Interfacial Electronic Properties and Photocatalytic CO2 Reduction of a Z-Scheme SnS/(CH3NH3)2AgBiI6 Double Perovskite Heterostructure

Peiying Li; Yanming Lin; Mintong Ma; Minjie Zhang; Jiayi Li; Zhengkun Wang; Velusamy Maheskumar; Zhen-Yi Jiang; Ruiqin Zhang

doi:10.1021/acsaem.1c03420

Author(s)

Peiying Li
Yanming Lin
Mintong Ma
Minjie Zhang
Jiayi Li
Zhengkun Wang
Velusamy Maheskumar
Zhen-Yi Jiang

Detail(s)

Original language	English
Pages (from-to)	1942-1952
Journal / Publication	ACS Applied Energy Materials
Volume	5
Issue number	2
Online published	10 Feb 2022
Publication status	Published - 28 Feb 2022

Link(s)

DOI	DOI https://doi.org/10.1021/acsaem.1c03420 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85125076690&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(59099fa2-2b3d-4d39-953b-c2d824ca1925).html

Abstract

The conversion of CO₂ into energy fuel is an effective strategy to address energy shortages and environmental problems. To enhance the photocatalytic activity of CO₂reduction, the lead-free halide double perovskite (CH₃NH₃)₂AgBiI₆ (010) surface is combined with a SnS monolayer to construct a stable SnS/(CH₃NH₃)₂AgBiI₆ photocatalyst. The bandgap of SnS/(CH₃NH₃)₂AgBiI₆ is narrow (1.566 eV) compared with the (CH₃NH₃)₂AgBiI₆ (010) surface, which enhances the absorption of visible light and leads to the redshift of the absorption edge. The interface interaction between the (CH₃NH₃)₂AgBiI₆ (010) surface and the SnS monolayer causes electron flow from the SnS monolayer to the (CH₃NH₃)₂AgBiI₆ (010) surface. SnS/(CH3NH3)(2)AgBiI6 has a good Z-scheme band alignment, which facilitates the separation of electron-hole pairs. The electrons accumulate at the CB of the SnS monolayer and participate in the CO₂ reduction reaction. In comparison with the (CH₃NH₃)₂AgBiI₆ (010) surface, SnS/ (CH₃NH₃)₂AgBiI₆ changes the rate-determination step and reduces the Gibbs free energy from 2.17 to 1.72 eV. The results indicate that SnS/(CH₃NH₃)₂AgBiI₆ improves the photocatalytic activity of CO₂ reduction.

Research Area(s)

CO2 reduction, density functional theory, double perovskite, heterostructure, photocatalyst

SDG 13 - Climate Action

Citation Format(s)

[ RIS ] [ BibTeX ]

Interfacial Electronic Properties and Photocatalytic CO₂ Reduction of a Z-Scheme SnS/(CH₃NH₃)₂AgBiI₆ Double Perovskite Heterostructure. / Li, Peiying; Lin, Yanming; Ma, Mintong et al.
In: ACS Applied Energy Materials, Vol. 5, No. 2, 28.02.2022, p. 1942-1952.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Li, P, Lin, Y, Ma, M, Zhang, M, Li, J, Wang, Z, Maheskumar, V, Jiang, Z-Y & Zhang, R 2022, 'Interfacial Electronic Properties and Photocatalytic CO₂ Reduction of a Z-Scheme SnS/(CH₃NH₃)₂AgBiI₆ Double Perovskite Heterostructure', ACS Applied Energy Materials, vol. 5, no. 2, pp. 1942-1952. https://doi.org/10.1021/acsaem.1c03420

Li, P., Lin, Y., Ma, M., Zhang, M., Li, J., Wang, Z., Maheskumar, V., Jiang, Z.-Y., & Zhang, R. (2022). Interfacial Electronic Properties and Photocatalytic CO₂ Reduction of a Z-Scheme SnS/(CH₃NH₃)₂AgBiI₆ Double Perovskite Heterostructure. ACS Applied Energy Materials, 5(2), 1942-1952. https://doi.org/10.1021/acsaem.1c03420

Li P, Lin Y, Ma M, Zhang M, Li J, Wang Z et al. Interfacial Electronic Properties and Photocatalytic CO₂ Reduction of a Z-Scheme SnS/(CH₃NH₃)₂AgBiI₆ Double Perovskite Heterostructure. ACS Applied Energy Materials. 2022 Feb 28;5(2):1942-1952. Epub 2022 Feb 10. doi: 10.1021/acsaem.1c03420

Li, Peiying ; Lin, Yanming ; Ma, Mintong et al. / Interfacial Electronic Properties and Photocatalytic CO₂ Reduction of a Z-Scheme SnS/(CH₃NH₃)₂AgBiI₆ Double Perovskite Heterostructure. In: ACS Applied Energy Materials. 2022 ; Vol. 5, No. 2. pp. 1942-1952.