Volume 20, Issue 18 2470138
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Maximizing Photoelectrochemical Performance in Metal-Oxide Hybrid Composites via Amorphous Exsolution—A New Exsolution Mechanism for Heterogeneous Catalysis (Small 18/2024)

Myeong-Jin Kim

Myeong-Jin Kim

School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005 Soth Korea

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Mostafa Afifi Hassan

Mostafa Afifi Hassan

School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005 Soth Korea

Department of Physics, Faculty of Science, New Valley University, El- Kharja, 72511 Egypt

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Changhoon Lee

Changhoon Lee

Max Planck POSTECH Center for Complex Phase of Materials, Pohang University of Science and Technology, Pohang, 37673 South Korea

Division of Advanced Materials Science, Pohang University of Science and Technology, Pohang, 37673 South Korea

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Wan-Gil Jung

Wan-Gil Jung

Korea Basic Science Institute, Gwangju, 61186 South Korea

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Hyojung Bae

Hyojung Bae

Korea Photonics Technology Institute (KOPTI), Cheomdanbencheo-ro 108 beon-gil 9, Buk-gu, Gwangju, 61007 South Korea

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SungHyun Jeon

SungHyun Jeon

Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141 South Korea

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WooChul Jung

WooChul Jung

Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141 South Korea

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Jun-Seok Ha

Jun-Seok Ha

School of Chemical Engineering, Chonnam National University, Gwangju, 61186 South Korea

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Ji Hoon Shim

Ji Hoon Shim

Division of Advanced Materials Science, Pohang University of Science and Technology, Pohang, 37673 South Korea

Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 790-784 South Korea

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Jae-Hoon Park

Jae-Hoon Park

Max Planck POSTECH Center for Complex Phase of Materials, Pohang University of Science and Technology, Pohang, 37673 South Korea

Department of Physics, Pohang University of Science and Technology, Pohang, 37673 South Korea

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Sang-Wan Ryu

Sang-Wan Ryu

Department of Physics, Chonnam National University, Gwangju, 61186 South Korea

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Bong-Joong Kim

Bong-Joong Kim

School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005 Soth Korea

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First published: 02 May 2024

Graphical Abstract

Heterogeneous Catalysis

In article number 2308934, Bong-Joong Kim and co-workers devise a method to exsolve metal dopants from amorphous perovskite oxides, followed by the crystallization of these oxides through vacuum-annealing at elevated temperatures. This process extracts all heavily doped Co atoms from SrTiO3, resulting in uniformly distributed, high-density CoO nanoparticles embedded in the oxide support, providing structural stability, and enhancing photoelectrochemical performance.

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