z-scheme heterojunction. The Z-scheme heterojunction not only maximized the redox ability but also exhibited enhanced separation and transfer efficiency of photogenerated carriers. Thereby, it exhibited excellent degradation activity and reusability for different simulated pollutants (levofloxacin, rhodamine B, and methylene blue) under LED irradiation, and its photocatalytic rate is approximately doubled. Unexpectedly, a considerable amount of H2O2 was formed via a direct one-step two-electron oxygen reduction reaction process, which played a significant role in the photodegradation process, even surpassing the role of electrons/holes as active species. Furthermore, the photodegradation pathway of levofloxacin by the Z-scheme heterojunction was analyzed. This study could provide insights into establishing an interfacial chemical bond, modulating charge transfer, and the photodegradation mechanism.
研究领域:
材料科学
·
环境化学
·
光催化
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纳米材料
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界面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2025
·
IF 3.3
Juan Lei,Yan Zhang,Yujing Wang,Xiaoli Ren,Lijun Cheng,Qinqin He,Shuang Wang
In this work, high valence Mo was introduced to prepare amorphous MNC-LDH (MoNiCo-LDH) for constructing crystalline NCO/amorphous MNC-LDH (crystalline NiCo2O4/amorphous MoNiCo-LDH) composite. The prepared sample exhibited a three-dimensional pompom-like structure composed of ultrathin nanoflakes and a hybrid interface between crystalline and amorphous phase, which benefited good electrochemical performance. The synthesized material showed a specific capacity of 841 C/g at 1 A/g, while retaining 82.3% of its initial capacity at 20 A/g. The assembled NCO/MNC-LDH//AC HSC device exhibited an energy density of 58 Wh/kg when the power density was 850 W/kg. It is noteworthy that even at a power density of 8500 W/kg, an energy density of 37.1 Wh/kg could be sustained. The NCO/MNC-LDH//AC retained 76.3% of its initial specific capacitance and 100% coulombic efficiency after 20000 consecutive charge and discharge cycles, demonstrating excellent cycling stability. Furthermore, the ability of two HSCs connected in series to operate small fans and light up LED lights in various colors indicated the practical applications potential. Therefore, the synthesized NCO/MNC-LDH in this work is a favorable candidate material for supercapacitors, which has guiding significance for designing crystalline/amorphous composite materials for energy storage applications.
研究领域:
材料科学
·
电化学
·
储能
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemCatChem
·
2025
·
IF 3.9
Qiaofei Zhang,Yuanyuan Hou,Yiming Zhang,Wenlei Xie,Jiangbo Li,Lihong Guo,Hongjuan Bai
Graphical Heterogeneous Mo/ZrP solid acid catalysts with high specific surface area, hierarchically porosity, and strong acidity are developed by intercalating layered ZrP with Mo precursors. Such catalyst exhibits high resistance to water and FFAs, excellent reusability, and good capacity of simultaneous esterification and transesterification. The strong interaction between Mo and ZrP support enhances Mo dispersion and prevents leaching. To develop robust solid acid catalysts for the simultaneous transesterification and esterification of low-value oils into biodiesel, a Mo-modified zirconium phosphate (Mo/ZrP) catalyst was prepared via the intercalation of Mo precursors into layered ZrP using an impregnation method. N 2 adsorption-desorption, NH 3 -TPD, and Py-FTIR analyses indicated that the 40%Mo/ZrP catalyst possesses a high specific surface area, hierarchically porous structures, and strong acidic properties. Such catalyst demonstrates outstanding performance, achieving 97% oil conversion under the optimal reaction conditions. Furthermore, the catalyst shows not only high resistance to free fatty acid (FFA) and water, but good reusability, maintaining oil conversion of >85% after five reuse cycles. This performance meets the requirements for biodiesel production from low-quality oil feedstocks containing moisture and FFA. As evidenced by XRD, UV–vis-DRS, and H 2 -TPR results, the intercalation of Mo species can induce strong interactions between the layered ZrP and Mo, enhancing catalytic stability by preventing the leaching of acidic Mo species. Additionally, the synergistic effect between Brønsted and Lewis acid sites contributes to excellent co-catalysis ability for simultaneous transesterification and esterification in acidic oil conversion.
研究领域:
催化
·
可再生能源
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化学工程
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材料科学
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环境科学
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Min Wang,Kaisheng Chen,Guanjun Sun,Zihao Yan,Yongjun Chen,Hongtao Liu,Erling Zhao,Jianbao Li,Xiwen Du
The development of efficient electrocatalysts for hydrogen evolution reaction (HER) in neutral media remains a challenge due to their slow kinetics and low conductivity. Metal selenides are widely used as HER catalysts, but their structural stabilities are not good and the HER performances in neutral media need to be improved. Herein, we report the direct growth of Mo-doped CuSe (Mo 0.33 Cu 0.67 Se) nanosheets with edge-amorphization on Ni foam (NF) through a facile one-pot solvothermal method for the first time, which are inexpensive and possess high-HER performances in neutral media. It was found that Mo 0.33 Cu 0.67 Se only requires an overvoltage of 55 mV to reach a current density of 10 mA cm −2 (with a Tafel slope of 75 mV dec -1 ), which is superior to commercial 20 % Pt/C (73 mV). Doping CuSe with Mo could lead to amorphization of the edges of nanosheets, and both experimental and theoretical results verify that this structure is beneficial for reducing the oxidative dissolution of Se ion and improving stability. Meanwhile, it also optimizes the free energy of H 2 O dissociation, hydrogen adsorption and desorption, thereby effectively enhancing the performance of electrocatalytic hydrogen evolution in neutral media.
研究领域:
材料科学
·
电催化
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Yanxia Wu,Hanbin Jin,Xiaoling Zhou,Lulu Guo,Qingtao Wang
Oxidizing glycerol to produce formate as a substitute for the traditional slow anodic oxygen evolution reaction is an effective strategy to enhance hydrogen production efficiency and reduce associated costs. However, the development of efficient and stable catalysts remains a significant challenge for the glycerol oxidation reaction coupled with water electrolysis. In this study, we synthesized molybdenum-doped Ni 3 Se 2 /NiSe nanomaterials supported on nickel foam using a straightforward one-step hydrothermal method. In a 1 M KOH solution, the Mo 0.2 catalyst exhibited exceptional electrocatalytic oxidation performance. Specifically, during the glycerol oxidation process, it achieved a current density of 10 mA cm −2 at a remarkably low potential of 1.20 V (vs. RHE) and demonstrated good electrochemical stability at a current density of 50 mA cm −2 . Studies indicate that the incorporation of molybdenum atoms modifies the chemical environment of nickel and selenium atoms, which not only enhances the electrocatalytic activity of the catalyst but also improves the stability of the material itself. Additionally, it facilitates the catalytic oxidation of glycerol at the anode while concurrently promoting hydrogen evolution at the cathode, resulting in the efficient simultaneous production of hydrogen and formate.
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2020
·Vol. 11
·期 1
·10
·
IF 3.52
Yang Dang,Yu Cheng,Yukun Zhou,Yifei Huang,Kaige Wang
The treatment of organic dye contaminants in wastewaters has now becoming more imperative. Fenton-like degradation of methylene blue (MB) and methyl orange (MO) in aqueous solution was investigated by using a nanostructure that a layer of CuCl2nanoflake film grown on the top surface of nanoporus anodic alumina substrate (nano-PAA-CuCl2) as catalyst. The new nano-PAA-CuCl2composite was fabricated with self-assembly approach, that is, a network porous structure film composed of CuCl2nanoflake grown on the upper surface of nanoporous anodic alumina substrate, and the physical and chemical properties are characterized systematically with the X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), and high-resolution transmission electron microscopy (HRTEM), Energy Dispersive Spectrometer (EDS), X-ray photoelectron spectroscopy (XPS). The experimental results showed that the nano-PAA-CuCl2catalyst presented excellent properties for the degradation of two typical organic pollutants such as MB and MO, which were almost completely degraded with 8 × 10−4mol/L nano-PAA-CuCl2catalyst after 46 min and 60 min at reaction conditions of H2O218 mM and 23 mM, respectively. The effects of different reaction parameters such as initial pH, H2O2concentration, catalyst morphology and temperature were attentively studied. And more, the stability and reusability of nano-PAA-CuCl2were examined. Finally, the mechanism of MB and MO degradation by the nano-PAA-CuCl2/H2O2system was proposed, based on the experimental data of the BCA and the temperature-programmed reduction (H2-TPR) and theoretical analysis, the reaction kinetics belonged to the pseudo-first-order equation. This new nanoporous composite material and preparation technology, as well as its application in Fenton-like reaction, provide an effective alternative method with practical application significance for wastewater treatment.Keywords:composite of nanoporous anodic alumina-CuCl2catalyst;Fenton-like reaction;advanced oxidation processes;organic pollutant;degradation mechanism
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Jiameng Sun,Bin Yu,Fuquan Tan,Wanfeng Yang,Guanhua Cheng,Zhonghua Zhang
The synthesis of cost-effective and high-performance electrocatalysts for water splitting is the main challenge in electrochemical hydrogen production . In this study, we adopted a high throughput method to prepare bi-metallic catalysts for oxygen/hydrogen evolution reactions (OER/HER). A series of Ni–Mo alloy electrocatalysts with tunable compositions were prepared by a simple co-sputtering method. Due to the synergistic effect between Ni and Mo, the intrinsic electrocatalytic activity of the Ni–Mo alloy electrocatalysts is improved, resulting in excellent HER and OER performances. The Ni 90 Mo 10 electrocatalyst shows the best HER performance, with an extremely low overpotential of 58 mV at 10 mA cm −2 , while the Ni 40 Mo 60 electrocatalyst shows an overpotential of 258 mV at 10 mA cm −2 in OER. More significantly, the assembled Ni 40 Mo 60 //Ni 90 Mo 10 electrolyzer only needs a cell voltage of 1.57 V to reach 10 mA cm −2 for overall water splitting .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2021
·
IF 5.234
Yongxia Li,Hui Qi,Jia Yu,Wenbo Han
Silicon nitride ceramic composites were densified by spark plasma sintering with different-sized Mo particles. In-situ synthesis of Mo-Si compound can accelerate the nucleation of β-Si 3 N 4 grain, and the number of β-Si 3 N 4 grain nucleation increases with decrease of Mo particle size during spark plasma sintering . The effect of Mo particle size on the grain growth of β-Si 3 N 4 is significant, while that for the phase composition of Si 3 N 4 samples is negligible. Si 3 N 4 ceramic composites with 6 wt% nano-sized Mo addition are shown to have the highest bending strength (922.56 MPa) and fracture toughness (8.94 MPa m 0.5 ), which is attributed primarily to more elongated β-Si 3 N 4 grains obtained by more β-Si 3 N 4 grain nucleation.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）