The XRD peaks slightly move to a low angle and the Raman strongest peak shifts positively owing to oxygen vacancy and Ti. The energy bandgap of G-TiO2 and B-TiO2 is tuned from 3.10 to 3.02 and 1.99 eV. The content of oxygen vacancy is 1%, 4.8% and 7.8% for W-TiO2, G-TiO2 and ...
Juan Li, Lin Zhang, Xingda An, Kai Feng, Xuchun Wang, Jiari He, Yang Huang, Jingjing Liu, Liang Zhang, Binhang Yan, Chaoran Li, Le He, Tuning Adsorbate-Mediated Strong Metal-Support Interaction by Oxygen Vacancy: A Case Study in...
摘要: 为了研究TiO2氧空位形成的影响因素,用管式电阻炉在空气、Ar及不同温度下对TiO2烧结.采用扫描电子显微镜(SEM)、X射线衍射(XRD)和X射线光电子能谱(XPS)对烧结TiO2样品的微观形貌、物相组成、元素及价态进行了表征,研究了烧结温度、烧结气氛和Ar+刻蚀对TiO2样品氧空位形成的影响.结果表明:相同气氛下,随着烧结温...
Absence of sharp peak in XRD patterns represents amorphous phase of TiO2thin films41. After plasma treatment 2θ angle and FWHM of the peaks remain almost unchanged, indicating negligible effect on the film structure. XRD indicates that plasma treatment does not create any change in the crystal ...
In this paper, TiO2 was prepared by sol-gel method, and TiO2 with oxygen vacancies was prepared by hydrothermal reduction. The properties of the product were characterized by UV-Vis DRS,XRD, and Raman spectroscopy and electrochemical workstation. The photocatalytic activity of TiO2 with oxygen ...
which shows that these levels of nitrogen-doping do not cause major structural change. Despite the failure to detect bulk structural change by XRD, there are clearly indications that oxygen-vacancy formation is facilitated by nitrogen-doping at low nitrogen content. In order to detect changes in ...
Dramatic promotion of visible-light photoreactivity of TiO2 hollow microspheres towards no oxidation by introduction of oxygen vacancy. Appl Catal B-Environ, 2019, 256: 117860 34 Cao Y, Wu T, Dai W, et al. TiO2 nanosheets with Au nanocrystals decorated edge for mitochondria-targeting enhanced ...
Single-phase Ti1xMnxO2 films with x=0–8% were synthesized by plasma-assisted molecular beam epitaxy (PAMBE), and the effect of Mn content on the magnetic behaviors has been systemically investigated. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) studies indicate no Mn ...
Thus, the presence of Ti3 + and oxygen vacancy defects in rGO/TiO2-7ArH is verified. The C 1s spectrum was deconvoluted into three peaks, including the sp2-C bonds of graphene (284.1eV), sp3-hybridized carbons (C-C/ C-H, 284.5 eV) and alcohol, epoxy, and ether groups (C-O,...
While the migration of the ionized oxygen vacancy (IOV) has been established as the most effective cause of resistance variation in these devices5,29–34, it has been shown that the motions of all cations, including those originating from the electrodes, can determine the main conduction ...