Silver modified TiO2 and melem/g-C3N4: preparation, characterization, and photodegradation activity against model dye acid orange 7

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F22%3A10251910" target="_blank" >RIV/61989100:27360/22:10251910 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27650/22:10251910 RIV/61989100:27640/22:10251910 RIV/61989100:27240/22:10251910

Výsledek na webu

<a href="https://atomdec.info/intsymp-2" target="_blank" >https://atomdec.info/intsymp-2</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Silver modified TiO2 and melem/g-C3N4: preparation, characterization, and photodegradation activity against model dye acid orange 7

Popis výsledku v původním jazyce

In this work, we paid our attention to presenting the results of the two interesting semicon-ductor materials: TiO2, and melem/g-C3N4, and tested their performances as photocatalysts forthe degradation of the model acid orange dye (AO7). A wet, easy chemical, and low-temperature approach for creating ca. 5 nm-sized Ag NPs spheres (Ag content: 0.5, 1.0, and 2.5wt.%) were developed. Various complementary techniques along with: X-ray powder diffraction(XRD), scanning (SEM) and transmission (TEM) electron microscopy, X-ray energy dispersivespectroscopy (EDS), photoluminescence (PL), and UV-Vis diffuse reflection (UV-Vis DRS)spectroscopy were used to thoroughly characterize the synthesized powder materials. All mate-rials were examined as potential photocatalysts using the AO7 photodegradation methodology.To compare the photodegradation tests, two separate lamps with wavelengths of 368 nm (UVlight) and 420 nm (VIS light) were used. The surface modification of both TiO2 and melem/g-C3N4 materials with 0.5 wt% Ag revealed the best photocatalytic performances under UV andVIS light. For samples: TiO2 and melem/g-C3N4 containing 0.5 wt% Ag, photodegradation ac-tivities using a UV lamp (3 h, 368 nm irradiation) exceeded 95 and 94%, respectively. After 3hours of irradiation, the materials showing the highest photoactivities were melem/g-C3N4 with0.5 and 1 wt. Ag, which displayed 98% activity under the irradiation with VIS light. Our re-search provides a unique, environmentally friendly, and cost-effective chemical method for pro-ducing photocatalysts suited for the degradation of organic pollutants in wastewater treatment.

Název v anglickém jazyce

Silver modified TiO2 and melem/g-C3N4: preparation, characterization, and photodegradation activity against model dye acid orange 7

Popis výsledku anglicky

In this work, we paid our attention to presenting the results of the two interesting semicon-ductor materials: TiO2, and melem/g-C3N4, and tested their performances as photocatalysts forthe degradation of the model acid orange dye (AO7). A wet, easy chemical, and low-temperature approach for creating ca. 5 nm-sized Ag NPs spheres (Ag content: 0.5, 1.0, and 2.5wt.%) were developed. Various complementary techniques along with: X-ray powder diffraction(XRD), scanning (SEM) and transmission (TEM) electron microscopy, X-ray energy dispersivespectroscopy (EDS), photoluminescence (PL), and UV-Vis diffuse reflection (UV-Vis DRS)spectroscopy were used to thoroughly characterize the synthesized powder materials. All mate-rials were examined as potential photocatalysts using the AO7 photodegradation methodology.To compare the photodegradation tests, two separate lamps with wavelengths of 368 nm (UVlight) and 420 nm (VIS light) were used. The surface modification of both TiO2 and melem/g-C3N4 materials with 0.5 wt% Ag revealed the best photocatalytic performances under UV andVIS light. For samples: TiO2 and melem/g-C3N4 containing 0.5 wt% Ag, photodegradation ac-tivities using a UV lamp (3 h, 368 nm irradiation) exceeded 95 and 94%, respectively. After 3hours of irradiation, the materials showing the highest photoactivities were melem/g-C3N4 with0.5 and 1 wt. Ag, which displayed 98% activity under the irradiation with VIS light. Our re-search provides a unique, environmentally friendly, and cost-effective chemical method for pro-ducing photocatalysts suited for the degradation of organic pollutants in wastewater treatment.

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2022

Kód důvěrnosti údajů

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