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Hybridization of carbon-dots with ZnO nanoparticles of different sizes
Journal of the Taiwan Institute of Chemical Engineers ( IF 5.5 ) Pub Date : 2018-03-07 , DOI: 10.1016/j.jtice.2018.02.007
Mulugeta Tesema Efa , Toyoko Imae

ZnO nanoparticles were hybridized with carbon dots (Cdots) and the hybrids were characterized. ZnO(100) and ZnO(20) with particle sizes of 94 and 20 nm, respectively, were synthesized by calcination and polyol solvent methods, respectively. The morphology, size and crystallinity of ZnO nanoparticles were not varied by the addition of Cdots. The spectroscopic results indicated the successful attachment of Cdots to ZnO nanoparticles. The specific surface area of ZnO(20) was larger than ZnO(100) and increased with the hybridization of Cdots. When the amount of ethylenediamine against citric acid between raw materials of Cdots was increased, the existence of nitrogen in Cdots became recognized. The band gap increased with decreasing particle size, and the addition of Cdots decreased the band gap of ZnO. Thus, these results suggest that the hybrids of ZnO with Cdots may exert the performance on photocatalysis and photovoltaic electrochemistry.



中文翻译:

碳点与不同尺寸的ZnO纳米颗粒的杂交

ZnO纳米粒子与碳点(Cdots)杂交,并鉴定了杂化物。分别通过煅烧和多元醇溶剂法合成了粒径分别为94和20 nm的ZnO(100)和ZnO(20)。ZnO纳米粒子的形态,大小和结晶度不会因添加Cdots而改变。光谱结果表明Cdots成功附着在ZnO纳米颗粒上。ZnO(20)的比表面积大于ZnO(100),并且随着Cdot的杂交而增加。当在Cdot的原料之间增加乙二胺对柠檬酸的量时,Cdots中氮的存在被识别。带隙随着粒径的减小而增加,而Cdots的加入降低了ZnO的带隙。因此,

更新日期:2018-03-07
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