Highly Selective Oxidation Monosaccharides to Sugar Acids at Room Temperature over Palladium Supported on Surface Functionalized Carbon Nanotubes

2021 ◽  
Author(s):  
Zengyong Li ◽  
Di Li ◽  
Wu Lan ◽  
Xuehui Li ◽  
Xiaofang Wan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Selective Oxidation ◽  
Room Temperature ◽  
Efficient Catalyst ◽  
Functionalized Carbon Nanotubes

Selective oxidation of monosaccharides into sugar acids is an important reaction for the production of biomass-based chemicals, but the design of efficient catalyst remains a big challenge. Herein, we report...

scholarly journals Effect of Functionalized Carbon Nanotubes in the Detection of Benzene at Room Temperature

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Nurjahirah Janudin ◽  
Norli Abdullah ◽  
Wan Md Zin Wan Yunus ◽  
Faizah Md Yasin ◽  
Mohd Hanif Yaacob ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Acid Treatment ◽  
Room Temperature ◽  
Functional Group ◽  
Group Performance ◽  
Active Area ◽  
Functionalized Carbon Nanotubes ◽  
Sensing Material

In this paper, carbon nanotubes (CNTs) were functionalized by acid treatment and further functionalized with dodecylamine and were designated as CNT-carboxylic and CNT-amide, respectively. Then, functionalized CNTs produced were characterized with various methods to verify the attachment of a functional group. Performance of the functionalized CNTs in the detection of benzene gas was monitored at room temperature. The sample was dropped cast on the interdigitated transducer (IDT), and the changes in resistivity were recorded by a digital multimeter in a customized chamber under controlled humidity (∼55%) environment. Based on the findings, it showed that the functionalized CNTs provide an extra active area for interaction between the gas analyte and CNTs, thus increasing their response and improving the sensitivity of the sensing material.

The synthesis of functionalized carbon nanotubes by hyperbranched poly(amine-ester) with liquid-like behavior at room temperature

Polymer ◽  
2009 ◽  
Vol 50 (13) ◽  
pp. 2953-2957 ◽  
Author(s):  
Jiaoxia Zhang ◽  
Yaping Zheng ◽  
Peiying Yu ◽  
Su Mo ◽  
Rumin Wang
Keyword(s):  
Carbon Nanotubes ◽  
Room Temperature ◽  
Functionalized Carbon Nanotubes ◽  
Hyperbranched Poly

scholarly journals Co3O4-decorated carbon nanotubes as a novel efficient catalyst in the selective oxidation of benzoins

2014 ◽  
Vol 17 (9) ◽  
pp. 958-963 ◽  
Author(s):  
Javad Safari ◽  
Zahra Mansouri Kafroudi ◽  
Zohre Zarnegar
Keyword(s):  
Carbon Nanotubes ◽  
Selective Oxidation ◽  
Efficient Catalyst

Metal-functionalized carbon nanotubes for biomass conversion: base-free highly efficient and recyclable catalysts for aerobic oxidation of 5-hydroxymethylfurfural

2019 ◽  
Vol 43 (26) ◽  
pp. 10601-10609 ◽  
Author(s):  
Poonam Sharma ◽  
Mohit Solanki ◽  
Rakesh K. Sharma
Keyword(s):  
Carbon Nanotubes ◽  
Selective Oxidation ◽  
Noble Metal ◽  
Catalytic System ◽  
Biomass Conversion ◽  
Aerobic Oxidation ◽  
Functionalized Carbon Nanotubes ◽  
Highly Efficient ◽  
Recyclable Catalysts ◽  
Furandicarboxylic Acid

A noble and non-noble metal-confined CNT-based catalytic system was developed for the base-free selective oxidation of 5-hydroxymethylfurfural to produce 2,5-furandicarboxylic acid and 2,5-diformylfurane.

scholarly journals Synthesis of Phosphonated Carbon Nanotubes: New Insight into Carbon Nanotubes Functionalization

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2726
Author(s):  
Małgorzata Nadolska ◽  
Marta Prześniak-Welenc ◽  
Marcin Łapiński ◽  
Kamila Sadowska
Keyword(s):  
Carbon Nanotubes ◽  
Photoelectron Spectroscopy ◽  
Room Temperature ◽  
Spectroscopy Analysis ◽  
Functionalized Carbon Nanotubes ◽  
X Ray ◽  
Uv Illumination ◽  
First Time ◽  
Insight Into ◽  
Microscopic Surface

Carbon nanotubes were successfully functionalized for the first time in a free radical phosphonylation reaction. Three synthetic protocols were proposed. Carbon nanotubes and diethylphosphite reacted in the presence of known radical initiator, such as azobisisobutyronitrile, single electron oxidant—Mn(OAc)3, or under UV radiation. The functionalized material was fully characterized by means of spectroscopic methods, together with microscopic, surface area and thermogravimetric analyses. UV-illumination was found to be the most effective approach for introducing phosphonates onto carbon nanotubes. X-ray photoelectron spectroscopy analysis showed 6% phosphorus in this sample. Moreover, the method was performed at room temperature for only one hour, using diethylphosphite as a reactant and as a solvent. The functionalized carbon nanotubes showed an improved thermal stability, with a decomposition onset temperature increase of more than 130 °C. This makes it very promising material for flame retarding applications.

Fast and Selective Room-Temperature Ammonia Sensors Using Silver Nanocrystal-Functionalized Carbon Nanotubes

2012 ◽  
Vol 4 (9) ◽  
pp. 4898-4904 ◽  
Author(s):  
Shumao Cui ◽  
Haihui Pu ◽  
Ganhua Lu ◽  
Zhenhai Wen ◽  
Eric C. Mattson ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Room Temperature ◽  
Functionalized Carbon Nanotubes ◽  
Ammonia Sensors
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