Efficient Preparation and Characterization of Functional Graphene with Versatile Applicability

Graphene, as star versatile materials having extraordinarily high electric conductivity, electron mobility, thermal conductivity, thermal stability, optical transparency, and mechanical strength, has attracted much attention from scientists and engineers in the field of materials, chemistry, physics, energy, and environment in the last decade and achieved fruitful accomplishment. This review discusses preparation strategies, functionality, characterization, and applications for two dimensional nanosheet and quasi-one-dimensional nanoribbon of graphene through direct exfoliation of graphite, chemical vapor deposition of hydrocarbon, laser-induced direct synthesis of graphene, laser etched graphene oxide in the dry state without the use of toxic reducing agent hydrazine, unzipping carbon nanotube, and polycondensation of polycyclic aromatics on the basis of 178 representative references mostly in 2015. The stabilization of graphene oxide prepared in chemical preparation in "top-down" is emphasized. Several vital classic methods of characterizing molecular structure, C/O ratio, defect, morphology, single-or few-layered (2 to 10 layers) structure, porous and hollow structures, including Raman spectroscopy, AFM, SEM, TEM, STM, electron diffraction, X-ray diffraction, and X-ray photoelectron spectroscopy are systematically introduced. Because graphene possesses novel incomparable multifunctionalities, its versatile applications as novel conducting additives, reinforcing filler, separation membrane, sensor, anticorrosive coating, catalyst, electromagnetic shield, lubricant, and flexible electrode materials in electrochemical and electronic devices, including photovoltaic cells, supercapacitors, rechargeable batteries, sensors, field effect transistors, light emitting diodes, separation membranes, adsorbents and absorbents, catalysts, electro-optic modulator, terahertz emitter and detector, and semiconductors, have been mentioned.Especially in the aspect of both high performance and cost-effectiveness, graphene is expected to be even superior to the expensive carbon nanotubes.     

Effect of Nb on the Microstructure and Properties of Cold Rolled and Annealed Mo Microalloyed Bainitic Steel

Two kinds of low carbon bainitic steels,Nb-free Mo bearing and Nb + Mo addition steels,were cold rolled and annealed to investigate the effect of micro-alloying element Nb on the microstructure and properties of Mo microalloyed low carbon high strength bainitic steel. No precipitates were observed in Nb-free Mo bearing steel,whereas,two types of precipitates,i.e.,Nb( C,N) and composite( Nb,Mo)( C,N),were observed in the Nb + Mo microalloyed steel,resulting in precipitation strengthening. The strength of Mo bearing steel was improved by addition of Nb under the same annealing conditions. The grain size of Nb addition steel was almost the same as Nb-free steel. Unlike the obvious grain refinement and precipitation strengthening in hot rolling,the increase in yield strength of Nb addition steels in cold rolling and annealing mainly results from the precipitation strengthening,while the effect of grain refinement strengthening can be almost ignored.     

心理契约视角下高职院校“幸福校园”建设研究

从心理契约层面揭示了高职院校师生"幸福感"缺失的原因,探讨了心理契约在高职院校"幸福校园"建设中的作用机制,并有针对性地提出高职院校构建"幸福校园"的有效途径,如:构建政府与高职院校双主体互惠的心理契约模式;高职院校应积极开展幸福校园文化的探索;高职院校应构建师生心理契约动态管理与沟通模式;高职院校师生应构建自我心理契约与健康幸福观的反馈机制等。     

木棉纤维的性能及其在纺织上的应用

介绍了木棉纤维的形态结构、化学组成以及基本的物理和化学性能,并阐述了其在纺织领域中的最新应用现状。木棉纤维具有优良的抗菌性和保暖性,已成为服装好家用纺织品中首选的保暖填充材料,有较好的应用前景。     

应用型本科院校学报发展定位的探讨

应用型本科院校的转型发展及当前出版业的改革形势,使学报的现实处境更加严峻。通过对应用型本科院校学报发展定位的剖析,认为必须遵循应用性与学术性、内向性与开放性相结合的原则,对学报办刊的目标、类型和层次、服务对象及特色等重新进行科学、合理的定位,学报应以应用型本科院校教职工为主要对象,成为助推院校及地方发展的应用型本科学报。     

虚拟水理论发展及应用前景综述

自20世纪末虚拟水的概念提出以来,其基本理论、核算方法及案例研究在国内外得到了蓬勃发展,逐步建立了包含虚拟水含量、虚拟水贸易、虚拟水流动、虚拟水平衡、水足迹等概念的经济社会水资源管理理论框架,成为研究水资源在经济社会中循环演变的重要方法。系统地对虚拟水的概念及特点进行了解析,梳理了虚拟水理论的产生和发展历程,详细阐述了当前虚拟水研究进展,并对虚拟水理论在水资源管理中的应用前景进行了分析,提出了将其应用于农业水资源管理中的三大科学设想,为虚拟水理论的研究与应用提供参考。     

基于信息系统开发视角对数字化校园建设的研究

阐述了数字化校园建设的必要性,并从信息系统管理的角度分析了数字化校园建设的内涵和发展阶段,结合江苏商贸职业学院数字化建设现状,探讨数字化校园建设给信息技术类专业带来的机遇与挑战。     

高校校园绿地对降水径流污染削减研究

以安徽建筑大学南校区为例,研究合肥市校园绿地对自然降水水质净化以及自然降水对校内人工湖水质的影响。SS、COD、TN、TP等污染物指标数据显示:校园绿地对于污染物指标去除率分别为:47%、50%、16%、51%;其中在降水径流产生20min内去除效率最高,在120min后污染物指标含量变化趋于稳定。降雨前后校园人工湖的水质数据结果显示:降水后湖中SS、COD、TP浓度变大,TN浓度变化不大,由此可知,初期降水的污染物是造成水体非点源污染重要因素。     

纳米银涂覆织物研究进展

纳米银涂覆织物具有导电、抗菌、抗紫外、电磁屏蔽、拒水等性能。将纳米银制备到纺织品上赋予纺织品功能性及装饰性近年来受到了越来越多的关注,综述了纳米银涂覆织物的制备方法及对织物的前处理方法,并介绍了纳米银涂覆织物的性能及应用。     

BAF与EMBAF工艺处理校园生活污水的对比研究

在同等工况条件下对比研究了曝气生物滤池(BAF)和生物菌剂强化曝气生物滤池(EMBAF)两种工艺对校园生活污水主要指标的处理效果.结果表明:EMBAF对校园生活污水中化学需氧量(COD)、氨氮(NH+4-N)的平均去除率达到90.7%和81.6%,较BAF分别提高13.4%、15.7%,并能稳定出水中磷(TP)的总含量.