Nanostructured manganese oxides as highly active catalysts for enhanced hydrolysis of bis(4-nitrophenyl)phosphate and catalytic decomposition of methanol
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13440%2F21%3A43895834" target="_blank" >RIV/44555601:13440/21:43895834 - isvavai.cz</a>
Alternative codes found
RIV/44555601:13520/21:43895834
Result on the web
<a href="https://pubs.rsc.org/en/content/articlelanding/2021/cy/d0cy02112a#!divAbstract" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2021/cy/d0cy02112a#!divAbstract</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/D0CY02112A" target="_blank" >10.1039/D0CY02112A</a>
Alternative languages
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 (MnOx) 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 MnOx-based catalysts were prepared via redox 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 MnOx exhibited high catalytic activity in hydrolysis of phosphate diester-based substrate bis(4-nitrophenyl)phosphate (BNPP) at 328 K. Furthermore, MnOx 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 Mn2+/Mn3+/Mn4+ surface sites and the high proportion of oxygen species (such as O2MINUS SIGN or OMINUS SIGN ) together with the particle dispersion and morphology are important for high catalytic activity of MnOx 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
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/LM2018124" target="_blank" >LM2018124: Nanomaterials and Nanotechnologies for Environment Protection and Sustainable Future</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Catalysis Science & Technology
ISSN
2044-4761
e-ISSN
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Volume of the periodical
2021
Issue of the periodical within the volume
11
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