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7篇 您的检索式:作者名="CHENG RongMing"
    题名 作者 年代 出处 被引量
1Efficient photo-assisted Fenton oxidation treatment of multi-walled carbon nanotubes显示文摘In this paper,a new and efficient way to oxidize and functionalize the multi-walled carbon nanotubes (MWNTs) has been developed by using a combination of ultraviolet (UV) irradiation and Fenton oxida-tion process,namely UV/Fenton oxidation treatment. Comparing with conventionally individual Fenton oxidation treatment of MWNTs,UV/Fenton combined treatment improved the etching rates and effi-ciencies and hence reduced the time for surface modification of MWNTs,which was proved to be an effective method in etching and functionalizing CNTs. The formation of new functional groups,struc-tural changes and thermal stability during oxidation period were characterized by Fourier transform infrared spectroscopy (FTIR),Raman spectroscopy and could be clarified by thermogravimetric analy-sis (TGA),which showed that it was under UV irradiation conditions that MWNTs could be rapidly functionalized with hydroxyl,carbonyl and carboxyl groups in the presence of Fenton reagents,origi-nating from the increase in the gross HO· concentration and the existent synergetic effect when using UV irradiation combing with Fenton oxidation process. Introduction of such new oxygen-containing functional groups was attributed to attacks of HO· on defect sites and unsaturated bonds of C=C in the MWNTs sample,which should play an important role in accounting for the FTIR and Raman spectral changes.FAN CaiLing LI Wei LI Xin ZHAO ShiJu ZHANG Ling MO YuJun CHENG RongMing 2007Chinese Science Bulletin2007,52,15:4
2NiPt hollow nanocatalyst: Green synthesis, size control and electrocatalysis显示文摘Nearly monodispersed hollow nanospheres of bimetallic NiPt have been synthesized by a one-pot wet chemical method at room temperature with a precursor Ni nanocompound as a sacrificial template. The size control is carried out via the sacrificial template, from about 35 nm to nearly100 nm in diameter. The shell thickness of the NiPt hollow sphere reaches down to as thin as 2–3 nm slightly larger than a single layer of alloyed NiPt nanocrystallites. The product with the citric acid as surfactant exhibits enhanced oxygen reduction activities compared to a commercial Pt/C catalyst and the hollow nanospheres coated with PVP. It has potential applications in fuel cells, biotechnology and environmental chemistry with the facile synthesis, low cost and excellent electrocatalytic activity.Aixian Shan Ming Cheng Hongsheng Fan Zhichao Chen Rongming Wang Chinping Chen 2014Progress in Natural Science:Materials International2014,24,2:3
3Layer-controlled Pt-Ni porous nanobowls with enhanced electrocatalytic performance显示文摘空、多孔的基于磅的 nanomaterials 在象燃料房间那样的许多持续精力技术用应用正在答应催化剂。节俭、绿的合成线路是高度合乎需要的。这里,我们报导一条灵巧的途径与多孔的壳准备双 layered 和单人赛分层的 Pt-Ni nanobowls (DLNB 和 SLNB ) 。微结构分析表明壳 alloyed Pt-Ni nanocrystals 和 Ni 混合物的小数量被构造。X 光检查光电子系列证明他们的磅 4f 绑定精力商业 Pt/C 催化剂与那些相比变在否定方向。而且, DLNB 比 SLNB 包含了氧化 Ni 种类的更大的内容。控制层的生长过程被显微镜学证实,并且形成机制基于柠檬酸盐并且 poly 的帮助(vinylpyrrolidone )(PVP ) 被建议。为甲醇氧化反应, DLNB 和 SLNB 分别地比商业 Pt/C 催化剂的展出了高 2.9 和 2.5 倍的集体活动。活动改进被归因于电子效果和 bifunctional 机制。Chronoamperometry 和延长周期的 voltammetry 显示 Pt-Ni 像碗的结构最好电气化学的性质和结构的稳定性比商业 Pt/C 催化剂,因此在直接甲醇为使用使 Pt-Ni nanobowls 成为优秀 electrocatalysts 造成房间。Hongsheng Fan Ming Cheng Zhenlei Wang Rongming Wang 2017Nano Research2017,10,1:1
4Hydrothermal microemulsion synthesis of stoichiometric single crystal hy droxyapatite nanorods with mono-dispersion and narrow-size distribution 显示文摘Lin Kaili Chang Jiang Cheng Rongming 2007Materials Letters2007,61,:1
5Giant enhancement and anomalous temperature dependence of magnetism in monodispersed NiPt2 nanoparticles显示文摘A simple yet general one-step solvothermal method is applied to synthesizesub-7 nm monodispersed single-crystal NiPt2 nanoparticles (NPs) with themorphology of truncated octahedrons in the alloying state of disordered atomicarrangements. The effective magnetic moments of these NPs exhibit an anomaloustemperature dependency, increasing from approximately 0.9 μB/atom at 15 K to1.9 μB/atom at 300 K. This is an increase by a factor of more than three comparedwith bulk Ni. On the basis of experiments involving X-ray absorption near-edgespectroscopy of the L3 edge for Pt and density functional theory calculations,the observed novel magnetism enhancement and its anomalous temperaturedependence are attributed to the electron transfer arising from the thermal-activation effects.Aixian Shan Chinping Chen Wei Zhang Daojian Cheng Xi Shen Richeng Yu Rongming Wang 2017Nano Research2017,10,9:1
6Hydrothermalmicroemulsion synthesis of stoichiometric single crystalhydroxyapatite nanorods with mono-dispersion and narrow-sizedistribution显示文摘Kaili Lin Jiang Chang Rongming Cheng Meiling Ruan 2007Materials Letters2007,61,:1
7Heat conduction enhanced shape-stabilized paraffin/HDPE PCMs by graphite addition: Preparation and thermal properties 显示文摘Cheng Wenlong Zhang Rongming Xie Kun 2010Solar Energy Materials and Solar Cells2010,94,10:1
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