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A review on fabricating heterostructures from layered double hydroxides for enhanced photocatalytic activities

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Abstract

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.

Graphical abstract: A review on fabricating heterostructures from layered double hydroxides for enhanced photocatalytic activities

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Publication details

The article was received on 12 Nov 2017, accepted on 19 Jan 2018 and first published on 19 Jan 2018


Article type: Minireview
DOI: 10.1039/C7CY02314F
Citation: Catal. Sci. Technol., 2018, Advance Article
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    A review on fabricating heterostructures from layered double hydroxides for enhanced photocatalytic activities

    M. J. Wu, J. Z. Wu, J. Zhang, H. Chen, J. Z. Zhou, G. R. Qian, Z. P. Xu, Z. Du and Q. L. Rao, Catal. Sci. Technol., 2018, Advance Article , DOI: 10.1039/C7CY02314F

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