A dual Z-scheme heterojunction Cu-CuTCPP/Cu<subscript>2</subscript>O/CoAl-LDH for photocatalytic CO<subscript>2</subscript> reduction to C1 and C2 products.
In: Dalton Transactions: An International Journal of Inorganic Chemistry, Jg. 52 (2023-09-28), Heft 36, S. 12742-12754
academicJournal
Zugriff:
In this research, a ternary Cu-CuTCPP/Cu 2 O/CoAl-LDH composite with a dual Z-scheme heterostructure was fabricated based on a Cu 2 O photocatalyst and applied in photocatalytic CO 2 reduction. The physicochemical properties of the prepared catalysts and the possible reaction mechanism in CO 2 reduction were analyzed and studied by various characterization methods. The activity of CO 2 reduction significantly increased, especially forming C2 products. The optimal yield of C 2 H 4 and C 2 H 6 reached 1.56 and 1.92 μmol g −1 h −1 respectively, which was 14.45 and 17.45 times that from using the Cu 2 O monomer. In addition, the selectivity of C2 products reached 37.4%. The satisfactory C2 yield was mainly due to the fact that Cu 1+δ 2 (COO) 3 nodes in Cu-CuTCPP contained adjacent Cu sites, which effectively promoted the C–C coupling reaction. Moreover, the dual Z-scheme heterojunction stimulated the separation of photogenerated electron–hole pairs and diminished the recombination rate. This work contributes to the development of novel photocatalysts with a dual Z-scheme heterojunction and facilitates the generation of valuable C2 products. [ABSTRACT FROM AUTHOR]
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Titel: |
A dual Z-scheme heterojunction Cu-CuTCPP/Cu<subscript>2</subscript>O/CoAl-LDH for photocatalytic CO<subscript>2</subscript> reduction to C1 and C2 products.
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Autor/in / Beteiligte Person: | Xia, Cheng ; Guo, Rui-tang ; Bi, Zhe-xu ; Zhang, Zhen-rui ; Li, Chu-fan ; Pan, Wei-guo |
Zeitschrift: | Dalton Transactions: An International Journal of Inorganic Chemistry, Jg. 52 (2023-09-28), Heft 36, S. 12742-12754 |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 1477-9226 (print) |
DOI: | 10.1039/d3dt01969a |
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