Showing 101 - 120 results of 431 for search '"density functional theory"', query time: 0.09s Refine Results
  1. 101

    Dual Role of Fe2+ in the Galena Flotation and Influence on Selective Separation by Bo Yang, Xiao Wang, Xian Xie, Zixuan Yang

    Published 2023-01-01
    “…XPS surface analysis suggested that the surface oxidation of galena was alleviated by the consumption of O2 in the pulp, which reduced the adsorption of the collector KBX on and the oxidation of xanthates to dixanthogens. Density functional theory (DFT) calculations confirmed that the ferrous hydroxyl complex FeOH+ could be adsorbed on the galena surface by interactions between Fe and S atoms.…”
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  2. 102

    Optical Absorption and Electron Injection of 4-(Cyanomethyl)benzoic Acid Based Dyes: A DFT Study by Yuehua Zhang, Penghui Ren, Yuanzuo Li, Runzhou Su, Meiyu Zhao

    Published 2015-01-01
    “…Density functional theory (DFT) and time-dependent density functional theory (TDDFT) calculations were carried out to study the ground state geometries, electronic structures, and absorption spectra of 4-(cyanomethyl)benzoic acid based dyes (AG1 and AG2) used for dye-sensitized solar cells (DSSCs). …”
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  3. 103

    Quinoline-Based Materials: Spectroscopic Investigations as well as DFT and TD-DFT Calculations by Mahmoud A. S. Sakr, Samy A. El-Daly, El-Zeiny M. Ebeid, Sadeq M. Al-Hazmy, Mohammed Hassan

    Published 2022-01-01
    “…The absorption and emission spectra of studied compounds were measured within the laboratory, whereas the quantum calculations were performed utilizing the density functional theory (DFT) calculations. Additionally, the time-dependent density functional theory (TD-DFT) was applied for the comparison of some sensible results with the theoretical ones. …”
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  4. 104

    Femtosecond laser induced ultrafast interface dynamics between single layer graphene and quartz substrate: A theoretical study by Runping Zhao, Xia Wang, Lei Wang

    Published 2025-01-01
    “…In recent years, density functional theory (DFT) has been used to investigate the graphene–SiO2 interaction in ground states. …”
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  5. 105

    Theoretical Study on the Photoelectric Properties of a Class of Copolymers Based on Benzodithiophene for Solar Cells by Xiao-Hua Xie, Xin-Wei Zhao, Ming Li

    Published 2018-01-01
    “…The structural, electronic, and optical properties of PBDTTBT are comprehensively studied by density functional theory to rationalize the experimentally observed properties. …”
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  6. 106

    Cyanidin-Based Novel Organic Sensitizer for Efficient Dye-Sensitized Solar Cells: DFT/TDDFT Study by Kalpana Galappaththi, Andery Lim, Piyasiri Ekanayake, Mohammad Iskandar Petra

    Published 2017-01-01
    “…The molecular geometries, electronic structures, absorption spectra, and electron injections of the newly designed organic sensitizer were investigated in this work through density functional theory (DFT) and time-dependent density functional theory (TDDFT) calculations using the Gaussian’09W software package. …”
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  7. 107

    A Study of the Electronic Absorption and Emission Spectra of DBDMA Dye: Solvent Effect, Energy Transfer, and Fluorescence Quenching by Sadeq M. Al-Hazmy, Jameelah Al-Harby, Mohammed Hassan, Sabri Messaoudi, Ibrahim A. Alhagri, Ahmed N. Alhakimi

    Published 2023-01-01
    “…Geometries of ground and excited states were optimized using the density functional theory (DFT) and the time-dependent density functional theory (TD-DFT), respectively. …”
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  8. 108

    DFT Modelling of Tripeptides (Lysine-Tryptophan-Lysine) Interacting with Single Walled Carbon Nanotubes by Navaratnarajah Kuganathan

    Published 2010-01-01
    “…Model calculations are performed to predict the nature of interaction between SWNT and a tripeptide (Lys-Trp-Lys) and to calculate the binding energies and charge transfer between these two species using density functional theory. DFT calculations indicate that the interaction is of a non covalent nature. …”
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  9. 109

    Structure of Hybrid Interpolymeric Complexes of Polyvinyl Alcohol and Halides of Second Group Elements by I. Yu. Prosanov, E. Benassi

    Published 2017-01-01
    “…Density functional theory was used to investigate structure and properties of polyvinyl alcohol complexes with halides of second group elements XHal2 (X = Be, Mg, Ca, Zn, Sr, Cd, Ba, and Hg; Hal = F, Cl, Br, and I). …”
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  10. 110

    Artificial intelligence-driven phase stability evaluation and new dopants identification of hafnium oxide-based ferroelectric materials by Shaoan Yan, Pei Xu, Gang Li, Yuchun Li, Yingfang Zhu, Xiaona Zhu, Qiong Yang, Meng Li, Minghua Tang, Hongliang Lu, Sen Liu, Qingjiang Li, David Wei Zhang, Zhigang Chen

    Published 2025-01-01
    “…Abstract In this work, a multi-stage material design framework combining machine learning techniques with density functional theory is established to reveal the mechanism of phase stabilization in HfO2 based ferroelectric materials. …”
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  11. 111

    Tautomerism in 11-Hydroxyaklavinone: A DFT Study by Lemi Türker

    Published 2012-01-01
    “…Of these tautomeric forms, presently the one involving the anthraquinone based tautomers of 11-hydroxyaklavinone has been investigated quantum chemically in the framework of the density functional theory at the levels of RB3LYP/6-31G(d) and RB3LYP/6-31G(d,p).…”
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  12. 112

    Electronic and Lattice Dynamical Properties of the Iron-Based Superconductors LiFeAs and NaFeAs by R. A. Jishi, H. M. Alyahyaei

    Published 2010-01-01
    “…The electronic structure and lattice vibrational frequencies of the newly discovered superconductors, LiFeAs and NaFeAs, are calculated within density functional theory. We show that, in the vicinity of the Fermi energy, the density of states is dominated by contributions from Fe 3d states. …”
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  13. 113

    DFT Study on Adiabatic and Vertical Ionization Potentials of Graphene Sheets by Igor K. Petrushenko

    Published 2015-01-01
    “…Adiabatic and vertical ionization potentials (IPs) of finite-size graphene sheets as a function of size were determined by using density functional theory. In the case of graphene a very moderate gap between vertical and adiabatic IPs was observed, whereas for coronene molecule as a model compound these values differ considerably. …”
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  14. 114

    The Indigo Molecule Revisited Again: Assessment of the Minnesota Family of Density Functionals for the Prediction of Its Maximum Absorption Wavelengths in Various Solvents by Francisco Cervantes-Navarro, Daniel Glossman-Mitnik

    Published 2013-01-01
    “…The Minnesota family of density functionals (M05, M05-2X, M06, M06L, M06-2X, and M06-HF) were evaluated for the calculation of the UV-Vis spectra of the indigo molecule in solvents of different polarities using time-dependent density functional theory (TD-DFT) and the polarized continuum model (PCM). …”
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  15. 115

    Fourier Transform Infrared Spectroscopy of “Bisphenol A” by Ramzan Ullah, Ishaq Ahmad, Yuxiang Zheng

    Published 2016-01-01
    “…Absorption peaks (400–4000 cm−1) are assigned on the basis of Density Functional Theory (DFT) with configuration as B3LYP 6-311G++ (3df 3pd). …”
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  16. 116

    Theoretical Study of CO Adsorption on Perfect and Defective Gold Surfaces by Yingying Wang, Bing Xu, Wanyi Shen

    Published 2013-09-01
    “…The activities of Au(111), Au(100) and Au(110) surfaces, as well as the activity of an Au adatom on Au(111), Au(100) and Au(110) surfaces have been characterized by density functional theory using CO as a probe. The results clearly show that the activity of Au surfaces towards CO adsorption is attributable to the presence of low-coordinated gold atoms to which the molecule binds. …”
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  17. 117

    Predicting the adsorption of -perfluorohexane (-CF) on BAM-P109 activated carbon using an force field by Fenglei Cao, Zhifeng Jing, Huai Sun

    Published 2016-02-01
    “…The force field parameters were derived from data calculated using quantum mechanics density functional theory with dispersion energy correction, and the total adsorption amount was calculated as the sum of the adsorption amounts of microscopic and mesoscopic pores. …”
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  18. 118

    Electronic Structure and Optical Properties of GaAs1-xBix Alloy by Xindong You, Renjie Zhou

    Published 2014-01-01
    “…The simulations are based upon the generalized gradient approximation (GGA) within the framework of density functional theory (DFT). Calculations are performed to different Bi concentrations. …”
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  19. 119

    Structural, Electronic, Mechanical and Optical Properties of RhZrZ (Z = As, Sb) Half-Heusler Compounds: First-Principles Calculations by Adem Beriso Bejo, Megersa Wodajo Shura, Mesfin Asfaw Afrassa, Kumneger Tadele, Fekadu Tolessa Marem, Kunsa Haho Habura

    Published 2024-01-01
    “…In this study, density functional theory (DFT) as it is implemented in the Quantum Espresso simulation package was employed to investigate the structural, electronic, mechanical and optical properties of RhZrZ (Z = As, Sb) half-Heusler compounds. …”
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  20. 120

    Correlation between Quantumchemically Calculated LUMO Energies and the Electrochemical Window of Ionic Liquids with Reduction-Resistant Anions by Wim Buijs, Geert-Jan Witkamp, Maaike C. Kroon

    Published 2012-01-01
    “…Surprisingly simple but very fast semiempirical calculations are in full record with density functional theory calculations and are a very attractive tool in the design and optimization of ionic liquids for specific purposes.…”
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