scholarly journals In Situ Synthesis of All-Solid-State Z-Scheme BiOBr0.3I0.7/Ag/AgI Photocatalysts with Enhanced Photocatalytic Activity Under Visible Light Irradiation

2018 ◽  
Vol 13 (1) ◽  
Author(s):  
Junlin Lu ◽  
Chaoqun Shang ◽  
Qingguo Meng ◽  
Haiqin Lv ◽  
Zhihong Chen ◽  
...  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Lan Anh Luu Thi ◽  
Mateus Manuel Neto ◽  
Thang Pham Van ◽  
Trung Nguyen Ngoc ◽  
Tuyet Mai Nguyen Thi ◽  
...  

In situ g-C3N4@ZnO nanocomposites (with 0, 1, 3, 5, and 7 wt.% of g-C3N4 in nanocomposite) were synthesized via a one-pot hydrothermal method using precursors of urea, zinc nitrate hexahydrate, and hexamethylenetetramine. The g-C3N4@ZnO nanocomposites were characterized by X-ray diffraction, scanning electron microscope, diffuse reflectance spectroscopy, and photoluminescence spectroscopy. The photocatalyst activity of g-C3N4@ZnO nanocomposites was evaluated via methylene blue degradation experiment under visible light irradiation. The g-C3N4@ZnO nanocomposites showed an enhancement in photocatalytic activity in comparison to pure ZnO which increased with the g-C3N4 content (1, 3, 5, and 7 wt.%) in nanocomposites. The photocatalytic activity reached the highest efficiency of 96.8% when the content of g-C3N4 was 7.0 wt.%. Nanocomposite having 7.0 wt.% of g-C3N4 also showed good recyclability with degradation efficiency higher than 90% even in the 4th use. The improvement of photocatalytic activity could be attributed to the adsorption ability and effective separation of electron-hole pairs between g-C3N4 and ZnO. This work implies a simple method to in situ prepare the nanocomposite material of g-C3N4 and semiconductors oxide for photocatalyst applications with high efficiency and good recyclability.


2021 ◽  
Author(s):  
Di Liu ◽  
Liping CHEN ◽  
Wenbin Chen ◽  
Mengtao Qin ◽  
Siqi Wei

Well-dispersed Pt quantum dots (QDs) was first to be successfully deposited on PDI supramolecular nanorods surface via a simple in situ chemical reduction. Under visible light irradiation, Pt QDs/PDI composites...


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