Sulfur-doped Eosin-B (SDE-B) photocatalysts were synthesized for the first time utilizing sublimed sulfur (S₈) as a dopant in an in situ thermal copolymerization technique. Sulfur doping not only increased Eosin-B (E-B) absorption range for solar radiation but also improved fixation and oxygenation capabilities. The doped sulfur bridges the S-S bond by substituting for the edge bromine of the E-B bond. The improved photocatalytic activity of SDE-B in the fixation and oxygenation of NAD⁺/NADP⁺ and sulfides using solar light is attributed to the photo-induced hole of SDE-B's high fixation and oxygenation capacity, as well as an efficient suppression of electron and hole recombination. The powerful light-harvesting bridge system created using SDE-B as a photocatalyst works extremely well, resulting in high NADH/NADPH regeneration (79.58/76.36%) and good sulfoxide yields (98.9%) under solar light. This study focuses on the creation and implementation of a sulfur-doped photocatalyst for direct fine chemical regeneration and organic transformation.

中文翻译：

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利用太阳光对 NAD+/NADP+ 和硫化物进行光催化固定和氧化：探索机理研究及其对合成应用的影响

首次利用升华硫（S ₈）作为掺杂剂通过原位热共聚技术合成了硫掺杂曙红-B（SDE-B）光催化剂。硫掺杂不仅增加了曙红 B (EB) 对太阳辐射的吸收范围，而且还提高了固定和氧化能力。掺杂的硫通过取代 EB 键的边缘溴来桥接 SS 键。SDE-B 在利用太阳光固定和氧化 NAD ⁺ /NADP ⁺和硫化物方面的光催化活性的提高归因于 SDE-B 的高固定和氧化能力的光诱导空穴，以及对电子的有效抑制和空穴复合。使用 SDE-B 作为光催化剂创建的强大的光收集桥系统工作得非常好，在太阳光下产生高 NADH/NADPH 再生 (79.58/76.36%) 和良好的亚砜产率 (98.9%)。本研究的重点是创建和实施用于直接精细化学品再生和有机转化的硫掺杂光催化剂。