Abstract
AbstractMelem (M) is an emergent metal‐free material due to its nature abundance and easy preparation. Synergetic escalation of band gap generation and charge transfer of M to increase solar chemical synthesis ability remains a hot challenging topic yet. Herein, we designed first time in‐situ prepared sulfur‐doped covalent melem‐based frameworks (S‐CMFs) photocatalyst for NAD(P)H regeneration and 1,3‐oxathiolane‐2‐thiones production under solar light irradiation. S‐CMFs photocatalyst shows excellent photocatalytic stability and activity over the pristine CMFs and M. The presence of sulfur in frameworks drastically improved the photocatalytic efficiency of S‐CMFs due to its unique properties such as enhanced the solar light adsorption ability, molar extinction coefficient, slow charge recombination, fast charge separation and transportation of solar light to generate electrons‐holes. Hence, S‐CMFs photocatalyst has a vital role in the regeneration of NADH and NADPH with 54.84 and 51.05 % catalytic efficiencies and ~ 99 % for yields and selectivity of 1,3‐oxathiolane‐2‐thiones under solar light. This study demonstrates that the Z‐scheme hetero junction and photocatalytic reaction using S‐CMFs would be a suitable route for the production of solar fuel via artificial photosynthetic system.
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