New strategies for 1D materials fabrication are of fundamental importance in the advancement of science and technology. Instead of small organic amines molecule-and the polymer-directed agent, here, we report a unified graphene-oxide-directed agent to the synthesis of a series of nanoribbons with different chemistries and with low dispersity, including V 2 O 5 , AgVO 3 and Sr(VO 3 ) 2 . This strategy is based on a general linear growth of vanadate and splitting mechanism of graphene oxide during the synthesis. We believe our methodology provides a simple and convenient route to a variety of nanoribbon building blocks for assembling materials with novel structure and function in nanotechnology. More importance is that graphene is in the middle of composite structure, while supporting the main structure it does not affect the mass transfer process. Compared to other composite structures based on graphene, such as graphene scroll and graphene sheet, graphene ribbon is more suitable for lithium-ion battery.
INTRODUCTIONThe nanoribbons are important for certain devices because they provide, for example, ultrahigh aspect ratios which is extremely sensitive to surface-adsorbed species for chemical sensing and geometries with high carriers that could efficiently fill the channel regions of transistors. 1, 2 Currently, Major efforts have been placed on methodology development for nanoribbon synthesis, assembly and property elucidation. However, the bulk of previous studies is limited to simple Si, Ge and binary semiconductor, with only a few recent investigations into complex system such as, superlattice nanoribbons and ternary compounds. [3][4][5] Although studies of ternary nanoribbons, in comparison with binary ones, are relatively more meaningful because the ternary nanoribbons exhibit not only more complex functions but also properties that are readily tunable by changing the component element, 6 a significant bottleneck in the field is the lack of a general approach to the synthesis of nanoribbon building blocks composed of complex functional materials (e.g., ternary and even quaternary systems). This is mainly due to the traditional methods such as chemical vapor deposition and etching which are applicable to the synthesis of binary compounds are not suitable for that of ternary compounds. 7, 8 Grow techniques related to the well-developed solvothermal and hydrothermal synthetic approaches used for nanoribbons have been adapted and applied with some success to produce ZnGeO 4 nanoribbon. 9 Nevertheless, a widely employed hydrothermal route for synthesizing nanobelts is the use of templates, surfactants or structure-directing agent, including a variety of small organic amines molecules and the polymers. 9, 10 Moreover, formally in order to make less affection on the properties, the sample has to be washed or calcined for eradicating the structure-directing agents. Furthermore, there is no structure-directing agent suitable for the synthesis of a series of nanoribbons.