中文
相关论文

相关论文: Activation of Graphenic Carbon due to Substitution…

200 篇论文

Carbon(C) doped hexagonal boron nitride(hBN) has been experimentally reported in recent years to be a possible catalytic host to oxygen reduction reaction(ORR), as well as a possible ferromagnet at room temperature. Substitution by C in hBN…

材料科学 · 物理学 2019-02-18 Rita Maji , Joydeep Bhattacharjee

The interaction between substitutional nitrogen atoms in graphene is studied by performing first principles calculations. The nearest neighbor interaction between nitrogen dopants is highly repulsive because of the strong electrostatic…

材料科学 · 物理学 2015-03-19 Hongjun Xiang , Bing Huang , Zhenyu Li , Su-Huai Wei , Jinlong Yang , Xingao Gong

Active sites and catalytic mechanism of nitrogen-doped graphene in oxygen reduction reaction (ORR) have been extensively studied but are still inconclusive, partly due to the lack of an experimental method that can detect the active sites.…

介观与纳米尺度物理 · 物理学 2014-10-29 Tan Xing , Yao Zheng , Lu Hua Li , Bruce C. C. Cowie , Daniel Gunzelmann , Shi Zhang Qiao , Shaoming Huang , Ying Chen

It was recently shown that nitrogen-doped graphene (NG) can exhibit both p- and n-type characters depending on the C-N bonding nature, which represents a significant bottleneck for the development of graphene-based electronics. Based on…

介观与纳米尺度物理 · 物理学 2015-03-10 Hyo Seok Kim , Han Seul Kim , Seong Sik Kim , Yong-Hoon Kim

We investigate electronic transport in the nitrogen-doped graphene containing different configurations of point defects: singly or doubly substituting N atoms and nitrogen-vacancy complexes. The results are numerically obtained using the…

介观与纳米尺度物理 · 物理学 2014-08-06 T. M. Radchenko , V. A. Tatarenko , I. Yu. Sagalianov , Yu. I. Prylutskyy

The hybrid nanostructures of nitrogen doped carbon materials and nonprecious transition metals are among the most promising electrocatalysts to replace noble metal catalysts for renewable energy applications. However, the fundamental…

材料科学 · 物理学 2018-05-14 Wei Pei , Si Zhou , Yizhen Bai , Jijun Zhao

We perform a first principle calculation on the electronic properties of carbon doped graphitic boron nitride graphitic BN. It was found that carbon substitution for either boron or nitrogen atom in graphitic BN can induce spontaneous…

其他凝聚态物理 · 物理学 2009-11-11 R. Wu , L. Liu , Y. P. Feng

Adsorption of molecular oxygen on B-, N-, Al-, Si-, P-, Cr- and Mn-doped graphene is theoretically studied using density functional theory in order to clarify if O2 can change the possibility of using doped graphene for gas sensors,…

介观与纳米尺度物理 · 物理学 2015-03-14 Jiayu Dai , Jianmin Yuan

Having access to the chemical environment at the atomic level of a dopant in a nanostructure is crucial for the understanding of its properties. We have performed atomically-resolved electron energy-loss spectroscopy to detect individual…

We report the local atomic and electronic structure of a nitrogen-doped graphite surface by scanning tunnelling microscopy, scanning tunnelling spectroscopy, X-ray photoelectron spectroscopy, and first-principles calculations. The…

The electronic properties of boron-nitride nanoribbons (BNNRs) doped with a line of carbon atoms are investigated by using density functional calculations. Three different configurations are possible: the carbon atoms may replace a line of…

介观与纳米尺度物理 · 物理学 2015-06-04 J. Beheshtian , A. Sadeghi , M. Neek-Amal , K. H. Michel , F. M. Peeters

With the global transition towards cleaner energy and sustainable processes, the demand for efficient catalysts, especially for the oxygen reduction reaction, has gained attention from the scientific community. This research work…

We model boron and nitrogen doped/codoped monolayer graphene to study its stability, interaction energy, electronic and thermal properties using density functional theory. It is found that a doped graphene sheet with non-bonded B or N atoms…

介观与纳米尺度物理 · 物理学 2020-03-18 Nzar Rauf Abdullah , Hunar Omar Rashid , Mohammad T. Kareem , Chi-Shung Tang , Andrei Manolescu , Vidar Gudmundsson

Two-dimensional graphene exhibits many fascinating properties such as ballistic electronic conduction and quantum Hall effect at room temperature.1-4 Graphene doped electrochemically or through charge-transfer with electron-donor and…

Two-dimensional alloys of carbon and nitrogen represent an urgent interest due to prospective applications in nanomechanical and optoelectronic devices. Stability of these chemical structures must be understood as a function of their…

材料科学 · 物理学 2015-02-09 Vitaly V. Chaban , Oleg V. Prezhdo

Energy barrier of oxygen molecule dissociation on carbon nanotube or graphene with different types of nitrogen doping is investigated using density functional theory. The results show that the energy barriers can be reduced efficiently by…

材料科学 · 物理学 2015-06-03 Shuang Ni , Zhenyu Li , Jinlong Yang

Boron-doped graphene was reported to be the best non-metal doped graphene electrocatalyst for the oxygen reduction reaction (ORR) working at an onset potential of 0.035 V [JACS 136 (2014) 4394]. In the present DFT study, intermediates and…

材料科学 · 物理学 2016-07-28 Gianluca Fazio , Lara Ferrighi , Cristiana Di Valentin

High-quality nitrogen-doped graphene on nickel is prepared by exploiting both the catalytic properties of nickel and the solubility of nitrogen atoms into its bulk. Following the standard chemical vapor deposition procedure, a previously…

Based on first principles density functional theory calculations we explored energetics of oxygen reduction reaction over pristine and nitrogen-doped graphene with different amounts of nitrogen doping. The process of oxygen reduction…

材料科学 · 物理学 2012-05-04 Danil W. Boukhvalov , Young-Woo Son

Since advanced Silicon-based device components are moderately chemically tunable, doped graphene has emerged as a promising candidate to replace this semiconducting material in flexible miniaturized electronic devices. Indeed, heteroatom…

材料科学 · 物理学 2022-10-27 Laura Caputo , Viet-Hung Nguyen , Jean-Christophe Charlier
‹ 上一页 1 2 3 10 下一页 ›