2D inorganic nanosheet-based hybrid photocatalysts: Design, applications, and perspectives

Yun Kyung Jo, Jang Mee Lee, Suji Son, Seong Ju Hwang

Research output: Contribution to journalReview articlepeer-review

33 Citations (Scopus)

Abstract

Highly anisotropic 2D nanosheets of inorganic solids with nanometer-level thickness attract a great deal of research activity because of their unique merits in exploring novel high performance photocatalysts applicable for environmental purification and production of renewable clean energy. The 2D inorganic nanosheets possess many valuable properties such as tailorable band structures and chemical compositions, large surface areas, well-defined defect-free surface structure, and tunable electrical conductivities. Due to these unique advantages of 2D inorganic nanosheets, these materials can be used as promising building blocks for hybrid-type photocatalysts with optimized band structures, expanded surface areas, improved charge separation behaviors, and enhanced reaction kinetics. Of prime importance is that unusually strong electronic coupling can occur between very thin 2D inorganic nanosheets and hybridized nanospecies, leading to the synergistic optimization of electronic and optical properties, and thus the remarkable enhancement of photocatalytic activity. Depending on the type of component nanosheets, diverse examples of inorganic nanosheet-based photocatalysts are presented along with the in-depth discussion about critical roles of inorganic nanosheet in these hybrid photocatalysts. Future perspectives in the researches for 2D inorganic nanosheet-based photocatalysts are discussed to offer useful directions for designing and synthesizing novel high performance photocatalysts applicable for renewable energy production and environmental purification.

Original languageEnglish
Pages (from-to)150-190
Number of pages41
JournalJournal of Photochemistry and Photobiology C: Photochemistry Reviews
Volume40
DOIs
Publication statusPublished - 2019 Sep

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government (MSIP) (No. NRF-2017R1A2A1A17069463 ) and by the Korea government (MSIT) (No. NRF-2017R1A5A1015365 ). Yun Kyung Jo currently received her Ph.D. degree in inorganic chemistry from Ewha Womans University (Supervisor: prof. Seong-Ju Hwang). Her research focuses on the synthesis and characterization of porous nanoarchitectures including 2-dimensional inorganic nanosheets applicable for photocatalysts, gas adsorbents, and electrocatalysts. Jang Mee Lee received a B.S. degree in chemistry (2011) and a M.S. degree in inorganic chemistry (2013) from Ewha Womans University (Korea). She is supposed to finish her Ph. D. study under prof. Seong-Ju Hwang at the same university by the Feb. of 2018. Her research focuses on the synthesis and characterization of 2-dimensional inorganic nanosheet-based nanohybrid for diverse applications such as photocatalysis, Li-ion battery, and electrocatalysis. Especially, she is working on the in-situ XAS analysis to demonstrate the catalytic mechanism based on the local structure alteration of nano crystalline material. Suji Son is currently a MS student in the Department of Chemistry and Nanoscience at Ewha Womans University (Supervisor: prof. Seong-Ju Hwang). Her research interests include the design and application of nanostructured materials including 2D nanosheets for solar energy conversion. Seong-Ju Hwang received a B.S. degree in chemistry (1992) and a M.S. degree in inorganic chemistry (1994) from Seoul National University (Korea), a Ph.D. degree in inorganic chemistry from Universit? Bordeaux I (France) in 2001, and worked as a postdoc in Michigan State University (Supervisor: M. G. Kanatzidis). Prof. Hwang joined Department of Applied Chemistry at Konkuk University in 2002 and moved to Department of Chemistry & Nanoscience at Ewha Womans University in 2005. In 2014, he was designated as Ewha Fellow. Currently he is a director of “Center for Hybrid Interfacial Chemical Structure (SRC program funded by KRF)". His research focuses on the synthesis and characterization of low-dimensional nanostructured transition metal compounds applicable for energy production, energy storage, and environmental purification”.

Funding Information:
This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government (MSIP) (No. NRF-2017R1A2A1A17069463) and by the Korea government (MSIT) (No. NRF-2017R1A5A1015365).

Publisher Copyright:
© 2018 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Physical and Theoretical Chemistry
  • Organic Chemistry

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