Sediments inhibit adsorption of 17β-estradiol and 17α-ethinylestradiol to carbon nanotubes and graphene oxide

2017 ◽  
Vol 4 (9) ◽  
pp. 1900-1910 ◽  
Author(s):  
Weiling Sun ◽  
Menglin Li ◽  
Wei Zhang ◽  
Jingmiao Wei ◽  
Ben Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Particle Size ◽  
Graphene Oxide ◽  
Inhibition Effect ◽  
17Β Estradiol

The decreasing particle size and OM removal of sediments enhanced the inhibition effect of sediments on E2/EE2 adsorption to CNMs.

Comparative cytotoxicity of kaolinite, halloysite, multiwalled carbon nanotubes and graphene oxide

2021 ◽  
Vol 205 ◽  
pp. 106041
Author(s):  
Elvira Rozhina ◽  
Svetlana Batasheva ◽  
Regina Miftakhova ◽  
Xuehai Yan ◽  
Anna Vikulina ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon

scholarly journals Thermogravimetric Analysis (TGA) of Graphene Materials: Effect of Particle Size of Graphene, Graphene Oxide and Graphite on Thermal Parameters

2021 ◽  
Vol 7 (2) ◽  
pp. 41
Author(s):  
Farzaneh Farivar ◽  
Pei Lay Yap ◽  
Ramesh Udayashankar Karunagaran ◽  
Dusan Losic
Keyword(s):  
Particle Size ◽  
Quality Control ◽  
Graphene Oxide ◽  
Thermogravimetric Analysis ◽  
Low Cost ◽  
Thermal Parameters ◽  
Carbon Decomposition ◽  
Size Number ◽  
Carbon Combustion ◽  
Oxygen Groups

Thermogravimetric analysis (TGA) has been recognized as a simple and reliable analytical tool for characterization of industrially manufactured graphene powders. Thermal properties of graphene are dependent on many parameters such as particle size, number of layers, defects and presence of oxygen groups to improve the reliability of this method for quality control of graphene materials, therefore it is important to explore the influence of these parameters. This paper presents a comprehensive TGA study to determine the influence of different particle size of the three key materials including graphene, graphene oxide and graphite on their thermal parameters such as carbon decomposition range and its temperature of maximum mass change rate (Tmax). Results showed that Tmax values derived from the TGA-DTG carbon combustion peaks of these materials increasing from GO (558–616 °C), to graphene (659–713 °C) and followed by graphite (841–949 °C) The Tmax values derived from their respective DTG carbon combustion peaks increased as their particle size increased (28.6–120.2 µm for GO, 7.6–73.4 for graphene and 24.2–148.8 µm for graphite). The linear relationship between the Tmax values and the particle size of graphene and their key impurities (graphite and GO) confirmed in this study endows the use of TGA technique with more confidence to evaluate bulk graphene-related materials (GRMs) at low-cost, rapid, reliable and simple diagnostic tool for improved quality control of industrially manufactured GRMs including detection of “fake” graphene.

scholarly journals Electronic Textiles Fabricated with Graphene Oxide-Coated Commercial Textiles

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 489
Author(s):  
Hyun-Seok Jang ◽  
Min-Soo Moon ◽  
Byung-Hoon Kim
Keyword(s):  
Heat Treatment ◽  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Electronic Devices ◽  
Electronic Textiles ◽  
Axial Tension ◽  
Coated Cotton

Demand for wearable and portable electronic devices has increased, raising interest in electronic textiles (e-textiles). E-textiles have been produced using various materials including carbon nanotubes, graphene, and graphene oxide. Among the materials in this minireview, we introduce e-textiles fabricated with graphene oxide (GO) coating, using commercial textiles. GO-coated cotton, nylon, polyester, and silk are reported. The GO-coated commercial textiles were reduced chemically and thermally. The maximum e-textile conductivity of about 10 S/cm was achieved in GO-coated silk. We also introduce an e-textile made of uncoated silk. The silk-based e-textiles were obtained using a simple heat treatment with axial tension. The conductivity of the e-textiles was over 100 S/cm.

Flexible Carbon-Based Nanogenerators

2015 ◽  
Vol 1782 ◽  
pp. 1-8
Author(s):  
Ning-Qin Deng ◽  
He Tian ◽  
Qing-Tang Xue ◽  
Zhe Wang ◽  
Hai-Ming Zhao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Energy Harvesting ◽  
Zno Nanoparticles ◽  
Output Voltage ◽  
Multiwall Carbon Nanotubes ◽  
The Other ◽  
Peak Voltage ◽  
Energy Depletion ◽  
Multiwall Carbon

ABSTRACTNanogenerators (NGs) have great potential to solve the problems of energy depletion and environmental pollution. Here, two types of flexible nanogenerators (FNGs) based on graphene oxide (GO) and multiwall carbon nanotubes (MW-CNTs) are presented. The peak output voltage and current of GO based FNG reached up to 2 V and 30 nA, respectively, under 15 N force at 1 Hz. Moreover, the output voltage could be improved to 34.4 V when the frequency was increased to 10 Hz. It was also found the output voltage increased from 0.1 V to 2.0 V using a released GO structure. The other FNG was made by MW-CNTs mixed with ZnO nanoparticles (NPs). Its output voltage and power reached up to 7.5 V and 18.75 mW, respectively, which is much larger than that of bare ZnO based FNG. Furthermore, a peak voltage of 30 V could be gained by stamping one’s foot on the FNG. Finally, a modified NG was fabricated using four springs and two flexible layers. As a result, the voltage and power reached up to 9 V and 27mW, respectively. These works may bring out broad applications in energy harvesting.

scholarly journals Impact of sediment particle size on biotransformation of 17β-estradiol and 17β-trenbolone

2016 ◽  
Vol 572 ◽  
pp. 207-215 ◽  
Author(s):  
Yun Zhang ◽  
Jodi L. Sangster ◽  
Lukasz Gauza ◽  
Shannon L. Bartelt-Hunt
Keyword(s):  
Particle Size ◽  
Sediment Particle ◽  
Sediment Particle Size ◽  
17Β Estradiol

Multi-Walled Carbon Nanotubes/Graphene Oxide Composites for Humidity Sensing

2013 ◽  
Vol 13 (12) ◽  
pp. 4749-4756 ◽  
Author(s):  
Xiaoyu Li ◽  
Xiangdong Chen ◽  
Yao Yao ◽  
Ning Li ◽  
Xinpeng Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Humidity Sensing ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Oxide Composites
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