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学者姓名：李洪义
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摘要 ：
Highly active, stable, economic friendly electrocatalysts play a crucial role for the commercialization of direct methanol fuel cells (DMFCs). One kind of flower-like PtNi bimetallic particle anchored on TiO2 na-notube arrays (PtNi/TNTs/Ti) had been synthesized by one-step electrochemical synthesis as anode catalysts for methanol oxidation reaction (MOR) in this study. The PtNi/TNTs/Ti electrode demonstrated high elec-trocatalytic activity and durability significantly for MOR. In addition, PtNi100/TNTs/Ti possessed a mass activity of 409.8 mA/mgpt, which was four times greater than that of Pt100/TNTs/Ti electrodes. According to further structure analysis, the improvement in catalytic activity was attributed to lattice compression when Ni atoms entered the Pt lattice accompanied by a 1.02 eV positive shift in Pt 4 f7/2 binding energy, and density functional theory (DFT) calculations indicated that the remarkably enhanced catalytic performance on PtNi through lattice compression arising from the enhanced OH adsorption. It appears promising that this simple method could be adopted to prepare an integrated electrode used as energy and environmental applications. (c) 2023 Published by Elsevier B.V.
关键词 ：
TiO2 nanotubes TiO2 nanotubes PtNi bimetallic catalyst PtNi bimetallic catalyst Methanol oxidation reaction Methanol oxidation reaction Lattice compression Lattice compression
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| GB/T 7714 | Chang, Yukun , Chen, Yanhui , Wu, Yahang et al. One-step synthesis of PtNi anchored on TiO2 nanotube arrays for methanol oxidation [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 943 . |
| MLA | Chang, Yukun et al. "One-step synthesis of PtNi anchored on TiO2 nanotube arrays for methanol oxidation" . | JOURNAL OF ALLOYS AND COMPOUNDS 943 (2023) . |
| APA | Chang, Yukun , Chen, Yanhui , Wu, Yahang , Yang, Zicong , Wang, Jinshu , Wang, Xinxin et al. One-step synthesis of PtNi anchored on TiO2 nanotube arrays for methanol oxidation . | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 943 . |
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摘要 ：
An innovative method is created for transforming iron-rich RO phase (MgO0.239FeO0.761) on steel slag surface into nanostructured Mg0.04Fe2.96O4 layer. The phase change process is investigated, and it is found that salicylic acid modification and alkaline roasting procedures remarkably increase the specific surface area from 0.46 m2/g (raw steel slag) to 69.5 m2/g (Mg0.04Fe2.96O4), and the generation of Mg0.04Fe2.96O4 enhances the absorption of visible light and Cr(VI) conversion with 2-times increasement than raw steel slag. Surface complexation between H2C2O4 ligands and Fe metal moiety on Mg0.04Fe2.96O4 induces the intramolecular electron transfer under visible light irradiation based on a ligand-to-metal charge transfer mechanism, thus resulting in Cr(VI) photoreduction, and the catalytic efficiency is above 90% for Cr(VI) (40 mg/L) under inherent pH= 5.5 conditions. Moreover, recyclability tests based on magnetic separation show that the photoreactivity is closely related to Mg content of Mg0.04Fe2.96O4 layer where Mg leaching occurs and finally generates cubic spinel configuration Fe3O4. This work highlights the importance of surface functionalization in post-use phases of steel slag in which surface reactivity and application potential can be greatly altered by chemical exposure history and surface transformations. It also provides valuable references for studying the metastable state mechanism of magnesium ferrite photocatalysts.
关键词 ：
Cr(VI) reduction Cr(VI) reduction Steel Slag Steel Slag Magnesium ferrite Magnesium ferrite
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| GB/T 7714 | Sun, Lingmin , Wu, Junshu , Wang, Jinshu et al. In-situ constructing nanostructured magnesium ferrite on steel slag for Cr (VI) photoreduction [J]. | JOURNAL OF HAZARDOUS MATERIALS , 2022 , 422 . |
| MLA | Sun, Lingmin et al. "In-situ constructing nanostructured magnesium ferrite on steel slag for Cr (VI) photoreduction" . | JOURNAL OF HAZARDOUS MATERIALS 422 (2022) . |
| APA | Sun, Lingmin , Wu, Junshu , Wang, Jinshu , Yang, Yilong , Xu, Meng , Liu, Jingchao et al. In-situ constructing nanostructured magnesium ferrite on steel slag for Cr (VI) photoreduction . | JOURNAL OF HAZARDOUS MATERIALS , 2022 , 422 . |
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摘要 ：
Here, Pt modified anatase-type titanium dioxide (TiO2) nanotube arrays were prepared by electroplating method for a low-platinum Pt/TiO2 nanotubes electrode (Pt/TiO2-NTs). By contrast, we fixed Pt on TiO2 dense film by the same procedure as a control sample (Pt/TiO2-F). The scanning electron microscopy and transmission electron microscopy observation showed that Pt nanoparticles were distributed uniformly in nanotube arrays, and Pt/TiO2 NTs showed a higher efficiency in electrocatalytic hydrogen evolution compared with Pt/TiO2-F and commercial Pt/C catalyst, in which the overpotential of Pt/TiO2-NTs was 0.079 V, the Tafel slope was 42.7 mV.dec(-1) at 10 mA.cm(-2). The catalytic activity of 3 000 cycles duration stability test results showed that Pt/TiO2-NTs exhibited excellent stability compared with the above contrast electrodes.
关键词 ：
TiO2 nanotubes carrier TiO2 nanotubes carrier electroplating electroplating electrocatalytic hydrogen evolution electrocatalytic hydrogen evolution platinum-based catalyst platinum-based catalyst
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| GB/T 7714 | Wu An-Ran , Chen Yan-Hui , Wang Xin-Xin et al. Pt/TiO2 Nanotubes Electrode: Preparation by Electroplating Method and Electrocatalytic Hydrogen Evolution Performance [J]. | CHINESE JOURNAL OF INORGANIC CHEMISTRY , 2022 , 38 (2) : 227-236 . |
| MLA | Wu An-Ran et al. "Pt/TiO2 Nanotubes Electrode: Preparation by Electroplating Method and Electrocatalytic Hydrogen Evolution Performance" . | CHINESE JOURNAL OF INORGANIC CHEMISTRY 38 . 2 (2022) : 227-236 . |
| APA | Wu An-Ran , Chen Yan-Hui , Wang Xin-Xin , Zhou Wen-Yuan , He Jia-Wei , Wang Jin-Shu et al. Pt/TiO2 Nanotubes Electrode: Preparation by Electroplating Method and Electrocatalytic Hydrogen Evolution Performance . | CHINESE JOURNAL OF INORGANIC CHEMISTRY , 2022 , 38 (2) , 227-236 . |
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摘要 ：
Aluminum alloys are widely used in the aerospace and automotive industries due to their high strength and low density but also suffer from poor wear resistance. The employment of stable solid lubricants on aluminum alloys will be beneficial for their service life under load-bearing conditions. In this paper, MoSx-W composite coatings were deposited on porous anodic aluminum oxide (AAO)/Al substrates. The effects of tungsten content on the film structure and friction properties were systematically investigated. It is found that tungsten exists as metallic particles within the MoSx matrix, forming a system of hardness phase reinforced soft matrix. With the increase of W content, the film morphology transforms from nano-flower-like to ball-like, associated with an obvious enhancement of film density as well as hardness. The latter prolongs the service life of MoSx films from 10 min only in untreated specimen to 88.8 min in composite sample. Finally, the improvement of wear performance upon tungsten loading was discussed in detail.
关键词 ：
Aluminum alloys Aluminum alloys Solid lubricant Solid lubricant High service life High service life Tungsten Tungsten MoS x film MoS x film
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| GB/T 7714 | Wang, Yue , He, Jiawei , Song, Xiangxian et al. Microstructure and tribological properties of sputtered MoSx-W composite films supported by porous alumina aperture array [J]. | SURFACE & COATINGS TECHNOLOGY , 2022 , 450 . |
| MLA | Wang, Yue et al. "Microstructure and tribological properties of sputtered MoSx-W composite films supported by porous alumina aperture array" . | SURFACE & COATINGS TECHNOLOGY 450 (2022) . |
| APA | Wang, Yue , He, Jiawei , Song, Xiangxian , Zhou, Wenyuan , Chen, Shuqun , Chen, Yanhui et al. Microstructure and tribological properties of sputtered MoSx-W composite films supported by porous alumina aperture array . | SURFACE & COATINGS TECHNOLOGY , 2022 , 450 . |
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摘要 ：
Wearable flexible devices require advanced lithium-ion batteries (LIBs) for energy supply, thus promotes the development of self-assembled, binder-free, film-type anodes with the advantage of no additives, strong binding force and low contact resistance. Among many potential candidates, 2H phase molybdenum disulfide (2H-MoS2) has been attracting much attention due to its high practical capacity and graphene-like structure. However, few interests are paid to the compactness design inside the in-situ grown MoS2 film on bendable matrices, leading to poor structure stability and low volumetric capacity. Herein, film compactness is carefully modulated by controlling the sputtering parameters, then the cross-section microstructure and electrochemical property are systematically investigated. Among them, the dendritic-arranged, middle porosity MoS2 (MP-MoS2) offers abundant Li-ion migration channels, delivering an enhanced charge-discharge capacity of 1136 and 1157 mAh center dot g(-1) (similar to 3.7 Ah.cm(-3)) after 300 cycles at 1C. MP-MoS2 (2 h) with the same structure and increased mass loading can also stably operate for 400 cycles without decay. Notably, it remains stable cycling on titanium and stainless-steel matrices, but the sharp decay often occurs within tens of cycles towards common copper foil due to Cu diffusion and film orientation alteration, implying that low-melting-point flexible matrices are not suitable for in-situ 2H-MoS2 assembling at high temperature. This work provides a practical analyzation strategy for designing film-type 2H-MoS2 anode material used as flexible LIBs.
关键词 ：
lithium-ion batteries lithium-ion batteries Stable cycling Stable cycling Compactness design Compactness design Film-type anodes Film-type anodes 2H phase molybdenum disulfide 2H phase molybdenum disulfide
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| GB/T 7714 | Zu, Guannan , Yang, Yunfei , Li, Hongyi et al. The compactness of 2H-MoS2 thin films determines their performance on lithium storage ability [J]. | MATERIALS CHARACTERIZATION , 2022 , 196 . |
| MLA | Zu, Guannan et al. "The compactness of 2H-MoS2 thin films determines their performance on lithium storage ability" . | MATERIALS CHARACTERIZATION 196 (2022) . |
| APA | Zu, Guannan , Yang, Yunfei , Li, Hongyi , Wang, Juan , Fu, Yonghong , Wang, Xinxin et al. The compactness of 2H-MoS2 thin films determines their performance on lithium storage ability . | MATERIALS CHARACTERIZATION , 2022 , 196 . |
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摘要 ：
Molybdenum disulfide coated aluminum alloys are of great interests in recent years due to their wide application in the space field. In this paper, a 350-400 nm-thick MoS2 film with nano-flowers structure was produced on Porous anodic aluminum oxide (AAO)/Al substrate by magnetron sputtering. It is found that AAO aperture array on aluminum alloy could enhance the resistance of stress and deformation for aluminum matrix, and store the MoS2 within the aperture during friction, resulting into prolonged lubrication time. Significant improvement in the lubrication performance (316.6 x) at low friction coefficient (0.15) was realized compared with MoS2/Al structure, and the wear rate decreased by similar to 98%. Our findings could provide new routes of surface modification for aluminum alloys in aerospace field.
关键词 ：
AAO aperture array AAO aperture array Magnetron sputtering Magnetron sputtering Molybdenum disulfide Molybdenum disulfide MoS2 nano-flowers MoS2 nano-flowers
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| GB/T 7714 | He, Jiawei , Zhou, Wenyuan , Chen, Shuqun et al. Tribological properties of MoS2 nano-flowers supported by porous alumina aperture array [J]. | TRIBOLOGY INTERNATIONAL , 2021 , 161 . |
| MLA | He, Jiawei et al. "Tribological properties of MoS2 nano-flowers supported by porous alumina aperture array" . | TRIBOLOGY INTERNATIONAL 161 (2021) . |
| APA | He, Jiawei , Zhou, Wenyuan , Chen, Shuqun , Wu, Anran , Zhou, Yuqing , Chen, Yanhui et al. Tribological properties of MoS2 nano-flowers supported by porous alumina aperture array . | TRIBOLOGY INTERNATIONAL , 2021 , 161 . |
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摘要 ：
采用液–固掺杂结合两步氢还原法分别制备未添加和添加质量分数0.1％和1.0％Fe的金属W粉,研究了微量Fe元素对WO3还原过程及产物结构特征的影响.结果表明:WO3前驱体粉体经掺杂和煅烧处理后,在其颗粒表层晶格中形成了含Fe固溶体;在氢气还原过程中,Fe的固溶能够降低WO2.9→WO2和WO2→W的还原温度,促进WO3中裂纹和空隙的产生,细化还原W粉尺寸;还原后Fe元素由偏聚在WO3颗粒表面迁移到W颗粒内部,其分布规律发生了明显转变.
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| GB/T 7714 | 陈树群 , 胡海栋 , 周文元 et al. 微量Fe元素对氧化钨粉还原过程的影响 [J]. | 粉末冶金技术 , 2021 , 39 (3) : 209-215 . |
| MLA | 陈树群 et al. "微量Fe元素对氧化钨粉还原过程的影响" . | 粉末冶金技术 39 . 3 (2021) : 209-215 . |
| APA | 陈树群 , 胡海栋 , 周文元 , 胡鹏 , 李洪义 , 王金淑 . 微量Fe元素对氧化钨粉还原过程的影响 . | 粉末冶金技术 , 2021 , 39 (3) , 209-215 . |
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摘要 ：
Diatomite, composed of amorphous macroporous hydrated silica, has generated increasing attention as an attractive raw material for elimination of heavy metal, while suffering low surface activity. Herein, easily separable diatomite adsorbents modified by Zn compounds are developed for effective adsorption of Pb(II), Cu(II) and Cd(II) ions and sunlight photoreduction of toxic Cr(VI) to low-toxic Cr(III). The micro-structure and functionality are characterized through energy spectrum and spectroscopic analysis. Sulfion S2− or carbonyl COO− interlinked networks on the modified diatomite are effective for capturing Pb(II), Cu(II) and Cd(II) ions, and are capable of being oxidized to generate diatomite@ZnO directly at 450 °C in air atmosphere. Significantly, by recycling the used diatomite@ZnS (Dt@ZnS) adsorbents loaded by Cu(II) and Cd(II) ions, Cu or Cd doped ZnO photocatalysts can be fabricated on diatomite to vary band gap energy of ZnO for more efficient absorption of visible light for Cr(VI) photoreduction under sunlight irradiation. Although the derivatives exhibit weakened Cr(VI) photoreduction capacity compared with Dt@ZnS precursor, probably owing to the influence of surface deposits of Cu(II) or Cd(II) on doping efficiency and light absorption, this idea offers a promising solution to convert the used adsorbents loaded by poisonous heavy metals into photocatalysts for secondary utilization in waste water purification, thus making it possible to produce tailor-made materials for specific requirements alternative by the reutilization of discarded heavy metal adsorbents. © 2020 Elsevier B.V.
关键词 ：
Cadmium compounds Cadmium compounds Spectroscopic analysis Spectroscopic analysis Photocatalysis Photocatalysis Copper compounds Copper compounds Heavy metals Heavy metals Oxide minerals Oxide minerals Light absorption Light absorption Lead compounds Lead compounds Water absorption Water absorption Chemicals removal (water treatment) Chemicals removal (water treatment) Chromium compounds Chromium compounds Light Light Silica Silica II-VI semiconductors II-VI semiconductors Energy gap Energy gap Zinc oxide Zinc oxide Irradiation Irradiation Zinc sulfide Zinc sulfide Ions Ions
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| GB/T 7714 | Liu, Jingchao , Wu, Junshu , Wang, Jinshu et al. Surface engineering of diatomite using nanostructured Zn compounds for adsorption and sunlight photocatalysis [J]. | Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2021 , 612 . |
| MLA | Liu, Jingchao et al. "Surface engineering of diatomite using nanostructured Zn compounds for adsorption and sunlight photocatalysis" . | Colloids and Surfaces A: Physicochemical and Engineering Aspects 612 (2021) . |
| APA | Liu, Jingchao , Wu, Junshu , Wang, Jinshu , Ma, Jie , Sun, Lingmin , Du, Yucheng et al. Surface engineering of diatomite using nanostructured Zn compounds for adsorption and sunlight photocatalysis . | Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2021 , 612 . |
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摘要 ：
Hetematom-doped hierarchically porous carbon is attractive electrode material for supercapacitors. However, it still remains a great challenge to develop a high-performance supercapacitor electrode with efficient preparation strategy. Herein, we report a N,O-codoped hierarchically porous carbon (NOHPC) prepared through one-step carbonization/in-situ doping/activation process by using natural diatomite as template and polydopamine as precursor. The as-prepared NOHPC possesses synergistic advantages of abundant redox-active N,O dopants, large effective specific surface area and hierarchically porous (micropores, mesopores and macropores) structure. Benefiting from such advantages, the NOHPC electrode exhibits an extremely high specific capacitance of 436.0 F g(-1) at 0.625 A g(-1) in H2SO4 electrolyte. The as-assembled supercapacitor in H2SO4 electrolyte also yields high specific capacitance (328.3 F g(-1) at 0.625 A g(-1)), excellent rate performance (74.8% capacitance retention, 0.625-25 A g(-1)) and superb cycling stability (93.9%, 10,000 cycles). Besides, the corresponding device in Na2SO4 electrolyte can present an enhanced energy density of 23.4 Wh kg(-1) at the power density of 358.8 W kg(-1) (1 A g(-1)) and still maintain 15.0 Wh kg(-1) at the power density of 8357.8 W kg(-1) (25 A g(-1)). The outstanding electrochemical performance and the efficient preparation process of NOHPC make it a promising widely applied electrode material for supercapacitor.
关键词 ：
Diatomite biotemplate Diatomite biotemplate Hierarchically porous carbon Hierarchically porous carbon Supercapacitor Supercapacitor High specific capacitance High specific capacitance Heteroatom-doped Heteroatom-doped
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| GB/T 7714 | Teng, Weili , Zhou, Qinqin , Wang, Xuekai et al. Biotemplating preparation of N,O-codoped hierarchically porous carbon for high-performance supercapacitors [J]. | APPLIED SURFACE SCIENCE , 2021 , 566 . |
| MLA | Teng, Weili et al. "Biotemplating preparation of N,O-codoped hierarchically porous carbon for high-performance supercapacitors" . | APPLIED SURFACE SCIENCE 566 (2021) . |
| APA | Teng, Weili , Zhou, Qinqin , Wang, Xuekai , Che, Haibing , Du, Yucheng , Hu, Peng et al. Biotemplating preparation of N,O-codoped hierarchically porous carbon for high-performance supercapacitors . | APPLIED SURFACE SCIENCE , 2021 , 566 . |
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摘要 ：
Engineering the local coordination environment in atomically dispersed catalyst has proven to be a prospective route to boost catalyst performance for hydrogen evolution reaction (HER). Herein, we present the utilization of local lattice distortion of TiO2 support to regulate the local coordination environment and electronic structures of atomically dispersed Pt catalysts, resulting in the enhanced performance toward HER. Spectral analysis uncovers an elongated Pt–O bond length, lower Pt–O coordination numbers, as well as less electron holes residing in Pt 5d orbitals for Pt species on distorted TiO2. Density functional theory (DFT) calculation reveal that the variation might weaken the hydrogen adsorption on Pt sites and cause the optimized ΔG value of H∗. As a result, the atomically dispersed Pt catalyst displays superior HER mass activity (62.34 A mg−1 Pt) and the highest turnover frequency (TOF) (56.1H2·s−1) at the 50 mV overpotential in an acid media that are 18.7 and 5.56 times higher than commercial Pt/C. The work should create a new avenue in manipulating the local coordination environment of catalysts via the lattice distortion of the support, and in pursuing desired catalytic performance. © 2021 Elsevier Ltd
关键词 ：
Coordination reactions Coordination reactions Catalyst supports Catalyst supports Electronic structure Electronic structure Density functional theory Density functional theory Bond length Bond length Hydrogen evolution reaction Hydrogen evolution reaction Platinum Platinum Gas adsorption Gas adsorption Spectrum analysis Spectrum analysis Oxide minerals Oxide minerals Hydrogen Hydrogen Titanium dioxide Titanium dioxide
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| GB/T 7714 | Cheng, Xing , Lu, Yue , Zheng, Lirong et al. Engineering local coordination environment of atomically dispersed platinum catalyst via lattice distortion of support for efficient hydrogen evolution reaction [J]. | Materials Today Energy , 2021 , 20 . |
| MLA | Cheng, Xing et al. "Engineering local coordination environment of atomically dispersed platinum catalyst via lattice distortion of support for efficient hydrogen evolution reaction" . | Materials Today Energy 20 (2021) . |
| APA | Cheng, Xing , Lu, Yue , Zheng, Lirong , Pupucevski, Max , Li, Hongyi , Chen, Ge et al. Engineering local coordination environment of atomically dispersed platinum catalyst via lattice distortion of support for efficient hydrogen evolution reaction . | Materials Today Energy , 2021 , 20 . |
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