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| 1 | Rapid degradation of hexachlorobenzene by micron Ag/Fe bimetal particles显示文摘The feasibility of the rapid degradation of hexachlorobenzene (HCB) by micron-size silver (Ag)/iron (Fe) particles was investigated.Ag/Fe particles with different ratios (0,0.05%,0.09%,0.20%,and 0.45%) were prepared by electroless silver plating on 300 mesh Fe powder,and were used to degrade HCB at different pH values and temperatures.The dechlorination ability of Fe greatly increased with small Ag addition,whereas too much added Ag would cover the Fe surface and reduce the effective reaction surface,thereby decreasing the extent of dechlorination.The optimal Ag/Fe ratio was 0.09%.Tafel polarization curves showed that HCB was rapidly degraded at neutral or acidic pH,whereas low pH levels severely intensified H2 production,which consumed the reducing electrons needed for the HCB degradation.HCB degradation was more sensitive to temperature than pH.The rate constant of HCB dechlorination was 0.452 min-1 at 85℃,50 times higher than that at 31℃.HCB was degraded in a successive dechlorination pathway,yielding the main products 1,2,4,5-tetrachlorobenzene and 1,2,4-trichlorobenzene within 2 hr. | Xiaoqin Nie Jianguo Liu Xianwei Zeng Dongbei Yue | 2013 | Journal of Environmental Sciences2013，25，3： | 9 |
| 2 | Inductive heat property of Fe_3O_4 nanoparticles in AC magnetic field for local hyperthermia显示文摘Magnetite (Fe3O4) nanoparticles with different magnetic properties were prepared by coprecipitation of Fe3+ and Fe2+ with aqueous NaOH solution. The inductive heat properties of Fe3O4 nanoparticles in an alternating current (AC) magnetic field were investigated for local hyperthermia. The maximum saturation magnetization Ms of Fe3O4 nanoparticles is 65.53 emu·g-1 under the optimum conditions of Fe3+: Fe2+ molar ratio at 1.8:1. The Ms of Fe3O4 nanoparticles decreased as the Fe3+/Fe2+ molar ratio increased. But the coercivity Hc increases with the increasing of Fe3+/Fe2+ molar ratio. Exposed in the AC magnetic field for 29 min, the temperatures of physiological saline suspension containing Fe3O4 nanoparticles were 42-97.5 ℃. The inductive heat property of Fe3O4 nanoparticles in AC magnetic field decreases as Hc increases, but increases with the increasing of Ms. The Fe3O4 nanoparticles would be useful as good thermoseeds for localized hyperthermia treatment of cancers. | ZHAO Donglin ZENG Xianwei XIA Qisheng TANG Jintian | 2006 | Rare Metals2006，25，z1： | 5 |
| 3 | Fine-tuning inverse metal-support interaction boosts electrochemical transformation of methanol into formaldehyde based on density functional theory显示文摘Different from traditional metal-support heterogenous catalysts,inverse heterogeneous catalysts,in which the surface of metal is decorated by metal oxide,have recently attracted increasing interests owing to the unique interracial effect and electronic structure.However,a deep insight into the effect of metaloxide interaction on the catalytic performance still remains a great challenge.In our work,an inverse hematite/palladium(Fe_(2) O_(3)/Pd) hybrid nanostructure,i.e.,the active Fe_(2) O_(3) ultrathin oxide layers partially covering on the surface of Pd nanoparticles(NPs),exhibited superior electrocatalytic performance towards methanol oxidation reaction(MOR) as compared to the bare Pd NPs based on density functional theory calculation.The charge could transfer from Pd to Fe_(2) O_(3) driven by the built-in potential at the interface of Pd and Fe_(2) O_(3),which favors the downshift of d band center of Pd.With the assistance of interfacial hydroxyl OH*,the cleavage of O—H and C—H in CH_(3) OH could take place much easily with lower barrier ene rgy on Fe_(2) O_(3)/Pd than that on pure Pd via two electrons transferring reaction pathways.Our results highlight that the syne rgy of Pd and Fe_(2) O_(3) at the interface could facilitate the electrochemical transformation of methanol into formaldehyde assisted with interfacial hydroxyl OH*. | Wenjuan Yang Junjun Li Xiaoya Cui Chenhuai Yang Yiting Liu Xianwei Zeng Zhicheng Zhang Qitao Zhang | 2021 | Chinese Chemical Letters2021，32，8： | 2 |
| 4 | Dynamic response of a poroelastic half-space with semi-permeable surface subjected to time-harmonic vertical load显示文摘 | Luo Xi Zeng Xianwei Tang Liqun | 2012 | Advanced Materials Research2012，，： | 1 |
| 5 | Complete estrogen receptor blocker ICI182,780 promotes the proliferation of vascular smooth muscle cells显示文摘ICI182,780 在乳癌的辅助治疗被使用。作为完全的雌激素受体(嗯) blocker, ICI182,780 可以在心血管的系统上反对雌激素的效果。雌激素禁止脉管的光滑的肌肉房间(VSMC ) 的增长,它是雌激素能施加的机制之一 cardioprotective 效果。在现在的学习,在 VSMC 的增长上估计 ICI182,780 的效果,我们从老鼠主动脉孤立与或没有 ER 对手 ICI182,780 的有教养的 VSMC。3-(4,5-dimethylthiazol-2-yl ) 的结果 -2,5-diphenyltetrazolium 溴化物试金, bromodeoxyuridine 加入试金,可行房间计数,为增殖的房间的免疫化学的染色原子抗原(PCNA ) ,和流动 cytometry 决定的 S 阶段比率在 ICI182,780 治疗以后揭示了 VSMC 的显著增长。ICI182,780 显著地以一种剂量依赖者方式提高了房间生长(10 ? 810 ? 5 M ) 。而且, PCNA 积极的房间的数字和 VSMC 的 S 阶段前进与 ICI182,780 在治疗以后增加了。反向的 transcriptase 聚合酶链反应(RTPCR ) 和西方的污点分析证明在 VSMC 的 cyclin D1 的 mRNA 和蛋白质水平在 ICI182,780 的处理下面增加了。这些数据建议 ICI182,780 能支持 VSMC 的生长,它可能在心血管的系统上生产一些不利效果。 | Hong He Falin Yang Xin Wang Xianwei Zeng Qin Hu Jinghuan Huang Jinbo Feng | 2011 | Acta Biochimica et Biophysica Sinica2011，43，2： | 1 |
| 6 | Cement-based solidification/stabilization of contaminated soils by nitrobenzene显示文摘 | Jianguo LIU Xiaoqin NIE Xianwei ZENG Zhaoji SU | 2012 | Frontiers of Environmental Science & Engineering2012，6，3： | 1 |
| 7 | Three-dimensional S-wave velocity structure of the crust and upper mantle for the normal fault system beneath the Yinchuan Basin from joint inversion of receiver function and surface wave显示文摘A series of parallel normal faults are distributed in the Helan Mountain-Yinchuan Basin tectonic belt,where a historical M8.0 earthquake occurred.It is rare that such a great earthquake occurs in a normal fault system within the continent.To deeply understand the fine structure of the normal fault system,we deployed 104 broadband temporary stations near the system,collected data from permanent stations and other temporary stations nearby,and obtained the high-precision threedimensional S-wave velocity structure beneath 206 stations via joint inversion of receiver function and surface wave.A typical graben-in-graben feature bounded by four major faults was identified in the Yinchuan Basin.We analyzed the seismicity in the normal fault system and found a seismic strip in the southern part of the basin,where there are significant changes in the sedimentary thickness,which is speculated to be the southern boundary of the normal fault system.There are significant differences in the crustal thickness and velocity structure in the crust on both sides of the boundary between the Helan Mountain and the Yinchuan Basin,and a low-velocity zone was identified in the upper mantle beneath this boundary,which could be related to the fact that the Helan Mountain-Yinchuan Basin tectonic belt is located between the Alxa Block and the Ordos Block.The M8.0 Yinchuan-Pingluo earthquake occurred at the junction of four major faults in the Yinchuan Basin,which was located in the high-velocity zone near the velocity transition zone at the basin-mountain boundary.The low-velocity zone in the upper mantle beneath this boundary may have promoted the nucleation of this earthquake.Based on evidence from geological drilling,micro seismicity,the regional stress field,and the velocity models obtained in this study,it is inferred that the eastern piedmont fault zone of the Helan Mountain was the seismogenic fault of the 1739 M8.0 Yinchuan-Pingluo earthquake. | Weilai WANG Guangyao CAI Guijuan LAI Xianwei ZENG Jingjing BAO Long ZHANG Jun SU Mingfei CHEN | 2023 | Science China Earth Sciences2023，66，5： | 0 |
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