Removal of Congo Red by magnetic mesoporous titanium dioxide–graphene oxide core–shell microspheres for water purification

2014 ◽  
Vol 43 (22) ◽  
pp. 8431 ◽  
Author(s):  
Leilei Li ◽  
Xiangjun Li ◽  
Huimin Duan ◽  
Xiaojiao Wang ◽  
Chuannan Luo
Keyword(s):  
Titanium Dioxide ◽  
Graphene Oxide ◽  
Water Purification ◽  
Congo Red ◽  
Core Shell ◽  
Mesoporous Titanium Dioxide

Mesoporous titanium dioxide@ zinc oxide–graphene oxide nanocarriers for colon-specific drug delivery

2017 ◽  
Vol 53 (3) ◽  
pp. 1634-1645 ◽  
Author(s):  
Mostafa Zamani ◽  
Mojtaba Rostami ◽  
Mozhgan Aghajanzadeh ◽  
Hamidreza Kheiri Manjili ◽  
Kobra Rostamizadeh ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Zinc Oxide ◽  
Titanium Dioxide ◽  
Graphene Oxide ◽  
Specific Drug ◽  
Colon Specific Drug Delivery ◽  
Mesoporous Titanium Dioxide

scholarly journals Iron Based Core-Shell Structures as Versatile Materials: Magnetic Support and Solid Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 72
Author(s):  
Christian Zambrzycki ◽  
Runbang Shao ◽  
Archismita Misra ◽  
Carsten Streb ◽  
Ulrich Herr ◽  
...  
Keyword(s):  
Water Purification ◽  
Functional Materials ◽  
Core Material ◽  
Solid Catalyst ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
The Core ◽  
Shell Nanostructures ◽  
Sio2 Shell ◽  
Iron Based

Core-shell materials are promising functional materials for fundamental research and industrial application, as their properties can be adapted for specific applications. In particular, particles featuring iron or iron oxide as core material are relevant since they combine magnetic and catalytic properties. The addition of an SiO2 shell around the core particles introduces additional design aspects, such as a pore structure and surface functionalization. Herein, we describe the synthesis and application of iron-based core-shell nanoparticles for two different fields of research that is heterogeneous catalysis and water purification. The iron-based core shell materials were characterized by transmission electron microscopy, as well as N2-physisorption, X-ray diffraction, and vibrating-sample magnetometer measurements in order to correlate their properties with the performance in the target applications. Investigations of these materials in CO2 hydrogenation and water purification show their versatility and applicability in different fields of research and application, after suitable individual functionalization of the core-shell precursor. For design and application of magnetically separable particles, the SiO2 shell is surface-functionalized with an ionic liquid in order to bind water pollutants selectively. The core requires no functionalization, as it provides suitable magnetic properties in the as-made state. For catalytic application in synthesis gas reactions, the SiO2-stabilized core nanoparticles are reductively functionalized to provide the catalytically active metallic iron sites. Therefore, Fe@SiO2 core-shell nanostructures are shown to provide platform materials for various fields of application, after a specific functionalization.

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