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Solvent-free synthesis of carboxylate-functionalized cellulose from waste cotton fabrics for the removal of cationic dyes from aqueous solutions

Dong TianXinxing ZhangCanhui Lu、Guiping YuanWei、ZhangZehang Zhou2014-01-01OpenAlex

In this work, the carboxylate-functionalized cellulose (CFC) from waste cotton fabrics (WCF) was studied for removal of cationic dyes from aqueous solutions. Instead of using conventional process for esterifying cellulose, which uses sulfuric or perchloric acid as catalysts, and methylene chloride as solvent, a novel…

Adsorption and biosorption for pollutant removalAdvanced Cellulose Research StudiesNanomaterials for catalytic reactions

Gold nanoparticles-decorated single silver nanowire as an efficient SERS-active substrate

谭恩忠2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

散布的新奇提高表面的拉曼(重量的单位) 活跃底层基于 Au nanoparticles (AuNPs ) ,涂的银 nanowire (AgNW ) 被一个有效、简单的方法获得。混合结构由这个方法准备了的结果表演是为孔雀石绿色(MG ) 的察觉的强大的重量的单位活跃的底层有 1 nmol/L 的限制的分子。优秀提高能力主要来自二种热点。一个人从在邻近的 AuNPs 之中的差距,并且其它是在 AuNPs 和 AgNW 之间的地区的存在。特别地, AuNPs 涂的 AgNW 能由于 AgNW 活动范围微米的长度通过共焦的拉曼分光计的目的被看,它能改进察觉的重覆性。而且,大意义大意义。

Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesNanocluster Synthesis and Applications

Applications of thermal stepwise reactions on the co-gasification of coal and tobacco stems

Qiang LiuYongsheng、ZhangZhao Liu2014-01-01OpenAlex

The objective of this study was to better under- stand the gasification mechanisms between tobacco stems and coal in a carbon dioxide atmosphere. Shenhua bitumi- nous coal with Chinese tobacco stems were studied using the SDT-MS-FTIR technique, to elicit information from the thermal decomposition curves coupled with t…

Thermochemical Biomass Conversion ProcessesThermal and Kinetic AnalysisSubcritical and Supercritical Water Processes

Experimental study of cetane number on methanol/biodiesel emission of pollutant

LI Rui-n2014-01-01China Environmental Science

The engine bench test was carried out on 186F diesel engine fuelled with methanol/biodiesel blend. The cetane number of the blend was 46, 50 and 55. The emission pollutants and fuel consumption of the engine fuelled with methanol/biodiesel was measured to investigate the effect of cetane number on pollutant and econom…

Advanced Combustion Engine TechnologiesCatalytic Processes in Materials ScienceVehicle emissions and performance

Mechanistic study of substrate-based galvanic replacement reactions

Kyle、Gilroy、Aarthi 等 10 位作者2014-01-01纳米研究:英文版

在流电的代替反应使用的牺牲的模板支配形成的空金属 nanostructures 的性质。这里,我们证明有极端地改变的性质的那基于底层的 Au-Ag nanoshells 被获得由仅仅有在他们进反应容器的插入以前的黄金的 ultrathin 层的涂层银模板。这样形成的 nanoshells 展览光滑得多的表面, crystallinity 的更高的度并且是更加柔韧的。Dealloying nanoshells 导致基于底层的 nanocages 的第一示范。如此的笼子在相应于的方向展出几何洞的一个明确的模式 { 111 } 开始的模板材料的方面。通过调整设计笼子几何学到在开始的模板和内在的底层的水晶结构之间的 orientation…

Supercapacitor Materials and FabricationCopper-based nanomaterials and applicationsNanoporous metals and alloys

Influence of cryogenic treatment on the wear characteristics of 100Cr6 bearing steel

Sri、Siva、Mohan 等 8 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

一系列互给穿测试被执行在上低温实验法地深对待并且忍受钢学习 wear 抵抗的 100Cr6 的通常对待热的样品。象 wear 碎片一样的穿的表面被扫描电子显微镜学分析。改进在从 49% ~ 52% 穿深低温实验法地对待的样品范围的抵抗。这重要改进在穿抵抗能在 tempered martensitic 矩阵和保留的奥氏体的转变被归因于更好的碳化物降水进马氏体。X 光检查衍射分析证明在通常对待热的样品的保留的奥氏体的体积部分是 14% ,深低温实验法地对待的样品的仅仅是 3% 。

Mechanical stress and fatigue analysisTribology and Wear AnalysisMetal Alloys Wear and Properties

Effect of deformation temperature on transformation-induced plasticity effect of lean duplex stainless steel

Wei Zhang2014-01-01宝钢技术研究:英文版

Effects of deformation temperature on the mechanical properties and microstructure of lean duplex stainless steels B2102 and $32101 have been investigated.It was found that the strength decreased continuously with increases in temperature from-60 ℃ to 100 ℃.The strength of $32101 was higher than that of B2102 owing to…

Microstructure and mechanical propertiesMicrostructure and Mechanical Properties of SteelsHydrogen embrittlement and corrosion behaviors in metals

Memory effect of reversibly thermoswitchable self-assembly- competent recombinant TMV coat protein with multi-binding moieties with potential applications in nanoparticle purification

Lei SongHaina WangShiwen Wang、Hua ZhangHaolong、CongPo Tien2014-01-01OpenAlex

Biomolecule-mediated assembly of novel nano- conjugates has been subjected to numerous investigations nowadays, which provides a new insight into the material science and engineering. Via the molecular biology technol- ogy, the genetically engineered polypeptide for inorganics (GEPI) can be designed as a molecular bin…

Bacteriophages and microbial interactionsDiatoms and Algae ResearchPolar Research and Ecology

Three-dimensional porous graphene sponges assembled with the combination of surfactant and freeze-drying

Rujing、Zhang、Yachang 等 20 位作者2014-01-01纳米研究:英文版

与表面活化剂和 freeze-drying 的联合,我们开发了二种 graphene 多孔的结构。在一方面,把肥皂水泡的泡沫用作模板,有富有的层次毛孔的三维的多孔的 graphene 海绵被综合了。材料的毛孔包含长度规模的三个层次,包括毫米,测微计和纳米。结构能被改变结冰媒介调节,调整激动人心的率或增加功能的添加剂。由 graphene 氧化物 / 表面活化剂暂停的直接 freeze-drying,在另一方面,有方向性地排列的毛孔的一个多孔的框架被准备。表面活化剂给 graphene 氧化物表的更好的分散,导致一个高特定的表面区域。两个获得的材料展出优秀吸收能力和好压缩性能,提供大量可能的应用程序,例如吸收剂,存储媒介,和搬运人。

Graphene research and applicationsSupercapacitor Materials and FabricationGraphene and Nanomaterials Applications

纺粘非织造用聚乳酸/聚(3-羟基丁酸-co-3-羟基戊酸共聚酯)的可纺性

丁新波、韩建、朱斐超 等 4 位作者2014-01-01纺织学报

为获得高质量的聚乳酸/聚(3-羟基丁酸-co-3-羟基戊酸共聚酯)(PLA/PHBV)双组分生物降解纺粘非织造材料,对PLA/PHBV母粒的相对分子质量及分布、熔体指数、热力学、结晶和流变性能进行了研究,并对PLA/PHBV纺粘纤维的热力学和结晶性能进行了探讨.结果表明:PLA/PHBV母粒重均分子质量约为120 000,分布指数为1.99;热失重起始热分解温度为285℃,适宜纺粘非织造挤出加工,合适的纺粘加工温度约为210℃.PLA/PHBV熔体在剪切速率小于1 000 rad/s时,表观黏度对剪切速率变化敏感;熔体对温度的敏感程度随着剪切速率的增大而降低.纺粘加工工艺对PLA/PHBV原料的热力学和结晶性能影响显著.与PLA/…

biodegradable polymer synthesis and propertiesCollagen: Extraction and CharacterizationBiopolymer Synthesis and Applications

Analysis of transcriptomes of three orb-web spider species reveals gene profiles involved in silk and toxin

Yingjun、Zhao、Yan 等 10 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

作为有 390million 年的历史的一个古老的节肢动物,蜘蛛发展了源于改编到不同环境的众多的词法形式。蜘蛛的毒液和丝绸,在农业,药和工程领域有有希望的商业应用,具有到研究人员的特殊兴趣。然而,很少对他们的 genomic 部件被知道,它妨碍不仅理解蜘蛛生物学而且利用他们的珍贵基因。这里,我们报导在上深定序, de novo 装配了在华南的热带森林里分布式的三环网蜘蛛种, Gasteracantha arcuata, Nasoonaria sinensis 和 Gasteracantha hasselti 的 transcriptomes。分别地,与 Illumina 对结束 RNA-seq 技术, 54 871, 101 85…

RNA and protein synthesis mechanismsSilk-based biomaterials and applicationsMolecular Biology Techniques and Applications

Effect of Hydrophobic Modification on the Durability and Environmental Properties of Porous MgF_2 Antireflective Films

Liang-Hong、Yan、Liu 等 9 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

大音阶的第五音。电影性质上的甲基硅酮比例的效果被检验以便控制这些电影的 wettability,山峰发射度,和环境耐久性。甲基硅酮的修正能增加电影 hydrophobicity,因此减少水的吸附,并且改进环境耐久性。然而,大量甲基硅酮能增加这部电影折射索引,在 BK7 玻璃上为电影在山峰发射度导致减少。有 40% 硅酮表演水的电影联系 110 敢椠 ? 的角度 ? 潣摬猠敷吗?

Surface Modification and SuperhydrophobicityAerogels and thermal insulation

Promotional effect of CO pretreatment on CuO/CeO_2 catalyst for catalytic reduction of NO by CO

GU Xianru2014-01-01OpenAlex

The CuO/CeO2 catalysts were investigated by means of X-ray diffraction(XRD),laser Raman spectroscopy(LRS),X-ray photoelectronic spectroscopy(XPS),temperature-programmed reduction(TPR),in situ Fourier transform infrared spectroscopy(FTIR) and NO+CO reaction.The results revealed that the low temperature(150 °C) catalyti…

Catalytic Processes in Materials ScienceGas Sensing Nanomaterials and SensorsCopper-based nanomaterials and applications

铀酰杂化超分子化合物的合成、结构、电化学、荧光及光催化性质(英文)

何福兰、王 娟、李子颖 等 6 位作者2014-01-01OpenAlex

合成了2,9-二甲基-1,10-邻菲罗啉的铀(Ⅵ)超分子杂化配合物[UO2Cl4]2[dmphenH2]2·3H2O(1),并进行了IR、UV、XPS和X单晶衍射分析。 铀的杂化配合物呈六配位的变形八面体结构,属单斜晶系,Cc空间群;晶胞参数分别为:a=1.7043(2) nm,b=0.8809(13) nm,c=2.7492(10) nm,α=90°,β=94.493(2)°,γ=90°,Z=4,V=4.1149(8) nm3。 氢键和π…π相互作用大大加强了配合物的稳定性。 配位导致紫外光谱的最大吸收峰发生红移。 荧光光谱显示,配合物在407 nm的光激发下可发射506.6 nm绿色荧光。 电化学研究表明,该配合物具有一对可逆…

Radioactive element chemistry and processingNuclear Materials and PropertiesLanthanide and Transition Metal Complexes

Impedance and ferroelectric properties of Sr2+modified PZT-PMN ceramics

ARVIND ARVIND、Kumar、Mishra Mishra2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

Sr2+ modified polycrystalline PZT-PMN ceramics were synthesized by a semi-wet route. Impedance spectroscopy studies indicate the bulk and grain boundary effects of PZT-PMN material along with the negative temperature coefficient of resistance. The bulk conductivity exhibits an Arrhenius-type thermally activated hoppin…

Ferroelectric and Piezoelectric MaterialsShape Memory Alloy TransformationsAeroelasticity and Vibration Control

Photocatalytic Activity and Optoelectronic Property of Porphyrin Tin-Sensitized TiO_2 Nanotubes

Chen Huang2014-01-01Wuji huaxue xuebao

TiO2 nanotubes sensitized with trans-dihydroxo[5,10,15,10-tetraphenyl porphyrin] tin(Ⅳ)(abbreviated to SnTPP) were prepared.The photocatalytic activity of SnTPP-sensitized TiO2 nanotubes were evaluated by using pnitrophenol as a model contaminant under visible light irradiation.Meanwhile,SnTPP-sensitized TiO2 nanopart…

TiO2 Photocatalysis and Solar CellsAdvanced Nanomaterials in Catalysis

The electrochemical hydrogen storage characteristics of as-spun nanocrystalline and amorphous Mg20Ni10-xMx(M=Cu, Co, Mn;x=0–4) alloys

Yanghuan、Zhang、Tai Tai 等 11 位作者2014-01-01稀有金属:英文版

20 Ni 10x M x ( M=Cu ,公司, Mn ;x ?=? 04 ) 合金准备了由融化旋转。同样旋转(M=None, Cu ) ,合金显示全部 nanocrystalline 结构同样旋转(M=Co, Mn ) 合金保持 nanocrystalline 的混合结构并且非结晶什么时候 x ?=? 4 (M 内容) 。这些结果显示 M 的替换(M=Co, Mn ) 因为 Ni 在 Mg 便于玻璃形成 2 Ni 类型合金。所有同样旋转的合金有 Mg 2 Ni 主要阶段,而是 M ( M=Co , Mn )替换导致一些第二等的阶段,例如 MgCo 为 M=Co 的 2 个, Mg 阶段,和 MnNi ,为 M=Mn 的 Mg…

Magnesium Alloys: Properties and ApplicationsHydrogen Storage and MaterialsAmmonia Synthesis and Nitrogen Reduction

Nanocrystalline Growth Activation Energy of Zirconia Polymorphs Synthesized by Mechanochemical Technique

Taghi、Dallali、Isfahani 等 12 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

The synthesis of ZrO2 by mechanochemical reaction using ZrCI4 and CaO as raw materials and subsequent annealing of the products were investigated.The effect of thermal treatment on the structural evolution and morphological characteristics of the nanopowders was studied by X-ray diffractometry,Raman spectroscopy,trans…

Ferroelectric and Piezoelectric MaterialsCatalytic Processes in Materials ScienceCatalysis and Oxidation Reactions

In situ measured growth rates of bainite plates in an Fe-C-Mn-Si superbainitic steel

ZHANGWei、Hu、Guang 等 9 位作者2014-01-01Acta Scientiarum Naturalium Universitatis Sunyatseni

在 Fe-C-Mn-Si superbainitic 钢的 bainite 盘子的生长率被调查由在 situ 观察。铁酸盐 bainite 的变长的率在冷却和等温的成立过程期间被观察,生长在谷物边界起核心作用的 bainite 盘子评价,在谷物以内并且在 preformed bainite 上被测量。变长在冷却期间 bainite 盘子评价,这被显示,等温的过程是不同的,并且生长在地点的不同类型起核心作用的 bainite 盘子评价,这也表明了差异。在冷却期间在谷物边界开始的 bainite 盘子变得最快,当在 preformed bainite 上起核心作用的盘子做了时最慢。然而,在等温的转变期间在谷物边界起核心作用的 bain…

Microstructure and Mechanical Properties of SteelsMetallurgy and Material FormingMagnetic Properties and Applications

Shrinking and Light Diffraction of the Self-Organized Polystyrene-block-Polybutadiene Microporous Film Deposited on a Stretched Polymer Film by Thermal Contraction

Jia Ruoku2014-01-01Chinese Journal of Applied Chemistry

Polystyrene-block-polybutadiene( PS-b-PB) microporous polymer honeycomb films with hexagonal pores were prepared by solvent evaporating self-organization under humid conditions( polystyrene-blockpolybutadiene,referred to as: PS-b-PB,the same below). The PS-b-PB honeycomb films were shrunk twice by using polythene shri…

Polymer composites and self-healingTransition Metal Oxide NanomaterialsPolydiacetylene-based materials and applications