<p>Supplementary information for:</p><p>Multifunctional Biosensor Based on Self-Assembled Multi-walled Carbon Nanotubes Sponge</p><p>Yingchun Li, Minggang Zhao*, Jing Chen, Sisi Fan, Jingjing Liang, Longjiang Ding, </p><p>Shougang Chen*</p><p>This file includes: </p><p>Supplementary Figures S1– S5</p><p>1 Supplementary Figures</p><p>Fig. S1. The choice of suitable crosslinking degree. (a) The macro morphology of</p><p>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 –</p><p>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.</p><p>2 Fig. S2. The MWCNTs sponge which cannot be burn with fire. </p><p>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.</p><p>3 Fig. S4. A cartoon model of the MWCNTs sponges, which acted as a matrix for immobilizing GOx.</p><p>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.</p><p>4</p>