Cyclic photocatalytic regeneration of sorbent, based on carbon nitride (G-C3N4) incorporated in silica net structure

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F19%3A10242841" target="_blank" >RIV/61989100:27640/19:10242841 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27740/19:10242841

Result on the web

<a href="https://www.nanocon.eu/cz/program-konference/295-posterova-sekce-b/" target="_blank" >https://www.nanocon.eu/cz/program-konference/295-posterova-sekce-b/</a>

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Cyclic photocatalytic regeneration of sorbent, based on carbon nitride (G-C3N4) incorporated in silica net structure

Original language description

In this work, we present an advanced preparation method, of photoactive layered graphitic carbon nitride (g-C3N4) incorporated into the silica structure containing zinc ions. This new nanocomposite has enhanced sorption properties and photocatalytic activity due to presence of g-C3N4. Samples with 20 wt.% and 10 wt.% of g-C3N4 were prepared and successfully tested. Specific surface area of nanocomposites was increased from 36 m2/g of pure carbon nitride g-C3N4 to 366 and 320 m2/g of functional composites respectively. The material was prepared by vigorous stirring of aqueous solution of zinc acetate and g-C3N4 within ultrasonic field of power density of 1 kW/L. During the sonication, sodium water glass was added at once to synthesize ZnO-m.SiO2 nanoparticles by precipitation reaction. The dispersion was then rapidly frozen and subjected to vacuum freeze-drying process to obtain powder material, which is easier to handle and more suitable for tests. Prepared nanocomposites were subjected to tests of sorption and photocatalytic degradation of methylene blue dye. Furthermore, samples did undergo four successful cycles of sorption of methylene blue with starting concentration of 1 mg/L followed by photocatalytic regeneration. The sorption capacity of sample with 20 wt.% of g-C3N4 was 0.21 mg/g and after the fourth cycle of regeneration it was restored to 75 % of its original value. The sorption capacity of sample with 10 wt.% of g-C3N4 was 0.18 mg/g and after fourth cycle of regeneration it was restored to 90 % of its original value.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

21000 - Nano-technology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2019

Confidentiality

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

Article name in the collection

NANOCON 2018 : 10th Anniversary International Conference on Nanomaterials - research &amp;amp; application : conference proceedings : peer reviewed : October 17th-19th 2018, Hotel Voroněž I, Brno, Czech Republic, EU

ISBN

978-80-87294-89-5

ISSN

—

e-ISSN

—

Number of pages

5

Pages from-to

125-130

Publisher name

Tanger

Place of publication

Ostrava

Event location

Brno

Event date

Oct 17, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—