Abstract：
:Bioelectrochemical systems (BESs) exhibit great potential for simultaneous wastewater treatment and energy recovery. However, the efficiency of microbial electrocatalysis is fundamentally limited by the high resistance and poor biocompatibility of electrode materials. Herein, we construct a novel "binder-free" 3D biocompatible bioelectrode consists of 1D aminated carbon nanotubes (CNTs-NH2) and 2D conductive reduced graphene oxide (rGO) nanosheets through one-step electrodeposition. As expected, the maximum current density reached to 3.25 ± 0.03 mA cm-2 with the rGO@CNTs-NH2 electrode, which is 4.33-fold higher than that of a bare rGO (0.75 ± 0.01 mA cm-2), and is among the best performance reported for three-dimensional electrodes. The high microbial electrocatalytic activity is mainly attributed to the excellent performance of electron transfer and bacterial colonization, which originates from the 3D interconnecting scaffold, fast 1D CNTs "e-bridge" and positively charged surface.
journal_name
Environ Resjournal_title
Environmental researchauthors
Yi G,Cui D,Yang L,Fang D,Chang Z,Cheng H,Shao P,Luo X,Wang Adoi
10.1016/j.envres.2020.110212subject
Has Abstractpub_date
2020-12-01 00:00:00pages
110212eissn
0013-9351issn
1096-0953pii
S0013-9351(20)31109-9journal_volume
191pub_type
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