Carbon fibers with infiltrated TiO2 nanocrystalline layers: photocatalytic performance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0200776" target="_blank" >RIV/00216305:26620/26:0200776 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2026/nr/d5nr04109k" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2026/nr/d5nr04109k</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d5nr04109k" target="_blank" >10.1039/d5nr04109k</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Carbon fibers with infiltrated TiO2 nanocrystalline layers: photocatalytic performance

Popis výsledku v původním jazyce

This study examines the synergy of carbon fibers (CFs) and an infiltrated TiO2 nanocrystalline layer for photocatalytic degradation of methylene blue (MB). The CFs@TiO2 nanocomposite was developed using Vapour Phase Infiltration (VPI) of TiO2 into polyacrylonitrile fibers with 5-160 infiltration cycles and subsequently carbonized at 900 degrees C. This integrated production method enables precise integration of TiO2 and consistent coating over the fiber surface. SEM confirms the TiO2 layer thickening from 15.7 +/- 2.4 nm to 34.7 +/- 3.4 nm as the cycles increase from 40 to 160, while EDX and EDXRF indicate a similar rise in TiO2 content. XRD and Raman spectroscopy confirm the production of anatase TiO2 for VPI 40 c and higher, attributed to size-induced crystallization. UV-Vis DRS demonstrates that the optical bandgap varies with the cycle number in accordance with the development of the TiO2 layer. The outcomes of photocatalytic experiments under UV illumination indicate that the maximum degradation rate is achieved with the thickest coating. The CFs@TiO2 demonstrate exceptional cycle stability. This study emphasizes the potential of VPI-derived CFs@TiO2 as durable and effective photocatalysts.

Název v anglickém jazyce

Carbon fibers with infiltrated TiO2 nanocrystalline layers: photocatalytic performance

Popis výsledku anglicky

This study examines the synergy of carbon fibers (CFs) and an infiltrated TiO2 nanocrystalline layer for photocatalytic degradation of methylene blue (MB). The CFs@TiO2 nanocomposite was developed using Vapour Phase Infiltration (VPI) of TiO2 into polyacrylonitrile fibers with 5-160 infiltration cycles and subsequently carbonized at 900 degrees C. This integrated production method enables precise integration of TiO2 and consistent coating over the fiber surface. SEM confirms the TiO2 layer thickening from 15.7 +/- 2.4 nm to 34.7 +/- 3.4 nm as the cycles increase from 40 to 160, while EDX and EDXRF indicate a similar rise in TiO2 content. XRD and Raman spectroscopy confirm the production of anatase TiO2 for VPI 40 c and higher, attributed to size-induced crystallization. UV-Vis DRS demonstrates that the optical bandgap varies with the cycle number in accordance with the development of the TiO2 layer. The outcomes of photocatalytic experiments under UV illumination indicate that the maximum degradation rate is achieved with the thickest coating. The CFs@TiO2 demonstrate exceptional cycle stability. This study emphasizes the potential of VPI-derived CFs@TiO2 as durable and effective photocatalysts.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

—

Návaznosti

—

Rok uplatnění

2026

Kód důvěrnosti údajů

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

Název periodika

Nanoscale

ISSN

2040-3364

e-ISSN

2040-3372

Svazek periodika

18

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

413-424

Kód UT WoS článku

001631385000001

EID výsledku v databázi Scopus

2-s2.0-105023885409