Degradation of rhodamine B photocatalyzed by hydrothermally prepared Pd-doped Bi2MoO6 nanoplates

• Published in: Journal of the Australian Ceramic Society Vol. 58; no. 1; pp. 71 - 82
• Main Authors: Phuruangrat, Anukorn, Buapoon, Saowaluk, Bunluesak, Thanaporn, Suebsom, Piyada, Thongtem, Somchai, Thongtem, Titipun
• Format: Journal Article
• Language: English
• Published: Singapore Springer Singapore 01-02-2022
• Subjects: Ceramics; Chemistry and Materials Science; Composites; Glass; Inorganic Chemistry; Materials Engineering; Materials Science; Natural Materials; Pd-doped Bi; nanoplates; Spectroscopy; Main active radicals; MoO; Photocatalysis
• ISSN: 2510-1560; 2510-1579
• DOI: 10.1007/s41779-021-00665-3

0–5% Pd-doped Bi
2
MoO
6
nanoplates as visible-light-driven photocatalysts were successfully prepared in this research. The XRD patterns of as-prepared Pd-doped Bi
2
MoO
6
samples were indexed to pure orthorhombic Bi
2
MoO
6
phase with no impurity detection. The Raman and FTIR wavenumbers of Pd-doped Bi
2
MoO
6
nanoplates were significantly shifted by the change of energy bonds in Bi
2
MoO
6
nanoplates, including the TEM characterization of the growth of nanoplates through the exposure {020} facet. Main symmetric stretching vibration of MoO
6
containing in Pd-doped Bi
2
MoO
6
nanoplates were also detected. XPS of 3% Pd-doped Bi
2
MoO
6
nanoplates revealed the binding energies of Pd 3d
5/2
and Pd 3d
3/2
core levels, which are indicative of incorporated Pd
2+
ions in Bi
2
MoO
6
lattice. The photocatalytic activities of Bi
2
MoO
6
with and without being loaded with Pd dopant monitored through the degradation of rhodamine B were increased from 38.36% for Bi
2
MoO
6
to 97.12% for 3% Pd-doped Bi
2
MoO
6
photodegraded by h
+
and
·
O
2
−
main active radicals. The 3% Pd-doped Bi
2
MoO
6
nanoplates were very stable and reusable for wastewater treatment.