Selective laser-induced preparation of metal-semiconductor nanocomposites and application for enhanced photocatalytic performance in the degradation of organic pollutants

2021 ◽  
Vol 867 ◽  
pp. 159062 ◽  
Author(s):  
Yang Li ◽  
Shuhan Li ◽  
Chao He ◽  
Chenwei Zhu ◽  
Qingzhou Li ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Photocatalytic Performance ◽  
Semiconductor Nanocomposites

The influence of ZnO loading amount on the photocatalytic performance of Fe3O4@SiO2@ZnO–Ag composites toward the degradation of organic pollutants and hydrogen evolution

2021 ◽  
Author(s):  
Jian Wang ◽  
Junlin Zhong ◽  
Jinghai Yang ◽  
Xin Qu ◽  
Yukai Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Organic Pollutants ◽  
Shell Structure ◽  
Photocatalytic Performance ◽  
Core Shell ◽  
Photocatalytic Ability ◽  
Core Shell Structure ◽  
Loading Amount

Magnetically reusable Fe3O4@SiO2@ZnO-Ag with well-designed core-shell structure, controllable ZnO loading amount and excellent photocatalytic ability toward organic pollutants degradation and hydrogen evolution were synthesized.

Effective Cocatalyst Pt/PtO Nanodots on La2O3 Microspheres for Degradation of Methyl Orange

2020 ◽  
Vol 20 (5) ◽  
pp. 3140-3147 ◽  
Author(s):  
Zehao Zhao ◽  
Jiaolong Liu ◽  
Ming Qin ◽  
Kaichang Kou ◽  
Guanglei Wu ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Organic Pollutants ◽  
Rate Constant ◽  
Shell Structure ◽  
Photocatalytic Performance ◽  
Xps Analysis ◽  
Sem Images ◽  
Promising Strategy ◽  
Xrd Patterns ◽  
Degradation Of Methyl Orange

Platinum (Pt) has been intensively studied as an effective cocatalyst for photocatalysis, but most reports have focused on metallic Pt rather than PtO. Here, Pt/PtO nanodots were deposited on porous yolk–shell La2O3 microspheres. XRD patterns and XPS analysis demonstrated the coexistence of Pt and PtO, which was beneficial for photocatalytic performance. SEM images showed the yolk–shell structure of La2O3, and TEM images demonstrated that the Pt/PtO nanodots were uniformly distributed on the La2O3 microspheres. The rate constant of the hybrid was calculated to be 0.00656 min−1 for methyl orange (MO) degradation, while that of bare La2O3 was only 0.00303 min−1. This work suggests that the use of the deposited cocatalyst Pt/PtO on La2O3 microspheres is a promising strategy for the degradation of organic pollutants.

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