Zinc complex formation of organic ligands on zinc oxide and titanium dioxide

Using spectrophotometric titration technique, the processes of complex formation of some phenylazo-derivatives of methylphloroglucinol (MPG) containing hydroxo-, nitro- and nitroso-substituents were studied. The spectral criteria of neutral and ionized forms of the organic ligands in their different tautomeric forms were determined.It was detected that the complex formation is accompanied by formation of one or two chelate cycles which involve azo- or nitroso-fragments and neighboring OH-groups of the organic ligands. Different types of coordination lead to different changes in the electronic absorption spectra.The DFT-B3LYP modeling of a Ni(II) complex of α-hydroxyphenylazo MPG established the most probable coordination mode of the organic ligand: tridentate chelating dianion, distorted square coordination of Ni-cations including one water molecule. The theoretical results are in a good accordance with the experimental data.

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Mycosynthesis of bimetallic zinc oxide and titanium dioxide nanoparticles for control of Spodoptera frugiperda

Pesticide Biochemistry and Physiology ◽

10.1016/j.pestbp.2021.104910 ◽

2021 ◽

pp. 104910

Author(s):

Jayaraman Kumaravel ◽

Kandhasamy Lalitha ◽

Murugan Arunthirumeni ◽

Muthugounder Subramanian Shivakumar

Keyword(s):

Zinc Oxide ◽

Titanium Dioxide ◽

Spodoptera Frugiperda ◽

Titanium Dioxide Nanoparticles

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ChemInform Abstract: THE CATALYTIC ACTIVITY FOR DEHYDROGENATION OF 2-PROPANOL AND BASICITY OF ZINC OXIDE-TITANIUM DIOXIDE BINARY SYSTEM

Chemischer Informationsdienst ◽

10.1002/chin.197816085 ◽

1978 ◽

Vol 9 (16) ◽

Author(s):

A. KUROSAKI ◽

S. OKAZAKI

Keyword(s):

Zinc Oxide ◽

Titanium Dioxide ◽

Catalytic Activity ◽

Binary System

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Complex formation in the course of synthesis of zinc oxide from citrate solutions

Russian Journal of Applied Chemistry ◽

10.1134/s1070427207110031 ◽

2007 ◽

Vol 80 (11) ◽

pp. 1798-1803 ◽

Cited By ~ 20

Author(s):

I. A. Farbun ◽

I. V. Romanova ◽

T. E. Terikovskaya ◽

D. I. Dzanashvili ◽

S. A. Kirillov

Keyword(s):

Zinc Oxide ◽

Complex Formation

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Effect of humic acids and sunlight on the cytotoxicity of engineered zinc oxide and titanium dioxide nanoparticles to a river bacterial assemblage

Journal of Environmental Sciences ◽

10.1016/s1001-0742(12)60271-x ◽

2013 ◽

Vol 25 (9) ◽

pp. 1925-1935 ◽

Cited By ~ 23

Author(s):

Thabitha P. Dasari ◽

Huey-Min Hwang

Keyword(s):

Zinc Oxide ◽

Titanium Dioxide ◽

Humic Acids ◽

Titanium Dioxide Nanoparticles ◽

Bacterial Assemblage

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Comparative absorption, distribution, and excretion of titanium dioxide and zinc oxide nanoparticles after repeated oral administration

Particle and Fibre Toxicology ◽

10.1186/1743-8977-10-9 ◽

2013 ◽

Vol 10 (1) ◽

pp. 9 ◽

Cited By ~ 196

Author(s):

Wan-Seob Cho ◽

Byeong-Cheol Kang ◽

Jong Kwon Lee ◽

Jayoung Jeong ◽

Jeong-Hwan Che ◽

...

Keyword(s):

Zinc Oxide ◽

Titanium Dioxide ◽

Oral Administration ◽

Zinc Oxide Nanoparticles ◽

Oxide Nanoparticles

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Photocatalytic Degradation of Textile Dyeing Wastewater Using Titanium Dioxide and Zinc Oxide

E-Journal of Chemistry ◽

10.1155/2008/876498 ◽

2008 ◽

Vol 5 (2) ◽

pp. 219-223 ◽

Cited By ~ 12

Author(s):

Abbas J. Attia ◽

Salih H. Kadhim ◽

Falah H. Hussein

Keyword(s):

Activation Energy ◽

Zinc Oxide ◽

Titanium Dioxide ◽

Photocatalytic Degradation ◽

Irradiation Time ◽

Effect Of Temperature ◽

Dyeing Wastewater ◽

Textile Dyeing ◽

Textile Factory ◽

Textile Dyeing Wastewater

Photodegradation of a real textile dyeing wastewater taken from Hilla textile factory in Babylon Governorate, Iraq have been investigated. Photocatalytic degradation was carried out over suspensions of titanium dioxide or zinc oxide under ultraviolet irradiation. Photodegradation percentage was followed spectrophometrically by the measurements of absorbance at λmax equal to 380 nm. The rate of photodegradation increased linearly with time of irradiation when titanium dioxide or zinc oxide was used. A maximum color removal of 96% was achieved after irradiation time of 2.5 hours when titanium dioxide used at 303K and 82% color reduction was observed when zinc oxide used for the same period and at the same temperature. The effect of temperature on the efficiency of photodegradation of dyestuff was also studied. The activation energy of photodegradation was calculated and found to be equal to 21 ± 1 kJ mol-1 on titanium dioxide and 24 ± 1 kJ mol-1 on zinc oxide.

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