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Fabrication of NiFe layered double hydroxide with well-defined laminar superstructure as highly efficient oxygen evolution electrocatalysts

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Nano Research 2019年第6期12卷 1327-1331页

作者： Hao Zhang Haoyi Li bilal akram Xun Wang Department of Chemistry Tsinghua UniversityBeijing 100084China

Structure-activity relationship (SAR) is the key problem of nanoscience,thus to fabricate novel and well-defined nanostructure will provide a new insight on catalyst preparation *** active and low cost electrocatalysts for oxygen evolution reaction (OER) are of great importance for future renewable energy conversion and ***,NiFe-based layered double hydroxides with laminar structure (NFLS) were successfully fabricated via a one-step hydrothermal approach by using sodium dodecyl sulfate as *** as-fabricated NFLS showed a well-defined periodic layered-stacking geometry with a scale down to *** from the unique structure,NFLS exhibited an excellent catalytic activity towards OER with current densities of 10 mA·cm^-2 at overpotential of 197 *** synergistic effect of Ni and Fe plays a key role in electrode *** present work provides a new insight to improve the OER performance by rational design of electrocatalysts with unique structures.

关键词： layered double hydroxide structure-activity relationship ultrathin nanostructure electrocatalysis oxygen evolution reaction

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2-Methylimidazole assisted ultrafast synthesis of carboxylate-based metal–organic framework nano-structures in aqueous medium at room temperature

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Science Bulletin 2019年第15期64卷 1103-1109页

作者： Shaheed Ullah bilal akram Hassan Ali Hao Zhang Haozhou Yang Qingda Liu Xun Wang Key Laboratory of Organic Opteoelectronics and Molecular Engineering Department of Chemistry Tsinghua University

Carboxylate-based metal–organic frameworks(CMOFs)have received considerable attentions for their high stability,catalytic activity,and ***,synthesis of CMOFs requires high temperature,pressure,and long reaction ***,we explored the activity of 2-methylimidazole(2-MIM)for ultrafast synthesis of CMOF nanostructures(CMOFNs),in aqueous medium at room temperature and reaction time of 10 *** CMOFNs have been synthesized by using Al3+,Cr3+,Cu2+,Fe3+,In3+,or Cd2+salt and1,4-bezenedicarboxylic acid,or 1,3,5-benzenetricarboxylic *** this technique,the CMOFs with space time yield 181–501 kgcrystal sizes of ca.200–700 nm was obtained.

关键词： Metal-organic framework Carboxylate 2-Methylimidazole Room temperature synthesis Nanostructures

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Optimization of Neutrino Oscillation Parameters Using Differential Evolution

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Communications in Theoretical Physics 2013年第3期59卷 324-330页

作者： Ghulam Mustafa Faisal akram bilal Masud Centre for High Energy Physics University of the PunjabLahore(54590)Pakistan

We show how the traditional grid based method for finding neutrino oscillation parameters m2 and tan 2θ can be combined with an optimization technique,Differential Evolution(DE),to get a significant decrease in computer processing time required to obtain minimal chi-square(χ2) in four different regions of the parameter *** demonstrate efficiency for the two-neutrinos *** this,the χ2 function for neutrino oscillations is evaluated for grids with different density of points in standard allowed regions of the parameter space of m2 and tan 2θ using experimental and theoretical total event rates of chlorine(Homestake),Gallex+GNO,SAGE,Superkamiokande,and SNO *** find that using DE in combination with the grid based method with small density of points can produce the results comparable with the one obtained using high density grid,in much lesser computation time.

关键词：中微子振荡差分进化振荡参数优化使用参数空间计算时间计算机处理高密度

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Isolation and efficacy of entomopathogenic fungus(Metarhizium anisopliae)for the control of Aedes albopictus Skuse larvae:suspected dengue vector in Pakistan

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Asian Pacific Journal of Tropical Biomedicine 2012年第4期2卷 298-300页

作者： Hazrat bilal Soaib Ali Hassan Imtinan akram Khan Medical Entomology and Disease Vector Control Health Services Academy

Objective:To isolate the entomopathogenic fungus Metarhixium anisopliae(***) in the local environment,and evaluate its efficacy against the suspected dengue vector Aedes albopictus in ***:According to the standard procedure,*** was isolated from the dead mosquitoes which were collected from the field or dead after the *** was performed to determine its ***:The results indicated that *** had larvicidal effect with LC,value 1.09×10~5 and LC_(50) value 1.90×10^(13) while it took 45.41 h to kill 50% of tested ***:Taking long time to kill 50%population when compare with the synthetic insecticides,is the only drawback for the use of entomopathogenic fungus but these bio-pesticides are safe for the use.

关键词： Aedes Entomopathogenic fungus

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D^0D^^0＊(D^0D^0＊) system in QCD-improved many body potential

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Chinese Physics C 2017年第1期41卷 60-71页

作者： M.Imran Jamil bilal Masud Faisal akram S.M.Sohail Gilani University of Management and Technology Lahore Pakistan Centre For High Energy Physics Punjab University Lahore(54590) Pakistan

For a system of current interest（composed of charm, anticharm and a pair of light quarks）, we show trends in phenomenological implications of QCD-based improvements to a simple quark model treatment. We employ a resonating group method to render this difficult four-body problem manageable. We use a quadratic confinement so as to be able to improve beyond the Born approximation. We report the position of the pole corresponding to the D^0D^0＊ molecule for the best fit of a model parameter to the relevant QCD simulations. We point out the interesting possibility that the pole can be shifted to 3872 Me V by introducing another parameter I0 that changes the strength of the interaction in this one component of X（3872）. The revised value of this second parameter can guide future trends in modeling of the full exotic meson X（3872）. We also report the changes with I_0 in the S-wave spin averaged cross sections for D^0D^0＊-→ωJ/ψ and D^0D^0＊-→ρJ/ψ. These cross sections are important regarding the study of QGP（quark gluon plasma）.

关键词： meson-meson interaction resonating group method quark potential model X(3872)

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