Controlled engineering of nano-sized FeOOH@ZnO hetero-structures on reduced graphene oxide for lithium-ion storage and photo-Fenton reaction,CrystEngComm

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Controlled engineering of nano-sized FeOOH@ZnO hetero-structures on reduced graphene oxide for lithium-ion storage and photo-Fenton reaction
CrystEngComm ( IF 2.6 ) Pub Date : 2020-03-19 , DOI: 10.1039/d0ce00171f
Binghui Xu _{1,

2,

3,

4,

5} , Xin Dai _{1,

2,

3,

4,

5} , Qingke Tan _{1,

2,

3,

4,

5} , Yuan Wei _{5,

6,

7,

8} , Gonggang Liu _{5,

6,

7,

8} , Guanglei Wu _{1,

2,

3,

4,

5}

Affiliation

In this work, a nano-sized goethite and zinc oxide hetero-structure (FeOOH@ZnO) dispersed on reduced graphene oxide (RGO) sheets was synthesized for the first time to construct a ternary composite (FeOOH@ZnO/RGO) via a stepped graphene oxide (GO) deoxygenation process. Ferrous ions (Fe²⁺) and metal Zn were employed as reducing agents, which were transformed into FeOOH and ZnO nanoparticles, respectively, to form a hetero-structure in the reaction. Particularly, the size of the nanoparticles could be controlled by limiting the growth kinetics in this work. As a result, a porous RGO architecture was constructed with well-dispersed hetero-structured nanoparticles consisting of encapsulated FeOOH and ZnO nanocrystals. The FeOOH@ZnO/RGO composite exhibited unique lithium-ion storage properties as an anode material for lithium-ion batteries. Also, compared with the binary FeOOH/RGO and ZnO/RGO composites, the ternary FeOOH@ZnO/RGO composite showed the best battery performance as an anode material for lithium-ion batteries and the best photo-Fenton degradation activity toward methylene blue (MB) degradation under simulated sunlight irradiation. The preparation route for the FeOOH@ZnO/RGO composite is straightforward, effective and has great potential to be scaled-up.

中文翻译：

还原型氧化石墨烯上纳米级FeOOH @ ZnO异质结构的可控工程，用于锂离子存储和光芬顿反应

在这项工作中，分散在还原的石墨烯氧化物（RGO）片材的纳米尺寸的针铁矿和氧化锌异质结构（的FeOOH @ ZnO）的被首次构造一个三元复合物（针铁矿@的ZnO / RGO）合成通过阶梯氧化石墨烯（GO）的脱氧过程。亚铁离子（Fe ²⁺）和金属Zn用作还原剂，分别转化为FeOOH和ZnO纳米颗粒，以在反应中形成异质结构。特别地，可以通过限制这项工作中的生长动力学来控制纳米颗粒的尺寸。结果，用分散良好的异质结构纳米颗粒构建了多孔RGO体系，该纳米颗粒由封装的FeOOH和ZnO纳米晶体组成。FeOOH @ ZnO / RGO复合材料作为锂离子电池的负极材料具有独特的锂离子存储性能。此外，与二元FeOOH / RGO和ZnO / RGO复合材料相比，FeOOH @ ZnO / RGO三元复合材料作为锂离子电池的负极材料表现出最佳的电池性能，并且在模拟阳光照射下对亚甲基蓝（MB）的降解具有最佳的光芬顿降解活性。FeOOH @ ZnO / RGO复合材料的制备路线简单，有效，并且具有扩大规模的潜力。

更新日期：2020-03-19

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