Band gap modified zinc oxide nanoparticles: an efficient visible light active catalyst for wastewater treatment

2020 ◽  
Author(s):  
S. S. Sharma ◽  
S. Palaty ◽  
A. K. John
Keyword(s):  
Zinc Oxide ◽  
Wastewater Treatment ◽  
Visible Light ◽  
Band Gap ◽  
Zinc Oxide Nanoparticles ◽  
Active Catalyst ◽  
Oxide Nanoparticles ◽  
Visible Light Active

Microbiote shift in sequencing batch reactors in response to antimicrobial ZnO nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 110108-110111 ◽  
Author(s):  
Zhenghui Liu ◽  
Huifang Zhou ◽  
Jiefeng Liu ◽  
Xudong Yin ◽  
Yufeng Mao ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Wastewater Treatment ◽  
Adverse Effects ◽  
Zno Nanoparticles ◽  
Zinc Oxide Nanoparticles ◽  
Wastewater Treatment Plants ◽  
Oxide Nanoparticles ◽  
Batch Reactors ◽  
Sequencing Batch Reactors ◽  
Zno Nps

Zinc oxide nanoparticles (ZnO NPs) have been monitored in wastewater treatment plants as their potential adverse effects on functional microorganisms have been causing increasing concern.

High-pressure zinc oxide phase as visible-light-active photocatalyst with narrow band gap

2017 ◽  
Vol 5 (38) ◽  
pp. 20298-20303 ◽  
Author(s):  
Hadi Razavi-Khosroshahi ◽  
Kaveh Edalati ◽  
Ji Wu ◽  
Yuki Nakashima ◽  
Makoto Arita ◽  
...  
Keyword(s):  
High Pressure ◽  
Zinc Oxide ◽  
Visible Light ◽  
Band Gap ◽  
Narrow Band ◽  
Oxide Phase ◽  
Visible Light Active

High-pressure rocksalt ZnO with a band gap of 1.8 eV, which can absorb visible light.

Enhanced visible-light photocatalytic activity of strontium-doped zinc oxide nanoparticles

2015 ◽  
Vol 32 ◽  
pp. 152-159 ◽  
Author(s):  
Ramin Yousefi ◽  
Farid Jamali-Sheini ◽  
Mohsen Cheraghizade ◽  
Sara Khosravi-Gandomani ◽  
Abdolhossein Sáaedi ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

scholarly journals The Influence of Calcination Temperature on the Formation of Zinc Oxide Nanoparticles by Thermal-Treatment

2013 ◽  
Vol 446-447 ◽  
pp. 181-184 ◽  
Author(s):  
Naif Mohammed Al-Hada ◽  
Elias Saion ◽  
A.H. Shaari ◽  
M.A. Kamarudin ◽  
Salahudeen A. Gene
Keyword(s):  
Particle Size ◽  
Zinc Oxide ◽  
Thermal Treatment ◽  
Band Gap ◽  
Calcination Temperature ◽  
Zinc Oxide Nanoparticles ◽  
Treatment Method ◽  
Band Gap Energy ◽  
Oxide Nanoparticles ◽  
Gap Energy

Zinc oxide nanoparticles were synthesized by the thermal-treatment method. Polyvinyl pyrrolidone was used as capping agent and Zinc nitrate was used as a precursor. The samples were calcined at 500 and 550°C for removal of the organic compounds. The structural characteristics of the calcined samples were examined by X-ray diffraction and transmission electron microscopy. The results show that the average particle size increases with increase in calcination temperature. The optical properties were characterized at room temperature using a UV–Vis spectrophotometer in the wavelength range between 200–800 nm and the band gap energy was calculated from reflectance spectra using kubalka munk function and the results indicated that the band gap energy decreased from 3.23 eV at 500 oC to 3.21 eV at 600 °C due to an increase of particle size. This simple thermal-treatment method has advantages of the pure nanoparticles formation as no additional chemicals were required, a lack of by-product effluents, and environmentally friendly process.

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