Study of Low Temperature Preparation of Al Doped ZnO Powder and its Photocatalytic Properties

2020 ◽  
Vol 860 ◽  
pp. 329-337
Author(s):  
Annisa Aprilia ◽  
Davi Putri Hanavi ◽  
Choiry Ghina Afrilia ◽  
Ayi Bahtiar ◽  
Sri Suryaningsih ◽  
...  
Keyword(s):  
Low Temperature ◽  
Zinc Acetate Dihydrate ◽  
Sol Gel ◽  
Photocatalytic Property ◽  
Optical Characteristics ◽  
Al Content ◽  
Photodegradation Rate ◽  
Low Temperature Preparation ◽  
Doped Zno ◽  
Zno Powder

Aluminum doped ZnO crystal powders have been successfully prepared by sol-gel method with low temperature (150°C) crystallization process. The AlNO3 as material dopant were varied by 0.5 wt% and 1.0 wt% relate to 5 mmol of zinc acetate dihydrate as precursor. Degradation of the methylene blue (MB) was used to evaluate the photocatalytic property. The results showed that all ZnO samples have spherical morphology with hexagonal wurtzite crystal structures. The ZnO powder with 0.5 wt % of aluminum has a better photocatalytic property that related to the optical characteristics. The optimum of Al content (0.5wt%) reduces the crystallite size and give some advantages in optical characteristics that directly relate to the increments in photocatalytic behavior. The photodegradation rate of Al doped ZnO 0.5 wt% is increase almost 100% compared with ZnO undoped. The stability and reusability of 0.5 wt% Al doped ZnO as photocatalyst, is also observed by monitoring the photocatalytic behavior under 14 hours irradiation (in three recycle used)

Low-temperature preparation of transparent conductive Al-doped ZnO thin films by a novel sol–gel method

2014 ◽  
Vol 49 (14) ◽  
pp. 4722-4734 ◽  
Author(s):  
Dongyun Guo ◽  
Kuninori Sato ◽  
Shingo Hibino ◽  
Tetsuya Takeuchi ◽  
Hisami Bessho ◽  
...  
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
Sol Gel ◽  
Zno Thin Films ◽  
Gel Method ◽  
Sol Gel Method ◽  
Low Temperature Preparation ◽  
Doped Zno ◽  
Temperature Preparation

Low-temperature preparation of highly (111) oriented PZT thin films by a modified sol–gel technique

2000 ◽  
Vol 208 (1-4) ◽  
pp. 541-545 ◽  
Author(s):  
X.J Meng ◽  
J.G Cheng ◽  
B Li ◽  
S.L Guo ◽  
H.J Ye ◽  
...  
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
Sol Gel ◽  
Pzt Thin Films ◽  
Low Temperature Preparation ◽  
Gel Technique ◽  
Temperature Preparation

Removal of Lead (II) Ion from Aqueous Solution Using Ga-Doped ZnO and Ca-Doped ZnO Nanopowder

2019 ◽  
Vol 74 (7) ◽  
pp. 573-580 ◽  
Author(s):  
Imed Ghiloufi ◽  
Jaber El Ghoul ◽  
Abu-Eliz Modwi ◽  
Ibrahim AlShunaifi ◽  
Lassaad El Mir
Keyword(s):  
Aqueous Solution ◽  
Zinc Acetate Dihydrate ◽  
Sol Gel ◽  
Supercritical Drying ◽  
Lead Ions ◽  
Morphological Properties ◽  
Gallium Nitrate ◽  
Batch Mode ◽  
Chloride Hexahydrate ◽  
Doped Zno

AbstractThe present work investigates the performance of Ga-doped ZnO (GZO) and Ca-doped ZnO (CZ) nanopowders as an efficient nanomaterials for the removal of lead ions from aqueous solutions. The sol–gel method was used to synthesise the nanoparticles from zinc acetate dihydrate. To incorporate Ca and Ga in ZnO, adequate quantities of calcium chloride hexahydrate and gallium nitrate hydrate were added to ZnO, and supercritical drying conditions of ethyl alcohol were used. Different Ca and Ga concentrations (1, 2, 3, 4, 5 at.%) were used to synthesise CZ and GZO. The structural and morphological properties of the as-prepared nanoparticles were determined using X-ray diffraction and transmission electron microscopy. Batch-mode experiments were used to remove lead from aqueous solution and to determine the adsorption equilibrium isotherms of lead ions using ZnO doped by 3 at.% of weight of Ca (CZ3) and Ga (GZO3). The effects of temperature, contact time, and pH on the removal of lead ions from aqueous solution by CZ3 and GZO3 were studied.

Low Temperature Preparation of Mullite Whisker via Non-Hydrolytic Sol-Gel Process Combined with Molten Salt Method

2014 ◽  
Vol 936 ◽  
pp. 975-980 ◽  
Author(s):  
Kai Lin Fu ◽  
Wei Hui Jiang ◽  
Guo Feng ◽  
Jian Min Liu ◽  
Qian Wu ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Low Temperature ◽  
Molten Salt ◽  
Sol Gel ◽  
Growth Direction ◽  
Treatment Temperature ◽  
Molten Salt Method ◽  
Low Temperature Preparation ◽  
Sol Gel Process ◽  
Temperature Preparation

Mullite whisker was prepared at low temperature via non-hydrolytic sol-gel (NHSG) process combined with molten salt method. The influence of heat treatment temperature was studied on the morphology and the microstructure of whisker, and its growth mechanism was also described. The results show that the mullite whisker appears at the lowest temperature of 750 °C, and optimized mullite whisker can be prepared at 850 °C with the growth direction of [00, whose diameter is in the range of 170~300 nm with the aspect ratio of >30.

Low-Temperature Preparation and Characterization of (Pb,Ba)TiO3Thin Film by Sol–Gel and Hydrothermal Treatment

2006 ◽  
Vol 45 (9B) ◽  
pp. 7283-7287 ◽  
Author(s):  
Takuji Naoyama ◽  
Akihiro Inoue ◽  
Kohei Takei ◽  
Minoru Noda ◽  
Masanori Okuyama
Keyword(s):  
Low Temperature ◽  
Hydrothermal Treatment ◽  
Sol Gel ◽  
Low Temperature Preparation ◽  
Temperature Preparation

Effect of Transition Metal Ion Doping on the Photocatalytic Activities of TiO2 Synthesized by Sol-Gel Method

2012 ◽  
Vol 562-564 ◽  
pp. 260-264
Author(s):  
Min Zhong ◽  
Jing Jing Yu ◽  
Zhi Hao Wei ◽  
Ping Zhan Si
Keyword(s):  
Low Temperature ◽  
Transition Metal ◽  
Absorption Edge ◽  
Metal Ion ◽  
Sol Gel ◽  
Photocatalytic Property ◽  
Transition Metal Ions ◽  
Photocatalytic Properties ◽  
Gel Method ◽  
Sol Gel Method

Pure TiO2 , Ti 0.75 Fe0.25 O2, Ti0.75 Ni0.25 O2, Ti0.75 Co0.25 O2 nanocrystals were prepared by low temperature sol-gel method. The samples were characterized by using transmission electron microscope, X-ray diffractometer and ultraviolet-visible spectrophotometer to study the effect of transition metal ions on the photocatalytic properties of TiO2 nanocrystals. The results show that the pure TiO2 and Ti0.75 Fe0.25 O2, Ti0.75 Ni0.25 O2, Ti0.75 Co0.25 O2 nanocrystals were granular and the size of which is 3.5, 2.9, 3.6, 3.9 nm, respectively. The titania anatase phases appear in the pure TiO2 , the Ti0.75 Fe0.25 O2, Ti0.75 Ni0.25 O2, Ti0.75 Co0.25 O2. The absorption edge of Ti0.75 Fe0.25 O2occur red shift comparing with that of pure TiO2 and the absorption edge of Ti0.75 Fe0.25 O2and Ti0.75 Fe0.25 O2occur blue shift comparing with that of pure TiO2. The photocatalytic properties of pure TiO2, Ti0.75 Fe0.25 O2, Ti0.75 Fe0.25 O2, Ti0.75 Fe0.25 O2nanocrystals synthesized at low temperature by sol-gel method were investigated by degrading the methyl orange solution under ultraviolet irradiation. The degradation rate of Ti0.75 Fe0.25 O2is the highest (60%) and that of Ti0.75Co0.25O2 (10%) is the lowest among these catalysts after degradation for 120min.The result shows that the photocatalytic property ofTi0.75 Fe0.25 O2nanocrystals synthesized at low temperature is obviously better than that of pure TiO2 and Ti0.75 Fe0.25 O2, Ti0.75 Fe0.25 O2.

Study on the Preparation and Photocatalytic Property of N, Fe, Zn Nano-TiO2 Loaded on Active Carbon

2011 ◽  
Vol 356-360 ◽  
pp. 331-334
Author(s):  
Chen Tao Hou ◽  
Xia He ◽  
Ying Wang ◽  
Wen Jie Nie
Keyword(s):  
Active Carbon ◽  
Sol Gel ◽  
Photocatalytic Property ◽  
Light Response ◽  
Average Diameter ◽  
Dip Coating ◽  
X Ray Diffraction ◽  
Photodegradation Efficiency ◽  
Photodegradation Rate ◽  
Dip Coating Technique

In the paper, tetranbutyl titanate was loaded on granular active carbon using sol-gel dip-coating technique to form anatase nano-TiO2 photocatalyst with an average diameter of 16nm doped with N, Fe, Zn ions. The morphology and crystal structure were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and UV–Vis spectrophotometer, respectively. The results show that the prepared photocatalyst demonstrates outstanding photodegradation efficiency and light response zone has transferred from ultraviolet light zone to UV-visible zone. Moreover, considering methylene blue (MB) as target degradation pollutant, under visible light irradiation, the photodegradation rate reached beyond 100% after 1h.

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