scholarly journals Photocatalytic Removal of Antibiotics on g-C3N4 Using Amorphous CuO as Cocatalysts

2021 ◽  
Vol 9 ◽  
Author(s):  
Yue Zhao ◽  
Amir Zada ◽  
Yang Yang ◽  
Jing Pan ◽  
Yan Wang ◽  
...  

Amorphous CuO is considered as an excellent cocatalyst, owing to its large surface area and superior conductivity compared with its crystalline counterpart. The current work demonstrates a facile method to prepare amorphous CuO, which is grown on the surface of graphitic carbon nitride (g-C3N4) and is then applied for the photocatalytic degradation of tetracycline hydrochloride. The prepared CuO/g-C3N4 composite shows higher photocatalytic activities compared with bare g-C3N4. Efficient charge transfer between g-C3N4 and CuO is confirmed by the photocurrent response spectra and photoluminescence spectra. This work provides a facile approach to prepare low-cost composites for the photocatalytic degradation of antibiotics to safeguard the environment.

Nanoscale ◽  
2020 ◽  
Vol 12 (39) ◽  
pp. 20220-20229
Author(s):  
Qian Guo ◽  
Hui Luo ◽  
Jifang Zhang ◽  
Qiushi Ruan ◽  
Arun Prakash Periasamy ◽  
...  

We developed a carbon underlayer from low-cost carbon dots between FTO and hematite photoanodes. The bulk and interfacial charge transfer dynamics of hematite are greatly improved, leading to a remarkable enhancement in the photocurrent response.


2017 ◽  
Vol 10 (2) ◽  
pp. 109-117 ◽  
Author(s):  
Dnyaneshwar R. Shinde ◽  
Popat S. Tambade ◽  
Manohar G. Chaskar ◽  
Kisan M. Gadave

Abstract. In this study, we evaluated the photocatalytic activities of analytical reagent (AR) grade ZnO, TiO2, and SnO2 to identify a low-cost photocatalyst for dye degradation. The obtained samples of ZnO, TiO2, and SnO2 were characterised by X-ray diffractogram (XRD), scanning electron microscope imaging, and UV-VIS diffuse reflectance spectroscopy. The decolourisation of three structurally diverse dyes, namely crystal violet, basic blue, and methyl red under solar irradiation, was used to evaluate the photocatalytic activities of three metal oxides. The photocatalytic activities of the received three metal oxides were tested with the photocatalytic degradation of dyes and compared with Degussa P-25. Dye solutions with each metal oxide at initial pH 9 were subjected to irradiation under sunlight and monitored for up to the stage of complete decolourisation. The results indicate that ZnO exhibited the highest photocatalytic activity as compared to TiO2 and SnO2 as well as that of Degussa P-25 (TiO2). The photocatalytic dye decolourisation rates with ZnO were 1.14–1.35, 1.70–3.1, and 4–8.5 times higher than those of the Degussa P-25, TiO2, and SnO2, respectively. The percentage COD removal was studied for ZnO and partial removal was observed at the decolourisation stage. To enhance photocatalytic activity of AR grade ZnO, it was loaded with Ag metal and about 20 % enhancement in the activity was observed.


RSC Advances ◽  
2020 ◽  
Vol 10 (57) ◽  
pp. 34806-34814 ◽  
Author(s):  
A. M. Ismael ◽  
A. N. El-Shazly ◽  
S. E. Gaber ◽  
M. M. Rashad ◽  
A. H. Kamel ◽  
...  

A TiO2/GO/CuFe2O4 heterostructure photocatalyst is fabricated by a simple and low cost ball milling pathway for enhancing the photocatalytic degradation of chlorinated pesticides under UV light irradiation.


2020 ◽  
Vol 8 (40) ◽  
pp. 20963-20969 ◽  
Author(s):  
Wei Chen ◽  
Guo-Bo Huang ◽  
Hao Song ◽  
Jian Zhang

An efficient charge transfer channel for improving the photocatalytic water splitting activity and durability of CdS without sacrificial agents.


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