Extremely high photocatalytic activity of polymer nanospheres embedded with CdS nanoparticles prepared by a novel method

e-Polymers ◽  
2009 ◽  
Vol 9 (1) ◽  
Author(s):  
Yuanpeng Wu ◽  
Yongyi Gao ◽  
Xiaobin Ding ◽  
Zhaohui Zheng ◽  
Yuxing Peng
Keyword(s):  
Photocatalytic Activity ◽  
Self Assembly ◽  
High Photocatalytic Activity ◽  
Assembly System ◽  
Cds Nanoparticles ◽  
Mercaptopropionic Acid ◽  
Convenient Route ◽  
Novel Method ◽  
Polymer Nanospheres

AbstractA novel, practicable and convenient route has been developed to prepare polymer nanospheres embedded with CdS nanoparticles which show an extremely high photocatalytic activity compared with other photocatalysts. In this method, polymer nanospheres were fabricated through the polymerization of cadmium dimethacrylate which was introduced into self-assembly system of chitosan and 3-mercaptopropionic acid. Then CdS nanoparticles were prepared insitu by inflating H2S into the polymer nanospheres.

High Photocatalytic Activity Under Visible Light of Sandwich Structures Based on Anodic TiO2/CdS Nanoparticles/Sol–Gel TiO2

2020 ◽  
Vol 63 (1-2) ◽  
pp. 130-138 ◽  
Author(s):  
A. A. Rempel ◽  
Yu. V. Kuznetsova ◽  
I. B. Dorosheva ◽  
A. A. Valeeva ◽  
I. A. Weinstein ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Sandwich Structures ◽  
Sol Gel ◽  
High Photocatalytic Activity ◽  
Cds Nanoparticles

Facile decoration of CdS nanoparticles on TiO2: robust photocatalytic activity under LED illumination

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Maryam Fatolah ◽  
Gholam Reza Khayati
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Self Assembly ◽  
Aqueous Media ◽  
Cds Nanoparticles ◽  
Block Polymer ◽  
Main Crystalline Phase ◽  
Visible Light Active ◽  
Evaporation Induced Self Assembly ◽  
Cds Nanocomposites

Abstract A facile approach is presented to obtain visible-light-active TiO2/CdS nanocomposites with visible-light photocatalytic activity. Ordered nanospheres of TiO2 (with anatase as the main crystalline phase) were synthesized using evaporation-induced self-assembly (EIS) with P123 block polymer without any hazardous additives. Then, a rapid microwave (MW) protocol was used to obtain visible-light-absorbing nanocomposites between TiO2 and CdS in just 10 s. Based on Rietveld refinements of X-ray diffractrograms and elemental analysis it was found that nanoparticles of CdS are mainly decorated between the nanospheres of TiO2, which can simultaneously improve light absorption and suppress the unwanted photo-corrosion effects. The prepared nanocomposites were put to test for the removal of malachite green as a model pollutant from aqueous media under irradiation. The results revealed, that excessive loading results in unwanted surface covering and less than ideal activity, but for the sample with optimized loading, about 86 and 77% of the pollutant was degraded after 100 min of illumination at room temperature under the xenon short-arc and LED illumination, respectively.

scholarly journals Self-assembly of porphyrin on graphene oxide in aqueous medium: fabrication, characterization, and photocatalytic studies

2019 ◽  
Vol 18 (8) ◽  
pp. 2071-2079 ◽  
Author(s):  
Nagi El-Shafai ◽  
Mohamed E. El-Khouly ◽  
Maged El-Kemary ◽  
Mohamed S. Ramadan ◽  
Mamdouh S. Masoud
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Visible Light ◽  
Aqueous Medium ◽  
Visible Light Irradiation ◽  
Self Assembly ◽  
High Photocatalytic Activity ◽  
Water Soluble ◽  
Dye Pollutants ◽  
Water Soluble Porphyrin

We reported herein the supramolecular self-assembly of a water soluble porphyrin TMPyP on the surface of graphene oxide and its high photocatalytic activity for degradation of mixed dye pollutants in water under visible light irradiation.

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