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Bimetallic sulfide composites Cu 3 SnS 4 and Ag 3 SnS 4 outperform their monometallic counterparts SnS and Cu 2 S as CO 2 RR catalysts. The higher catalytic activity results from the formation of Cu 3 Sn and Ag 3 Sn alloys, where Ag 3 Sn is less prone to corrosion.
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Sanden et al. (2025) studied this question.
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