Superhydrophobic or superhydrophilic surfaces regulated by micro-nano structured ZnO powders

2008 ◽  
Vol 255 (5) ◽  
pp. 3371-3374 ◽  
Author(s):  
Xingfu Zhou ◽  
Xuefeng Guo ◽  
Weiping Ding ◽  
Yi Chen
Keyword(s):  
Zno Powders ◽  
Superhydrophilic Surfaces

Synthesis and Characterization of Nanocrystalline ZnO Powders by a Direct Thermal Decomposition Route Using Zinc Nitrate Hexahydrate

2013 ◽  
Vol 770 ◽  
pp. 68-71 ◽  
Author(s):  
Supphadate Sujinnapram ◽  
Uraiphorn Termsuk ◽  
Atcharawan Charoentam ◽  
Sutthipoj Sutthana
Keyword(s):  
Thermal Decomposition ◽  
Crystallization Temperature ◽  
Zinc Nitrate ◽  
Zinc Nitrate Hexahydrate ◽  
Absorption Peak ◽  
Synthesis And Characterization ◽  
Nitrate Hexahydrate ◽  
Different Temperatures ◽  
Zno Powders

The nanocrystalline ZnO powders were synthesized by a direct thermal decomposition using zinc nitrate hexahydrate as starting materials. The precursor was characterized by TG-DTA to determine the thermal decomposition and crystallization temperature which was found to be at 325 oC. The precursors were calcined at different temperatures of 400, 500, and 600°C for 4 h. The structure of the prepared samples was studied by XRD, confirming the formation of wurtzite structure. The synthesized powders exhibited the UV absorption below 400 nm (3.10 eV) with a well defined absorption peak at around 285 nm (4.35 eV). The estimated direct bandgaps were obtained to be 3.19, 3.16, and 3.14 eV for the ZnO samples thermally decomposed at 400, 500, and 600°C, respectively.

Explosive Pancake Bouncing on Hot Superhydrophilic Surfaces

2021 ◽  
Author(s):  
Minjie Liu ◽  
Hanheng Du ◽  
Yaqi Cheng ◽  
Huanxi Zheng ◽  
Yuankai Jin ◽  
...  
Keyword(s):  
Superhydrophilic Surfaces

Influence of Cd doping on structural and optical properties of (Cd, Al)-codoped ZnO powders synthesized via sol–gel method

2015 ◽  
Vol 645 ◽  
pp. 529-534 ◽  
Author(s):  
Libing Duan ◽  
Xiaoru Zhao ◽  
Yajun Wang ◽  
Hao Shen ◽  
Wangchang Geng ◽  
...  
Keyword(s):  
Optical Properties ◽  
Sol Gel ◽  
Structural And Optical Properties ◽  
Gel Method ◽  
Sol Gel Method ◽  
Cd Doping ◽  
Zno Powders

Influence of annealing atmosphere on optical properties of Al-doped ZnO powders

2012 ◽  
Vol 209 (8) ◽  
pp. 1538-1542 ◽  
Author(s):  
Chundong Li ◽  
Jinpeng Lv ◽  
Bo Zhou ◽  
Zhiqiang Liang
Keyword(s):  
Optical Properties ◽  
Annealing Atmosphere ◽  
Zno Powders ◽  
Doped Zno

Combustion synthesized ZnO powders for varistor ceramics

1999 ◽  
Vol 1 (3-4) ◽  
pp. 235-241 ◽  
Author(s):  
V.C. Sousa ◽  
A.M. Segadães ◽  
M.R. Morelli ◽  
R.H.G.A. Kiminami
Keyword(s):  
Zno Powders

Comparison of dye degradation efficiency using ZnO powders with various size scales

2007 ◽  
Vol 141 (3) ◽  
pp. 645-652 ◽  
Author(s):  
H WANG ◽  
C XIE ◽  
W ZHANG ◽  
S CAI ◽  
Z YANG ◽  
...  
Keyword(s):  
Dye Degradation ◽  
Degradation Efficiency ◽  
Zno Powders ◽  
Size Scales

Effect of cobalt doping on microstructures and dielectric properties of ZnO

2019 ◽  
Vol 97 (3) ◽  
pp. 227-232 ◽  
Author(s):  
Ye Zhao ◽  
Fan Tong ◽  
Mao Hua Wang
Keyword(s):  
Zno Nanoparticles ◽  
Sol Gel ◽  
Hexagonal Wurtzite Structure ◽  
Sem Analysis ◽  
Co Doping ◽  
In Doping ◽  
Zno Powders ◽  
Doped Zno ◽  
Zno Crystal ◽  
Co Doped

Pure and cobalt-doped ZnO nanoparticles (2.5, 5, 7.5, and 10 atom % Co) are synthesized by sol–gel method. The as-synthesized nanoparticles are characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and field emission scanning electron microscopy (FE-SEM) analysis. The nanoparticles of 0, 2.5, and 5 atom % Co-doped ZnO exhibited hexagonal wurtzite structure and have no other phases. Moreover, the (101) diffraction peaks position of Co-doped ZnO shift toward a smaller value of diffraction angle compared with pure ZnO powders. The results confirm that Co ions were well incorporated into ZnO crystal lattice. Simultaneously, Co doping also inhibited the growth of particles, and the crystallite size decreased from 43.11 nm to 36.63 nm with the increase in doping concentration from 0 to 10 atom %. The values of the optical band gap of all Co-doped ZnO nanoparticles gradually decreased from 3.09 eV to 2.66 eV with increasing Co content. Particular, the dielectric constant of all Co-doped ZnO ceramics gradually increased from 1.62 × 103 to 20.52 × 103, and the dielectric loss decreased from 2.36 to 1.28 when Co content increased from 0 to 10 atom %.

Solution combustion synthesis of ZnO powders using various surfactants as fuel

2018 ◽  
Vol 89 (2) ◽  
pp. 586-593 ◽  
Author(s):  
H. Vahdat Vasei ◽  
S. M. Masoudpanah ◽  
M. Adeli ◽  
M. R. Aboutalebi
Keyword(s):  
Combustion Synthesis ◽  
Solution Combustion Synthesis ◽  
Solution Combustion ◽  
Zno Powders
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