Supplementary Material

for the manuscript

Coating porous membranes with a photocatalyst: Comparison of

LbL self-assembly and plasma-enhanced CVD techniques

by

Brian J. Starr1, Volodymyr V. Tarabara1*, Ming Zhou2, Stéphanie Roualdès2, André

Ayral2

1 Department of Civil and Environmental Engineering, Michigan State University,

East Lansing, MI 48824, USA

2 Institut Européen des Membranes, CNRS-ENSCM-UM, cc047, Université de

Montpellier, Place Eugène Bataillon, F-34095 Montpellier cedex 5, France

April 10, 2016

Corresponding author

1

(A)

Element Line Type

k Ratio Wt% Wt% Sigma

Atomic % Standard Label

Factory Standard

C K series

0.24936 32.02 0.32 40.17 C Vit Yes

O K series

0.28405 61.33 0.32 57.76 SiO2 Yes

Na K series

0.00317 0.56 0.07 0.37 Albite Yes

Al K series

0.00149 0.14 0.03 0.08 Al2O3 Yes

Ca K series

0.00383 0.23 0.03 0.09 Wollastonite Yes

Ti K series

0.05843 3.93 0.07 1.24 Ti Yes

Zr L series

0.02548 1.77 0.11 0.29 Zr Yes

Total: 100.00 100.00

Figure S1: EDS spectrum collected from (A) medium sublayer (see Figure 4B) and (B) top layer (see Figure 4C) of an uncoated membrane.

2

(B)

Element Line Type

k Ratio Wt% Wt% Sigma

Atomic % Standard Label

Factory Standard

Standard Calibration

DateC K

series0.72689 51.80 0.26 59.42 C Vit Yes

O K series

0.23883 46.52 0.26 40.07 SiO2 Yes

Na K series

0.00383 0.43 0.04 0.26 Albite Yes

Ca K series

0.00281 0.12 0.01 0.04 Wollastonite Yes

Ti K series

0.00699 0.33 0.02 0.10 Ti Yes

Fe K series

0.00068 0.03 0.01 0.01 Fe Yes

Zr L series

0.01593 0.76 0.06 0.11 Zr Yes

Total: 100.00 100.00

Figure S1 (continued): EDS spectrum collected from (A) medium sublayer (see Figure 4B) and (B) top layer (see Figure 4C) of an uncoated membrane.

3

Figure S2: SEM images of the permeate side of an uncoated ceramic membrane

4

5

Figure S3: SEM images of the permeate side of a ceramic membrane coated with TiO2 nanoparticles by the LbL method.

6

7

Figure S3(continued):

SEM images of the permeate side of a ceramic membrane coated with TiO2 nanoparticles by the LbL method.

8

9

Figure S3(continued):

SEM images of the permeate side of a ceramic membrane coated with TiO2 nanoparticles by the LbL method.

10

Figure S4: SEM images of the permeate side of a ceramic membrane coated with TiO2 by PECVD method.

11