Theoretical investigation of structures and energetics of sodium adatom and its dimer on graphene: DFT study Original Research Article
Physica E: Low-dimensional Systems and Nanostructures, Available online 26 June 2015, Pages
Gagandeep Kaur, Shuchi Gupta, Pooja Goyal, Keya Dharamvir
Graphical abstractFigure: Total DOS for Na on the H-site of graphene and for isolated graphene (Spin-up and spin-down) .The energy is relative to EF of the Na-graphene system. Summary The adsorption energy, geometry, charge transfer, ionisation potential and density of states (DOS) and PDOS of adatom/ dimer - graphene system have been calculated using SIESTA package [1] which works within a DFT(density functional theory)-GGA (generalized gradient approximation) pseudopotential framework. Preferred site for adsorption of a sodium atom on graphene is the hollow site. For the Na dimer adsorption, we found that horizontal orientation is favored over the vertical one. From DOS plots, it is clear that graphene's states are nearly unaffected by the adsorption of Na adatom and Interaction between sodium and graphene is predominantly ionic
| A unique turn-off fluorescent strategy for sensing dopamine based on formed polydopamine (pDA) using graphene quantum dots (GQDs) as fluorescent probe Original Research Article
Sensors and Actuators B: Chemical, Available online 26 June 2015, Pages
Shaohuang Weng, Dong Liang, Huazhang Qiu, Zongen Liu, Zhen Lin, Zongfu Zheng, Ailin Liu, Wei Chen, Xinhua Lin
| Graphene Assistance Enhanced Dye-sensitized Solar Cell Performance of Tin Sulfide Microspheres Original Research Article
Applied Surface Science, Available online 25 June 2015, Pages
Bo Yang, Peng Chen, Xueqin Zuo, Lei Zhou, XiaoYang, Guang Li, Mingzai Wu, Yongqing Ma, Shaowei Jin, Kerong Zhu
Graphical abstractSnS2-based materials, with graphene assistance by simple physical mixing, as catalyst used in the counter electrodes of dye-sensitized solar cell.
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