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(TiO2)n(n=1~7)纳米团簇激发态性质的基准计算

Benchmarking calculations of the excited state properties of (TiO2)n(n=1~7) nanoparticles
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摘要 采用密度泛函(DFT)B3lyp方法在3-21G基组水平优化得到了(TiO2)n(n=1~7)团簇的基态稳定结构,并分析了每个团簇分子的电子云分布。在TZVP基组水平上,采用B3lyp、Cam-b3lyp和PBEPBE三种不同的泛函,计算了(TiO2)n (n=1~7)团簇的第一激发态的激发能、激发波长、振子强度。分析发现,激发态性质的计算对泛函的选择十分敏感。 Based on the 3-21 G basis set level,the geometric structures and electron density distribution of(TiO2)n(n=1~7)nanoparticles are calculated and analyzed using the density functional theory(DFT)B3lyp.The excitation energy,wavelength and oscillator strengths of the first excited states are also simulated using three different functions,including B3lyp、Cam-b3lyp and PBEPBE,based on the TZVP basis.The results showed that the excited state properties are sensitive to different functions.
作者 吴琪 霍炜 WU Qi;HUO Wei(Department of Physics,School of Science,Tibet University,Lhasa 850000,China)
机构地区 西藏大学理学院
出处 《高原科学研究》 CSCD 2019年第2期114-118,共5页 Plateau Science Research
基金 西藏自治区自科基金(2016ZR-TU-10) 2019年大学生创新创业项目(2019XCX008)
关键词 TiO2纳米团簇 电子结构 分子轨道 激发态 泛函 TiO2 nanoparticles Electronic structure Molecular orbital Excited state properties Functional
作者简介 第一作者简介:吴琪,女,汉族,山东济宁人,西藏大学理学院研究员,硕士生导师,主要研究方向为材料物理。
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  • 1李春森,曹泽星,吴玮,林梦海,张乾二.Pd_n(n=2~13)团簇的密度泛函理论研究[J].高等学校化学学报,2005,26(1):116-120. 被引量:14
  • 2袁喆,何春龙,王晓路,刘海涛,李家明.团簇的第一原理分子动力学计算研究:价键优选法[J].物理学报,2005,54(2):628-635. 被引量:11
  • 3郑青,周保学,白晶,蔡伟民,廖俊生.TiO_2纳米管阵列及其应用[J].化学进展,2007,19(1):117-122. 被引量:34
  • 4RUIZ A M, SAKAI G, CORNET A, et al. Microstructure control of thermally stable TiO2 obtained by hydrothermal process for gas sensors [J]. Sens Actuators B, 2004, 103(1-2): 312-317.
  • 5ALAM K M, SHAHEER A M, WOO S I, et al. Enhanced photoresponse under visible light in Pt ionized TiO2 nanotube for the photocatalytic splitting of water [J]. Catal Commun, 2008, 10( 1): 1-5.
  • 6ZHAO Q, LI M, CHU J Y, et al. Preparation, characterization of Au (or Pt)-loaded titania nanotubes and their photocatalytic activities for degradation of methyl orange [J]. Appl Surf Sci, 2009, 255(6): 3773-3778.
  • 7LIU Z J, ZHANG Q, QIN L C. Reduction in the electronic band gap of titanium oxide nanotubes [J]. Solid State Commun, 2007, 141(3): 168-171.
  • 8BANDURA A V, EVARESTOV R A. From anatase (101) surface to TiO2 nanotubes: Rolling procedure and first principles LCAO calculations [J]. Surf Sci, 2009, 603(18): L117-L120.
  • 9VANDERBILT D. Soft self-consistent pseudopotentials in a generalized eigenvalue formalism [J]. Phys Rev B, 1990, 41(11): 7892-7895.
  • 10MONKHORST H J, PACK J D. Special points for Brillouin-zone integrations [J]. Phys Rev B, 1976, 13(12): 5188-5192.

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