Comprehensive study on graphene hydrogels and aerogels synthesis and their ability of gold nanoparticles adsorption
PBN-AR
Instytucja
Wydział Fizyki Technicznej i Matematyki Stosowanej (Politechnika Gdańska)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (30pkt w roku publikacji)
ISSN
0927-7757
EISSN
Wydawca
DOI
URL
Rok publikacji
2017
Numer zeszytu
Strony od-do
65-73
Numer tomu
528
Identyfikator DOI
Liczba arkuszy
Słowa kluczowe
Adsorption
GOLD NANOPARTICLES
GRAPHENE AEROGEL
GRAPHENE HYDROGEL
GRAPHENE OXIDE
Streszczenia
Język
Treść
Graphene hydrogels were prepared by ascorbic acid-assisted gelation of graphene oxide (GO) aqueous suspensions both in acidic and basic conditions. Different mass ratio of ascorbic acid (AA) to GO was used (namely 20:1 and 10:1). In order to eliminate the influence of AA on the final structure of hydrogels, samples without AA were prepared by a hydrothermal gelation of GO in an autoclave. An in-depth structural characterization of the obtained materials was performed before and after supercritical drying by means of FTIR, XRD and SEM. Surface area of hydrogels was determined using the methylene blue adsorption method. BET surface area and pore volume analysis of aerogels was also performed. The effect of initial GO concentration and volume on the final graphene aerogels structure was determined. Electrochemical properties of samples were also evaluated. Finally, gold nanoparticles (Au NP) adsorption on graphene hydro- and aerogels was presented for the first time. Graphene hydrogels and aerogels are promising candidates for practical applications e.g. in the Au NP removal from wastewater.
Inne
System-identifier
141157
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