Quantitative determination of acidic groups in functionalized graphene by direct titration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F16%3A00459061" target="_blank" >RIV/61388980:_____/16:00459061 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389013:_____/16:00459061 RIV/44555601:13520/16:43887669 RIV/62690094:18470/16:50004726

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.reactfunctpolym.2016.03.021" target="_blank" >http://dx.doi.org/10.1016/j.reactfunctpolym.2016.03.021</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.reactfunctpolym.2016.03.021" target="_blank" >10.1016/j.reactfunctpolym.2016.03.021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quantitative determination of acidic groups in functionalized graphene by direct titration

Popis výsledku v původním jazyce

Direct titration with NaOH was used to quantify the acidic functional group content in graphene oxide (GO). Three different methods were used to evaluate the experimental data: the first derivation of the titration curve, Gran linearization and an empirical approach suggested by Ritchie and Perdue for the evaluation of the titration data for humic substances. Two types of acidic functional groups were identified and classified, more or less arbitrarily, as being either carboxylic or phenolic. Typically, the carboxylic acid group contents ranged from ca. 0.80 to 1.70 mmol/g, except for the carboxylated GO prepared by the reaction with chloroacetic acid, which contained significantly more carboxylic acid groups. The titration results are consistent with those obtained by instrumental methods such as X-ray diffraction (XRD), infrared spectroscopy (IR), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). For modelling purposes (proton binding and metal binding), a bimodal continuous distribution model was proposed, and its parameters were estimated from the titration data.

Název v anglickém jazyce

Quantitative determination of acidic groups in functionalized graphene by direct titration

Popis výsledku anglicky

Direct titration with NaOH was used to quantify the acidic functional group content in graphene oxide (GO). Three different methods were used to evaluate the experimental data: the first derivation of the titration curve, Gran linearization and an empirical approach suggested by Ritchie and Perdue for the evaluation of the titration data for humic substances. Two types of acidic functional groups were identified and classified, more or less arbitrarily, as being either carboxylic or phenolic. Typically, the carboxylic acid group contents ranged from ca. 0.80 to 1.70 mmol/g, except for the carboxylated GO prepared by the reaction with chloroacetic acid, which contained significantly more carboxylic acid groups. The titration results are consistent with those obtained by instrumental methods such as X-ray diffraction (XRD), infrared spectroscopy (IR), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). For modelling purposes (proton binding and metal binding), a bimodal continuous distribution model was proposed, and its parameters were estimated from the titration data.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CA - Anorganická chemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA14-05146S" target="_blank" >GA14-05146S: Studium interakcí grafen – iontová kapalina a jejich využití pro prípravu polymerních kompozitů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Reactive and Functional Polymers

ISSN

1381-5148

e-ISSN

—

Svazek periodika

103

Číslo periodika v rámci svazku

JUN

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

44-53

Kód UT WoS článku

000377737800006

EID výsledku v databázi Scopus

2-s2.0-84963614849