Surface oxygen vacancy assisted electron transfer and shuttling for enhanced photocatalytic activity of a Z-scheme CeO2–AgI nanocomposite

RSC Advances ◽  
2016 ◽  
Vol 6 (23) ◽  
pp. 19341-19350 ◽  
Author(s):  
M. Jahurul Islam ◽  
D. Amaranatha Reddy ◽  
Jiha Choi ◽  
Tae Kyu Kim
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Oxygen Vacancy ◽  
Surface Oxygen ◽  
Photocatalytic Mechanism ◽  
Surface Oxygen Vacancy

A Z-scheme CeO2–AgI photocatalyst was successfully fabricated and its photocatalytic mechanism has been unraveled.

Distribution and concentration of surface oxygen vacancy of TiO2 and its photocatalytic activity

2020 ◽  
Vol 53 (42) ◽  
pp. 424001
Author(s):  
Tianqi Cao ◽  
Tianyu Xia ◽  
Liang Zhou ◽  
Guoqiang Li ◽  
Xing Chen ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Oxygen Vacancy ◽  
Surface Oxygen ◽  
Surface Oxygen Vacancy

Surface oxygen-vacancy induced photocatalytic activity of La(OH)3 nanorods prepared by a fast and scalable method

2015 ◽  
Vol 17 (24) ◽  
pp. 16058-16066 ◽  
Author(s):  
Fan Dong ◽  
Xiang Xiao ◽  
Guangming Jiang ◽  
Yuxin Zhang ◽  
Wen Cui ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Oxygen Vacancy ◽  
Surface Oxygen ◽  
One Dimensional ◽  
Surface Oxygen Vacancy

Uniform one-dimensional La(OH)3 nanorods with surface oxygen-vacancy induced photocatalytic activity were synthesized by a facile, fast and scalable method.

scholarly journals Visible Light Driven Spherical CuBi2O4 with Surface Oxygen Vacancy Enhanced Photocatalytic Activity: Catalyst Fabrication, Performance, and Reaction Mechanism

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 945
Author(s):  
Xin Zhong ◽  
Yihong Cai ◽  
Heping Bai ◽  
Wei Huang ◽  
Binxue Zhou
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Oxygen Vacancy ◽  
Visible Light ◽  
Photoelectron Spectroscopy ◽  
Interface Reaction ◽  
Surface Oxygen ◽  
X Ray ◽  
Valence States ◽  
Surface Oxygen Vacancy

Here, a spherical CuBi2O4 catalyst with surface oxygen vacancy was fabricated through a facile hydrothermal method, which exhibited remarkable enhanced photocatalytic activity of refractory chemicals in the heterogeneous sulfate radical-based Fenton-like reaction under visible light emitting diode (LED) light irradiation. The property of the catalysts was systematically characterized by scanning electron microscopy (SEM)/high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV/vis methods. The effects of parameters of solution pH, potassium peroxymonosulfate (PMS) concentration, catalyst dosage, and catalyst reusability on Rhodamine B (RhB) degradation were investigated. In the interface reaction, the improved photodegradation efficiency could be attributed to the decomposition of PMS, which produced sulfate radicals and hydroxyl radicals owing to the transmission of photo-generated electron/hole pairs. Herein, the introduction of surface oxygen vacancy as well as the cycling of copper valence states (Cu(II)/Cu(I) pairs) can facilitate the production of free reactive radicals, leading to the high degradation efficiency. The catalyst showed high removal efficiency and presented good cycle stability in the reaction. Additionally, the free radical quencher experiment and electron spin resonance (EPR) experiments were conducted, and a proposed photocatalytic mechanism was also illustrated.

In situ synthesis of Cl-doped Bi2O2CO3 and its enhancement of photocatalytic activity by inducing generation of oxygen vacancies

2020 ◽  
Vol 7 (16) ◽  
pp. 2969-2978
Author(s):  
Jie-hao Li ◽  
Jie Ren ◽  
Ying Liu ◽  
Hui-ying Mu ◽  
Rui-hong Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Ionic Liquids ◽  
Oxygen Vacancy ◽  
Oxygen Vacancies ◽  
In Situ Synthesis ◽  
Photocatalytic Mechanism

Cl-Doped Bi2O2CO3 is prepared using ionic liquids as dopants and the oxygen-vacancy-induced photocatalytic mechanism is revealed.

Surface oxygen vacancy engineering and physical protection by in-situ carbon coating process of lithium rich layered oxide

2021 ◽  
Vol 515 ◽  
pp. 230623
Author(s):  
Vasu Shanmugam ◽  
Sasikala Natarajan ◽  
Laurel Simon Lobo ◽  
Ankita Mathur ◽  
Moodakare B. Sahana ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Carbon Coating ◽  
Coating Process ◽  
Surface Oxygen ◽  
Physical Protection ◽  
Layered Oxide ◽  
Surface Oxygen Vacancy
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