Wang Yingming, Ge Shengsong, Cheng Wei, Hu Zunju, Shao Qian, Wang Xiaojing, Lin Jing, Dong Mengyao, Wang Junxiang, Guo Zhanhu
College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, People's Republic of China.
School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China.
Langmuir. 2020 Aug 25;36(33):9658-9667. doi: 10.1021/acs.langmuir.0c00395. Epub 2020 Aug 16.
C-doped ZnO particles have been successfully prepared by the calcination using microwave hydrothermally prepared metal-organic framework-5 (MOF-5) as the precursor. MOF-5 was turned into C-doped ZnO through calcination at 500 °C, and its cubic shape was well-maintained. X-ray photoelectron spectroscopic studies confirmed the C-doping in the ZnO. The as-prepared C-doped ZnO demonstrated a Rhodamine B (RhB) degradation efficiency of 98% in 2 h under an solar-simulated light irradiation, much higher than that of C-doped ZnO derived from MOF-5 synthesized by the ordinary hydrothermal method. The trapping experiment revealed that the crucial factors in the RhB removal were photogenerated h and •O.
以微波水热法制备的金属有机框架-5（MOF-5）为前驱体，通过煅烧成功制备了碳掺杂的氧化锌颗粒。MOF-5在500℃煅烧后转变为碳掺杂的氧化锌，其立方形状得以很好地保持。X射线光电子能谱研究证实了氧化锌中存在碳掺杂。所制备的碳掺杂氧化锌在模拟太阳光照射下2小时内对罗丹明B（RhB）的降解效率为98%，远高于通过普通水热法合成的MOF-5衍生的碳掺杂氧化锌。俘获实验表明，去除RhB的关键因素是光生空穴和•O。
