Preparation of monodisperse CdTe nanocrystals-SiO2 microspheres without ligands exchange

2006 ◽  
Vol 280 (1-3) ◽  
pp. 169-176 ◽  
Author(s):  
Kun Han ◽  
Zheng Xiang ◽  
Zhihui Zhao ◽  
Chunlei Wang ◽  
Minjie Li ◽  
...  
Keyword(s):  
Cdte Nanocrystals ◽  
Sio2 Microspheres ◽  
Ligands Exchange

scholarly journals Hydrolytic Modification of SiO2 Microspheres with Na2SiO3 and the Performance of Supported Nano-TiO2 Composite Photocatalyst

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2553
Author(s):  
Yu Tu ◽  
Weihua Ao ◽  
Chunhong Wang ◽  
Tianyu Ren ◽  
Lijuan Zhang ◽  
...  
Keyword(s):  
Sol Gel ◽  
Active Surface ◽  
Hydroxyl Groups ◽  
Nano Tio2 ◽  
Amorphous Sio2 ◽  
Composite Photocatalyst ◽  
Sio2 Shell ◽  
Functional Efficiency ◽  
Sio2 Microspheres ◽  
Better Than

Modified microspheres (SiO2-M) were obtained by the hydrolytic modification of silicon dioxide (SiO2) microspheres with Na2SiO3, and then, SiO2-M was used as a carrier to prepare a composite photocatalyst (SiO2-M/TiO2) using the sol-gel method; i.e., nano-TiO2 was loaded on the surface of SiO2-M. The structure, morphology, and photocatalytic properties of SiO2-M/TiO2 were investigated. Besides, the mechanism of the effect of SiO2-M was also explored. The results show that the hydrolytic modification of Na2SiO3 coated the surface of SiO2 microspheres with an amorphous SiO2 shell layer and increased the quantity of hydroxyl groups. The photocatalytic performance of the composite photocatalyst was slightly better than that of pure nano-TiO2 and significantly better than that of the composite photocatalyst supported by unmodified SiO2. Thus, increasing the loading capacity of nano-TiO2, improving the dispersion of TiO2, and increasing the active surface sites are essential factors for improving the functional efficiency of nano-TiO2. This work provides a new concept for the design of composite photocatalysts by optimizing the performance of the carrier.

A novel two-step modifying process for preparation of chitosan-coated Fe3O4/SiO2 microspheres

2009 ◽  
Vol 209 (7) ◽  
pp. 3218-3225 ◽  
Author(s):  
Zhongli Lei ◽  
Xiaolong Pang ◽  
Na Li ◽  
Lin Lin ◽  
Yanli Li
Keyword(s):  
Sio2 Microspheres

scholarly journals Synthesis and Bio-Imaging Application of Highly Luminescent Mercaptosuccinic Acid-Coated CdTe Nanocrystals

PLoS ONE ◽  
2008 ◽  
Vol 3 (5) ◽  
pp. e2222 ◽  
Author(s):  
Erbo Ying ◽  
Dan Li ◽  
Shaojun Guo ◽  
Shaojun Dong ◽  
Jin Wang
Keyword(s):  
Cdte Nanocrystals ◽  
Mercaptosuccinic Acid ◽  
Imaging Application ◽  
Bio Imaging

Ultra-absorbent hybrid hydrogel based on alginate and SiO2 microspheres: A high-water-content system for removal of methylene blue

2019 ◽  
Vol 276 ◽  
pp. 204-213 ◽  
Author(s):  
Caroline O. Panão ◽  
Eduardo L.S. Campos ◽  
Hugo H.C. Lima ◽  
Andrelson W. Rinaldi ◽  
Michele K. Lima-Tenório ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Water Content ◽  
High Water ◽  
High Water Content ◽  
Hybrid Hydrogel ◽  
Content System ◽  
Sio2 Microspheres

scholarly journals OPTICAL AND ELECTROCHEMICAL PROPIERTIES IN CdSe/CdTe AND CdSe/CdTe NANOCRYSTALS PREPARED BY AQUEOUS SYNTHESIS

2020 ◽  
pp. 160-169
Author(s):  
Raul Fernando Cuevas Rojas ◽  
Miguel Angel González Balanta ◽  
Silvio José Prado ◽  
Pablo Henrique Menezes ◽  
Lauro Antonio Pradela Filho ◽  
...  
Keyword(s):  
Aqueous Synthesis ◽  
Cdte Nanocrystals
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