Structure-Dependent Base-Free Aerobic Oxidation of Benzyl Alcohol over High-Surface-Area Mg-Doped ZnAl2 O4 Spinel Supported Gold Nanoparticles

ChemPlusChem ◽  
2016 ◽  
Vol 82 (2) ◽  
pp. 270-279 ◽  
Author(s):  
Siqi Li ◽  
Wei Li ◽  
Yizhen Li ◽  
Guoli Fan ◽  
Feng Li
RSC Advances ◽  
2015 ◽  
Vol 5 (45) ◽  
pp. 36066-36074 ◽  
Author(s):  
M. Y. Miao ◽  
J. T. Feng ◽  
Q. Jin ◽  
Y. F. He ◽  
Y. N. Liu ◽  
...  

A NiAl-LDH/RGO composite-supported Au catalyst was synthesized and exhibited high activity and stability in the selective oxidation of benzyl alcohol.


2021 ◽  
Author(s):  
Marieme Kacem ◽  
Nadia Katir ◽  
Jamal El Haskouri ◽  
Abdellatif Essoumhi ◽  
Abdelkrim El Kadib

Mesoporous silicas are among the most suitable high-surface area solids to support small-sized metal clusters and nanoparticles. Unfortunately, the instability of silica in water constitutes a serious impedement for its...


Nano LIFE ◽  
2016 ◽  
Vol 06 (02) ◽  
pp. 1642001 ◽  
Author(s):  
Xinjun Yu ◽  
Yang Jiao ◽  
Qinyuan Chai

Gold nanoparticles (AuNPs) as one of the most stable metal nanoparticles have demonstrated extensive applications in recent years. This paper will give a focus on the AuNPs as biosensors, due to their inertness, unique optical properties, high surface area, and various surface functionalization methods. Synthesis of AuNps and the surface functionalization will be discussed in the first part. The size, shape, and stability can be controlled by different synthetic methods, while reductant usually needed. By surface functionalization with different molecules such as polymers, nucleic acids, and proteins, AuNPs will aggregate when specified molecule linkages showing up enables selective detections. The application in biosensing to detect proteins, oligonucleotide, glucose, and heavy metals will be exemplified, followed by the summary and future perspective part in the conclusion.


2016 ◽  
Vol 418-419 ◽  
pp. 41-53 ◽  
Author(s):  
Chiranjit Santra ◽  
Malay Pramanik ◽  
Kyoko K. Bando ◽  
Sudip Maity ◽  
Biswajit Chowdhury

Catalysts ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 847 ◽  
Author(s):  
Seyed Moeini ◽  
Chiara Battocchio ◽  
Stefano Casciardi ◽  
Igor Luisetto ◽  
Paolo Lupattelli ◽  
...  

In the present study, the catalytic activity of palladium oxide (PdOx) supported on ceria nanorods (CeO2-NR) for aerobic selective oxidation of benzyl alcohol (BnOH) to benzaldehyde (PhCHO) was evaluated. The CeO2-NR was synthesized hydrothermally and the Pd(NO3)2 was deposited by a wet impregnation method, followed by calcination to acquire PdOx/CeO2-NR. The catalysts were characterized by X-ray diffraction (XRD), temperature programmed reduction (TPR), transmission electron microscopy (TEM), Brunauer–Emmet–Teller (BET) surface area analysis, and X-ray photoelectron spectroscopy (XPS). In addition, the TPR-reduced PdOx/CeO2-NR (PdOx/CeO2-NR-Red) was studied by XRD, BET, and XPS. Characterizations showed the formation of CeO2-NR with (111) exposed plane and relatively high BET surface area. PdOx (x > 1) was detected to be the major oxide species on the PdOx/CeO2-NR. The activities of the catalysts in BnOH oxidation were evaluated using air, as an environmentally friendly oxidant, and various solvents. Effects of temperature, solvent nature and palladium oxidation state were investigated. The PdOx/CeO2-NR showed remarkable activity when protic solvents were utilized. The best result was achieved using PdOx/CeO2-NR and boiling ethanol as solvent, leading to 93% BnOH conversion and 96% selectivity toward PhCHO. A mechanistic hypothesis for BnOH oxidation with PdOx/CeO2-NR in ethanol is presented.


2014 ◽  
Vol 3 (10) ◽  
pp. M61-M64 ◽  
Author(s):  
Tarek M. Abdel-Fattah ◽  
Alex Wixtrom ◽  
Kai Zhang ◽  
Wei Cao ◽  
Helmut Baumgart

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