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学者姓名：王金淑
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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 ：
In this study, the structural, elastic, and thermodynamic properties of DO19 and L12 structured Co3X (X = W, Mo or both W and Mo) and μ structured Co7X6 were investigated using the density functional theory implemented in the pseudo-potential plane wave. The obtained lattice constants were observed to be in good agreement with the available experimental data. With respect to the calculated mechanical properties and Poisson's ratio, the DO19-Co3X, L12-Co3X, and μ-Co7X6 compounds were noted to be mechanically stable and possessed an optimal ductile behavior; however, L12-Co3X exhibited higher strength and brittleness than DO19-Co3X. Moreover, the quasi-harmonic Debye-Grüneisen approach was confirmed to be valid in describing the temperature-dependent thermodynamic properties of the Co3X and Co7X6 compounds, including heat capacity, vibrational entropy, and Gibbs free energy. Based on the calculated Gibbs free energy of DO19-Co3X and L12-Co7X6, the phase transformation temperatures for DO19-Co3X to L12-Co7X6 were determined and obtained values were noted to match well with the experiment results.
关键词 ：
tungsten tungsten cobalt cobalt alloys alloys thermodynamic property thermodynamic property molybdenum molybdenum mechanical property mechanical property first-principles calculations first-principles calculations
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| GB/T 7714 | Yang Yunfei , Wang Changhao , Sun Junhao et al. First-Principles Study of Mechanical and Thermodynamic Properties of Binary and Ternary CoX (X = W and Mo) Intermetallic Compounds. [J]. | Materials , 2021 , 14 (6) . |
| MLA | Yang Yunfei et al. "First-Principles Study of Mechanical and Thermodynamic Properties of Binary and Ternary CoX (X = W and Mo) Intermetallic Compounds." . | Materials 14 . 6 (2021) . |
| APA | Yang Yunfei , Wang Changhao , Sun Junhao , Li Shilei , Liu Wei , Wu Hao et al. First-Principles Study of Mechanical and Thermodynamic Properties of Binary and Ternary CoX (X = W and Mo) Intermetallic Compounds. . | Materials , 2021 , 14 (6) . |
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摘要 ：
锇靶是制备M型阴极常用的一类靶材,须具有纯度高、致密度高、晶粒细小等特性,然而,传统工艺烧结因烧结温度较高获得的靶材晶粒较粗大,对阴极覆膜沉积不利.本研究对锇粉模压成圆饼压坯,之后采用微波烧结压坯.微波烧结锇压坯过程中以碳化硅、氧化锆作为辅助加热材料,氧化铝作为保温材料,升温速率在20～30 min/℃之间.结果 表明,当随着压强从100增加到300MPa,微波烧结1500℃保温60 min后,样品相对密度从80.61％快速增加到93.44％.当压强继续增加到400MPa时,相对密度随着压强的增长变缓达到94.25％.当压强从400增加到500MPa,烧结后样品的相对密度增长不明显,并有裂纹出现.锇烧结体的相对密度和直径收缩率随着保温时间的延长先快速增加,然后缓慢增加,最后增加趋于平缓.在微波烧结1500℃下,随着保温时间的延长直径收缩率从11.67％快速增加到14.99％,然后缓慢增加到15.56％,相对密度从87.97％快速增加到93.78％,然后缓慢增加到94.25％,而孔隙的数量和尺寸随着保温时间的延长而减小,最终呈球形,晶粒尺寸在1 μm左右.
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| GB/T 7714 | 李世磊 , 刘伟 , 王金淑 et al. 微波烧结锇的初步研究 [J]. | 真空电子技术 , 2021 , (3) : 54-59 . |
| MLA | 李世磊 et al. "微波烧结锇的初步研究" . | 真空电子技术 3 (2021) : 54-59 . |
| APA | 李世磊 , 刘伟 , 王金淑 , 周帆 , 谢元峰 , 夏扬 et al. 微波烧结锇的初步研究 . | 真空电子技术 , 2021 , (3) , 54-59 . |
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摘要 ：
为了更好地低成本处理水体中的氨氮、硫等污染物,对天然矿物蛭石颗粒进行NaCl层间处理、对火山岩颗粒进行FeCl_3表面处理。利用扫描电镜、X射线衍射、红外光谱等手段对矿物颗粒进行表征;同时研究蛭石和火山岩处理前后对氨氮、硫的吸附性能,分析讨论2种矿物颗粒对氨氮、硫的吸附机理。结果表明:在最佳条件下,Na化蛭石对氨氮的吸附容量由原来的21.4 mg/g提高到29.3 mg/g,对水体中氨氮的去除率由86.7%提高到93.4%;改性火山岩对硫化物的吸附容量由原来的3.1 mg/g提高到36.9 mg/g;蛭石颗粒对氨氮的去除以物理吸附为主,火山岩颗粒对硫的吸附以化学吸附为主。
关键词 ：
火山岩 火山岩 氨氮吸附 氨氮吸附 蛭石 蛭石 表面修饰 表面修饰
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| GB/T 7714 | 杜玉成 , 史默涵 , 林彭辉 et al. 基于水体中氨氮、硫净化矿物颗粒的制备与性能 [J]. | 中国粉体技术 , 2021 , 27 (06) : 19-28 . |
| MLA | 杜玉成 et al. "基于水体中氨氮、硫净化矿物颗粒的制备与性能" . | 中国粉体技术 27 . 06 (2021) : 19-28 . |
| APA | 杜玉成 , 史默涵 , 林彭辉 , 李杨 , 甄爽 , 马延龙 et al. 基于水体中氨氮、硫净化矿物颗粒的制备与性能 . | 中国粉体技术 , 2021 , 27 (06) , 19-28 . |
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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 ：
Many creatures have a unique anisotropic structure and special wettability on their skins, presenting intriguing water transporting properties. Inspired by the biosphere, a two-dimensional titanium dioxide-based hydrophilic channel possessing anisotropic superhydrophobic barriers was synthesized. This channel demonstrates unidirectional water transporting properties. When water is injected into the channel, fluid tends to spread in a specific direction. An asymmetric spreading resistance is generated by the different interaction modes between the liquid and superhydrophobic barriers. The superhydrophobic barriers are designed as two main styles: line and curve. As for line barriers, the included angle between barrier and horizontal is the key parameter for the unidirectional water transporting ability whereas, for curve barriers, the radius is an important variable. The best design scheme for unidirectional water transporting properties could be found by varying the parameters of these two types of barriers in the channel. Overall, this study is expected to have a significant implication in the water transporting field.
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| GB/T 7714 | An, Qier , Wang, Jinshu , Zhao, Feng et al. Unidirectional water transport on a two-dimensional hydrophilic channel with anisotropic superhydrophobic barriers [J]. | SOFT MATTER , 2021 , 17 (35) : 8153-8159 . |
| MLA | An, Qier et al. "Unidirectional water transport on a two-dimensional hydrophilic channel with anisotropic superhydrophobic barriers" . | SOFT MATTER 17 . 35 (2021) : 8153-8159 . |
| APA | An, Qier , Wang, Jinshu , Zhao, Feng , Li, Peiliu , Wang, Lei . Unidirectional water transport on a two-dimensional hydrophilic channel with anisotropic superhydrophobic barriers . | SOFT MATTER , 2021 , 17 (35) , 8153-8159 . |
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摘要 ：
Heavy metal ions pollution has caused worldwide attention due to its toxicity to people's health. Existing as chromate anions, Cr(VI) is difficult to remove from polluted water. Owing to their low cost, stability, environmentally benign nature, and excellent properties, silicate materials are widely used in catalysis and adsorption. In this work, magnesium silicates with sepiolite and talc phase were synthesized through facile hydrothermal route using diatomite as substrate and silicon source. The Cr removal capacity of wire-like Mg4Si6O15(OH)2diatomite exhibited a Cr adsorption capacity of 1292 mg/g, which was much higher than the other reported inorganic adsorbents. The adsorption followed Freundlich and Temkin models well, indicating that Cr species adsorbed onto adsorbent was a favorable, exothermic multilayer chemisorption process. The first-principles density functional theory (DFT) calculation results revealed the interaction between adsorptive sites of adsorbents and Cr species, also demonstrated ion-exchange behavior between interlayer Mg ion and Cr(III). We believe these low-cost synthesized adsorbents have great potentials for practical applications in the treatment of heavy metal ions polluted wastewater.
关键词 ：
Adsorption capacity Adsorption capacity Adsorption mechanism Adsorption mechanism First-principles density functional theory (DFT) First-principles density functional theory (DFT) Heavy metal ions Heavy metal ions Magnesium silicate Magnesium silicate
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| GB/T 7714 | Wang, Xuekai , Wang, Jinshu , Teng, Weili et al. Fabrication of highly efficient magnesium silicate and its adsorption behavior towards Cr(VI) [J]. | MICROPOROUS AND MESOPOROUS MATERIALS , 2021 , 323 . |
| MLA | Wang, Xuekai et al. "Fabrication of highly efficient magnesium silicate and its adsorption behavior towards Cr(VI)" . | MICROPOROUS AND MESOPOROUS MATERIALS 323 (2021) . |
| APA | Wang, Xuekai , Wang, Jinshu , Teng, Weili , Du, Yucheng , Wu, Junshu , Guo, Fan et al. Fabrication of highly efficient magnesium silicate and its adsorption behavior towards Cr(VI) . | MICROPOROUS AND MESOPOROUS MATERIALS , 2021 , 323 . |
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摘要 ：
In this work, a one-step thermal plasma synthesis route was developed to construct core-shell W-Cu nanoparticles with size about 30 nm. As synthesized nanocomposite powders address the issues of homogeneous elemental distribution and short diffusion distance for Cu to form network around W grains, facilitating fast densification with uniform microstructure and suppressed W grain growth. As a result, compact with high relative density of 99.31% and grain size of 260 nm was obtained at low temperature of 1100 degrees C, further led to the recorded hardness of 562 Vickers-hardness (Hv) and electrical conductivity of 54.32% International Annealed Copper Standard (IACS), respectively. (C) 2020 Elsevier B.V. All rights reserved.
关键词 ：
Core-shell nanoparticles Core-shell nanoparticles Electrical conductivity Electrical conductivity Hardness Hardness Thermal plasma synthesis Thermal plasma synthesis W-Cu alloys W-Cu alloys
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| GB/T 7714 | Li, Xiaojing , Hu, Peng , Wang, Jinshu et al. In situ synthesis of core-shell W-Cu nanopowders for fabricating full-densified and fine-grained alloys with dramatically improved performance [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 853 . |
| MLA | Li, Xiaojing et al. "In situ synthesis of core-shell W-Cu nanopowders for fabricating full-densified and fine-grained alloys with dramatically improved performance" . | JOURNAL OF ALLOYS AND COMPOUNDS 853 (2021) . |
| APA | Li, Xiaojing , Hu, Peng , Wang, Jinshu , Chen, Shuqun , Zhou, Wenyuan . In situ synthesis of core-shell W-Cu nanopowders for fabricating full-densified and fine-grained alloys with dramatically improved performance . | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 853 . |
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摘要 ：
The cathode in the magnetron should have good secondary emission property and a certain thermionic property. In this article, ZrH2 was added as an activator to obtain rare earth-doped tungsten matrix impregnated cathode to improve the emission property. Cathodes with ZrH2 (Y15-411-Zr cathode) or without ZrH2 (Y15-411 cathode) were prepared by a spray drying method combined with high-Temperature sintering in dry hydrogen atmosphere. The emission properties and emission mechanism have been studied. The results showed that thermionic emission performance and secondary emission performance of Y15-411-Zr cathode are 3.4 times and 1.2 times higher than those of Y15-411 cathode, respectively. With the addition of ZrH2, yttrium was produced during activating process, which contributed to the better emission properties of Y15-411-Zr cathode. Furthermore, the work function of barium and oxygen adsorbed on yttrium oxide and yttrium surface was calculated using the first principle. The results showed that the lowest work function of Ba-O absorbed on Y2O3 and Y is 1.9 and 1.6 eV, respectively. © 1963-2012 IEEE.
关键词 ：
Barium Barium Barium compounds Barium compounds Cathodes Cathodes Magnetrons Magnetrons Rare earths Rare earths Secondary emission Secondary emission Sintering Sintering Thermionic emission Thermionic emission Tungsten Tungsten Work function Work function Yttrium oxide Yttrium oxide
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| GB/T 7714 | Zhang, Xiaoke , Hua, Yazhou , Wang, Jinshu et al. Studies of the Influence of ZrH2Addition to the Impregnant on the Performance of Yttrium Oxide-Tungsten Matrix Ba Dispenser Cathodes [J]. | IEEE Transactions on Electron Devices , 2021 , 68 (2) : 829-834 . |
| MLA | Zhang, Xiaoke et al. "Studies of the Influence of ZrH2Addition to the Impregnant on the Performance of Yttrium Oxide-Tungsten Matrix Ba Dispenser Cathodes" . | IEEE Transactions on Electron Devices 68 . 2 (2021) : 829-834 . |
| APA | Zhang, Xiaoke , Hua, Yazhou , Wang, Jinshu , Yang, Yunfei , Liu, Wei . Studies of the Influence of ZrH2Addition to the Impregnant on the Performance of Yttrium Oxide-Tungsten Matrix Ba Dispenser Cathodes . | IEEE Transactions on Electron Devices , 2021 , 68 (2) , 829-834 . |
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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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