The probable influence of in situ thermal reduction of graphene oxides on the crystallization behavior of isotactic polypropylene

Polymer ◽  
2014 ◽  
Vol 55 (16) ◽  
pp. 4341-4347 ◽  
Author(s):  
Jiashu Fan ◽  
Ruijin Huang ◽  
Shibing Ye ◽  
Tianjiao Li ◽  
Jiachun Feng
Keyword(s):  
Isotactic Polypropylene ◽  
Crystallization Behavior ◽  
Thermal Reduction ◽  
Graphene Oxides

scholarly journals Preparations, Characterizations, and a Comparative Study on Photovoltaic Performance of Two Different Types of Graphene/TiO2 Nanocomposites Photoelectrodes

2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Uea-aree Kanta ◽  
Voranuch Thongpool ◽  
Weradesh Sangkhun ◽  
Nutthapon Wongyao ◽  
Jatuphorn Wootthikanokkhan
Keyword(s):  
Comparative Study ◽  
Chemical Reduction ◽  
Photovoltaic Performance ◽  
Research Work ◽  
Dye Sensitized Solar Cells ◽  
Thermal Reduction ◽  
Graphene Oxides ◽  
Treatment Processes ◽  
Reduced Graphene

This research work undertook a comparative study of the promoting effects of graphene in TiO2 photoanodes. The aim of this work was to investigate the effects of the types and concentration of reduced graphene oxides (rGO) on structure properties and the photovoltaic performance of TiO2 based electrodes. Graphene oxide (GO) was prepared by using modified Hammer’s method. Next, GO was reduced by using two different approaches, which were the chemical reduction with vitamin C and thermal reduction. The latter approach was also carried out in situ during the fabrication and heat treatment processes of the dye-sensitized solar cells (DSSCs). From the results, it was found that the photovoltaic performance of the DSSCs containing the GO/TiO2 electrode, in which the GO phase experienced an in situ thermal reduction, was superior to those containing rGO/TiO2. It was also found that the power conversion efficiency of the DSSCs changed with the concentration of graphene in a nonlinear fashion. The optimum concentrations of graphene, corresponding to the highest PCE values of the GO/TiO2 based DSSC (3.69%) and that of the rGO/TiO2 based cell (2.90%), were 0.01 wt% and 0.03 wt%, respectively.

Investigation of the crystallization behavior of isotactic polypropylene polymerized with different Ziegler-Natta catalysts

2013 ◽  
Vol 129 (5) ◽  
pp. 2663-2670 ◽  
Author(s):  
Jian Kang ◽  
Jingping Li ◽  
Shaohua Chen ◽  
Hongmei Peng ◽  
Bin Wang ◽  
...  
Keyword(s):  
Isotactic Polypropylene ◽  
Crystallization Behavior ◽  
Ziegler Natta Catalysts

scholarly journals The Effect of Thermal Reduction on the Photoluminescence and Electronic Structures of Graphene Oxides

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
C.-H. Chuang ◽  
Y.-F. Wang ◽  
Y.-C. Shao ◽  
Y.-C. Yeh ◽  
D.-Y. Wang ◽  
...  
Keyword(s):  
Electronic Structures ◽  
Thermal Reduction ◽  
Graphene Oxides

Crystallization behavior of isotactic polypropylene/magnesium salt whisker composites modified by compatibilizer PP-g-MAH

2010 ◽  
Vol 103 (2) ◽  
pp. 701-710 ◽  
Author(s):  
Zhiyong Wei ◽  
Wanxi Zhang ◽  
Guangyi Chen ◽  
Jicai Liang ◽  
Ying Chang ◽  
...  
Keyword(s):  
Isotactic Polypropylene ◽  
Crystallization Behavior ◽  
Magnesium Salt
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