Preparation of silver/graphene/polymer hybrid microspheres and the study of photocatalytic degradation
Preparation of silver/graphene/polymer hybrid microspheres and the study of photocatalytic degradation
复制标题
银/石墨烯/聚合物杂化微球的制备及光催化降解研究
DOI：
10.1007/s00396-013-3148-x
复制
发表时间：
2014-01
影响因子：
2.4
通讯作者：
Ying Liang
中科院分区：
文献类型：
--
作者：
Zhi Li;Cunzhong Yang;Bin Fang;Ying Liang
为了抑制二维石墨烯的聚集，制备了三维银/石墨烯/聚合物杂化微球。将氧化石墨烯（GO）片成功包覆在直径约为3 μm的胺功能化聚苯乙烯-聚甲基丙烯酸缩水甘油酯（PS-PGMA）微球表面，形成氧化石墨烯/氨基微球（GO/AMS）核壳结构。随后，以水合肼为还原剂对包覆后的GO片进行还原，并在其褶皱表面修饰银纳米粒子，得到形状和直径均为单分散的Ag-rGO/AMS杂化微球。采用X射线衍射、扫描电子显微镜、拉曼光谱和紫外-可见吸收光谱对材料进行了表征。由于Ag纳米粒子的表面等离子体共振效应和rGO结构能改善光生电子和空穴的分离，Ag-rGO/AMS复合材料对亚甲基蓝（MB）的光催化降解表现出良好的活性，光照2.5 h后，MB的降解率达到93%。
Three-dimensional silver/graphene/polymer hybrid microspheres were prepared to depress the aggregation of two-dimensional graphene. Graphene oxide (GO) sheets were successfully wrapped on the surface of amine-functionalized polystyrene-poly (glycidyl methacrylate) (PS-PGMA) microspheres (∼3 μm in diameter) to form graphene oxide/amino-microsphere (GO/AMS) core–shell structure. Subsequently, the wrapped GO sheets were reduced by using hydrazine hydrate as the reducing agents, meanwhile decorated with silver nanoparticles on the wrinkled surface to form Ag-rGO/AMS hybrid microspheres with monodisperse distributions in shape and diameter. The resulting materials were characterized by power X-ray diffraction, scanning electron microscope, Raman spectra, and ultraviolet–visible (UV–vis) absorption spectra. Since Ag nanoparticles behave surface plasmon resonance effect and rGO structure can improve the separation of photogenerated electrons and holes, the Ag-rGO/AMS composites present good photocatalytic activities for the degradation of methylene blue (MB) as 93 % MB were degraded after 2.5 h under irradiation.
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影响因子：
13.3
作者：
Pasricha, Renu;Gupta, Shweta;Srivastava, Avanish Kumar
通讯作者：
Srivastava, Avanish Kumar
DOI：
10.1021/la204452p
发表时间：
2012-02
期刊：
Langmuir : the ACS journal of surfaces and colloids
影响因子：
--
作者：
Mingshan Zhu;Penglei Chen;Minghua Liu
通讯作者：
Mingshan Zhu;Penglei Chen;Minghua Liu
影响因子：
4.9
作者：
Xiong, Zhigang;Zhang, Li Li;Zhao, X. S.
通讯作者：
Zhao, X. S.
影响因子：
17.1
作者：
Marcano, Daniela C.;Kosynkin, Dmitry V.;Tour, James M.
通讯作者：
Tour, James M.
影响因子：
17.1
作者：
Fowler, Jesse D.;Allen, Matthew J.;Weiller, Bruce H.
通讯作者：
Weiller, Bruce H.