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K S Divy Athulya K Madhu T U Umadevi T Suprabh P. Radhakrishnan Nair Suresh Mathew 《半导体学报》2017,38(6):063002-8
In this paper an improvement in the photocatalytic performance of TiO2 was carried out via hybridizing with graphene. Graphene-TiO2 (GR-TiO2)nanocomposites with different weight addition ratios of graphene oxide (GO) have been prepared via a facile microwave irradiation of GO and tetrabutyl titanate in isopropyl alcohol. Raman spectroscopy (RS), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-visible spectroscopy (UV-vis), Fourier transform infrared spectra (FTIR), energy dispersive X-ray spectroscopy (EDX) and photoluminescence spectra (PL) are employed to determine the properties of the samples. Microwave irradiation can heat the reactant to a higher temperature in a short time, simultaneously GO is reduced to graphene and TiO2 nanoparticles grown on the surface of GR. GR-TiO2 nanocomposites synthesized via this approach have efficient electron conductivity in GR, resulting in a reduced electron-hole recombination rate. Among the synthesized nanocomposites, GT-8wt% exhibited the best photocatalytic activity toward photocatalytic degradation of MB. Our current work provides a new insight for the fabrication of GR-TiO2 nanocomposites within a short reaction time and also explains the mechanism of photocatalysis employing radical and hole scavengers. 相似文献
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近年来,中国与阿位伯国家贸易总体保持高速发展势头。2004～2014年,中国对阿盟进出口额年均增长率为28.3%。同时,阿拉伯国家出于保障国家安全,保证食品安全等目的,频频制定技术性贸易措施,出台了大量的技术法规和标准,以及密集调整检验检测及认证认可等合格评定程序。这些政策对我国向阿出口产生了巨大的影响,我们需要更加关注阿拉伯国家发布的通报信息,做好出口前的准备工作。 相似文献
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技术性贸易壁垒成为阻碍我国出口的主要因素,建立高效的预警预测系统已经势在必行。结合MultiAgent和Ontology技术,在JADE开发平台的基础上,给出了系统的详细设计方案和实现的关键技术。 相似文献
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随着国际贸易的发展,技术性贸易壁垒已成为WTO体制下推行贸易保护的最有效的方法之一．析了欧盟、美国、日本等发达国家实施的技术性贸易壁垒对我国出口的影响,并以美国为例对两者间的关系进行了实证分析,然后分析了这种影响产生的原因,最后提出了一些应对技术性贸易壁垒的措施． 相似文献