Results 231 to 240 of about 643,776 (291)

Controlled synthesis of uniform cup-stacked carbon nanotubes for energy applications

Journal of Alloys and Compounds, 2021
Abstract While carbon nanotubes (CNTs) have been widely used for various energy storage and conversion applications, controlled synthesis of CNTs with desired properties at low cost is still a challenge. Here we report our findings in the development of a controlled synthesis of uniform cup-stacked carbon nanotubes (CSCNTs) using a chemical vapor ...
Yuexia Li, Zhuojie Xiao, Hao Wu, Huichi Zhong, Yaxing Liu, Guizhe Zhao, Yaqing Liu, Jianhuang Zeng   +7 more
openaire   +2 more sources

Electrochemical properties of oxygenated cup-stacked carbon nanofiber-modified electrodes

Phys. Chem. Chem. Phys., 2014
The electrochemical reaction kinetics of Fe2+/3+ and [Fe(CN)6]3−/4− is tunable by controlling the oxygen/carbon atomic ratio at the CSCNF surface.
Seongjae, Ko, Tetsu, Tatsuma, Akiyoshi, Sakoda, Yasuyuki, Sakai, Kikuo, Komori   +4 more
semanticscholar   +4 more sources

Cup‐Stacked Carbon Nanotube Schottky Diodes for Photovoltaics and Photodetectors

Advanced Materials, 2014
High performance optoelectronic devices based on cup-stacked carbon nanotubes are realized. Based on a Schottky barrier model, rectifying behaviors and high photoresponse are observed by using growth catalysts as nanoscale electronic contacts. Similar performances are also obtained and furthermore tuned by using nanotube’s defective surface as ...
Ki-Hwan, Kim, David, Brunel, Aurelien, Gohier, Leandro, Sacco, Marc, Châtelet, Costel-Sorin, Cojocaru   +5 more
openaire   +3 more sources

Controlled direct electron transfer kinetics of fructose dehydrogenase at cup-stacked carbon nanofibers

Phys. Chem. Chem. Phys., 2017
The direct electron transfer kinetics of fructose dehydrogenase was controlled by its orientation at the surface of cup-stacked carbon nanofibers with different atomic oxygen/carbon ratios.
K. Komori, J. Huang, N. Mizushima, S. Ko, T. Tatsuma, Y. Sakai   +5 more
openaire   +3 more sources

The activation and hydrogen storage characteristics of the cup-stacked carbon nanotubes

Diamond and Related Materials, 2019
Abstract In this study, the cup-stacked carbon nanotubes (CSCNTs) are chemically modified and used for the hydrogen storage for the first time. The SEM and TEM analyses indicate that because they are formed by the stacking of the truncated conical graphene layers the inner- and outer-edges of which are completely exposed, during KOH activation the ...
Yang Li, Huanpeng Liu, Chenyu Yang, Miao Zhu, Taiping Chen   +4 more
openaire   +2 more sources

Oxygenated Cup-Stacked Carbon Nanofibers/TiO2 Composite Films with Enhanced Photocatalytic Currents

Bulletin of the Chemical Society of Japan, 2016
Abstract Oxygenated cup-stacked carbon nanofibers (ox-CSCNFs), the surface of which provides highly ordered graphene edges and oxygen-containing functional groups, were introduced to a nanoporous TiO2 photoelectrode for enhanced photocatalytic currents. The ox-CSCNFs are characterized by good electric conductivity and high dispersibility
Kikuo Komori, Kentaro Yamura, Atsushi Kogo, Yusuke Takahashi, Tetsu Tatsuma, Akiyoshi Sakoda, Yasuyuki Sakai   +6 more
openaire   +2 more sources

Research on hydrogen adsorption characteristics of Pt decorated cup-stacked carbon nanotubes

Diamond and Related Materials, 2022
Yongxin Wang, Yinquan Sui, Mengying Sun, Jinglu Yan, Zhitong Xu, Huanpeng Liu   +5 more
openaire   +2 more sources

Electrochemical Determination of Hydroquinone Using a Tyrosinase-Based Cup-Stacked Carbon Nanotube (CSCNT)/Carbon Fiber Felt Composite Electrode

Analytical Letters, 2021
This work shows that the cup-stacked carbon nanotube/carbon fiber felt composite electrode (CSCNT/felt) is a promising electronic conductive matrix to develop biosensors.
W. Gomes, T. G. Beatto, Lara Cristina Marcatto, E. Y. Matsubara, R. K. Mendes, J. M. Rosolen   +5 more
semanticscholar   +1 more source

Graphene unrolled from ‘cup-stacked’ carbon nanotubes

Carbon, 2012
Abstract High quality graphene with a large area and smooth edges has been obtained by unrolling the so-called ‘cup-stacked’ carbon nanotubes (CSCNTs) by the solution-phase oxidation and reduction. Atomic force microscopy and transmission electron microscopy observations reveal that the obtained graphene layers can even have a size of 20 μm in width ...
Qingfeng Liu, Tsuyohiko Fujigaya, Naotoshi Nakashima   +2 more
openaire   +1 more source

Semiconducting properties of cup-stacked carbon nanotubes

Carbon, 2009
The current–voltage characteristics of individual cup-stacked carbon nanotubes (CSCNTs) were investigated in situ inside the transmission electron microscope. Different from other quasi-1D carbon structures such as multi-walled carbon nanotubes, carbon nanofibers or graphitic fibers that normally behave as a metallic conductor of electrons, individual ...
Liu, Qingfeng, Ren, Wencai, Chen, Zhi Gang, Yin, Lichang, Li, Feng, Cong, Hongtao, Cheng, Hui Ming   +6 more
openaire   +2 more sources