Cocatalyst-Free Photocatalysts for Efficient Visible-Light-Induced H2 Production: Porous Assemblies of CdS Quantum Dots and Layered Titanate Nanosheets

2011 ◽  
Vol 21 (16) ◽  
pp. 3111-3118 ◽  
Author(s):  
Hyo Na Kim ◽  
Tae Woo Kim ◽  
In Young Kim ◽  
Seong-Ju Hwang
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
H2 Production ◽  
Cds Quantum Dots ◽  
Layered Titanate ◽  
Titanate Nanosheets

scholarly journals MOF-Derived Porous Fe2O3 Nanoparticles Coupled with CdS Quantum Dots for Degradation of Bisphenol A under Visible Light Irradiation

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1701 ◽  
Author(s):  
Ruowen Liang ◽  
Zhoujun He ◽  
Chen Zhou ◽  
Guiyang Yan ◽  
Ling Wu
Keyword(s):  
Quantum Dots ◽  
Bisphenol A ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
High Performance ◽  
Energy Levels ◽  
Light Irradiation ◽  
Cds Quantum Dots ◽  
Endocrine Disrupting Chemical ◽  
Cds Qds

In this work, CdS quantum dots (QDs) were planted on magnetically recyclable porous Fe2O3 (denoted as F450) to obtain CdS QDs/porous Fe2O3 hybrids (denoted as X–CdS/F450, in which X is the immersion times of CdS QDs). Porous Fe2O3 was first obtained by pyrolysis from an iron-containing metal–organic framework by a two-step calcination method. Next, CdS QDs (of average size 3.0 nm) were uniformly and closely attached to the porous F450 via a sequential chemical-bath deposition strategy. As expected, the X–CdS/F450 hybrids serve as high-performance photocatalysts for the degradation of bisphenol A, a typical endocrine-disrupting chemical. Almost ∼100% of the bisphenol A was degraded over 5-CdS/F450 after visible light irradiation for 30 min (λ ≥ 420 nm). In comparison, the degradation efficiency of pure F450 powder is 59.2%. The high performance of 5-CdS/F450 may be ascribable to the fast electron transport of porous F450, the intense visible-light absorption of the CdS QDs and the matched energy levels between CdS and F450. More significantly, through the photocatalytic degradation reaction, the X–CdS/F450 hybrids can easily be recovered magnetically and reused in subsequent cycles, indicating their stability and recyclability.

Ligand-Controlled Photocatalysis of CdS Quantum Dots for Lignin Valorization under Visible Light

ACS Catalysis ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 8443-8451 ◽  
Author(s):  
Xuejiao Wu ◽  
Shunji Xie ◽  
Chenxi Liu ◽  
Cheng Zhou ◽  
Jinchi Lin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Cds Quantum Dots ◽  
Lignin Valorization
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