A Generalized Strategy for the Synthesis of Large-Size Ultrathin Two-Dimensional Metal Oxide Nanosheets.
A Generalized Strategy for the Synthesis of Large-Size Ultrathin Two-Dimensional Metal Oxide Nanosheets.
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DOI：
10.1002/anie.201703871
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发表时间：
2017-07
影响因子：
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通讯作者：
Hewei Zhao;Yujie Zhu;Fengshi Li;Rui Hao;Shaoxiong Wang;Lin Guo
中科院分区：
文献类型：
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作者：
Hewei Zhao;Yujie Zhu;Fengshi Li;Rui Hao;Shaoxiong Wang;Lin Guo
二维（2D）纳米材料由于其超高的表面体积比和量子约束效应而表现出独特的电学、力学和催化性能。然而，如何通过一种通用而简便的方法简单地合成二维金属氧化物纳米片仍然是一个很大的挑战。在此，我们报告了一种在湿化学系统中使用氧化石墨烯（GO）作为模板来合成大尺寸超薄2D金属氧化物纳米片的通用且简便的策略。值得注意的是，这种新策略主要依赖于精确控制氧化石墨烯表面金属氧化物的非均相生长和成核之间的平衡，而这种平衡与金属元素的个体特征无关。因此，可以大尺寸合成各种金属氧化物的超薄纳米片，包括主族元素和过渡元素。超薄的二维金属氧化物纳米片具有可控的厚度和独特的表面化学状态。
Two-dimensional (2D) nanomaterials show unique electrical, mechanical, and catalytic performance owing to their ultrahigh surface-to-volume ratio and quantum confinement effects. However, ways to simply synthesize 2D metal oxide nanosheets through a general and facile method is still a big challenge. Herein, we report a generalized and facile strategy to synthesize large-size ultrathin 2D metal oxide nanosheets by using graphene oxide (GO) as a template in a wet-chemical system. Notably, the novel strategy mainly relies on accurately controlling the balance between heterogeneous growth and nucleation of metal oxides on the surface of GO, which is independent on the individual character of the metal elements. Therefore, ultrathin nanosheets of various metal oxides, including those from both main-group and transition elements, can be synthesized with large size. The ultrathin 2D metal oxide nanosheets also show controllable thickness and unique surface chemical state.