Electrospun nanofibrous membranes of cellulose acetate containing hydroxyapatite co-doped with Ag/Fe: morphological features, antibacterial and degradation of methylene blue from aqueous solutions

2021 ◽  
Author(s):  
Ahmed Esmail Shalan ◽  
M. Afifi ◽  
M.M. El-Desoky ◽  
M.k Ahmed
Keyword(s):  
Methylene Blue ◽  
Aqueous Solutions ◽  
Cellulose Acetate ◽  
Morphological Features ◽  
Molar Ratio ◽  
Electrospinning Technique ◽  
Nanofiber Membranes ◽  
Nanofibrous Membranes ◽  
Co Doped

Cellulose acetate nanofiber membranes containing hydroxyapatite co-doped with Ag/Fe were efficaciously attained through the electrospinning technique. Different molar ratio compositions of hydroxyapatite co-doped with Ag/Fe in the structure of the...

Preparation of Fe3+/Ag+ Co-Doped Nanometer TiO2 Photocatalyst with Sol - Gel Auto-Igniting Method

2011 ◽  
Vol 399-401 ◽  
pp. 1721-1724
Author(s):  
Zai Feng Shi ◽  
Shu Guo
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Water Samples ◽  
Sol Gel ◽  
Raw Material ◽  
Molar Ratio ◽  
Mercury Lamp ◽  
Tio2 Powder ◽  
Photodegradation Rate ◽  
Co Doped

To study the preparation of Fe3+/Ag+ co-doped TiO2 photocatalyst with sol-gel auto-igniting method, TiO2 powder was prepared with TiCl4 as raw material and the photocatalytic activity of doped TiO2 was examined with methylene blue (MB) as water samples, and a 15w low pressure mercury lamp as light source. Results showed that: the TiO2 co-doped with 0.02% (molar ratio) of Fe3+ and 0.5% (molar ratio) of Ag+ gives the highest photocatalytic activity. The according photodegradation rate constant of MB is 1.33 and 1.10 times of that with TiO2 and Fe/TiO2 separately.

FABRICATION AND PHOTOCATALYTIC PROPERTIES OF TiO2 NANOFILMS CO-DOPED WITH Fe3+ AND Bi3+ IONS

2016 ◽  
Vol 23 (02) ◽  
pp. 1550099
Author(s):  
QIONGZHI GAO ◽  
XIN LIU ◽  
WEI LIU ◽  
FANG LIU ◽  
YUEPING FANG ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Sol Gel ◽  
Dip Coating ◽  
Photocatalytic Properties ◽  
Molar Ratio ◽  
Coating Process ◽  
X Ray ◽  
Co Doped ◽  
Scanning Electron

In this work, the titanium dioxide ([Formula: see text]) nanofilms co-doped with [Formula: see text] and [Formula: see text] ions were successfully fabricated by the sol–gel method with dip-coating process. Methylene blue was used as the target degradation chemical to study the photocatalytic properties affected by different doping contents of [Formula: see text] and [Formula: see text] ions. The samples were characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM) and infrared (IR) spectroscopy. The results indicated that both pure [Formula: see text] nanofilms and single-doped samples possessed the photocatalytic activity in degradation of methylene blue. However, when the nanofilms co-doped with [Formula: see text] and [Formula: see text] ions were fabricated at the molar ratio of 3:1 ([Formula: see text]:[Formula: see text]), they exhibited the best photocatalytic activity after the heat treatment at [Formula: see text]C for 2[Formula: see text]h. The wettability property test indicated that the [Formula: see text] nanofilms co-doped with [Formula: see text] and [Formula: see text] ions in the molar ratio 3:1 owned an excellent hydrophilic property.

scholarly journals Multi-shelled ZnO decorated with nitrogen and phosphorus co-doped carbon quantum dots: synthesis and enhanced photodegradation activity of methylene blue in aqueous solutions

RSC Advances ◽  
2019 ◽  
Vol 9 (13) ◽  
pp. 7362-7374 ◽  
Author(s):  
Shaojia Song ◽  
Kun Wu ◽  
Huadong Wu ◽  
Jia Guo ◽  
Linfeng Zhang
Keyword(s):  
Methylene Blue ◽  
Quantum Dots ◽  
Aqueous Solutions ◽  
Human Health ◽  
Organic Dyes ◽  
Carbon Quantum Dots ◽  
Nitrogen And Phosphorus ◽  
Aquatic Life ◽  
Co Doped

The presence of organic dyes in wastewater has posed a huge threat to aquatic life and human health.

scholarly journals The Efficient Removal of Methylene Blue Dye Using CuO/PET Nanocomposite in Aqueous Solutions

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 241
Author(s):  
Suhad Abdulrahman Yasin ◽  
Samie Yaseen Sharaf Zeebaree ◽  
Aymn Yaseen Sharaf Zeebaree ◽  
Osama Ismail Haji Zebari ◽  
Ibtisam Abdulmajeed Saeed
Keyword(s):  
Electron Microscopy ◽  
Methylene Blue ◽  
Aqueous Solutions ◽  
High Surface ◽  
High Surface Area ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Electrospinning Technique ◽  
Energy Dispersion Spectroscopy ◽  
Pet Nanofiber

The present research investigates the application of the green method to produce nanocomposites. The CuO/PET fiber nanocomposite can be prepared in two ways. The first way involves the application of the electrospinning technique by which waste plastic cups of polyethylene terephthalate (PET) are converted into nanofibers. In the second way, the copper nanoparticle (CuONPs) is synthesized with the natural capped plant extract of sumac (Rhus Coriaria L., family Anacardiaceae) and the CuONPs are then combined as a filler with the PET nanofiber using a cross-linked solvent. The X-ray diffraction (XRD), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), energy dispersion spectroscopy (EDS), and map elements distribution can be applied to investigate the surface modification and alteration of the composite nanofiber morphology. The collected data show that the produced CuO/PET nanocomposites have a high surface area, well distribution of elements, magnificent shape, and stable dispersion state. Furthermore, the CuO/PET nanocomposites are considered as an efficient photocatalytic removal of the toxic methylene blue dye (MB) in aqueous solutions. The results of the present study demonstrate that the photocatalytic efficiency for removing MB dye is achieved in a short time using a low-intensity irradiation ultraviolet light.

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