A review on fabricating heterostructures from layered double hydroxides for enhanced photocatalytic activities†,Catalysis Science & Technology

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A review on fabricating heterostructures from layered double hydroxides for enhanced photocatalytic activities†
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2018-01-19 00:00:00 , DOI: 10.1039/c7cy02314f
M. J. Wu _{1,

2,

3,

4,

5} , J. Z. Wu _{1,

2,

3,

4,

5} , J. Zhang _{1,

2,

3,

4,

5} , H. Chen _{1,

2,

3,

4,

5} , J. Z. Zhou _{1,

2,

3,

4,

5} , G. R. Qian _{1,

2,

3,

4,

5} , Z. P. Xu _{6,

7,

8,

9,

10} , Z. Du _{5,

11,

12} , Q. L. Rao _{5,

11,

12}

Affiliation

There is growing interest in photocatalytic applications of layered double hydroxides (LDHs) because of their unique two-dimensional (2D) lamellar structural features and optical properties. This review initially reveals that adjustable components of LDHs control their electronic structures. On the basis of this characteristic, LDHs have emerged as very promising candidates for constructing highly efficient photocatalysts. As a result, 2D LDH-containing heterostructures were prepared according to two strategies: one generated the desired structural configurations, including horizontally and vertically stacked hierarchical heterostructures, and the other comprised band gap engineering with staggered-gap heterojunctions. The heterojunctions that were obtained displayed enhanced photocatalytic activities because of the facilitated transfer of photogenerated carriers and their prolonged lifetime and extended light-response range. Thus, LDH-containing heterostructures exhibited better photocatalytic effects than their individual components in the same applications. Finally, this review provides a brief perspective on the future of the fabrication of LDH-containing heterostructures.

中文翻译：

由层状双氢氧化物制备异质结构以增强光催化活性的评论†

由于层状双氢氧化物（LDH）的独特的二维（2D）层状结构特征和光学性质，对光催化应用的兴趣日益浓厚。这篇评论最初揭示了LDH的可调节成分控制着它们的电子结构。基于该特征，LDH已经成为构建高效光催化剂的非常有前途的候选者。结果，根据两种策略制备了含二维LDH的异质结构：一种生成所需的结构构型，包括水平和垂直堆叠的分层异质结构，另一种包含具有交错间隙异质结的带隙工程。所获得的异质结显示出增强的光催化活性，这是因为光生载流子的转移变得容易，并且它们的寿命更长，光响应范围更广。因此，在相同的应用中，含有LDH的异质结构比其单独的组分表现出更好的光催化作用。最后，本篇综述简要介绍了含有LDH的异质结构的未来制造。

更新日期：2018-01-19

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