New evidence for the photocatalytic efficiency of natural raw vermiculites to produce hydrogen from aqueous methanol solution

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F25%3A00638512" target="_blank" >RIV/68145535:_____/25:00638512 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.heliyon.2025.e42366" target="_blank" >https://doi.org/10.1016/j.heliyon.2025.e42366</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.heliyon.2025.e42366" target="_blank" >10.1016/j.heliyon.2025.e42366</a>

Result language

angličtina

Original language name

New evidence for the photocatalytic efficiency of natural raw vermiculites to produce hydrogen from aqueous methanol solution

Original language description

The potential of vermiculites as environmentally friendly photocatalysts for hydrogen production and pollutant degradation was demonstrated by a photocatalytic test in an 50 % aqueous methanol solution. After 4 h of irradiation with the commercial TiO2 Evonik P25 catalyst, the hydrogen yield was of 656.9 ± 4.2 μmol/gcat. For vermiculites Vm1, Vm3, and Vm4, hydrogen yields were comparable, but were lower in the presence of vermiculite-chlorite intermediate Vm2 (H₂ = 385.1 ± 6.6 μmol/gcat). After the extended 24-h irradiation, hydrogen yield was promoted by the negative tetrahedral charge, while the positive octahedral charge inhibited the photocatalytic decomposition of the aqueous methanol solution into hydrogen in favor of the formation of CO and CH4 byproducts. The decrease in methanol yield was effectively assessed by the shift of the C–O and C–H bands in the Raman spectrum, corresponding to thenphotocatalytic production of H2.n

Czech name

—

Czech description

—

Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

—

OECD FORD branch

10406 - Analytical chemistry

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Heliyon

ISSN

2405-8440

e-ISSN

2405-8440

Volume of the periodical

11

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

e42366

UT code for WoS article

—

EID of the result in the Scopus database

2-s2.0-85217656951