BSU bulletin. Chemistry. Physics
Bibliographic description:
, , , PRELIMINARY RESULTS ON SYNTHESIS OF ACTIVATED CARBON SUPPORTED WITH SILVER NANOPARTICLES IN SUPERCRITICAL WATER MEDIUM // BSU bulletin. Chemistry. Physics. - 2018. №1. . - С. 3-9.
Title:
PRELIMINARY RESULTS ON SYNTHESIS OF ACTIVATED CARBON SUPPORTED WITH SILVER NANOPARTICLES IN SUPERCRITICAL WATER MEDIUM
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Annotation:
Activated carbon supported with silver nanoparticles was synthesized in supercritical water condition at 673 K and 30.0 MPa in a batch reactor. The reaction time was 30 min with concentration of silver acetate solution at 0.02 M. Synthesized activated carbon-Ag particles were characterized by X-ray diffraction, Fourier transformation confirmed infrared spectroscopy and scanning electron microscopy. X-ray diffraction measurement indicated the presence of metallic silver. Fourier transformation infrared spectroscopy traces of primary activated carbon, activated carbon treated in supercritical water condition and synthesized activated carbon-Ag showed slight shift near 1629 cm-1 due to silver bonding to activated carbon via carbonyl and carboxyl groups. There was also observed chain-like structure of activated carbon-Ag with size of around 100 nm when s Scanned by electron microscopy.
Keywords:
activated carbon; silver nanoparticles; supercritical water condition; scanning electron microscopy; X-ray diffraction; infrared spectroscopy; Fourier transformation.
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Adschiri T., Hakuta Y., Arai K. Hydrothermal Synthesis of Metal Oxide Fine Particles at Supercritical Conditions // Ind. Eng. Chem. Res. 2000. V. 39 (12). P. 4901–4907.
Adschiri T., Kanazawa K., Arai K. Rapid and Continuous Hydrothermal Crystallization of Metal Oxide Particles in Supercritical Water // J. Am. Ceram. Soc. 1992. V. 75. P. 1019– 1022.
Lee H.-C., Byamba-Ochir N., Shim W.-G., Balathanigaimani M. S., Moon H. High- performance super capacitors based on activated anthracite with controlled porosity // J. Power Sources. 2015. V. 275. P. 668–674.
Zhao Y., Wang Z.-Q., Zhao X., Li W., Liu S.-X. Antibacterial action of silver-doped activated carbon prepared by vacuum impregnation // Appl. Surf. Sci. 2013. V. 266. P. 67–72.
Wu H., Feng Q., Yang H., Alam E., Gao B., Gu D. Modified biochar supported Ag/Fe nanoparticles used for removal of cephalexin in solution: Characterization, kinetics and mechanisms // Colloids and Surfaces A: Physicochem. Eng. Aspects. 2017. V. 517. P. 63–71.
Sawai O., Oshima Y. Mechanism of silver nano-particles formation on a-alumina using supercritical water // J. Mater. Sci. 2008. V. 43. P. 2293–2299.
Tang C., Hu D., Cao Q., Yan W., Xing B. Silver nanoparticles-loaded activated carbon fibers using chitosan as binding agent: Preparation, mechanism, and their antibacterial activity // Appl. Surf. Sci. 2017. V. 394. P. 457–465.
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