Impacts of Annealing Temperature on Morphological, Optical and Photocatalytic Properties of Gel-Combustion-Derived LaFeO3 Nanoparticles

Pure ZnO thin films and Ag doped ZnO thin films were prepared on quartz substrates by sol-gel process. Structural features and UV absorption spectrum have been studied by XRD and UV-Vis-Nir scanning spectrophotometer. Taking phenol as pollutants, further study of the effect of different annealing temperature and Ag dopant amount of ZnO films on photocatalytic properties was carried out. The results showed that, the optimal annealing temperature on photocatalytic degradation of phenol in this experiment was 300 °C, the best molar ratio of ZnO and Ag was 30:1, which was better than pure ZnO film greatly. Excellent adhesion, recyclable and efficient degradation Ag doped ZnO thin films were found in this experiment.

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Study on the effect of annealing temperature and photocatalytic properties of TbMnO3 nanoparticles

Optik ◽

10.1016/j.ijleo.2017.03.081 ◽

2017 ◽

Vol 138 ◽

pp. 365-371 ◽

Cited By ~ 7

Author(s):

R. Dhinesh Kumar ◽

R. Thangappan ◽

R. Jayavel

Keyword(s):

Annealing Temperature ◽

Photocatalytic Properties

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Synthesis and effect of annealing temperature on the structural, magnetic and photocatalytic properties of (La0.5Bi0.2Ba0.2Mn0.1)FeO(3−δ)

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2016.05.007 ◽

2016 ◽

Vol 178 ◽

pp. 196-203 ◽

Cited By ~ 7

Author(s):

Ibrahim Abdulkadir ◽

Sreekantha B. Jonnalagadda ◽

Bice S. Martincigh

Keyword(s):

Annealing Temperature ◽

Photocatalytic Properties

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Effects of annealing temperature on some structural and optical properties of ZnO nanoparticles prepared by a modified sol–gel combustion method

Ceramics International ◽

10.1016/j.ceramint.2010.08.017 ◽

2011 ◽

Vol 37 (1) ◽

pp. 393-398 ◽

Cited By ~ 246

Author(s):

A. Khorsand Zak ◽

M. Ebrahimizadeh Abrishami ◽

W.H. Abd. Majid ◽

Ramin Yousefi ◽

S.M. Hosseini

Keyword(s):

Optical Properties ◽

Zno Nanoparticles ◽

Annealing Temperature ◽

Sol Gel ◽

Combustion Method ◽

Structural And Optical Properties ◽

Gel Combustion ◽

Gel Combustion Method

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Role of Na+ ion removal on the photocatalytic properties of hydrothermally-prepared nanotubes TiO2

Malaysian Journal of Fundamental and Applied Sciences ◽

10.11113/mjfas.v13n2.617 ◽

2017 ◽

Vol 13 (2) ◽

Author(s):

Naimat Abimbola Eleburuike ◽

Wan Azelee Wan Abu Bakar ◽

Rusmidah Ali

Keyword(s):

Crystal Structure ◽

Photocatalytic Activity ◽

Annealing Temperature ◽

Poor Performance ◽

Sodium Titanate ◽

High Photocatalytic Activity ◽

Photocatalytic Properties ◽

Ion Content ◽

Na Ions

Nanostructured TiO2 enjoys wide patronage for the remediation of water sources that have been contaminated with organic pollutants due to its excellent photocatalytic properties. This study investigated the role of removal of Na+ ions from hydrothermally-prepared TiO2 nanotubes (TNTs) by washing with dilute hydrochloric acid. The photocatalytic activity of TNTs was tested on the degradation of modelled paraquat dichloride-contaminated water. It was found that the amount of residual Na+ ions after acid washing greatly influenced the photocatalytic properties of TNTs. The Na+ ions had significant effect on the crystal structure of TNTs and the crystal structure varied with the annealing temperature. Hence, the effect of the residual Na+ ions was observed at different annealing temperatures of 500, 700 and 800 °C. It was discovered that TNTs containing negligible Na+ ions demonstrated high photocatalytic activity at 500 °C annealing temperature because it consisted of active crystalline anatase species at this temperature. On the other hand, TNTs with high Na+ ion content showed poor performance at 500 °C due to the presence of amorphous sodium titanate species which could result in rapid electron-hole pair recombination. So, it showed highest photocatalytic activity at 800 °C when the crystallinity had increased. Generally, it can be concluded that TNTs with negligible Na+ ion content demonstrated excellent photocatalytic activity by achieving 77.1% degradation of paraquat dichloride compared to those with high Na+ ion content which achieved 61.1% degradation of paraquat dichloride within 5 h.

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