Chloride promoted room temperature preparation of silver nanoparticles on two dimensional tungsten oxide nanoarchitectures for the catalytic oxidation of tertiary N-compounds to N-oxides

Nanoscale ◽  
2015 ◽  
Vol 7 (37) ◽  
pp. 15197-15208 ◽  
Author(s):  
Shilpi Ghosh ◽  
Shankha S. Acharyya ◽  
Malika Kumar ◽  
Rajaram Bal
Keyword(s):  
Silver Nanoparticles ◽  
Tungsten Oxide ◽  
Room Temperature ◽  
Catalytic Performance ◽  
Two Dimensional ◽  
Facile Synthesis ◽  
Wide Range ◽  
Synthesis Protocol ◽  
N Compounds ◽  
Temperature Preparation

A halide ion promoted 2D silver tungsten-based nanoarchitecture, synthesized by a facile synthesis protocol, exhibited high catalytic performance for the production of a wide range of N-oxides.

Room temperature selective oxidation of aniline to azoxybenzene over a silver supported tungsten oxide nanostructured catalyst

2015 ◽  
Vol 17 (3) ◽  
pp. 1867-1876 ◽  
Author(s):  
Shilpi Ghosh ◽  
Shankha S. Acharyya ◽  
Takehiko Sasaki ◽  
Rajaram Bal
Keyword(s):  
Silver Nanoparticles ◽  
Tungsten Oxide ◽  
Selective Oxidation ◽  
Oxidative Coupling ◽  
Room Temperature ◽  
Heterogeneous Catalysts ◽  
Nanostructured Catalyst ◽  
Important Chemical

Heterogeneous catalysts comprising silver nanoparticles supported on nanostructured tungsten oxide were applied for room temperature oxidative coupling of aniline to azoxybenzene, an important chemical intermediate and a chemical of industrial interest.

Two-dimensional CaO/carbon heterostructures with unprecedented catalytic performance in room-temperature H2S oxidization

2021 ◽  
Vol 280 ◽  
pp. 119444
Author(s):  
Yankai Pan ◽  
Mingqi Chen ◽  
Zhe Su ◽  
Kede Wu ◽  
Yayun Zhang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Catalytic Performance ◽  
Two Dimensional

Facile Synthesis of 4,5-Dihydro-1,3,4-Thiadiazoles by 1,3-Dipolar Cycloaddition of Thioisomünchnones

2009 ◽  
Vol 62 (4) ◽  
pp. 356 ◽  
Author(s):  
Bárbara Sánchez ◽  
José Luis Bravo ◽  
María Josí Arívalo ◽  
Ignacio López ◽  
Mark E. Light ◽  
...  
Keyword(s):  
Structure Analysis ◽  
Structure Elucidation ◽  
Room Temperature ◽  
Dipolar Cycloaddition ◽  
Two Dimensional ◽  
Facile Synthesis ◽  
X Ray ◽  
Mild Conditions ◽  
Nmr Techniques

The present paper summarizes a straightforward synthesis of 4,5-dihydro-1,3,4-thiadiazoles by the 1,3-dipolar cycloaddition of thioisomünchnones. These reactions have been carried out in dichloromethane and are essentially complete within 60 min at room temperature. Under such mild conditions the asymmetric version has been explored as well. Unequivocal structure elucidation has been accomplished by means of one- and two-dimensional NMR techniques as well as X-ray structure analysis.

Growth of au on a ge (111) surface

1992 ◽  
Vol 50 (2) ◽  
pp. 1434-1435
Author(s):  
D.N. Dunn ◽  
P. Xu ◽  
L.D. Marks
Keyword(s):  
Growth Mechanism ◽  
Noble Metals ◽  
Room Temperature ◽  
Annealing Temperature ◽  
Two Dimensional ◽  
Temperature Growth ◽  
Wide Range ◽  
Device Applications

The growth of noble metals such as Au and Ag on Si and Ge is of considerable interest for modern semi-conductor device applications. Several groups have investigated the room temperature growth of Au films on Ge (111) substrates using RHEED, LEED, UPS, as well as other techniques. It is clear from these investigations that the growth of Au on Ge (111) proceeds by a mechanism contrary to what might be expected by comparison to the growth of Au on Si (111). In general most of these studies have looked in two regimes, the first being simple room temperature growth over a wide range of Au coverages from a few tenths of a monolayer up to 100 Å in thickness. The second regime is the behavior of these Au films as a function of annealing temperature. Using RHEED and LEED to study a wide range of Au coverages, Le Lay and coworkers have found that the growth mechanism of Au films proceeds by the appearance of two dimensional close packed domains which do not completely cover the surface.

Facile Synthesis of Hierarchical CuO Microspheres and their Gas Sensing Properties for NOx at Room Temperature

2015 ◽  
Vol 68 (10) ◽  
pp. 1569 ◽  
Author(s):  
Wanzhen Song ◽  
Hongyuan Wu ◽  
Jingchao Wang ◽  
Yufei Lin ◽  
Jiabao Song ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Gas Diffusion ◽  
Two Dimensional ◽  
Facile Synthesis ◽  
Short Response Time ◽  
Gas Sensing Properties ◽  
Gas Response ◽  
Cuo Microspheres ◽  
Unique Hierarchical Structure

In this research, hierarchical CuO microspheres have been successfully synthesised by a facile reflux method. Scanning electron microscopy results clearly revealed that the hierarchical CuO microspheres were composed of two-dimensional nanosheets. The morphology of the prepared products could be tailored by changing the precursor concentration. The CuO-2 sample shows a higher NOx gas sensing performance with a low detection limit of 0.97 ppm, high gas response of 64.93 %, and short response time of 5.33 s to 97.0 ppm NOx at room temperature. The CuO-2 sensor also presents good selectivity and stability. The significantly improved gas response was concluded to be related to the well aligned microstructures and the improved conductivity of the CuO-2 sample. The unique hierarchical structure allows effective and rapid gas diffusion towards the sensing surfaces. In addition, the sensing mechanism based on the hierarchical CuO microspheres is discussed.

Room-temperature wide-range photoluminescence and semiconducting characteristics of two-dimensional pure metallic Zn nanoplates

RSC Advances ◽  
2012 ◽  
Vol 2 (5) ◽  
pp. 2123 ◽  
Author(s):  
Jin-Han Lin ◽  
Yong-Jie Huang ◽  
Yan-Ping Su ◽  
Che-An Liu ◽  
Rupesh S. Devan ◽  
...  
Keyword(s):  
Room Temperature ◽  
Two Dimensional ◽  
Wide Range

Magnetic, recyclable PtyCo1−y/Ti3C2X2 (X = O, F) catalyst: a facile synthesis and enhanced catalytic activity for hydrogen generation from the hydrolysis of ammonia borane

2017 ◽  
Vol 41 (7) ◽  
pp. 2793-2799 ◽  
Author(s):  
Guangyin Fan ◽  
Xiaojing Li ◽  
Yuling Ma ◽  
Yun Zhang ◽  
Jiangtao Wu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Room Temperature ◽  
Hydrogen Generation ◽  
Ammonia Borane ◽  
Catalytic Performance ◽  
Facile Synthesis ◽  
Hydrolysis Of ◽  
Excellent Catalytic Performance ◽  
Magnetic Recyclable

Magnetic recyclable PtyCo1−y/Ti3C2X2 (X = O, F) catalyst exhibits excellent catalytic performance for the hydrolysis of AB at room temperature.

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