通过溶胶-凝胶和溶剂热联合处理在二氧化铈中原位形成还原氧化石墨烯结构。
In situ formation of reduced graphene oxide structures in ceria by combined sol-gel and solvothermal processing.
作者信息
Yang Jingxia, Ofner Johannes, Lendl Bernhard, Schubert Ulrich
机构信息
Institute of Materials Chemistry, Vienna University of Technology, Getreidemarkt 9, 1060 Wien, Austria; permanent address: College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, LongTeng Road 333, 201620 Shanghai, P. R. China.
Institute of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9, 1060 Wien, Austria.
出版信息
Beilstein J Nanotechnol. 2016 Nov 23;7:1815-1821. doi: 10.3762/bjnano.7.174. eCollection 2016.
Raman and IR investigations indicated the presence of reduced graphene oxide (rGO)-like residues on ceria nanoparticles after solvothermal treatment in ethanol. The appearance of such structures is closely related to cerium -butoxide as precursor and ethanol as solvothermal solvent. The rGO-like residues improve the catalytic CO oxidation activity. This was also confirmed by introduction of "external" graphene oxide during sol-gel processing, by which the rGO structures and the catalytic activity were enhanced.
拉曼光谱和红外光谱研究表明，在乙醇中进行溶剂热处理后，二氧化铈纳米颗粒上存在类似还原氧化石墨烯（rGO）的残留物。这些结构的出现与作为前驱体的丁醇铈和作为溶剂热溶剂的乙醇密切相关。类似rGO的残留物提高了催化CO氧化活性。在溶胶-凝胶过程中引入“外部”氧化石墨烯也证实了这一点，通过这种方式，rGO结构和催化活性得到了增强。
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