Visible-light Photochromism of Phosphomolybdic Acid/ZnO Composite  

作　　者：SUN Wentian SI Yunheng JING Haitao DONG Zhaojun WANG Chunxu ZHANG Yupeng ZHAO Lichen FENG Wei YAN Yon 

机构地区：[1]Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changehun 130021, P. R. China [2]Environmental Monitoring Center of Zhengzhou City, Zhengzhou 450000, P. R. China [3]State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China

出　　处：《Chemical Research in Chinese Universities》2018年第3期464-469,共6页高等学校化学研究（英文版）

摘　　要：A novel photochromic hybrid ZnO was synthesized by doping with phosphomolybdic acid（PMoA）. It could respond to visible light and fade in color when treated with hydrogen peroxide（H2O2）. The microstlucture and photochromic properties were investigated via X-ray diffraction（XRD）, Fourier transform infrared spectroscopy（FTIR）, scanning electron microscopy（SEM）, transmission electron microscopy（TEM）, ultraviolet-visible spectroscopy（UV-Vis） and X-ray photoelectron spectroscopy（XPS）. The XRD patterns show that the prepared ZnO is pure and has a hexagonal wurtzite structure. The FTIR results demonstrate the existence of a strong interaction between PMoA and ZnO. Due to PMoA doping, the rough surface morphology of ZnO became smooth, as verified by the SEM images. The TEM images illustrate that pure ZnO exhibits a polycrystalline structure with irregular morphology PMoA was wrapped on the surface of ZnO. After visible-light irradiation, the composite changed from slight yellow to blue and returned to the original color in the presence of H2O2. The composite had good photosensitivity and photochromic reversibility. The photochromic process was in accord with photoinduced electrons transfer mechanism.A novel photochromic hybrid ZnO was synthesized by doping with phosphomolybdic acid（PMoA）. It could respond to visible light and fade in color when treated with hydrogen peroxide（H2O2）. The microstlucture and photochromic properties were investigated via X-ray diffraction（XRD）, Fourier transform infrared spectroscopy（FTIR）, scanning electron microscopy（SEM）, transmission electron microscopy（TEM）, ultraviolet-visible spectroscopy（UV-Vis） and X-ray photoelectron spectroscopy（XPS）. The XRD patterns show that the prepared ZnO is pure and has a hexagonal wurtzite structure. The FTIR results demonstrate the existence of a strong interaction between PMoA and ZnO. Due to PMoA doping, the rough surface morphology of ZnO became smooth, as verified by the SEM images. The TEM images illustrate that pure ZnO exhibits a polycrystalline structure with irregular morphology PMoA was wrapped on the surface of ZnO. After visible-light irradiation, the composite changed from slight yellow to blue and returned to the original color in the presence of H2O2. The composite had good photosensitivity and photochromic reversibility. The photochromic process was in accord with photoinduced electrons transfer mechanism.

关 键 词：Visible light Phosphomolybdic acid（PMoA） DOPING PMoA/ZnO PHOTOCHROMISM 

分 类 号：TN248.4[电子电信—物理电子学] Q945.11[生物学—植物学]