CO oxidation and the inhibition effects of carboxyl-modification and copper clusters on multi-walled carbon nanotubes

Baharudin, Luqmanulhakim; Yip, Alex C.K.; Golovko, Vladimir B.; Polson, Matthew I. J.; Aguey‐Zinsou, Kondo‐François; Watson, Matthew J.

doi:10.1016/j.apcatb.2019.118265

Cited by 14 publications

(4 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The occurrence of the C═O and C─O stretching modes of vibration was explained by the presence of two extra peaks at 1745 and 1163 cm −1 in the f‐MWCNTs spectra shown in Figure 3 (curve b) [38]. The absorption peak at 1636 cm −1 was attributed to the stretching of the ─CH 2 ─ group in the hexagonal lattice of the carbon nanotube backbone, and the peak at 2922 cm −1 , which denoted the presence of a long‐chain alkyl molecule, to the C─H stretch modes of the H─C═O in the carbonyl group [37].…”

Section: Resultsmentioning

confidence: 99%

“…A large peak at 3464 cm −1 was observed for the O‐H stretching of the hydroxyl group from carboxyl groups (O═C─OH and C─OH). The partial oxidation that occurred during the purification p‐MWCNTs left them with carboxyl groups on their surface [37]. The occurrence of the C═O and C─O stretching modes of vibration was explained by the presence of two extra peaks at 1745 and 1163 cm −1 in the f‐MWCNTs spectra shown in Figure 3 (curve b) [38].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Upcycling prawn shells: Chitosan–carbon nanotube nanocomposites with boosted magnetic and electrical properties

Awal,

Al‐Mamun,

Jewena

et al. 2024

Micro & Nano Letters

View full text Add to dashboard Cite

Multi‐walled carbon nanotubes (MWCNTs) were successfully synthesized and functionalized by chemical vapour deposition and acid reflux methods, respectively. Chitosan (CTS) was prepared by a chemical extraction method from waste prawn shells. Various weight fractions of functionalized multi‐walled carbon nanotubes (f‐MWCNTs) have been used as reinforcing agent in CTS biopolymer matrix. Fourier transform infrared spectroscopy analysis was done, which confirms the presence of absorption bands of the various functional groups of chitin, CTS, and MWCNTs. Raman spectra revealed the quality of MWCNTs, the extent of their functionalization, and the quality of nanocomposites. The X‐ray diffraction analysis showed the distinctive peaks for f‐MWCNTs’ and also revealed the formation of CTS/f‐MWCNTs nanocomposites. Transmission Electron Microscopy (TEM) analysis also exhibited that the CTS/f‐MWCNTs nanoparticles have a well‐defined crystalline structure. The highest coercivity and magnetization (Ms) of the CTS/5%f‐MWCNTs nanocomposite are 602 Oe and 0.1202 emu/g, respectively that have been enhanced by 3.83 and 5.27 times compared to the pure CTS respectively. It showed that the conductivity is getting higher with the addition of f‐MWCNTs in the CTS matrix. CTS/5% f‐MWCNTs composites exhibit the highest conductivity than other composites and the conductivity of CTS/5% f‐MWCNTs composite is 4.0×10−4 S/m.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Upcycling prawn shells: Chitosan–carbon nanotube nanocomposites with boosted magnetic and electrical properties

Awal,

Al‐Mamun,

Jewena

et al. 2024

Micro & Nano Letters

View full text Add to dashboard Cite

show abstract

“…Carbon nanotubes have been widely used as fillers to enhance the performance of rubbers because of their remarkable thermal, 12 mechanical, 16 and electrical properties. [17][18][19] In addition, carbon nanotube-based compound materials have a strong intrinsic antioxidant effect, showing a huge potential ability to enhance the thermal-oxidative stability of polymers. However, it cannot be well dispersed in the most rubbers due to that carbon nanotubes (CNTs) are easily entangled with each other.…”

Section: Introductionmentioning

confidence: 99%

Balancing anti‐migration and anti‐aging behavior of binary antioxidants for high‐performance 1,2‐polybutadiene rubber

Han

Geng

Wang

et al. 2022

Polymers for Advanced Techs

View full text Add to dashboard Cite

For rubber materials, the antioxidants are significant for maintaining the long service life when suffering from external stimuli. However, the common low-molecularweight antioxidants easily migrate to the rubber surface and lose the anti-aging effect. In this work, we develop highly anti-migration hindered phenolic antioxidants, which have been obtained by covalently grafting 3,5-di-tert-butyl-4-hydroxybenzoic acid (AO) onto carbon nanotubes (CNTs). To improve the adhesion of AO and CNTs, the polydopamine with the potential reactive functional groups was linked between antioxidants and CNTs by mussel biomimetic strategy. The binary antioxidants integrated the good reinforcement and dispersity of CNTs with the anti-aging characteristics of hindered phenol. What is more, the experimental results indicate that the total loading efficiency of AO could reach 11.7 wt%. The 1,2-Polybutadiene/CNTs-AO composites could be stored in a thermal oxidation environment for 15 days with minimal degradation of mechanical properties. This strategy proposed herein provides insights into the development of highly anti-migration and anti-aging antioxidants by a simple, cost-effective, and pollution-free method.

show abstract

“…However, the uniform dispersion of CNT particles in polymer matrix remains a considerable challenge, accounting for the fact that the high aspect ratio of nanotubes and large van der Waals force among tubes easily accelerate the entanglement of CNTs [15,16]. Over the past few decades, tremendous efforts have been devoted to surface modification of CNTs via the covalent and noncovalent strategies [17][18][19]. But unfortunately, the strategies show inevitable disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Well-Distributed Polysilsesquioxane-Modified Carbon Nanotubes for Thermal Conductive Insulating Silicone Rubbers

Han

Wang

Hua

et al. 2022

Advances in Polymer Technology

View full text Add to dashboard Cite

Despite carbon nanotubes (CNTs) have garnered tremendous research interests for enhancing the electrical and thermal conductivity of polymers, it is still a considerable challenge to achieve the uniform dispersion of carbon nanotubes in polymer matrix. Herein, inspired by the mussel-inspired chemistry, we adopted the strategy of coating CNTs with polydopamine. And the polysilsesquioxane-modified CNTs (CNTs-PSQ) were obtained based on the click chemistry reaction. The FT-IR, Raman, XRD, and TGA collectively demonstrated the successful modification of PSQ on the surface of CNTs. The incorporation of PSQ could significantly improve the dispersion of CNTs in the silicon rubbers, and a strong interfacial interaction was formed between CNTs-PSQ and silicon rubber matrix, as observed from TEM images of silicon rubber/CNTs-PSQ nanocomposites. Meanwhile, compared with the nanocomposites with neat CNTs, the ones with CNTs-PSQ exhibited simultaneously improved electrical conductivity and insulating performance. This strategy proposed for the preparation of PSQ-modified CNTs provides insights toward highly insulating and thermal conducting polymers.

show abstract

CO oxidation and the inhibition effects of carboxyl-modification and copper clusters on multi-walled carbon nanotubes

Cited by 14 publications

References 54 publications

Upcycling prawn shells: Chitosan–carbon nanotube nanocomposites with boosted magnetic and electrical properties

Upcycling prawn shells: Chitosan–carbon nanotube nanocomposites with boosted magnetic and electrical properties

Balancing anti‐migration and anti‐aging behavior of binary antioxidants for high‐performance 1,2‐polybutadiene rubber

Well-Distributed Polysilsesquioxane-Modified Carbon Nanotubes for Thermal Conductive Insulating Silicone Rubbers

Contact Info

Product

Resources

About