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- 저자 : Qianku Hu (검색결과 2 건)
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Novel Hierarchical TiO2/C Nanocomposite with Enhanced Photocatalytic Performance
Yupeng Gao,Hao Chen,Aiguo Zhou,Zhengyang Li,Fanfan Liu,Qianku Hu,Libo Wang 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2015 NANO Vol.10 No.5
"Hierarchical TiO2 /carbon nanocomposites were synthesized by oxidation of two-dimensional(2D) Ti3C2 nanosheets at different temperatures. Crystal structures and morphologies of the obtained samples were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and Raman spectroscopy. The results show that 2D Ti3C2 nanosheets are partially oxidized to form a novel hierarchical nanostructure which is composed of carbon nanosheets and TiO2 nanoparticles. With the calcination temperature increasing, the crystal structure of TiO2 nanoparticles changes from anatase to rutile and the hierarchical structure was gradually destroyed. The photodegradation results reveal that the samples obtained at 200℃ and 285℃ show much better photocatalytic properties than P25. And meanwhile the photocatalytic property will become worse with the increase in calcinations temperature."
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Synthesis and Electrochemical Performance of Ti3C2Tx with Hydrothermal Process
Libo Wang,Heng Zhang,Bo Wang,Changjie Shen,Chuanxiang Zhang,Qianku Hu,Aiguo Zhou,Baozhong Liu 대한금속·재료학회 2016 ELECTRONIC MATERIALS LETTERS Vol.12 No.5
In this study, a simple hydrothermal method has been developedto prepare Ti3C2Tx from Ti3AlC2 as a high-performance electrodematerial for supercapacitors. This method is environmentallyfriendly and has a low level of danger. The morphology andstructure of the Ti3C2Tx can be controlled by hydrothermalreaction time, temperature and NH4F amounts. The preparedTi3C2Tx was characterized by X-ray diffraction, field emissionscanning electron microscopy, Raman spectroscopy, X-rayphotoelectron spectroscopy and Brunauer-Emmet-Teller. Theresults show that the prepared Ti3C2Tx is terminated by O, OH,and F groups. The electrochemical properties of the Ti3C2Txsample exhibit specific capacitance up to 141 Fcm−3 in 3 MKOH aqueous electrolyte, and even after 1000 cycles, nosignificant degradation of the volumetric capacitance wasobserved. These results indicate that the Ti3C2Tx materialprepared by this hydrothermal method can be used in highperformance supercapacitors.
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