【摘 要】
：
Micro-size oil adsorbents are effective for the rapid reme-diation of special oil spills.Here,N-doped reduced gra-phene oxide(RGO)microspheres(ca.150 μm in diameter)with a local radially aligned and porous structure are fabricated by combining electrospra
【机 构】
：
Beijing Key Laboratory of Advanced Functional Polymer Composites,College of Materials Science and En
论文部分内容阅读
Micro-size oil adsorbents are effective for the rapid reme-diation of special oil spills.Here,N-doped reduced gra-phene oxide(RGO)microspheres(ca.150 μm in diameter)with a local radially aligned and porous structure are fabricated by combining electrospray-freeze-drying with thermal treatment for rapid separation of oil-water.Owing to its hydrophobic/oleophilic properties and oriented structure,the N-doped RGO microspheres achieve high capacities and fast adsorption rates for a variety of oils and organic solvents.Furthermore,excellent oil-water separation performance on floating oil/oil-water emulsions and stable cyclic ad-sorption capacities are obtained for the local radially aligned and porous microsphere.Therefore,N-doped RGO microspheres with the unique porous structure have the potential for the remediation of oily sewage and oil spills.
其他文献
本文针对燃料预着火问题,对文献预着火实验和理论做了梳理,对比激波管中典型NTC燃料DME在不同当量比下着火实验数据.从燃料基础化学特性着手,结合着火延迟期温度微扰动敏感性、热耗散特征以及反应时间尺度特征进行预着火过程理论分析,明晰了温度微扰动敏感性和反应时间尺度特征是预着火发生的主导性因素.研究发现,DME和正庚烷在稀当量比、低压、低燃料浓度时更容易发生预着火.为判断和解析其它燃料预着火现象发生条件和发生机制提供理论参考.
通过分析“实践十号”卫星长时间微重力下单颗粒煤燃烧实验的彩色和红外图像,获得了单颗煤粒在各向同性燃烧条件下周围碳烟辐射强度分布,同时使用瞬态燃烧模型对实验进行模拟,进一步揭示了煤颗粒周围的碳烟浓度分布规律及其控制因素.实验和模型研究表明,2 mm煤颗粒在(1.5～7)r0处存在碳烟.挥发分燃烧中期,当氧气质量分数低于8％且气体温度高于1400 K时,颗粒周围的碳烟辐射强度和体积分数沿径向均呈双峰分布,而常重力下实验受自然对流影响呈现单峰分布.
Functional nanofibrous membranes fabricated by electrospin-ning technology have attracted much attention in the removal of heavy metal ions from contaminated wastewater.The high specific surface area,high porosity and ease of functionality create an enhan
The alum-borneol nanoemulsion(ABN),which combines the mineral medicine alum and the botanical medicine borneol,has been applied for approximately 40 years in the clinical treatment of burns,scalds,radiation dermatitis and shingles,and has a good curative
The host-guest interactions between cyclopentanocucurbit-[6]uril(CyP6Q[6])as host and six alkyl imidazolium hydrochlo-ride as guests(g1,g2,g3,g4,g5,and g6)have been studied by various techniques,such as 1H NMR spectroscopy,isothermal titration calorimetry
Electrospinning with a simple and controllable process has ex-tremely received considerable concerns by virtue of the fab-rication and development of nanofibers.Moreover,nano-fibers are playing an increasing impact on energy conversion and storage devices
Antibacterial wound dressing can benefit the wound healing by preventing bacterial infection,especially for the electro-spun ones due to their porous structures and easily loading antibacterial drugs.However,it is challenging to apply the antibac-terial e
To reduce the cost of manufacture,it is urgent to develop effi-cient and stable platinum(Pt)-free counter electrode(CEs)electrocatalysts for dye-sensitized solar cells(DSSCs).In this study,a simple electrospinning and carbonization strategy has been devel
The research of photo-responsive materials,with changed ab-sorption and emission under light stimulus,has drawn more and more attention due to their wide applications.However,most of them suffered from the notorious aggregation-caused quenching(ACQ)effect
Low water vapor and air permeability is a persistent challengein wearable and on-skin electronics,as it reduces wearing comfort,and leads to skin irritation and inflammation in the long term.To tackle this issue,Zheng and coworkers designed a stretchable