S-1

Supplementary Materials

Mechanism of formation of framework Fe3+ in bimetallic Ag-Fe mordenites -

effective catalytic centers for deNOx reaction

M.G. Shelyapina1*, J. Gurgul2, K. Łątka3, P. Sánchez-López4, D. Bogdanov1, V. Petranovskii4, S. Fuentes4

1Saint Petersburg State University, 7/9 Universitetskaya nab., Saint Petersburg 199034, Russia 2Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239

Krakow, Poland 3M. Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland 4Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California,

C.P. 22860 México

*Corresponding author: Department of Nuclear Physics Research Methods, Saint Petersburg State University,

198504, Ulyanovskaya 1, Peterhof, Russia.

E-mail address: marina.shelyapina@spbu.ru (M.G. Shelyapina).

10 20 30 40 50

MOR

Ag-MOR-60

Fe-MOR-60

AgFe-MOR-60

FeAg-MOR-60

mAgFe-MOR-60

2(deg.)

36 37 38 39 402(deg.)

MOR

Ag-MOR-60

Fe-MOR-60

AgFe-MOR-60

FeAg-MOR-60

mAgFe-MOR-60

(a) (b)

Figure S1. Full XRD patterns of the studied samples synthetized at 60 oC (a) and a selected range with

expected fcc-Ag (111) diffraction peak (b).

S-2

Ag-MOR-20

AgFe-MOR-20

Na-MOR

Ag-MOR-60

AgFe-MOR-60

S-3

Figure S2. SEM images for all the studied materials.

FeAg-MOR-20

mAgFe-MOR-20

Fe-MOR-20

FeAg-MOR-60

mAgFe-MOR-60

Fe-MOR-60

S-4

-10 -5 0 5 10

431

432

433

434

435

436

437

438

Velocity (mm/s)

Nu

mbe

r o

f co

un

ts /

10

4

AgFe-MOR20

-10 -5 0 5 10

197

198

199

200

201

202

Num

ber

of counts

/10

4

Velocity (mm/s)

AgFe-MOR-60

-10 -5 0 5 10

145

146

147

Num

ber

of counts

/10

4

Velocity (mm/s)

FeAg-MOR-20

-10 -5 0 5 10

169

170

171

172

173

174

N

um

ber

of counts

/10

4

Velocity (mm/s)

FeAg-MOR-60

S-5

-10 -5 0 5 10

950

952

954

956

958

960

962

964

Velocity (mm/s)

Num

ber

of counts

/10

3

mAgFe-MOR-20

-10 -5 0 5 10

358

359

360

361

362

363

364

365

Num

ber

of counts

/10

4

Velocity (mm/s)

mAgFe-MOR-60

-10 -5 0 5 10

354

356

358

360

362

364

366

Num

ber

of counts

/10

4

Velocity (mm/s)

Fe-MOR-20

-10 -5 0 5 10

746

748

750

752

754

756

758

760

762

764

766

Velocity (mm/s)

Num

ber

of counts

/10

4

Fe-MOR-60

Figure S3. Room temperature 57Fe Mössbauer spectra and their decomposition for the studied Fe-containing materials. The light grey and

middle grey components are related to the Fe3+ in tetrahedral sites, (Td)1 and (Td)2, respectively. The dark grey component corresponds to

Fe3+ in octahedral sites, (Oh). Yellow line corresponds to magnetic/superparamagnetic components.