9.3 C
Canberra
Tuesday, July 1, 2025

Engineering of Lewis acid–base interfaces in Cu2S/ZnIn2S4 hole hetero-nanocages for enhanced photocatalytic CO2 discount


Selective photocatalytic CO2 discount (PCR) to CH4 stays difficult because of the sluggish cost switch kinetics and the concerned sophisticated C1 intermediates. Herein, the intentionally engineering Lewis acid-base interfaces in Cu2S/ZnIn2S4 hole hetero-nanocages (HHNCs) have been constructed, and the improved PCR exercise and selectivity has been achieved as a result of accelerated electron switch and stabilized intermediates. Each experimental and theoretical outcomes have demonstrated the development of a Lewis base interface with Cu2S and a Lewis acid interface with ZnIn2S4, which exhibit sturdy CO2 adsorption and discount of the Gibbs free vitality within the hydrogenation step (*CO to *CHO). As a consequence, a CH4 yield of 23.3 µmol g−1 h−1 beneath seen mild irradiation (λ > 400 nm) has been obtained with the Cu2S/ZnIn2S4 HHNCs, roughly 13.7, 10.1 and 6.3 occasions greater than that of naked Cu2S, ZnIn2S4 and bodily blended pattern (Cu2S/ZnIn2S4-mix), respectively. The product selectivity of CH4 is as excessive as 93.2%, in sharp distinction with 59.5% for Cu2S/ZnIn2S4-mix, 53.1% for Cu2S and 35.4% for ZnIn2S4. This work demonstrates an rational technique to engineer heterogenous Lewis acid-base interfaces for bettering PCR exercise and selectivity.

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