Fine Tuning the Heterostructured Interfaces by Topological Transformation of Layered Double Hydroxide Nanosheets
Fine Tuning the Heterostructured Interfaces by Topological Transformation of Layered Double Hydroxide Nanosheets
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DOI：
10.1021/acs.iecr.8b02246
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发表时间：
2018-07
影响因子：
4.2
通讯作者：
Yanqi Xu;Zelin Wang;Ling Tan;Yufei Zhao;Haohong Duan;Yu‐Fei Song
中科院分区：
文献类型：
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作者：
Yanqi Xu;Zelin Wang;Ling Tan;Yufei Zhao;Haohong Duan;Yu‐Fei Song
合理设计具有丰富界面的高活性、稳定性和廉价的催化剂对提高催化性能具有巨大潜力。层状双氢氧化物（LDHs）向相应的混合金属氧化物（MMO）的拓扑转化提供了实现这种界面的有效策略。然而，这些异质结构界面的形成和转换缺乏研究，仍然难以捉摸。在这里，我们报告了详细的调查的LDHs的拓扑变换。ZnCo-LDH在不同温度下的煅烧可以调节所制备的具有丰富界面的MMO。其中，200 °C焙烧的ZnCo-LDH具有最丰富的界面，在电化学水氧化中表现出优异的性能。这一工作将从分子水平上加深对LDH拓扑变换的理解。
Rational design of highly active, stable, and inexpensive catalysts with abundant interfaces can have great potential to increase catalytic performance. Topological transformation of layered double hydroxides (LDHs) to the corresponding mixed metal oxides (MMOs) offers an efficient strategy to achieve such interfaces. However, the formation and conversion of these heterostructured interfaces is lacking in study and remains elusive. Herein, we report a detailed investigation of the topological transformation of LDHs. The as-prepared MMO with abundant interfaces can be modulated by calcination of ZnCo-LDH at different temperatures. Among them, the ZnCo-LDH calcinated at 200 °C reveals the most abundant interfaces and exhibits excellent performance in electrochemical water oxidation. This work will deepen the understanding of the LDH topological transformation from the molecular level.