Charge partitioning by intertwined metal-oxide nano-architectural networks for the photocatalytic dry reforming of methane

Shusaku Shoji; Abdillah Sani Bin Mohd Najib; Min Wen Yu; Tomokazu Yamamoto; Sou Yasuhara; Akira Yamaguchi; Xiaobo Peng; Syo Matsumura; Satoshi Ishii; Yohei Cho; Takeshi Fujita; Shigenori Ueda; Kuo Ping Chen; Hideki Abe; Masahiro Miyauchi

doi:10.1016/j.checat.2021.11.015

Charge partitioning by intertwined metal-oxide nano-architectural networks for the photocatalytic dry reforming of methane

Shusaku Shoji, Abdillah Sani Bin Mohd Najib, Min Wen Yu, Tomokazu Yamamoto, Sou Yasuhara, Akira Yamaguchi, Xiaobo Peng, Syo Matsumura, Satoshi Ishii, Yohei Cho, Takeshi Fujita, Shigenori Ueda, Kuo Ping Chen, Hideki Abe, Masahiro Miyauchi

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The photocatalytic dry reforming of methane (photoDRM: CH₄ + CO₂ = 2CO + 2H₂) converts greenhouse gases into valuable synthesis gas with photon energy. However, previous photoDRM catalysts comprising supported metal nanoparticles hardly avoid the recombination of photoexcited charges. Herein, we report that significant photoDRM performance can be achieved by a metal-oxide nanocomposite consisting of nanometer-thick, intertwined networks of fibrous rhodium metal and cerium dioxide, i.e., Rh#CeO₂. The Rh#CeO₂ nanocomposite exhibits the world-highest conversion and yield in photoDRM under UV light irradiation, being accompanied with no other side reactions such as reverse water gas shift reaction. Theoretical simulations and Kelvin probe force microscopy demonstrate that the photoexcited electrons and holes in Rh#CeO₂ are efficiently partitioned into the Rh- and CeO₂ nanophases, respectively. The efficient charge partitioning in Rh#CeO₂ accounts for the selective photoDRM reaction.

Original language	English
Pages (from-to)	321-329
Number of pages	9
Journal	Chem Catalysis
Volume	2
Issue number	2
DOIs	https://doi.org/10.1016/j.checat.2021.11.015
Publication status	Published - Feb 17 2022

All Science Journal Classification (ASJC) codes

Organic Chemistry
Physical and Theoretical Chemistry
Chemistry (miscellaneous)

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Shoji, S., Bin Mohd Najib, A. S., Yu, M. W., Yamamoto, T., Yasuhara, S., Yamaguchi, A., Peng, X., Matsumura, S., Ishii, S., Cho, Y., Fujita, T., Ueda, S., Chen, K. P., Abe, H., & Miyauchi, M. (2022). Charge partitioning by intertwined metal-oxide nano-architectural networks for the photocatalytic dry reforming of methane. Chem Catalysis, 2(2), 321-329. https://doi.org/10.1016/j.checat.2021.11.015

Shoji, S, Bin Mohd Najib, AS, Yu, MW, Yamamoto, T, Yasuhara, S, Yamaguchi, A, Peng, X, Matsumura, S, Ishii, S, Cho, Y, Fujita, T, Ueda, S, Chen, KP, Abe, H & Miyauchi, M 2022, 'Charge partitioning by intertwined metal-oxide nano-architectural networks for the photocatalytic dry reforming of methane', Chem Catalysis, vol. 2, no. 2, pp. 321-329. https://doi.org/10.1016/j.checat.2021.11.015

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abstract = "The photocatalytic dry reforming of methane (photoDRM: CH4 + CO2 = 2CO + 2H2) converts greenhouse gases into valuable synthesis gas with photon energy. However, previous photoDRM catalysts comprising supported metal nanoparticles hardly avoid the recombination of photoexcited charges. Herein, we report that significant photoDRM performance can be achieved by a metal-oxide nanocomposite consisting of nanometer-thick, intertwined networks of fibrous rhodium metal and cerium dioxide, i.e., Rh#CeO2. The Rh#CeO2 nanocomposite exhibits the world-highest conversion and yield in photoDRM under UV light irradiation, being accompanied with no other side reactions such as reverse water gas shift reaction. Theoretical simulations and Kelvin probe force microscopy demonstrate that the photoexcited electrons and holes in Rh#CeO2 are efficiently partitioned into the Rh- and CeO2 nanophases, respectively. The efficient charge partitioning in Rh#CeO2 accounts for the selective photoDRM reaction.",

author = "Shusaku Shoji and {Bin Mohd Najib}, {Abdillah Sani} and Yu, {Min Wen} and Tomokazu Yamamoto and Sou Yasuhara and Akira Yamaguchi and Xiaobo Peng and Syo Matsumura and Satoshi Ishii and Yohei Cho and Takeshi Fujita and Shigenori Ueda and Chen, {Kuo Ping} and Hideki Abe and Masahiro Miyauchi",

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AU - Shoji, Shusaku

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AU - Yamamoto, Tomokazu

AU - Yasuhara, Sou

AU - Yamaguchi, Akira

AU - Peng, Xiaobo

AU - Matsumura, Syo

AU - Ishii, Satoshi

AU - Cho, Yohei

AU - Fujita, Takeshi

AU - Ueda, Shigenori

AU - Chen, Kuo Ping

AU - Abe, Hideki

AU - Miyauchi, Masahiro

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N2 - The photocatalytic dry reforming of methane (photoDRM: CH4 + CO2 = 2CO + 2H2) converts greenhouse gases into valuable synthesis gas with photon energy. However, previous photoDRM catalysts comprising supported metal nanoparticles hardly avoid the recombination of photoexcited charges. Herein, we report that significant photoDRM performance can be achieved by a metal-oxide nanocomposite consisting of nanometer-thick, intertwined networks of fibrous rhodium metal and cerium dioxide, i.e., Rh#CeO2. The Rh#CeO2 nanocomposite exhibits the world-highest conversion and yield in photoDRM under UV light irradiation, being accompanied with no other side reactions such as reverse water gas shift reaction. Theoretical simulations and Kelvin probe force microscopy demonstrate that the photoexcited electrons and holes in Rh#CeO2 are efficiently partitioned into the Rh- and CeO2 nanophases, respectively. The efficient charge partitioning in Rh#CeO2 accounts for the selective photoDRM reaction.

AB - The photocatalytic dry reforming of methane (photoDRM: CH4 + CO2 = 2CO + 2H2) converts greenhouse gases into valuable synthesis gas with photon energy. However, previous photoDRM catalysts comprising supported metal nanoparticles hardly avoid the recombination of photoexcited charges. Herein, we report that significant photoDRM performance can be achieved by a metal-oxide nanocomposite consisting of nanometer-thick, intertwined networks of fibrous rhodium metal and cerium dioxide, i.e., Rh#CeO2. The Rh#CeO2 nanocomposite exhibits the world-highest conversion and yield in photoDRM under UV light irradiation, being accompanied with no other side reactions such as reverse water gas shift reaction. Theoretical simulations and Kelvin probe force microscopy demonstrate that the photoexcited electrons and holes in Rh#CeO2 are efficiently partitioned into the Rh- and CeO2 nanophases, respectively. The efficient charge partitioning in Rh#CeO2 accounts for the selective photoDRM reaction.

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Charge partitioning by intertwined metal-oxide nano-architectural networks for the photocatalytic dry reforming of methane

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