The porous g-C 3 N 4 (PCN)/Sn/SnO ternary type-II heterojunction photocatalyst was synthesized by simple heat treatment combined with photodeposition. The results of a series of characterizations displayed that, with an electronic bridge structure, the type-II heterojunction photocatalyst has been successfully prepared. In the presence of PCN/Sn/SnO, RhB was degraded entirely in 40 min, and the conversion and selectivity of benzylamine oxidative reaction reached 99.9% within 6 h. The enhanced photocatalytic activity of PCN/Sn/SnO is attributed to high specific surface area and the metallic Sn 0 acting as electron bridges at the interface between SnO and PCN, which can accelerate the speed of photogenerated electrons transmission and inhibit recombination of photogenerated electron-hole pairs. After five cycles of operation, PCN/Sn/SnO maintained high photocatalytic activity. A reasonable photocatalytic reaction pathway was proposed via the free radic...

中文翻译：

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具有增强光催化活性的Sn桥Ⅱ型PCN / Sn / SnO异质结

通过简单的热处理结合光沉积法合成了多孔gC 3 N 4（PCN）/ Sn / SnO II型异质结三元光催化剂。一系列表征的结果表明，具有电子桥结构的II型异质结光催化剂已成功制备。在PCN / Sn / SnO存在下，RhB在40分钟内完全降解，苄胺氧化反应的转化率和选择性在6小时内达到99.9％。PCN / Sn / SnO的增强的光催化活性归因于高比表面积以及金属Sn 0在SnO和PCN之间的界面上充当电子桥的作用，从而可以加快光生电子的传输速度并抑制光生电子的复合。孔对。经过五个操​​作周期，PCN / Sn / SnO保持较高的光催化活性。提出了通过自由自由基的合理的光催化反应途径。