Cu2O/UiO-66-NH2 composite photocatalysts for efficient hydrogen production from ammonia borane hydrolysis

Jing Ping Chang; Chien Yi Wang; Yung Jung Hsu; Cheng Yu Wang

doi:10.1016/j.apcata.2022.119005

Cu₂O/UiO-66-NH₂ composite photocatalysts for efficient hydrogen production from ammonia borane hydrolysis

Jing Ping Chang, Chien Yi Wang, Yung Jung Hsu^*, Cheng Yu Wang^*

^*Corresponding author for this work

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

5 Scopus citations

Abstract

Ammonia borane (NH₃BH₃, AB) is a chemical hydride with a high hydrogen capacity of 19.6 wt%, which makes it a promising hydrogen carrier. Cuprous oxide (Cu₂O) is one of the most active photocatalysts for AB dehydrogenation at ambient conditions. However, the instability due to photocorrosion and high charge recombination are the main drawbacks of practical application. In this work, Cu₂O is coupled with a metal-organic framework (MOF) as a composite photocatalyst (Cu₂O/UiO-66-NH₂), which demonstrates a better photocatalytic performance in AB hydrolysis than its pure counterpart samples because of the heterojunction configuration. The Z-scheme charge transfer pathway in Cu₂O/UiO-66-NH₂ composite can improve charge separation, hydrogen production efficiency, photocatalyst stability, and reduce activation energy. The optimum composite photocatalyst comprising 50 wt% Cu₂O loading shows the highest hydrogen evolution yield of almost 2.3 equivalent H₂ from AB hydrolysis.

Original language	English
Article number	119005
Journal	Applied Catalysis A: General
Volume	650
DOIs	https://doi.org/10.1016/j.apcata.2022.119005
State	Published - 25 Jan 2023

Keywords

CuO, ammonia borane, hydrogen generation
Metal-organic framework
UiO-66

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.apcata.2022.119005

Cite this

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title = "Cu2O/UiO-66-NH2 composite photocatalysts for efficient hydrogen production from ammonia borane hydrolysis",

abstract = "Ammonia borane (NH3BH3, AB) is a chemical hydride with a high hydrogen capacity of 19.6 wt%, which makes it a promising hydrogen carrier. Cuprous oxide (Cu2O) is one of the most active photocatalysts for AB dehydrogenation at ambient conditions. However, the instability due to photocorrosion and high charge recombination are the main drawbacks of practical application. In this work, Cu2O is coupled with a metal-organic framework (MOF) as a composite photocatalyst (Cu2O/UiO-66-NH2), which demonstrates a better photocatalytic performance in AB hydrolysis than its pure counterpart samples because of the heterojunction configuration. The Z-scheme charge transfer pathway in Cu2O/UiO-66-NH2 composite can improve charge separation, hydrogen production efficiency, photocatalyst stability, and reduce activation energy. The optimum composite photocatalyst comprising 50 wt% Cu2O loading shows the highest hydrogen evolution yield of almost 2.3 equivalent H2 from AB hydrolysis.",

keywords = "CuO, ammonia borane, hydrogen generation, Metal-organic framework, UiO-66",

author = "Chang, {Jing Ping} and Wang, {Chien Yi} and Hsu, {Yung Jung} and Wang, {Cheng Yu}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2023",

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doi = "10.1016/j.apcata.2022.119005",

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T1 - Cu2O/UiO-66-NH2 composite photocatalysts for efficient hydrogen production from ammonia borane hydrolysis

AU - Chang, Jing Ping

AU - Wang, Chien Yi

AU - Hsu, Yung Jung

AU - Wang, Cheng Yu

PY - 2023/1/25

Y1 - 2023/1/25

N2 - Ammonia borane (NH3BH3, AB) is a chemical hydride with a high hydrogen capacity of 19.6 wt%, which makes it a promising hydrogen carrier. Cuprous oxide (Cu2O) is one of the most active photocatalysts for AB dehydrogenation at ambient conditions. However, the instability due to photocorrosion and high charge recombination are the main drawbacks of practical application. In this work, Cu2O is coupled with a metal-organic framework (MOF) as a composite photocatalyst (Cu2O/UiO-66-NH2), which demonstrates a better photocatalytic performance in AB hydrolysis than its pure counterpart samples because of the heterojunction configuration. The Z-scheme charge transfer pathway in Cu2O/UiO-66-NH2 composite can improve charge separation, hydrogen production efficiency, photocatalyst stability, and reduce activation energy. The optimum composite photocatalyst comprising 50 wt% Cu2O loading shows the highest hydrogen evolution yield of almost 2.3 equivalent H2 from AB hydrolysis.

AB - Ammonia borane (NH3BH3, AB) is a chemical hydride with a high hydrogen capacity of 19.6 wt%, which makes it a promising hydrogen carrier. Cuprous oxide (Cu2O) is one of the most active photocatalysts for AB dehydrogenation at ambient conditions. However, the instability due to photocorrosion and high charge recombination are the main drawbacks of practical application. In this work, Cu2O is coupled with a metal-organic framework (MOF) as a composite photocatalyst (Cu2O/UiO-66-NH2), which demonstrates a better photocatalytic performance in AB hydrolysis than its pure counterpart samples because of the heterojunction configuration. The Z-scheme charge transfer pathway in Cu2O/UiO-66-NH2 composite can improve charge separation, hydrogen production efficiency, photocatalyst stability, and reduce activation energy. The optimum composite photocatalyst comprising 50 wt% Cu2O loading shows the highest hydrogen evolution yield of almost 2.3 equivalent H2 from AB hydrolysis.

KW - CuO, ammonia borane, hydrogen generation

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