Nanostructured manganese oxides as highly active catalysts for enhanced hydrolysis of bis(4-nitrophenyl)phosphate and catalytic decomposition of methanol

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F21%3A00541518" target="_blank" >RIV/61388980:_____/21:00541518 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1039/D0CY02112A" target="_blank" >https://doi.org/10.1039/D0CY02112A</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d0cy02112a" target="_blank" >10.1039/d0cy02112a</a>

Result language

angličtina

Original language name

Nanostructured manganese oxides as highly active catalysts for enhanced hydrolysis of bis(4-nitrophenyl)phosphate and catalytic decomposition of methanol

Original language description

Manganese oxide-based (MnO ) catalysts have received increasing attention due to their low cost, low toxicity, and the ability to degrade organic molecules under mild conditions. In this work, several nanostructured MnObased catalysts were preparedviaredox reactions of manganese compounds in an aqueous solution and alkaline precipitation with aqueous ammonia. A wide arsenal of analytical techniques, including nitrogen physisorption (BJH and BET), X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), temperature-programmed reduction (H2-TPR), X-ray photoelectron spectroscopy (XPS), X-ray fluorescence (XRF), and Raman spectroscopy were applied for their characterization. The nanostructured MnO exhibited high catalytic activity in hydrolysis of phosphate diester-based substrate bis(4-nitrophenyl)phosphate (BNPP) at 328 K. Furthermore, MnO specimens were also studied in decomposition of methanol to carbon monoxide and hydrogen as a potential alternative fuel. The results show high dependency of the materials catalytic properties on the synthesis method. It was found that the varying fractions of redox-active Mn /Mn /Mn surface sites and the high proportion of oxygen species (such as O or O ) together with the particle dispersion and morphology are important for high catalytic activity of MnO in both investigated catalytic reactions. Based on the experimental data, possible mechanisms of BNPP hydrolysis and methanol decomposition were proposed and discussed in detail.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/LM2018124" target="_blank" >LM2018124: Nanomaterials and Nanotechnologies for Environment Protection and Sustainable Future</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Name of the periodical

Catalysis Science &Technology

ISSN

2044-4753

e-ISSN

2044-4761

Volume of the periodical

11

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

1766-1779

UT code for WoS article

000629000400010

EID of the result in the Scopus database

2-s2.0-85103068105