Natural versus organophilized smectites as drug adsorbents: experiment and molecular modeling

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F25%3A10258408" target="_blank" >RIV/61989100:27360/25:10258408 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27640/25:10258408

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2025/ra/d5ra04769b" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2025/ra/d5ra04769b</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/D5RA04769B" target="_blank" >10.1039/D5RA04769B</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Natural versus organophilized smectites as drug adsorbents: experiment and molecular modeling

Popis výsledku v původním jazyce

To adsorb pollutants from water, smectites are commonly modified with quaternary ammonium compounds. However, these are also environmentally hazardous. This study aims to highlight that original smectites can compete with modified ones and that modification is not necessary. Original smectites – montmorillonite (MMT), beidellite (BEI), nontronite (NON) – and the same smectites modified with tetradecyltrimethylammonium (TTA+), denoted as MMT-M, BEI-M, NON-M, were studied as adsorbents of drugs ampicillin (AMP) and lamotrigine (LAM). Adsorbents before and after adsorption were studied using Fourier-transform infrared spectroscopy, elemental analysis, X-ray powder diffraction, thermogravimetry, and molecular modeling. Adsorption efficiency of original smectites reaches or exceeds (for LAM on BEI and NON) 50 mg per 1 g of adsorbent. Adsorption is not monolayer and the order BEI &gt; MMT &gt; NON for both AMP and LAM was found. While AMP is preferentially adsorbed through interaction with Na+, LAM is preferentially adsorbed through interactions with other LAMs. For modified smectites, the adsorption efficiency ranges from units to lower tens of mg per 1 g of adsorbent in the order MMT-M &gt; NON-M &gt; BEI-M and NON-M &gt; MMT-M &gt; BEI-M for AMP and LAM, respectively. The adsorption can be considered monolayer, and it is not controlled only by the strength of drug – TTA+ interaction. It can be concluded that (1) the modification did not enhance the adsorption efficiency of original smectites, (2) the original smectites showed higher adsorption efficiency compared to the modified ones, and (3) the original smectites are a suitable environmentally friendly alternative to the commonly used modified smectites.

Název v anglickém jazyce

Natural versus organophilized smectites as drug adsorbents: experiment and molecular modeling

Popis výsledku anglicky

To adsorb pollutants from water, smectites are commonly modified with quaternary ammonium compounds. However, these are also environmentally hazardous. This study aims to highlight that original smectites can compete with modified ones and that modification is not necessary. Original smectites – montmorillonite (MMT), beidellite (BEI), nontronite (NON) – and the same smectites modified with tetradecyltrimethylammonium (TTA+), denoted as MMT-M, BEI-M, NON-M, were studied as adsorbents of drugs ampicillin (AMP) and lamotrigine (LAM). Adsorbents before and after adsorption were studied using Fourier-transform infrared spectroscopy, elemental analysis, X-ray powder diffraction, thermogravimetry, and molecular modeling. Adsorption efficiency of original smectites reaches or exceeds (for LAM on BEI and NON) 50 mg per 1 g of adsorbent. Adsorption is not monolayer and the order BEI &gt; MMT &gt; NON for both AMP and LAM was found. While AMP is preferentially adsorbed through interaction with Na+, LAM is preferentially adsorbed through interactions with other LAMs. For modified smectites, the adsorption efficiency ranges from units to lower tens of mg per 1 g of adsorbent in the order MMT-M &gt; NON-M &gt; BEI-M and NON-M &gt; MMT-M &gt; BEI-M for AMP and LAM, respectively. The adsorption can be considered monolayer, and it is not controlled only by the strength of drug – TTA+ interaction. It can be concluded that (1) the modification did not enhance the adsorption efficiency of original smectites, (2) the original smectites showed higher adsorption efficiency compared to the modified ones, and (3) the original smectites are a suitable environmentally friendly alternative to the commonly used modified smectites.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/EH22_008%2F0004631" target="_blank" >EH22_008/0004631: Materiály a technologie pro udržitelný rozvoj</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

RSC Advances

ISSN

2046-2069

e-ISSN

2046-2069

Svazek periodika

15

Číslo periodika v rámci svazku

43

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

19

Strana od-do

36065-36083

Kód UT WoS článku

001584605900001

EID výsledku v databázi Scopus

2-s2.0-105017424939