Abstract Tremendous demands for photocatalysts with high chemical activity and stability, low cost and capability of response to visible-light have stimulated intensive research on developing versatile materials with special photocatalytic applications. Here we report a novel g-C 3 N 4 /BiOBr-RGO aerogel ternary-component heterojunction photocatalyst for degradation of RhB under visible light irradiation. As a result of synergistic effect of the g-C 3 N 4 , BiOBr and RGO, the hybrid photocatalysts exhibit better activity than the single component catalysts (pure g-C 3 N 4 , BiOBr) and bi-component catalysts (g-C 3 N 4 /BiOBr) in the same time period (60 min). The enhanced photocatalytic performance originates from a novel nanoarchitecture in which BiOBr exposed more active plane and RGO worked as a conductive support further improved the photogenerated charge separation. Moreover, due to the 3D structure of RGO after reaction the photocatalysts can be easily removed from the treated solution and reused, which opens up a way for the recycling applications of catalysts in aqueous reaction systems.

中文翻译：

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由gC 3 N 4 /BiOBr异质结和具有增强光催化性能的氧化石墨烯构成的三元还原氧化石墨烯气凝胶

摘要 对具有高化学活性和稳定性、低成本和对可见光响应能力的光催化剂的巨大需求激发了对开发具有特殊光催化应用的多功能材料的深入研究。在这里，我们报告了一种新型 gC 3 N 4 /BiOBr-RGO 气凝胶三元异质结光催化剂，用于在可见光照射下降解 RhB。由于gC 3 N 4 、BiOBr 和RGO 的协同作用，混合光催化剂表现出比单组分催化剂（纯gC 3 N 4 、BiOBr）和双组分催化剂（gC 3 N 4 /BiOBr）更好的活性在同一时间段内（60 分钟）。增强的光催化性能源于一种新型纳米结构，其中 BiOBr 暴露出更多的活性平面，RGO 作为导电载体进一步改善了光生电荷分离。此外，由于反应后 RGO 的 3D 结构，光催化剂可以很容易地从处理过的溶液中去除并重复使用，这为催化剂在水性反应体系中的回收应用开辟了道路。