Mechanistical investigation on the self-enhanced photocatalytic activity of CuO/Cu2O hybrid nanostructures by density functional theory calculations

2016 ◽  
Vol 18 (40) ◽  
pp. 27967-27975 ◽  
Author(s):  
Feiyu Diao ◽  
FengHui Tian ◽  
Wenshuang Liang ◽  
Honglei Feng ◽  
Yiqian Wang

The photocatalytic mechanism of a Cu2O/CuO hybrid system is investigated by density functional theory calculations.

RSC Advances ◽  
2015 ◽  
Vol 5 (76) ◽  
pp. 61495-61501 ◽  
Author(s):  
Ning Wang ◽  
Tao Jiang ◽  
Yanqiu Yang ◽  
Jie Tian ◽  
Sheng Hu ◽  
...  

The self-diffusion in liquid U–10Zr alloy obeyed the Arrhenius activation process; the linear correlation coefficient was about 0.98.


2015 ◽  
Vol 17 (14) ◽  
pp. 8994-9000 ◽  
Author(s):  
Junying Zhang ◽  
Wenqiang Dang ◽  
Zhimin Ao ◽  
Scott K. Cushing ◽  
Nianqiang Wu

NS co-existing with VO in La2Ti2O7 narrows the band gap and removes the localized energy state, leading to a strong visible light photocatalytic activity and enhancement of the UV performance.


2021 ◽  
Vol 23 (11) ◽  
pp. 6632-6640
Author(s):  
Yanqing Guo ◽  
Meng Xia ◽  
Mingkun Zhang ◽  
Jing Zou ◽  
Yue You ◽  
...  

The sulphur-doping strategy was proposed to enhance the incorporation of single Pt atoms in monolayer graphitic carbon nitride and the density functional theory calculations verified it has superb photocatalytic activity.


2006 ◽  
Vol 71 (11-12) ◽  
pp. 1525-1531 ◽  
Author(s):  
Wojciech Grochala

The enthalpy of four polymorphs of CaN has been scrutinized at 0 and 100 GPa using density functional theory calculations. It is shown that structures of diamagnetic calcium diazenide (Ca2N2) are preferred over the cubic ferromagnetic polymorph (CaN) postulated before, both at 0 and 100 GPa.


2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Chih-Chuen Lin ◽  
Phani Motamarri ◽  
Vikram Gavini

AbstractWe present a tensor-structured algorithm for efficient large-scale density functional theory (DFT) calculations by constructing a Tucker tensor basis that is adapted to the Kohn–Sham Hamiltonian and localized in real-space. The proposed approach uses an additive separable approximation to the Kohn–Sham Hamiltonian and an L1 localization technique to generate the 1-D localized functions that constitute the Tucker tensor basis. Numerical results show that the resulting Tucker tensor basis exhibits exponential convergence in the ground-state energy with increasing Tucker rank. Further, the proposed tensor-structured algorithm demonstrated sub-quadratic scaling with system-size for both systems with and without a gap, and involving many thousands of atoms. This reduced-order scaling has also resulted in the proposed approach outperforming plane-wave DFT implementation for systems beyond 2000 electrons.


2021 ◽  
Vol 60 (8) ◽  
pp. 6016-6026
Author(s):  
Aydar Rakhmatullin ◽  
Maxim S. Molokeev ◽  
Graham King ◽  
Ilya B. Polovov ◽  
Konstantin V. Maksimtsev ◽  
...  

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