Novel Fe-Pd/SiO2 catalytic materials for degradation of chlorinated organic compounds in water

Novel Fe-Pd/SiO2 catalytic materials for degradation of chlorinated organic compounds in water Full article

Journal

Pure and Applied Chemistry
ISSN: 0033-4545 , E-ISSN: 1365-3075

Output data

Year: 2014, Volume: 86, Number: 7, Pages: 1141-1158 Pages count : 18 DOI: 10.1515/pac-2014-0207

Authors

Kustov Leonid M. ³ , Al-Abed Souhail R. ¹ , Virkutyte Jurate ² , Kirichenko Olga A. ³ , Shuvalova Elena V. ³ , Kapustin Gennady I. ³ , Mishin Igor V. ³ , Nissenbaum Vera D. ³ , Tkachenko Olga P. ³ , Finashina Elena D. ³

Affiliations

1	National Risk Management Research Laboratory, U.S. Environmental Protection Agency, Cincinnati, OH, USA
2	Hammontree and Associates Limited, North Canton, OH, USA
3	N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia

Novel reactive materials for catalytic degradation of chlorinated organic compounds in water at ambient conditions have been prepared on the basis of silica-supported Pd-Fe nanoparticles. Nanoscale Fe-Pd particles were synthesized inside porous silica supports using (NH4)3[Fe(C2O4)3] and [Pd(NH3)4]Cl2 or Pd acetate as reaction precursors. According to temperature programmed reduction (TPR) studies, Pd introduction decreased the reduction temperature of the supported Fen+ species and nearly complete reduction with H2 was observed at 400 °C. The successful surface loading with Pd was confirmed by X-ray photoelectron spectroscopy (XPS) analysis. Characterization of the samples by X-ray diffraction (XRD) and X-ray absorption near-edge structure + extended X-ray absorption fine structure (XANES + EXAFS) verified the presence of highly dispersed Pd0, Pdx Fe1–x and Fe0 phases. Reduction of the supported precursors in hydrogen resulted in materials that were highly active in perchloroethene (PCE) degradation and 2-chlorobiphenyl (2-ClBP) dechlorination. It was found that highly dispersed amorphous Fe-Pd bimetallic nanoparticles on silica support showed superior catalytic activity against PCE dechlorination in comparison to the free-standing Fe-Pd nanoparticles. For the samples with the same Fe content, the conversion of chlorinated organics as well as the stability increased with the Pd loading, e.g., the most effective degradation of PCEs and 2-ClBP was achieved at a Pd loading of 2.3–3.2 wt. %.

Kustov L.M. , Al-Abed S.R. , Virkutyte J. , Kirichenko O.A. , Shuvalova E.V. , Kapustin G.I. , Mishin I.V. , Nissenbaum V.D. , Tkachenko O.P. , Finashina E.D.
Novel Fe-Pd/SiO2 catalytic materials for degradation of chlorinated organic compounds in water
Pure and Applied Chemistry. 2014. V.86. N7. P.1141-1158. DOI: 10.1515/pac-2014-0207 WOS Scopus OpenAlex

Web of science:	WOS:000339873900007
Scopus:	2-s2.0-84925282003
OpenAlex:	W2153903689

DB	Citing
OpenAlex	18
Scopus	19
Web of science	16