Supplementary Information For s1

Supplementary information for:

Multifunctional Biosensor Based on Self-Assembled Multi-walled Carbon Nanotubes Sponge

Yingchun Li, Minggang Zhao*, Jing Chen, Sisi Fan, Jingjing Liang, Longjiang Ding,

Shougang Chen*

This file includes:

Supplementary Figures S1– S5

1 Supplementary Figures

Fig. S1. The choice of suitable crosslinking degree. (a) The macro morphology of

MWCNTs sponge with different crosslinking degree (1:10 – 1:14). (b) CV curves of electrode modified by MWCNTs sponge with different crosslinking degree (1:7 –

1:11) in PBS with 5 mM DA in a scan rate of 0.1 V·s -1. The right one is an enlarged view.

2 Fig. S2. The MWCNTs sponge which cannot be burn with fire.

Fig. S3. Current–time response of MWCNTs sponge with adding 0.01 mM DA, AA and UA in turn at the potential of +0.35 V.

3 Fig. S4. A cartoon model of the MWCNTs sponges, which acted as a matrix for immobilizing GOx.

Fig. S5. Current–time response of MWCNTs/GOx sponge with adding the same concentration of AA, DA, UA and glucose in turn at the potential of +0.6 V.