Single-crystalline Bi2Fe4O9 synthesized by low-temperature co-precipitation: performance as photo- and Fenton catalysts

RSC Advances ◽  
2014 ◽  
Vol 4 (53) ◽  
pp. 27820-27829 ◽  
Author(s):  
Zhong-Ting Hu ◽  
Bo Chen ◽  
Teik-Thye Lim
Keyword(s):  
Low Temperature ◽  
Bisphenol A ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Light Irradiation ◽  
Single Crystalline ◽  
Oxidation Processes ◽  
Co Precipitation

A multi-functional self-assembled (001) Bi2Fe4O9 nanopad was firstly synthesized by co-precipitation at 95 °C, which can drive hybrid advanced oxidation processes (HAOPs) under visible-light irradiation for the efficient degradation of bisphenol A.

scholarly journals Comparison of Various Advanced Oxidation Processes for the Degradation of Bisphenol A

2017 ◽  
pp. 147
Author(s):  
Naser Jamshidi ◽  
Farzad Nezhad Bahadori ◽  
Ladan Talebiazar ◽  
Ali Akbar Azimi
Keyword(s):  
Bisphenol A ◽  
Uv Irradiation ◽  
Advanced Oxidation Processes ◽  
Irradiation Time ◽  
Advanced Oxidation ◽  
Chemical Oxidation ◽  
Photochemical Oxidation ◽  
Input Concentration ◽  
Oxidation Processes ◽  
Ph Range

Today, advanced oxidation processes (AOPs) is considered as a key and effective method for environment preservation from pollutions. In this study , advanced photochemical oxidation processes using O3/H2O2 and O3/H2O2/UV systems were investigated batch photolytic reactor in lab-scale for the degradation of bisphenol A (BPA). In ozone generator source, air, as of the initial instrument feed, changes to ozone after electrical action and reaction. The UV irradiation source was a medium-pressure mercury lamp 300 W that was immerse in the wastewater solution with in 1.5 liter volume reactor. The reaction was influenced by the pH, the input concentration of H2O2, the input concentration of BPA, ozone dosage, chemical oxidation demand (COD) and UV irradiation time. Results showed that at initial bisphenol A concentration of 100 mg/l will completely degrade after 60 minutes by using O3/H2O2 in the pH range from 9.8 to 10 and by adding UV, it will happen in less than 36 minutes in the pH range of 3 to 10. The O3/H2O2/UV process reduced COD to 75 percents.

scholarly journals MOF-Derived Porous Fe2O3 Nanoparticles Coupled with CdS Quantum Dots for Degradation of Bisphenol A under Visible Light Irradiation

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1701 ◽  
Author(s):  
Ruowen Liang ◽  
Zhoujun He ◽  
Chen Zhou ◽  
Guiyang Yan ◽  
Ling Wu
Keyword(s):  
Quantum Dots ◽  
Bisphenol A ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
High Performance ◽  
Energy Levels ◽  
Light Irradiation ◽  
Cds Quantum Dots ◽  
Endocrine Disrupting Chemical ◽  
Cds Qds

In this work, CdS quantum dots (QDs) were planted on magnetically recyclable porous Fe2O3 (denoted as F450) to obtain CdS QDs/porous Fe2O3 hybrids (denoted as X–CdS/F450, in which X is the immersion times of CdS QDs). Porous Fe2O3 was first obtained by pyrolysis from an iron-containing metal–organic framework by a two-step calcination method. Next, CdS QDs (of average size 3.0 nm) were uniformly and closely attached to the porous F450 via a sequential chemical-bath deposition strategy. As expected, the X–CdS/F450 hybrids serve as high-performance photocatalysts for the degradation of bisphenol A, a typical endocrine-disrupting chemical. Almost ∼100% of the bisphenol A was degraded over 5-CdS/F450 after visible light irradiation for 30 min (λ ≥ 420 nm). In comparison, the degradation efficiency of pure F450 powder is 59.2%. The high performance of 5-CdS/F450 may be ascribable to the fast electron transport of porous F450, the intense visible-light absorption of the CdS QDs and the matched energy levels between CdS and F450. More significantly, through the photocatalytic degradation reaction, the X–CdS/F450 hybrids can easily be recovered magnetically and reused in subsequent cycles, indicating their stability and recyclability.

Novel MoSe2 hierarchical microspheres for applications in visible-light-driven advanced oxidation processes

Nanoscale ◽  
2015 ◽  
Vol 7 (47) ◽  
pp. 19970-19976 ◽  
Author(s):  
Chu Dai ◽  
Enping Qing ◽  
Yong Li ◽  
Zhaoxin Zhou ◽  
Chao Yang ◽  
...  
Keyword(s):  
Visible Light ◽  
Self Assembly ◽  
Advanced Oxidation Processes ◽  
Three Dimensional ◽  
Advanced Oxidation ◽  
Oxidation Processes ◽  
Hierarchical Microspheres ◽  
Molybdenum Diselenide ◽  
Visible Light Driven

Self-assembly of three-dimensional molybdenum diselenide hierarchical microspheres and their visible-light-driven advanced oxidation processes.

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