Study on co-precursor driven solid state thermal conversion of iron(III)citrate to iron oxide nanomaterials

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18470%2F23%3A50020803" target="_blank" >RIV/62690094:18470/23:50020803 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s00339-023-06559-4" target="_blank" >https://link.springer.com/article/10.1007/s00339-023-06559-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00339-023-06559-4" target="_blank" >10.1007/s00339-023-06559-4</a>

Result language

angličtina

Original language name

Study on co-precursor driven solid state thermal conversion of iron(III)citrate to iron oxide nanomaterials

Original language description

We explore the solventless synthesis of iron oxide nanomaterials obtained on thermal conversion of iron(III)citrate in presence of malonic acid and glucose as co-precursors in varying weight ratios and physical characterization of the materials obtained. Pure phase of hematite was found only for a particular combination of precursor and co-precursor and else a mixture of hematite and magnetite. Significant effect of the co-precursors on the nature and size of the synthesized materials was noticed. Gradual conversion of hematite to magnetite with increasing amount of co-precursor was established. Morin transition was observed in the temperature dependent magnetization study for the hematite materials. Absorption spectroscopy exhibited three different electronic transitions that take place within the 3d(5) shell of the octahedrally coordinated Fe3+ ions for hematite materials. The optical (direct and indirect) band gaps estimated from the Tauc&apos;s plot showed particle size dependence. From photoluminescence study the transitions of trapped electrons in various defect states of oxygen vacancies were observed which led to the appearance of nonradiative peaks. In the Raman spectra the significant bands of hematite (A(1g) and E-g bands) were noted. From morphology study the hematite nanomaterials appear as clusters of large irregular shaped particles of various sizes. Formation of hematite nanomaterials as observed by XRD studies was supplemented by the SAED patterns obtained in the HRTEM study. Present study established that nano-sized pure hematite materials can be thermally synthesized at comparatively lower temperature on thermal decomposition of iron(III)citrate by varying the weight ratio of suitable co-precursors.

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

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Applied Physics A: Materials Science and Processing

ISSN

0947-8396

e-ISSN

1432-0630

Volume of the periodical

129

Issue of the periodical within the volume

4

Country of publishing house

DE - GERMANY

Number of pages

15

Pages from-to

"Article Number: 264"

UT code for WoS article

000952231500002

EID of the result in the Scopus database

2-s2.0-85150681735