scholarly journals Engineering of highly active Au/Pd supported on hydrogenated urchin-like yolk@shell TiO2 for visible light photocatalytic Suzuki coupling

2019 ◽  
Vol 9 (14) ◽  
pp. 3820-3827 ◽  
Author(s):  
Sahar Rohani ◽  
Abolfazl Ziarati ◽  
Ghodsi Mohammadi Ziarani ◽  
Alireza Badiei ◽  
Thomas Burgi

An engineered hydrogenated urchin-like yolk@shell TiO2 structure decorated with Au/Pd nanoparticles was designed via sequential steps and employed in visible light photocatalytic Suzuki coupling.

2014 ◽  
Vol 148 (3) ◽  
pp. 896-902 ◽  
Author(s):  
Yang Rong Yao ◽  
Wan Zhen Huang ◽  
Huan Zhou ◽  
Hao Yong Yin ◽  
Yi Fan Zheng ◽  
...  

2015 ◽  
Vol 51 (88) ◽  
pp. 15990-15993 ◽  
Author(s):  
Ferdinando Costantino ◽  
Riccardo Vivani ◽  
Maria Bastianini ◽  
Luca Ortolani ◽  
Oriana Piermatti ◽  
...  

PdNPs stabilized on exfoliated layered zirconium phosphate–carboxyphosphonate nanosheets as an efficient catalytic system for the Suzuki coupling.


2017 ◽  
Vol 7 (4) ◽  
pp. 961-967 ◽  
Author(s):  
Cong-Cong Shen ◽  
Ya-Nan Liu ◽  
Xiao Zhou ◽  
Hong-Li Guo ◽  
Zhi-Wei Zhao ◽  
...  

Cocatalyst-free Zn0.5Cd0.5S (ZnCdS-CH) is synthesized through a two-step process as a highly active and stable photocatalyst for visible-light hydrogen evolution.


2017 ◽  
Vol 11 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Jian Zhang ◽  
Xuefeng Bai

A facile and efficient method was developed for the synthesis of highly active palladium nanoparticles (PdNPs) by microwave-assisted chemical reduction. The PdNPs with different morphology were prepared with or without KBr (capping agent) using ethylene glycol (EG) and citric acid (CA) as reducing agent in the presence of polyvinylpyrrolidone (PVP), respectively. The as-prepared PdNPs were characterized by (UV-Visible Spectrophotometer) UV-Vis, transmission electron microscopy (TEM) and X-ray diffraction (XRD) analysis. The results showed that the PdNPs reduced by EG without KBr (PdNPs-EG) has smaller particle size than other PdNPs. The remarkable catalytic activity of the PdNPs catalysts are obtained using a low amount of PdNPs (0.1 mmol‰) using K2CO3 as base and EtOH/H2O as solvent toward Suzuki coupling reactions of aryl bromides and phenylboronic acid for 15 min.


RSC Advances ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 3396-3402 ◽  
Author(s):  
Youzhi Cao ◽  
Xinbo Jing ◽  
Yajuan Chen ◽  
Wenjie Kang ◽  
Shufen Wang ◽  
...  

Designing a highly active and stable photocatalyst to directly solve environmental pollution is desirable for solar energy conversion.


2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Fan Dong ◽  
Yanjuan Sun ◽  
Min Fu

V2O5cluster-modified N-doped TiO2(N-TiO2/V2O5) nanocomposites photocatalyst was prepared by a facile impregnation-calcination method. The effects of V2O5cluster loading content on visible light photocatalytic activity of the as-prepared samples were investigated for degradation of toluene in air. The results showed that the visible light activity of N-doped TiO2was significantly enhanced by loading V2O5clusters. The optimal V2O5loading content was found to be 0.5 wt.%, reaching a removal ratio of 52.4% and a rate constant of 0.027 min−1, far exceeding that of unmodified N-doped TiO2. The enhanced activity is due to the deposition of V2O5clusters on the surface of N-doped TiO2. The conduction band (CB) potential of V2O5(0.48 eV) is lower than the CB level of N-doped TiO2(−0.19 V), which favors the photogenerated electron transfer from CB of N-doped TiO2to V2O5clusters. This function of V2O5clusters helps promote the transfer and separation of photogenerated electrons and holes. The present work not only displays a feasible route for the utilization of low cost V2O5clusters as a substitute for noble metals in enhancing the photocatalysis but also demonstrates a facile method for preparation of highly active composite photocatalyst for large-scale applications.


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