期刊
DIAMOND AND RELATED MATERIALS
卷 106, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2020.107879
关键词
Germanium; Graphene; Nanocubes; Sudan I; Photodegradation
类别
资金
- Guangdong National Science Foundation of China [2019A1515011163, 2019A1515011726]
- Guangdong University Innovation and Entrepreneurship Team Project [2019KCXTD017]
- Innovation Projects of General Colleges and Universities of Guangdong Province [2019A1515011163, 2018KTSCX203]
- Shaoguan Scientific Foundation [20198905]
In this work, highly uniform cubic germanium/husk-derived graphene nanocomposites (Ge/GR nanocubes) were synthesized via facile chemical methods. The structure and composition of the prepared Ge/GR nanocubes were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDX) etc., confirming a homogeneous distribution of Ge nanocubes (30-90 nm in size) on few-layered graphene nanosheets. Further investigations showed that the prepared novel Ge/GR nanocubes could combine both photocatalytical advantages of Ge nanocubes and graphene nanosheets for Sudan I purification with optimal removal efficiency of 98.1% in wide concentration range (0.25-4.0 mg/mL) at mild conditions. The prepared high active photocatalyst can be used for five consecutive runs. By using husk-derived graphite microcrystalline as the starting material of graphene, the cost of the Ge/GR nanocubes was obvious decreased, which fosters it a high active, low cost and durable candidate for azo dye removal in water.
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