Precisely engineering the decoration of metal nanoparticles on the special surface of semiconductor represents a promising strategy to design efficient metal–semiconductor heterostructured photocatalysts. This study demonstrates a versatile soft‐template method to fabricate a novel nonsymmetrical heterostructured Ag/AgI nanoplate, in which only one side surface of the nanoplate is covered with uniform 2D Ag nanoweb. Compared with symmetrical heterostructure, the nonsymmetrical heterostructure may further facilitate the separation of photogenerated electron–hole pairs and shows a greatly enhanced photocatalytic activity. This study may open up a new way to improve the photocatalytic property by synthesizing nonsymmetrical metal–semiconductor composites.

中文翻译：

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设计具有优异光催化活性的新型非对称Ag / AgI纳米板

精确地设计半导体特殊表面上的金属纳米粒子的装饰代表了设计有效的金属-半导体异质结构光催化剂的一种有前途的策略。这项研究演示了一种通用的软模板方法，该方法可制造新颖的非对称异质结构Ag / AgI纳米板，其中纳米板的仅一个侧面被均匀的二维Ag纳米网覆盖。与对称异质结构相比，非对称异质结构可进一步促进光生电子-空穴对的分离，并显示出大大增强的光催化活性。这项研究可能会开辟一种通过合成非对称金属-半导体复合材料来提高光催化性能的新方法。