Zhitao Zhou
Hefei Normal University
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Zhitao Zhou.
Journal of Materials Science: Materials in Electronics | 2014
Wanbing Gong; Guangcai Pan; Fengjiao Shang; Feng Wang; Zhitao Zhou; Changlong Liu; Min Zhao; Zhenfa Zi; Yiyong Wei; Jianguo Lv; Xiaoshuang Chen; Gang He; Miao Zhang; Xueping Song; Zhaoqi Sun
AbstractZinc oxide (ZnO) thin films with different ethylene glycol monomethyl ether (EGME) ratio were prepared on Si substrates using a two-step process. The results show that they possess a polycrystalline hexagonal wurtzite crystal structure. The topography of the ZnO thin films evolves from nanoparticles to hexagonal nanorods with the decrease of EGME content. The photoluminescence spectra consist of a near-band-edge emission and two visible emissions. The optical band gap energy decreases first and then increases with the increase of EGME ratio in mixed solvent, the broadening of the optical band gap can be explained by Moss–Burstein effect. The wetting behavior of all the samples can switch from hydrophobicity to hydrophilicity through UV illumination. The degradation efficiency of the thin films increases with decreasing EGME content, photocatalytic reaction mechanism of the ZnO thin films is discussed in detail.
Physica Scripta | 2013
Jianguo Lv; Zhitao Zhou; Feng Wang; Changlong Liu; Wanbing Gong; Xiaoshuang Chen; Gang He; Shiwei Shi; Xueping Song; Zhaoqi Sun; Yongqiang Tang
The microstructure, surface topography and wetting properties of zinc oxide (ZnO) thin films, which were grown at different concentrations of zinc nitrate hexahydrate, were measured by x-ray diffractometry, scanning electron microscopy and water contact angle apparatus. It is revealed that at concentrations larger than 0.01 mol l−1, one peak corresponds to the (111) direction of the cubic phase of ZnO, except for six peaks of the hexagonal phase of ZnO, was observed. As the concentration increases, the average diameter and density of the ZnO nanorods increase but the area proportion of the nonpolar planes in the outermost surface increase first, then decrease. All the ZnO thin films exhibit hydrophobic behavior. After 120 min of ultraviolet irradiation, the wettability of the ZnO surfaces change from hydrophobicity to hydrophilicity. The photo-induced change of the water contact angle increases first then decreases with the increase of concentration. The differences of photo-induced hydrophilicity may be determined by the transition of the wetting model, the area proportion of the nonpolar planes and the surface roughness.
Electronic Materials Letters | 2013
Jianguo Lv; Changlong Liu; Feng Wang; Zhitao Zhou; Zhenfa Zi; Yuan Feng; Xiaoshuang Chen; Feng Liu; Gang He; Shiwei Shi; Xueping Song; Zhaoqi Sun
ZnO thin films were grown on silicon substrates using a hydrothermal method. The XRD patterns show that all of the peaks can be attributed to the wurtzite structures of ZnO. The TC value of (002) plane and average crystal size increase first and then decrease with the increase of solution concentration. SEM and AFM results show that many dense hexagonal cylinder particles have been observed on the surface of the thin films, which grown at 0.08 and 0.10 mol/L. The surface roughness of the thin films deposited at 0.06, 0.08, 0.10, and 0.12 mol/L are 24.5, 38.3, 32.0, and 39.4 nm, respectively. Surface wettability results show that the preferential orientation along c-axis and surface roughness contribute significantly to the hydrophobicity. The reversible switching between hydrophobicity and hydrophilicity is related to the synergy of the transition of wetting model, surface crystal structure, and surface roughness.
Journal of Materials Science: Materials in Electronics | 2015
Jianguo Lv; Yue Sun; Li Cao; Min Zhao; Fengjiao Shang; Sicong Mao; Yaoyao Jiang; Jinhua Xu; Feng Wang; Zhitao Zhou; Yiyong Wei; Gang He; Miao Zhang; Xueping Song; Zhaoqi Sun
Nanoscale Research Letters | 2014
Min Zhao; Fengjiao Shang; Jianguo Lv; Ying Song; Feng Wang; Zhitao Zhou; Gang He; Miao Zhang; Xueping Song; Zhaoqi Sun; Yiyong Wei; Xiaoshuang Chen
Journal of Materials Science: Materials in Electronics | 2014
Jianguo Lv; Fengjiao Shang; Guangcai Pan; Feng Wang; Zhitao Zhou; Changlong Liu; Wanbing Gong; Zhenfa Zi; Xiaoshuang Chen; Gang He; Miao Zhang; Xueping Song; Zhaoqi Sun; Feng Liu
Applied Surface Science | 2014
Changlong Liu; Fengjiao Shang; Guangcai Pan; Feng Wang; Zhitao Zhou; Wanbing Gong; Zhenfa Zi; Yiyong Wei; Xiaoshuang Chen; Jianguo Lv; Gang He; Miao Zhang; Xueping Song; Zhaoqi Sun
Applied Physics A | 2015
Min Zhao; Fengjiao Shang; Ying Song; Feng Wang; Zhitao Zhou; Jianguo Lv; Zhenfa Zi; Yiyong Wei; Xiaoshuang Chen; Gang He; Miao Zhang; Xueping Song; Zhaoqi Sun
Superlattices and Microstructures | 2013
Jianguo Lv; Zhitao Zhou; Feng Wang; Changlong Liu; Wanbing Gong; Jielin Dai; Xiaoshuang Chen; Gang He; Shiwei Shi; Xueping Song; Zhaoqi Sun; Feng Liu
Journal of Materials Science: Materials in Electronics | 2014
Zhitao Zhou; Fengjiao Shang; Guangcai Pan; Feng Wang; Changlong Liu; Wanbing Gong; Zhenfa Zi; Yiyong Wei; Jianguo Lv; Xiaoshuang Chen; Gang He; Miao Zhang; Xueping Song; Zhaoqi Sun