Article
Biochemical Research Methods
Sonam Bajaj, Vanshika Jain, Niharika Sharma, Shelja Tiwari, Reena Saxena
Summary: Two hyphenated flow injection-solid phase extraction-FAAS systems using multiwalled carbon nanotubes for Pb(II) preconcentration were proposed, achieving high preconcentration factor and low detection limit through optimization of chemical and hydrodynamic parameters.
JOURNAL OF CHROMATOGRAPHY A
(2021)
Article
Polymer Science
Shereen Fathy Abo-Zahra, Islam Mohamed Abdelmonem, Tharwat Essa Siyam, Ahmed Momen El-Masry, Hossam Mohamed Abdel-Aziz
Summary: Polyacrylamide/functionalized multiwalled carbon nanotubes (PAAm/FMWCNTs) composites were prepared using different polymerization techniques with gamma radiation as an initiator. The composites showed high adsorption capacities for Cu(II) metal ions under various experimental conditions. Adsorption process was found to be endothermic and the desorption studies demonstrated good adsorption/desorption performance.
Article
Nanoscience & Nanotechnology
Thaar M. D. Alharbi, Amjad E. H. Alotaibi, Dechao Chen, Qin Li, Colin L. Raston
Summary: Conventional batch processing for unzipping MWCNTs faces challenges in terms of discontinuity, safety and environmental concerns, reproducibility, and scalability. We have developed a scalable and safe continuous-flow process for unzipping MWCNTs, achieving a 75% yield under flow conditions without any auxiliary reagents. This process utilizes a mild oxidant, aqueous hydrogen peroxide, and harnesses mechanical energy in a vortex fluidic device (VFD) operating at ambient temperature. The physical properties of the unzipped MWCNTs were analyzed using various analytical techniques.
ACS APPLIED NANO MATERIALS
(2022)
Article
Environmental Sciences
Krassimira Ilieva-Makulec, Anna Augustyniuk-Kram, Izabella Olejniczak, Kamil Karaban, Marek Nowicki, Tomasz Runka, Andrzej Kulczycki, Jaroslaw Kaluzny
Summary: The study found that multiwalled carbon nanotubes had a potential impact on soil organisms, especially with higher sensitivity in nematodes. Contamination by CNTs significantly affected the dynamics and diversity of soil fauna and microbial communities, potentially leading to long-term consequences for soil functioning and nutrient cycling.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Electrical & Electronic
K. R. V. Subramanian, K. Tejas, Raji George, Jay Porwal, B. Mohammad Zaid, Yash Kusane
Summary: Carbon Nanotubes (CNTs) are carbon allotropes with superior properties. When fluid flows through the nanotubes, it induces strain and creates a net charge, resulting in a voltage across the nanotubes. This study examines the voltage generated by passing nanofluids through multiwalled CNTs (MWCNTs), demonstrating their potential use in sensor technology and energy conversion devices.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
B. Gopalakrishna, N. Nagaraju, Krishna Ventakesh, Dequan Xiao, N. Kathyayini
Summary: In this study, different composites of multiwalled carbon nanotubes and oxide nanoparticles were prepared and characterized for their physico-chemical properties. Among the composites, MNC-3 exhibited the highest specific capacitance and good stability during cycling tests. By designing a device using MNC-3, significant values of specific capacitance, energy density, and power density were achieved.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Environmental Sciences
Ifeoluwa O. Awogbindin, Ikenna C. Maduako, Isaac A. Adedara, Solomon E. Owumi, Akinola O. Ajeleti, Olatunde Owoeye, Anita K. Patlolla, Paul B. Tchounwou, Ebenezer O. Farombi
Summary: Studies have shown that exposure to multiwalled carbon nanotubes (MWCNTs) can impair liver and kidney function in rats through oxidative stress and inflammation, while treatment with kolaviron (KV) can mitigate these effects by its anti-inflammatory and antioxidant properties.
ENVIRONMENTAL TOXICOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Byungcheon Yoo, Ziwei Xu, Feng Ding
Summary: High-pressure carbon monoxide (HiPCO) synthesized single-walled carbon nanotubes (SWCNTs) were heat treated at high temperatures, resulting in an increase in diameter and the formation of double-, triple-, and multi-walled carbon nanotubes (MWCNTs). Most MWCNTs were found to have an odd number of walls, in accordance with the mechanism of SWCNT bundle coalescence.
Article
Engineering, Environmental
Xingguang Chen, Tingting Xie, Chaoqun Lu, Jiyang Chu, Wenzhe Li, Rui Lin, Dianhui Wu, Qianhui Gu
Summary: An electrochemical sensor based on aminated ZIF-8 and carbon nanotubes was developed for simultaneous detection of lead ions and cadmium ions in water samples. The sensor showed good linear ranges and low detection limits, and exhibited good recovery rates and stability when applied in paddy water and lake water.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Miaoyue Zhang, Scott A. Bradford, Erwin Klumpp, Shizhong Wang, Quan Wan, Chao Jin, Rongliang Qiu, Jir Simunek
Summary: This study investigates the co-transport behavior of functionalized multiwalled carbon nanotubes (MWCNTs) with positively and negatively charged soil nanoparticles in porous media. The presence of negatively charged nanoparticles increased the transport of MWCNTs, while positively charged nanoparticles inhibited the transport. Additionally, it was observed that the presence of MWCNTs facilitated the transport of both positively and negatively charged nanoparticles. Non-DLVO interactions, such as H-bonding and Lewis acid-base interaction, were found to contribute to the deposition and associations between MWCNTs and nanoparticles. This research provides novel insights into the transport of nanoparticles in porous media and emphasizes the importance of considering mutual effects and non-DLVO interactions in evaluating the environmental risk and fate of engineered nanoparticles.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Composites
Yanling Chen, Qin Yao, Sanyin Qu, Wei Shi, Hui Li, Lidong Chen
Summary: In this study, metal Phthalocyanine complex hybrids with single-walled carbon nanotubes were prepared and their thermoelectric properties were investigated. The electrical conductivity of the hybrids increased significantly with higher SWCNT content, surpassing values predicted by the mixture rule. NiPc/SWCNT hybrids exhibited the highest electrical conductivity, with the lowest interface energy barrier contributing to this enhancement.
COMPOSITES COMMUNICATIONS
(2021)
Article
Energy & Fuels
Dharmendra Kumar Yadav, Fatin Saiha Omar, Mamta Yadav, Xian Liang Ho, Malcolm E. Tessensohn, K. Ramesh, S. Ramesh, Richard D. Webster, Vellaichamy Ganesan
Summary: In the field of renewable energy research, MWCNTs-ZrO2-Co3O4 has been successfully employed as a catalyst and supercapacitor material, demonstrating efficient and stable performance.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Paper & Wood
Vasuki Durairaj, Touko Liljestrom, Niklas Wester, Peter Engelhardt, Sami Sainio, Benjamin P. Wilson, Panpan Li, Katri S. Kontturi, Tekla Tammelin, Tomi Laurila, Jari Koskinen
Summary: This study comprehensively investigates the influence of nanocellulosic material properties on the electroanalytical performance of nanocellulose/CNT hybrid electrodes. By manipulating the functionalization and geometry of cellulose nanocrystals, cellulose nanofibers, and TEMPO-oxidized cellulose nanofibers, the optimal combination for hybrid electrode performance is determined. This research demonstrates for the first time the tunability of nanocellulose/CNT hybrid electrodes towards different biomolecules through the selection of nanocellulosic materials.
Article
Chemistry, Analytical
Marcin Musielak, Maciej Serda, Ewa Talik, Anna Gagor, Julia Korzuch, Rafal Sitko
Summary: This study presents a fast and low-cost method for highly selective determination of ultratrace Hg(II) ions using CNT-TSC. Through DMSPE and TXRF analysis, the method achieves extremely low detection limits and efficient separation. The method also shows potential for effective removal of Hg(II) ions from aqueous solutions.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2021)
Article
Chemistry, Analytical
Nazime Ebrar Karlidag, Rabia Demirel, Hakan Serbest, Fatma Turak, Sezgin Bakirdere
Summary: In this study, a method for the determination of trace levels of cobalt was proposed using a flame atomic absorption spectrophotometry system after magnetic hydrogel based dispersive solid phase extraction. The method showed improved detection power compared to conventional FAAS and demonstrated accuracy in quantification of cobalt in chamomile tea matrix.
ANALYTICAL METHODS
(2022)