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Self-Assembly of Peptide-Polyoxometalate Hybrid Sub-Micrometer Spheres for Photocatalytic Degradation of Methylene Blue
The Journal of Physical Chemistry B ( IF 2.8 ) Pub Date : 2017-11-15 00:00:00 , DOI: 10.1021/acs.jpcb.7b07100 Lu Tong 1 , Zhi Wang 2 , Congxin Xia 1 , Yingjie Yang 1 , Shiling Yuan 2 , Di Sun 2 , Xia Xin 1
The Journal of Physical Chemistry B ( IF 2.8 ) Pub Date : 2017-11-15 00:00:00 , DOI: 10.1021/acs.jpcb.7b07100 Lu Tong 1 , Zhi Wang 2 , Congxin Xia 1 , Yingjie Yang 1 , Shiling Yuan 2 , Di Sun 2 , Xia Xin 1
Affiliation
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The spontaneous formation of hybrid submicrometer spheres that were composed by a Weakley-type polyoxometalate Na9[EuW10O36]·32H2O (denoted as EuW10) and cationic peptide (K8) through a simple ionic self-assembly method was investigated. The approach presented in this study is an extended research which combined a biomolecule and a functional inorganic polyoxoanion for the fabrication of a multifunctional material. The K8/EuW10 hybrid submicrometer spheres were fully characterized by transmission electron microscopy, field-emission scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, confocal laser scanning microscopy, and fluorescence spectra. The results indicated that the electrostatic interaction, hydrogen-bonding interaction, and combined hydrophobic interaction between EuW10 and K8 favored the formation of the smooth submicrometer sphere structure. Once the EuW10/K8 submicrometer spheres were forming, the fluorescence of EuW10 was reduced due to the hydrogen bonding between the ammonium group of K8 and the oxygen atom of EuW10 that blocked the hopping of the d1 electron in EuW10. Interestingly, our submicrometer spheres showed excellent decomposition efficiency toward organic pollutants such as the dye of methylene blue (MB), suggesting their promising applications in the treatment of wastewater.
中文翻译：
肽-多金属氧酸盐杂化亚微米球的自组装对亚甲基蓝的光催化降解
通过简单的离子自组装方法研究了由Weakley型多金属氧酸盐Na 9 [EuW 10 O 36 ]·32H 2 O（表示为EuW 10）和阳离子肽（K8）组成的混合亚微米球的自发形成。。这项研究中提出的方法是一项扩展的研究，将生物分子和功能性无机聚氧阴离子结合在一起以制造多功能材料。K8 / EuW 10通过透射电子显微镜，场发射扫描电子显微镜，傅立叶变换红外光谱，X射线衍射，共聚焦激光扫描显微镜和荧光光谱对混合亚微米球体进行了全面表征。结果表明，EuW 10和K8之间的静电相互作用，氢键相互作用和疏水相互作用共同促进了亚微米级光滑球体结构的形成。一旦EuW 10 / K8亚微米球体形成，EuW的荧光10减少由于铵基K8和EuW的氧原子之间的氢键10指示阻止了d的跳频1中EuW电子10。有趣的是，我们的亚微米球对亚甲基蓝（MB）染料等有机污染物表现出出色的分解效率，表明它们在废水处理中的应用前景广阔。
更新日期：2017-11-15
中文翻译：
肽-多金属氧酸盐杂化亚微米球的自组装对亚甲基蓝的光催化降解
通过简单的离子自组装方法研究了由Weakley型多金属氧酸盐Na 9 [EuW 10 O 36 ]·32H 2 O（表示为EuW 10）和阳离子肽（K8）组成的混合亚微米球的自发形成。。这项研究中提出的方法是一项扩展的研究，将生物分子和功能性无机聚氧阴离子结合在一起以制造多功能材料。K8 / EuW 10通过透射电子显微镜，场发射扫描电子显微镜，傅立叶变换红外光谱，X射线衍射，共聚焦激光扫描显微镜和荧光光谱对混合亚微米球体进行了全面表征。结果表明，EuW 10和K8之间的静电相互作用，氢键相互作用和疏水相互作用共同促进了亚微米级光滑球体结构的形成。一旦EuW 10 / K8亚微米球体形成，EuW的荧光10减少由于铵基K8和EuW的氧原子之间的氢键10指示阻止了d的跳频1中EuW电子10。有趣的是，我们的亚微米球对亚甲基蓝（MB）染料等有机污染物表现出出色的分解效率，表明它们在废水处理中的应用前景广阔。
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