The Preparation of Fluorescent Fibers from FCNPs and Calcium Alginate

Stable fluorescent carbon nanoparticles (FCNPs) with excellent water-solubility were prepared firstly by one-step ultrasonic treatment from the blending of glucose and sodium hydroxide. Then, the fluorescence calcium alginate fibers were successfully prepared through wet spinning, using the mixture of FCNPs and sodium alginate solution as the spinning dope. The fluorescent property of FCNPs and fibers were investigated using fluorescence spectrophotometer. Single fiber strength tester was used to measure the strength of the fluorescence fibers. The results showed that both FCNPs and fibers emitted bright blue color under 350nm wavelength UV irradiation. The strength of the fibers was improved when the content of FCNPs in the fibers achieved certain value.

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Green Synthesis of Multifunctional Carbon Dots with Antibacterial Activities

Nanomaterials ◽

10.3390/nano11020369 ◽

2021 ◽

Vol 11 (2) ◽

pp. 369 ◽

Cited By ~ 1

Author(s):

Arumugam Saravanan ◽

Moorthy Maruthapandi ◽

Poushali Das ◽

John H. T. Luong ◽

Aharon Gedanken

Keyword(s):

Carbon Dots ◽

Fluorescence Spectra ◽

Antibacterial Effect ◽

Curcuma Longa ◽

Antibacterial Activities ◽

Blue Color ◽

Mean Size ◽

One Step ◽

Bactericidal Activities ◽

Bright Blue

Carbon dots (CDs) were obtained from medicinal turmeric leaves (Curcuma longa) by a facile one-step hydrothermal method and evaluated for their bactericidal activities against two gram-negative; Escherichia coli, Klebsiella pneumoniae, and two gram-positive counterparts; Staphylococcus aureus, S. epidermidis. The CDs exhibited spherical shapes with a mean size of 2.6 nm. The fluorescence spectra of CDs revealed intense fluorescence at λex/em = 362/429 nm with a bright blue color in an aqueous solution. The CDs showed strong photostability under various environmental conditions (pH, salt, and UV-radiation). The complete bactericidal potency of CDs was 0.25 mg/mL for E.coli and S. aureus after 8 h of exposure, while for K. pneumoniae, and S. epidermidis, the CDs at 0.5 mg/mL good antibacterial effect within 8 h and complete eradication after 24 h of exposure is observed. The release of reactive oxygen species played a crucial role in the death of the bacterial cell. The present study provides a strategy for the preparation of CDs from a medicinal plant and their potential antibacterial activities against four common contagious pathogens.

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One-step synthesis of fluorescent carbon nanoparticles by laser irradiation

Journal of Materials Chemistry ◽

10.1039/b812943f ◽

2009 ◽

Vol 19 (4) ◽

pp. 484-488 ◽

Cited By ~ 616

Author(s):

Sheng-Liang Hu ◽

Kai-Yang Niu ◽

Jing Sun ◽

Jing Yang ◽

Nai-Qin Zhao ◽

...

Keyword(s):

Laser Irradiation ◽

Carbon Nanoparticles ◽

One Step ◽

Fluorescent Carbon Nanoparticles ◽

Fluorescent Carbon

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One-step synthesis of nitrogen, boron co-doped fluorescent carbon nanoparticles for glucose detection

Luminescence ◽

10.1002/bio.3287 ◽

2017 ◽

Vol 32 (6) ◽

pp. 1031-1038 ◽

Cited By ~ 6

Author(s):

Meijuan Liang ◽

Yi Ren ◽

Haijuan Zhang ◽

Yunxia Ma ◽

Xiaoying Niu ◽

...

Keyword(s):

Carbon Nanoparticles ◽

Glucose Detection ◽

One Step ◽

Fluorescent Carbon Nanoparticles ◽

Co Doped ◽

Fluorescent Carbon

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One-step synthesis of fluorescent carbon nanoparticles for degradation of naphthol green under visible light

Journal of Luminescence ◽

10.1016/j.jlumin.2014.07.007 ◽

2014 ◽

Vol 156 ◽

pp. 36-40 ◽

Cited By ~ 7

Author(s):

Hongren Li ◽

Feng Li ◽

Guiping Wang ◽

Hong Sun

Keyword(s):

Visible Light ◽

Carbon Nanoparticles ◽

One Step ◽

Fluorescent Carbon Nanoparticles ◽

Fluorescent Carbon

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Preparation and Properties of Nano-Silica/calcium Alginate Blend Fibers

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.332-334.321 ◽

2011 ◽

Vol 332-334 ◽

pp. 321-326

Author(s):

Feng Jun Wang ◽

Quan Ji ◽

Jian Jun Zhang ◽

Li Wen Tan ◽

Feng Yu Quan ◽

...

Keyword(s):

Calcium Alginate ◽

Nano Particles ◽

Sio2 Content ◽

Wet Spinning ◽

Structure And Properties ◽

Nano Silica ◽

The Mean ◽

Alginate Fibers ◽

Alginate Fiber ◽

Spinning Condition

Calcium alginate fibers and nano-silica/calcium alginate blend fibers were prepared by the mean of wet spinning at the same spinning condition. The effect of nano-particles SiO2 on the structure and properties of alginate fibers were studied via many tests. The results showed that the tenacity of blend fibers increased with the growth of the content of SiO2 ranging from 1% to 5%, however, the tenacity of fibers became worse when the content of SiO2 was more than 5%. The effect of SiO2 content on hardness and tribological properties of the calcium alginate fiber was studied. The morphologies of the fibers surfaces were examined with a Scanning Electron Microscope (SEM). The result showed that the surface of blend fibers was still smooth when the consent of SiO2 not up to 7%, the best surface was obtained when SiO2 content was 5%. The incorporation of SiO2 also affected the absorption property of alginate fiber and made it decrease with the increase of SiO2 content. The structures of calcium alginate fibers and nano-silica/calcium alginate blend fibers were studied by infrared spectrum.

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