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学者姓名：李洪义
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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 Magnesium ferrite Magnesium ferrite Steel Slag Steel Slag
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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 ：
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 Heteroatom-doped Heteroatom-doped Hierarchically porous carbon Hierarchically porous carbon High specific capacitance High specific capacitance Supercapacitor Supercapacitor
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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 ：
Bond length Bond length Catalyst supports Catalyst supports Coordination reactions Coordination reactions Density functional theory Density functional theory Electronic structure Electronic structure Gas adsorption Gas adsorption Hydrogen Hydrogen Hydrogen evolution reaction Hydrogen evolution reaction Oxide minerals Oxide minerals Platinum Platinum Spectrum analysis Spectrum analysis 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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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 ：
Metastable phase in tungsten film is of great interests in recent years due to its giant spin Hall effects, however, little information has been known on its nucleation, growth and phase transformation. In this paper, a 900 nm-thick tungsten film with double-layer structure (α-W underlayer and β-W above it) was produced on SiO2/Si substrate by high vacuum magnetron sputtering at room temperature. The structural properties of β-W were systemically investigated by X-ray diffraction, transmission electron microscopy, thermodynamic calculation, first-principle and phase-field simulations. It is found that the β-W nucleation is energetically favoured on the SiO2 surface compared to the α-W one. As the film thickening proceeds, β-W[211] turns to be preferred direction of growth owing to the elastic strain energy minimization, which is verified by phase-field simulations. Moreover, the β→α phase transformation takes place near the film-substrate interface while the rest of the film keeps the β-W phase, leading to a double-layer structure. This localized phase transition is induced by lower Gibbs free energy of α-W phase at larger grain sizes, which can be confirmed by thermodynamic calculation. Further in-situ heating TEM analysis of the as-deposited film reveals that the β→α phase transformation is fulfilled by α/β interface propagation rather than local atomic rearrangements. Our findings offer valuable insights into the intrinsic properties of metastable phase in tungsten. © 2021
关键词 ：
Crystallization Crystallization Film growth Film growth Free energy Free energy Gibbs free energy Gibbs free energy Grain growth Grain growth High resolution transmission electron microscopy High resolution transmission electron microscopy Metastable phases Metastable phases Nucleation Nucleation Silica Silica Silicon Silicon Spin Hall effect Spin Hall effect Strain energy Strain energy Tungsten Tungsten
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| GB/T 7714 | Chen, Shuqun , Wang, Jinshu , Wu, Ronghai et al. Insights into the nucleation, grain growth and phase transformation behaviours of sputtered metastable β-W films [J]. | Journal of Materials Science and Technology , 2021 , 90 : 66-75 . |
| MLA | Chen, Shuqun et al. "Insights into the nucleation, grain growth and phase transformation behaviours of sputtered metastable β-W films" . | Journal of Materials Science and Technology 90 (2021) : 66-75 . |
| APA | Chen, Shuqun , Wang, Jinshu , Wu, Ronghai , Wang, Zheng , Li, Yangzhong , Lu, Yiwen et al. Insights into the nucleation, grain growth and phase transformation behaviours of sputtered metastable β-W films . | Journal of Materials Science and Technology , 2021 , 90 , 66-75 . |
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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 Chemicals removal (water treatment) Chemicals removal (water treatment) Chromium compounds Chromium compounds Copper compounds Copper compounds Energy gap Energy gap Heavy metals Heavy metals II-VI semiconductors II-VI semiconductors Ions Ions Irradiation Irradiation Lead compounds Lead compounds Light Light Light absorption Light absorption Oxide minerals Oxide minerals Photocatalysis Photocatalysis Silica Silica Spectroscopic analysis Spectroscopic analysis Water absorption Water absorption Zinc oxide Zinc oxide Zinc sulfide Zinc sulfide
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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 ：
利用磁控溅射(PVD)、化学气相沉积(CVD)以及热扩散渗硅方法在TC4钛合金表面制备WSi2/W5 Si3复合涂层.采用X射线衍射仪、扫描电镜、能谱仪对复合涂层的结构、组织形貌以及微区化学成分进行分析;对复合涂层显微硬度、附着力以及耐磨性进行测试.结果表明:WSi2/W5 Si3复合涂层的WSi2层和W5 Si3层厚度分别为20、56μm,显微硬度平均值分别为10.70和8.32 GPa;WSi2/W5 Si3复合涂层与基体结合力为171.6 N;WSi2/W5 Si3复合涂层表面摩擦因数为0.75,磨损率为1.184×10-6 mm3·mm-1.在TC4钛合金表面制备的WSi2/W5 Si3复合涂层结构均匀致密,与基体结合良好.
关键词 ：
钛合金 钛合金 结合力 结合力 化学气相沉积 化学气相沉积 复合涂层 复合涂层 耐磨性 耐磨性
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| GB/T 7714 | 吴龙 , 马捷 , 魏建忠 et al. TC4钛合金表面WSi2/W5Si3复合涂层制备及性能研究 [J]. | 钛工业进展 , 2020 , 37 (5) : 18-22 . |
| MLA | 吴龙 et al. "TC4钛合金表面WSi2/W5Si3复合涂层制备及性能研究" . | 钛工业进展 37 . 5 (2020) : 18-22 . |
| APA | 吴龙 , 马捷 , 魏建忠 , 李洪义 . TC4钛合金表面WSi2/W5Si3复合涂层制备及性能研究 . | 钛工业进展 , 2020 , 37 (5) , 18-22 . |
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摘要 ：
To provide clean energies, great efforts have been contributed to hydrogen production via photocatalytic water splitting over the past decades. Among many potential materials, TiO2 nanotube array has been considered as one of the most attractive photoanodes due to its advantages, such as low cost, non-toxicity and chemical stability. It has been discovered that TiO2 nanotube arrays (TNTs)' photocatalytic performance was dictated by their morphologies, which is mainly controlled by the outer voltage. In order to further understand the effect of TNTs' morphologies on their photocatalytic capability, TNTs with different structures had been fabricated under different voltage (10, 20, 30, 40 and 50 V). The obtained TNTs' morphologies and phase were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray diffraction analyzer (XRD). The photocatalytic properties of TNTs were investigated in aqueous solution under xenon lamp irradiation. It was identified that the highest hydrogen production of the sample synthesized at the voltage of 30 V was 1979.8 mu mol/h during the first cycle.
关键词 ：
Anodization Anodization Photocatalytic Hydrogen Production Photocatalytic Hydrogen Production TiO2 Nanotube Arrays TiO2 Nanotube Arrays
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| GB/T 7714 | Zu, Guannan , Li, Hongyi , Jiao, Peng et al. Effect of TiO2 Nanotube Arrays Morphology/Structure on Photocatalytic Hydrogen Production [J]. | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY , 2020 , 20 (2) : 852-857 . |
| MLA | Zu, Guannan et al. "Effect of TiO2 Nanotube Arrays Morphology/Structure on Photocatalytic Hydrogen Production" . | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 20 . 2 (2020) : 852-857 . |
| APA | Zu, Guannan , Li, Hongyi , Jiao, Peng , Li, Pingping , Wang, Xinxin , Wang, Jinshu . Effect of TiO2 Nanotube Arrays Morphology/Structure on Photocatalytic Hydrogen Production . | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY , 2020 , 20 (2) , 852-857 . |
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摘要 ：
在钛基体表面制备结合良好的钼涂层,提高钛合金耐蚀、耐磨性能,为进一步制备二硫化钼、二硅化钼涂层提供基础。采用磁控溅射、化学气相沉积(CVD)等方法在钛上制备出钼复合涂层;测试分析磁控溅射、CVD等方法制备钼复合涂层与钛基体的结合力;对钼复合涂层的结构、成分、组织形貌、硬度、耐磨性等进行分析。研究结果表明:钛基体上磁控溅射铜后CVD钨进而CVD钼,复合涂层临界载荷提升至168.5 N,表面硬度提升至649.3 HV,磨损率从0.035%降到0.007 3%;在钛合金表面利用磁控溅射铜与CVD钨相结合的方式制备的铜/钨复合过渡层可有效防止沉积钼过程中钛基体表面发生氢脆和侵蚀,使钼涂层与钛基体的结合...
关键词 ：
结合力 结合力 化学气相沉积 化学气相沉积 钛合金 钛合金 钼复合涂层 钼复合涂层 耐磨性 耐磨性
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| GB/T 7714 | 程文涛 , 马捷 , 魏建忠 et al. 钛合金表面化学气相沉积钼复合涂层制备工艺 [J]. | 兵工学报 , 2020 , 41 (11) : 2320-2325 . |
| MLA | 程文涛 et al. "钛合金表面化学气相沉积钼复合涂层制备工艺" . | 兵工学报 41 . 11 (2020) : 2320-2325 . |
| APA | 程文涛 , 马捷 , 魏建忠 , 李洪义 , 吴龙 . 钛合金表面化学气相沉积钼复合涂层制备工艺 . | 兵工学报 , 2020 , 41 (11) , 2320-2325 . |
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