A comparative study of two kinds of T800 carbon fibers produced by different spinning methods for the production of filament-wound pressure vessels
Publication date: 15 December 2019Source: New Carbon Materials, Volume 34, Issue 6Author(s): Shi-jie Zhang, Ru-min Wang, Ying-qiang Liao (Source: New Carbon Materials)
Source: New Carbon Materials - February 29, 2020 Category: Chemistry Source Type: research
The selective aerobic oxidation of 5-hydroxymethylfurfural to produce 2,5-diformylfuran using Nitrogen-doped porous carbons as catalysts
Publication date: 15 December 2019Source: New Carbon Materials, Volume 34, Issue 6Author(s): Na Teng, Jin-long Li, Bo-qiong Lu, Yu-qi Wang, Shi-yu Jia, Ying-xiong Wang, Xiang-lin Hou (Source: New Carbon Materials)
Source: New Carbon Materials - February 29, 2020 Category: Chemistry Source Type: research
Reduced graphene oxide hydrogels prepared in the presence of phenol for high-performance electrochemical capacitors
Publication date: October 2019Source: New Carbon Materials, Volume 34, Issue 5Author(s): Xiang-li Gao, Cui-xian Liu, Gao-yi Han, Hua Song, Yao-ming Xiao, Hai-han ZhouAbstractReduced graphene oxide (GO) hydrogels were synthesized by the hydrothermal treatment of GO in the presence of phenol to obtain rGOHPhs, where phenol acted as both a reducing agent and a structure regulator for the hydrogels. The influence of the mass ratio of GO to phenol and the hydrothermal temperature on the capacitive behavior of the rGOHPhs were investigated. Results indicate that the rGOHPhs have a more developed three-dimensional pore network th...
Source: New Carbon Materials - November 21, 2019 Category: Chemistry Source Type: research
A flexible carbon nanotube-pyrolytic carbon sandwich paper with a stable structure and high heat-dissipation capacity
Publication date: October 2019Source: New Carbon Materials, Volume 34, Issue 5Author(s): Xue-song Liu, Qian-gang Fu, Hui Wang, Ya-long Wei, Qiang SongAbstractA thin layer of pyrolytic carbon (PyC) was deposited on a carbon nanotube paper (CNP) by chemical vapor deposition from methane to improve its structural stability while maintaining its excellent mechanical and thermal conductivity performance. The resulting material consisted of layers of PyC carbon on the outer surfaces, a layer of bare CNTs in the center, and layers of CNTs infiltrated with PyC between the outer and inner layers. The resulting sandwich material cou...
Source: New Carbon Materials - November 21, 2019 Category: Chemistry Source Type: research
Nanohybrids of silver nanoparticles grown in-situ on a graphene oxide silver ion salt: simple synthesis and their enhanced antibacterial activity
Publication date: October 2019Source: New Carbon Materials, Volume 34, Issue 5Author(s): Kai-rong Xiong, Ye-ru Liang, Yi Ou-yang, Ding-cai Wu, Ruo-wen FuAbstractAdvanced antimicrobial agents that treat infectious diseases are greatly needed. Various silver-based nanomaterials have been developed and are considered potential candidates for many commercial products, but they lack durability and adequate antibacterial activity. A new class of nanohybrids of silver nanoparticles (AgNPs) grown in-situ on graphene oxide (GO) using a silver ion salt was synthesized by a simple ultrasonic mixing method. The structure and compositi...
Source: New Carbon Materials - November 21, 2019 Category: Chemistry Source Type: research
Effects of the high-temperature treatment of C/C composites on their tribological properties
Publication date: October 2019Source: New Carbon Materials, Volume 34, Issue 5Author(s): Xi Ou-yang, Zhuan Li, Peng Xiao, Guan-yi Chen, jin-wei Li, Peng-fei LiuAbstractC/C composites prepared by chemical vapor infiltration (CVI) were subjected to high temperature treatment (HTT) at 2300 °C under an Ar atmosphere. C/C-SiC composites were prepared by liquid silicon infiltration (LSI) of the C/C composites before HTT. The C/C composites before (A) and after (B) HTT were mated with the C/C-SiC to form friction pairs to investigate their tribological properties. Results indicated that the average coefficient of friction (COF) ...
Source: New Carbon Materials - November 21, 2019 Category: Chemistry Source Type: research
Effects of the oxygen content of reduced graphene oxide on the mechanical and electromagnetic interference shielding properties of carbon fiber/reduced graphene oxide-epoxy composites
Publication date: October 2019Source: New Carbon Materials, Volume 34, Issue 5Author(s): Ye Li, Shi-tai Liu, Jian-ming Sun, Shuang Li, Jun-lin Chen, Yan ZhaoAbstractUnidirectional carbon fiber/reduced graphene oxide nanosheet-epoxy laminate composites (CF/RGONs-epoxy) were produced by impregnating the CFs with epoxy acetone solutions containing RGONs, followed by solvent evaporation and curing at 180 °C under 0.6 MPa. The RGONs were prepared by the Hummers method and reduced to different oxygen contents using hydrazine monohydrate by adjusting the reduction temperature. The effect of the content of RGONs on the mechanical...
Source: New Carbon Materials - November 21, 2019 Category: Chemistry Source Type: research
Efficient removal of organic dyes using a three-dimensional graphene aerogel with excellent recycling stability
Publication date: August 2019Source: New Carbon Materials, Volume 34, Issue 4Author(s): Yue-ling Ding, Zhen Tian, Hui-jun Li, Xiao-min WangAbstractThe development of a renewable absorbent with a high adsorption efficiency is of great importance for the purification of dye wastewater. A nitrogen-doped graphene aerogel (N-GA) was prepared by a one-step hydrothermal and freeze-drying method using polyvinyl alcohol (PVA) as a cross-linking agent. Results indicated that the nitrogen doping provided more adsorption sites for the dyes. The PVA-N-GA showed excellent adsorption efficiencies for methylene blue (MB) (98.39% at pH=8) ...
Source: New Carbon Materials - October 5, 2019 Category: Chemistry Source Type: research
Modification of a rice husk-based activated carbon by thermal treatment and its effect on its electrochemical performance as a supercapacitor electrode
Publication date: August 2019Source: New Carbon Materials, Volume 34, Issue 4Author(s): Cheng-yuan Xiao, Wen-li Zhang, Hai-bo Lin, Yong-xia Tian, Xin-xin Li, Yi-ye Tian, Hai-yan LuAbstractA hierarchically porous rice husk-based activated carbon, which had been prepared by a combined method (carbonization, NaOH-leaching and KOH activation), has a high specific capacitance and power density as a supercapacitor electrode in aqueous or organic electrolytes. It was subjected to a simple thermal treatment at 800 °C for 1 h to modify its microstructure and electrochemical performance. Results indicate that its original hierarchi...
Source: New Carbon Materials - October 5, 2019 Category: Chemistry Source Type: research
Effect of the CO2 activation parameters on the pore structure of silicon carbide-derived carbons
Publication date: August 2019Source: New Carbon Materials, Volume 34, Issue 4Author(s): Li-qun Duan, Qing-song Ma, Lin-jian Ma, Lu Dong, Bo Wang, Xiao-qing Dai, Bo ZhangAbstractA silicon carbide derived carbon (SiC-DC) with a high specific surface area (SSA) fabricated by chlorination of a silicon carbide derived from polysiloxane was activated by CO2. The effect of activation temperature and time on the microstructure of the activated samples was investigated by N2 sorption, XRD, SEM and TEM. Results showed that CO2 activation effectively changed the pore structure of the SiC-DC and had little impact on carbon crystallini...
Source: New Carbon Materials - October 5, 2019 Category: Chemistry Source Type: research
Preparation and antibacterial activities of copper nanoparticles encapsulated by carbon
Publication date: August 2019Source: New Carbon Materials, Volume 34, Issue 4Author(s): Hai-feng Chen, Juan-juan Wu, Ming-yue Wu, Hui JiaAbstractCopper nanoparticles encapsulated by carbon (Cu-NPs@C) were synthesized by a two-step method by mixing cupric chloride and glucose in a solution, followed by carbonization. The microstructures and antibacterial activities of the Cu-NPs@C samples were characterized by TEM, XRD, XPS, nitrogen adsorption and antibacterial activity tests. Results indicated that the as-synthesized Cu-NPs had a FCC crystal structure and a spherical morphology of diameter 4-46 nm and were well dispersed ...
Source: New Carbon Materials - October 5, 2019 Category: Chemistry Source Type: research
Preparation of nitrogen-doped carbon dots with a high fluorescence quantum yield for the highly sensitive detection of Cu2+ ions, drawing anti-counterfeit patterns and imaging live cells
Publication date: August 2019Source: New Carbon Materials, Volume 34, Issue 4Author(s): Wen Liu, Rong Zhang, Yu Kang, Xiao-ying Zhang, Hao-jiang Wang, Li-hong Li, Hai-peng Diao, Wen-long WeiAbstractWater-soluble luminescent nitrogen-doped CDs (N-CDs) having a high QY of 29.83% were prepared by a one-step microwave-assisted pyrolysis method using ammonium citrate and triethylenetetramine as the precursors. The microstructure, optical properties and biocompatibility of the N-CDs were investigated. Results indicate that they exhibit a strong fluorescence, favorable biocompatibility and excellent optical stability. Their photo...
Source: New Carbon Materials - October 5, 2019 Category: Chemistry Source Type: research
Synthesis of porous carbons from coal tar pitch for high-performance supercapacitors
Publication date: April 2019Source: New Carbon Materials, Volume 34, Issue 2Author(s): Feng Wei, Han-fang Zhang, Xiao-jun He, Hao Ma, Shi-an Dong, Xiao-yu XieAbstractPorous carbons (PCs) for supercapacitors were synthesized by a combined Mg(OH)2 templating and in-situ KOH activation method using coal tar pitch as the carbon precursor, and were characterized by TEM, Raman spectroscopy, XPS and N2 adsorption. Their electrochemical properties were investigated by galvanostatic charge-discharge, electrochemical impedance spectroscopy and cyclic voltammetry. Results show that the specific surface area of the PCs increases with ...
Source: New Carbon Materials - July 12, 2019 Category: Chemistry Source Type: research
Recycled silicon powder coated on carbon paper used as the anode of lithium ion batteries
Publication date: April 2019Source: New Carbon Materials, Volume 34, Issue 2Author(s): Shen Chin-Wei, Ko Tse-Hao, Chiu Kuo-Feng, Leu Hoang-Jyh, Liao Ting-Chia, Liu Ching-HanAbstractHigh-capacity electrode materials are critical for portable electronic equipment that requires a high-energy density from lithium ion batteries (LIBs). Many different materials and fabrication methods for such electrodes have been developed for this purpose. Carbon paper coated with recycled silicon powder (CP-RSP) was prepared by coating silicon and pitch powder on the carbon paper, followed by stabilization at 250 °C in air and carbonization ...
Source: New Carbon Materials - July 12, 2019 Category: Chemistry Source Type: research
Improved corrosion resistance of copper coated by graphene
Publication date: April 2019Source: New Carbon Materials, Volume 34, Issue 2Author(s): Hai-xia Zhang, Qiong Ma, Yong-zhen Wang, Bing-she Xu, Jun-jie GuoAbstractHigh quality graphene on a Cu foil was synthesized by atmospheric pressure chemical vapor deposition. The morphology and microstructure of specimens were characterized by optical microscopy, scanning electron microscopy, high-resolution transmission electron microscopy, Raman spectroscopy, ultraviolet-visible spectroscopy and X-ray photoelectron spectroscopy. The corrosion resistance of specimens was tested by potentiodynamic polarization and electrochemical impedan...
Source: New Carbon Materials - July 12, 2019 Category: Chemistry Source Type: research
