在氧化石墨烯片上原位生长金纳米晶体。

In situ growth of Au nanocrystals on graphene oxide sheets.

机构信息

College of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.

出版信息

Nanoscale. 2014;6(3):1281-5. doi: 10.1039/c3nr04714h.

Abstract

Au nanocrystals (AuNCs) with a size of 10-20 nm decorated on graphene oxide (GO) were fabricated successfully through a hydrothermal reduction and crystallization route without any extra reductants and capping agents. The hydrophobic areas of GO benefit the formation of nanocrystals (NCs) with {111} facets totally exposed; however, the hydrophilic areas are detrimental to the crystallization. The morphology of AuNCs could be tailored by the degree of oxidation on the GO surface. The shape-controllable and reducing properties of GO are in favor of "clean" synthesis of noble metal NCs decorated on graphene.

摘要

金纳米晶（AuNCs）成功地通过水热还原和结晶路线在氧化石墨烯（GO）上进行了修饰，其中不使用任何额外的还原剂和封端剂。GO 的疏水区有利于完全暴露的{111}面纳米晶（NCs）的形成，而亲水区则不利于结晶。AuNCs 的形态可以通过 GO 表面的氧化程度来调节。GO 的形状可控性和还原性能有利于在石墨烯上“清洁”合成贵金属 NCs。