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首页> 外文期刊>RSC Advances >Rapid synthesis of a flower-like ZnO/rGO/Ag microano-composite with enhanced photocatalytic performance by a one-step microwave method
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Rapid synthesis of a flower-like ZnO/rGO/Ag microano-composite with enhanced photocatalytic performance by a one-step microwave method

机译：一步法快速合成具有光催化性能的花状ZnO / rGO / Ag微/纳米复合材料

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摘要

Flower-like ZnO/rGO/Ag microano-composites (MNCs) have been engineered by a one-step microwave technique using graphene oxide, AgNO3 and Zn(CH3COO)(2) as raw materials without adding any external toxic reagent. This is a facile and rapid process requiring only low power microwave irradiation (120 W). Various characterization results showed that the flower-like ZnO/rGO/Ag MNCs consisted of a ZnO nanosheet and Ag nanoparticles and reduced graphene oxide (rGO) deposited on ZnO nanosheet surface. The composite shows an enhanced and faster ultraviolet and simulated daylight photocatalytic property, i.e. 92.73% and 70.43% degradation of methyl orange in 20 minutes as compared to the values of 70.91% and 60.82%, 55.48% and 50.61% by bare ZnO and rGO/ZnO, respectively. The enhanced photocatalytic property is attributed to an efficient charge transfer process from ZnO to both Ag and rGO. This method would be beneficial for synthesizing efficient ZnO-based ternary photocatalysts with a combination of metal and rGO.
机译：花状ZnO / rGO / Ag微/纳米复合材料（MNC）是通过一步一步微波技术设计的，使用氧化石墨烯，AgNO3和Zn（CH3COO）（2）作为原料，而无需添加任何外部有毒试剂。这是一种简便而快速的过程，仅需要低功率微波辐射（120 W）。各种表征结果表明，花状ZnO / rGO / Ag MNCs由ZnO纳米片和Ag纳米粒子以及沉积在ZnO纳米片表面的还原氧化石墨烯（rGO）组成。该复合材料显示出增强和更快的紫外线和模拟日光催化性能，即在20分钟内甲基橙的降解率为92.73％和70.43％，而裸露的ZnO和rGO /分别为70.91％和60.82％，55.48％和50.61％。分别为ZnO增强的光催化性能归因于从ZnO到Ag和rGO的有效电荷转移过程。该方法对于合成金属和rGO的高效ZnO基三元光催化剂将是有益的。

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