The composite material, Ag/AgX/graphene (X=Br, Cl, I), is considered a promising photocatalyst for photocatalytic degradation of organic pollutants. Its photocatalytic activity is superior to that of the conventional TiO2 photocatalyst; the enhanced photocatalytic activity is attributed to its effective charge separation ability and wide visible light absorption. However, the Ag/AgX/graphene composite is often prepared in the powder form, limiting its wide-spread application. In addition, the simple fabrication of Ag/AgX/graphene composite films is highly challenging. In this study, a simple solution-based process based on meniscus-dragging deposition is demonstrated for the fabrication of Ag/AgI/rGO composite films. Uniform catalyst films with reasonable photocatalytic activities can be easily fabricated by using this microliter-scale solution process.

中文翻译：

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Ag/AgI/rGO 薄膜的简易制备和光催化活性

复合材料Ag/AgX/石墨烯（X=Br、Cl、I）被认为是一种很有前途的光催化降解有机污染物的光催化剂。其光催化活性优于常规TiO2光催化剂；增强的光催化活性归因于其有效的电荷分离能力和广泛的可见光吸收。然而，Ag/AgX/石墨烯复合材料通常以粉末形式制备，限制了其广泛应用。此外，Ag/AgX/石墨烯复合薄膜的简单制造极具挑战性。在这项研究中，展示了一种基于弯液面拖动沉积的简单基于溶液的工艺，用于制造 Ag/AgI/rGO 复合薄膜。