scholarly journals Surfactant and natural sunlight enhanced Photogalvanic effect of Sudan I dye

2017 ◽  
Vol 10 (8) ◽  
pp. 1077-1083 ◽  
Author(s):  
Pooran Koli
Keyword(s):  
Photogalvanic Effect ◽  
Natural Sunlight ◽  
Sudan I

Synthesis of ZnO/ZnFe2O4 nanocomposites in organic-free media and their photocatalytic activity under natural sunlight

2020 ◽  
Vol 14 (2) ◽  
pp. 6801-6810
Author(s):  
Rahmayeni Rahmayeni ◽  
Zulhadjri Zulhadjri ◽  
Yeni Stiadi ◽  
Agusnar Harry ◽  
Syukri Arief
Keyword(s):  
Electron Microscopy ◽  
Hexagonal Wurtzite Structure ◽  
Rice Grain ◽  
X Ray Diffraction ◽  
Homogeneous Sphere ◽  
Natural Sunlight ◽  
Transmission Electron ◽  
Photocatalytic Activities ◽  
Free Media ◽  
Photocatalytic Applications

Nanocomposite ZnO/ZnFe2O4 photocatalysts with different proportions of ZnFe2O4 were synthesized in organic-free media using metal nitric as precursors. The ZnO phase with hexagonal wurtzite structure and low crystallinity of ZnFe2O4 was confirmed using XRD (X-Ray diffraction). Different morphologies of the nanocomposites were obtained ranging from rice grain-like with a porous surface to homogeneous sphere-like nanoparticles as shown in Scanning Electron Microscopy (SEM) and TEM Transmission Electron Microscopy (TEM) studies. Magnetic properties measured by Visible Sampler Magnetometer (VSM) showed diamagnetic and paramagnetic behavior for the nanocomposites. Analysis with Diffuse Reflectance Spectrophotometer (DRS) UV-vis showed an increase the composition of ferrite in composites increasing its ability to absorb visible light. Photocatalytic activities of ZnO/ZnFe2O4 nanocomposites on the degradation of Rhodamine B dye reached 95.6% after 3 h under natural sunlight suggesting their suitability for sunlight driven photocatalytic applications. 

Photocatalytic Degradation of 4-Nitrophenol Under Natural Sunlight with Ti-Zn Bimetallic Photocatalyst

2018 ◽  
Vol 8 (4) ◽  
pp. 642-647
Author(s):  
Manohari J ◽  
Hima Bindu G ◽  
Divya Jyothi K ◽  
Vamsi Kumar Y
Keyword(s):  
Photocatalytic Degradation ◽  
Natural Sunlight

Enzymes Oxidizing the Azo Dye 1-Phenylazo-2-Naphthol (Sudan I) and their Contribution to its Genotoxicity and Carcinogenicity

2015 ◽  
Vol 15 (8) ◽  
pp. 829-840 ◽  
Author(s):  
Marie Stiborova ◽  
Heinz Schmeiser ◽  
Eva Frei ◽  
Petr Hodek ◽  
Vaclav Martinek
Keyword(s):  
Azo Dye ◽  
Sudan I

Ce(IV)-mediated formation of benzenediazonium ion from a non-aminoazo dye, 1-phenylazo-2-hydroxy-naphthalene (Sudan I) and its binding to DNA

1989 ◽  
Vol 54 (7) ◽  
pp. 2021-2026
Author(s):  
Marie Stiborová ◽  
Befekadu Asfaw ◽  
Pavel Anzenbacher
Keyword(s):  
Azo Dyes ◽  
Acidic Medium ◽  
Model System ◽  
Calf Thymus Dna ◽  
Suitable Model ◽  
Principal Product ◽  
Calf Thymus ◽  
Sudan I ◽  
A Minor

Ce(IV) ions in acidic medium convert a carcinogenic non-aminoazo dye, 1-phenylazo-2-hydroxy-naphthalene (Sudan I) into an ultimate carcinogen, which binds to calf thymus DNA. The principal product of Sudan I oxidation by the Ce(IV) system is the benzenediazonium ion. A minor product is the dihydroxyderivative of Sudan I, 1-(4-hydroxyphenylazo)-2,6-dihydroxynaphthalene. Other minor coloured products (yellow and brown) were not identified. The principal product (the benzenediazonium ion) is responsible for the carcinogenicity of Sudan I, as it covalently binds to DNA. Ce(IV) ions in acidic medium represent a suitable model system, which imitates the activation route of carcinogenic azo dyes.

Electrochemical sensing of Sudan I using the modified graphite screen-printed electrode

2020 ◽  
pp. 1-14
Author(s):  
Somayeh Tajik ◽  
Hadi Beitollahi ◽  
Fariba Garkani Nejad ◽  
Mohadeseh Safaei ◽  
Peyman Mohammadzadeh Jahani
Keyword(s):  
Electrochemical Sensing ◽  
Screen Printed Electrode ◽  
Sudan I ◽  
Screen Printed

Chirality‐Dependent Circular Photogalvanic Effect in Enantiomorphic 2D Organic–Inorganic Hybrid Perovskites

2021 ◽  
Vol 33 (17) ◽  
pp. 2008611
Author(s):  
Po‐Jung Huang ◽  
Kouji Taniguchi ◽  
Masato Shigefuji ◽  
Takatsugu Kobayashi ◽  
Masakazu Matsubara ◽  
...  
Keyword(s):  
Photogalvanic Effect ◽  
Inorganic Hybrid

An electrically switchable anti-ferroelectric bilayer In2Se3 based opto-spintronic device

Nanoscale ◽  
2021 ◽  
Author(s):  
Yaqing Yang ◽  
Liwen Zhang ◽  
Jun Chen ◽  
Xiaohong Zheng ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Photogalvanic Effect ◽  
Spintronic Device

The spin dependent photocurrent can be generated via the photogalvanic effect and largely tuned in an anti-ferroelectric bilayer In2Se3 based opto-spintronic device.

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