Photocatalysis for clean hydrogen production and wastewater remediation holds great promise for society. However, despite the significant progress in this field, the recyclability of the photocatalytic materials together with good photoactivity remain a great challenge. In here, photocatalytic materials for wastewater cleaning and hydrogen production are based on the utilization of photoactive macrogel beads as the photocatalyst. To do so, we design graphitic carbon nitride-based macrogels with tailored size, swelling behavior, and photocatalytic properties. Detailed studies reveal that the catalytic activity is correlated with the polymer particle size, g-C₃N₄ content, and swelling behavior, enabling the optimization of the photocatalytic processes. We believe that the presented strategy together with the good photocatalytic activity and excellent recyclability constitute an opening of the path for substantial progress in this field.

中文翻译：

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光活性石墨化氮化碳基凝胶珠作为可回收光催化剂

光催化用于清洁氢气生产和废水修复对社会具有广阔的前景。然而，尽管在该领域取得了重大进展，但是光催化材料的可回收性以及良好的光活性仍然是巨大的挑战。在此，用于废水清洁和制氢的光催化材料是基于利用光敏大凝胶珠作为光催化剂。为此，我们设计了具有定制尺寸，膨胀行为和光催化性能的石墨氮化碳基大凝胶。详细研究表明，催化活性与聚合物粒径gC ₃ N _4相关含量和溶胀行为，可以优化光催化过程。我们认为，所提出的策略以及良好的光催化活性和出色的可回收性为该领域的实质性发展开辟了道路。