Abstract An easy yet viable hydrothermal reaction is demonstrated to prepare ultra-small Zn2SnO4 nanoparticle with ~4.2 nm decorated reduced graphene oxide (RGO) nanocomposites (Zn2SnO4-RGO). The pure phase Zn2SnO4 nanoparticles with ~4.2 nm can be achieved during hydrothermal reaction, meanwhile, these nanoparticles uniformly dispersed on 2D graphene sheet, and graphene oxide was reduced. The photocatalytic performances of the as-prepared Zn2SnO4-RGO nanocomposites with different RGO mass ratio are investigated. The optimum synergetic effect is found when the RGO mass ratio is 7.11%, with the photocurrent and photodegradation efficiency improved by about 300% and 80% on methylene blue (MB), respectively, compared with the pure Zn2SnO4 nanoparticles.

中文翻译：

---

Nano-Zn2SnO4/还原氧化石墨烯复合材料增强光催化性能

摘要证明了一种简单而可行的水热反应可以制备具有~4.2 nm 装饰还原氧化石墨烯 (RGO) 纳米复合材料 (Zn2SnO4-RGO) 的超小 Zn2SnO4 纳米颗粒。在水热反应过程中可以获得~4.2 nm的纯相Zn2SnO4纳米颗粒，同时这些纳米颗粒均匀分散在二维石墨烯片上，氧化石墨烯被还原。研究了所制备的具有不同 RGO 质量比的 Zn2SnO4-RGO 纳米复合材料的光催化性能。当 RGO 质量比为 7.11% 时，发现最佳协同效应，与纯 Zn2SnO4 纳米粒子相比，亚甲蓝 (MB) 的光电流和光降解效率分别提高了约 300% 和 80%。