ZnO micro/nano complex structure films, including reticulate papillary nodes, petal-like and flake-hole, have been self-assembled by a hydrothermal technique at different temperatures without metal catalysts. The wett...ZnO micro/nano complex structure films, including reticulate papillary nodes, petal-like and flake-hole, have been self-assembled by a hydrothermal technique at different temperatures without metal catalysts. The wettability of the above film surfaces was modified with a simple coating of heptadecafluorodecyltrimethoxy-silane in toluene. After modifying, the surface of ZnO film grown at 50℃ was converted from superhydrophilic with a water contact angle lower than 5° to superhydrophobic with a water contact angle of 165° Additionally, the surface of reticulate papillary nodes ZnO film grown at 100 ℃ had excellent superhydrophobicity, with a water contact angle of 173° and a sliding angle lower than 2° Furthermore, the water contact angle on the surface of petal-like and flake-hole ZnO films grown at 150℃ and 200℃ were found to be 140° and 120°, respectively. The wettability for the samples was found to depend strongly on the surface morphology which results from the growth temperature.展开更多
采用水热法制备鸟巢状ZnO微球,通过XRD、SEM和HRTEM对鸟巢状ZnO微球进行形貌观察和晶体结构分析。结果表明,鸟巢状ZnO微球由许多ZnO纳米棒(片)构成,结晶性好,比表面积大,这些ZnO纳米棒沿[0110]方向定向生长;用旋转涂覆法将鸟巢状ZnO微...采用水热法制备鸟巢状ZnO微球,通过XRD、SEM和HRTEM对鸟巢状ZnO微球进行形貌观察和晶体结构分析。结果表明,鸟巢状ZnO微球由许多ZnO纳米棒(片)构成,结晶性好,比表面积大,这些ZnO纳米棒沿[0110]方向定向生长;用旋转涂覆法将鸟巢状ZnO微球涂覆到FTO玻璃(F:SnO2)导电面上并组装成染料敏化太阳能电池(dye-sensitized solar cell,缩写为DSSC);通过光伏曲线测试分析,研究涂覆次数对太阳能电池性能的影响,在模拟太阳光下DSSC的光电转换效率为0.63%。展开更多
基金Project supported by the 973 Program of China (Grant No. 2006CB302900)National Natural Science Foundation of China(Grant No. 50872129)
文摘ZnO micro/nano complex structure films, including reticulate papillary nodes, petal-like and flake-hole, have been self-assembled by a hydrothermal technique at different temperatures without metal catalysts. The wettability of the above film surfaces was modified with a simple coating of heptadecafluorodecyltrimethoxy-silane in toluene. After modifying, the surface of ZnO film grown at 50℃ was converted from superhydrophilic with a water contact angle lower than 5° to superhydrophobic with a water contact angle of 165° Additionally, the surface of reticulate papillary nodes ZnO film grown at 100 ℃ had excellent superhydrophobicity, with a water contact angle of 173° and a sliding angle lower than 2° Furthermore, the water contact angle on the surface of petal-like and flake-hole ZnO films grown at 150℃ and 200℃ were found to be 140° and 120°, respectively. The wettability for the samples was found to depend strongly on the surface morphology which results from the growth temperature.
文摘采用水热法制备鸟巢状ZnO微球,通过XRD、SEM和HRTEM对鸟巢状ZnO微球进行形貌观察和晶体结构分析。结果表明,鸟巢状ZnO微球由许多ZnO纳米棒(片)构成,结晶性好,比表面积大,这些ZnO纳米棒沿[0110]方向定向生长;用旋转涂覆法将鸟巢状ZnO微球涂覆到FTO玻璃(F:SnO2)导电面上并组装成染料敏化太阳能电池(dye-sensitized solar cell,缩写为DSSC);通过光伏曲线测试分析,研究涂覆次数对太阳能电池性能的影响,在模拟太阳光下DSSC的光电转换效率为0.63%。
