PMID- 28285200
OWN - NLM
STAT- MEDLINE
DCOM- 20171129
LR  - 20221207
IS  - 1873-4235 (Electronic)
IS  - 0956-5663 (Linking)
VI  - 94
DP  - 2017 Aug 15
TI  - Enhanced photocurrent production by the synergy of hematite nanowire-arrayed 
      photoanode and bioengineered Shewanella oneidensis MR-1.
PG  - 227-234
LID - S0956-5663(17)30157-4 [pii]
LID - 10.1016/j.bios.2017.03.006 [doi]
AB  - Coupling the light-harvesting capabilities of semiconductors with the catalytic 
      power of bacteria is a promising way to increase the efficiency of 
      bioelectrochemical systems. Here, we reported the enhanced photocurrents produced 
      by the synergy of hematite nanowire-arrayed photoanode and the bio-engineered 
      Shewanella oneidensis MR-1 in a solar-assisted microbial photoelectrochemical 
      system (solar MPS) under the visible light. To increase the supply of 
      bioelectrons, the D-lactate transporter, SO1522, was overexpressed in the 
      recombinant S. oneidensis (T-SO1522) that could digest D-lactate 61% faster than 
      the wild-type S. oneidenesis. Without light illumination, the addition of either 
      the wild-type or the recombinant S. oneidensis to the system did not induce any 
      obvious increase in the current output. However, under one-sun illumination, the 
      photocurrent of the abiotic control was 16+/-2 muA cm(-2) at 0.8V vs. Ag/AgCl, and 
      the addition of the wild-type S. oneidensis and the recombinant S. oneidensis 
      increased the photocurrent to 70+/-6 and 95+/-8 muA cm(-2), respectively, at 0.8V vs. 
      Ag/AgCl. Moreover, the solar MPS with T-SO1522 presented quick and repeatable 
      responses to the on/off illumination cycles, and had relatively stable 
      photocurrent generation in the 273-h operation. Scanning electron microscope 
      (SEM) images showed that the cell density on the hematite photoelectrode was 
      similar between the recombinant and the wild-type S. oneidensis. These findings 
      revealed the pronounced influence of metabolic rates on the light-to-electricity 
      conversion in the complex photocatalyst-electricigen hybrid system, which is 
      important to promote the development of the solar MPS for electricity production 
      and wastewater treatment.
CI  - Copyright (c) 2017 Elsevier B.V. All rights reserved.
FAU - Zhu, Gaolong
AU  - Zhu G
AD  - The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College 
      of Environmental Sciences and Engineering, Peking University, Beijing 100871, 
      China; School of Energy Science and Engineering, University of Electronic Science 
      and Technology, Chengdu, Sichuan, 611731, China.
FAU - Yang, Yun
AU  - Yang Y
AD  - School of Chemistry and Environment, Beihang University, Beijing 100191, China.
FAU - Liu, Juan
AU  - Liu J
AD  - The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College 
      of Environmental Sciences and Engineering, Peking University, Beijing 100871, 
      China. Electronic address: juan.liu@pku.edu.cn.
FAU - Liu, Feng
AU  - Liu F
AD  - The Key Laboratory of Water and Sediment Sciences, Ministry of Education, College 
      of Environmental Sciences and Engineering, Peking University, Beijing 100871, 
      China.
FAU - Lu, Anhuai
AU  - Lu A
AD  - The Key Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and 
      Space Sciences, Peking University, Beijing, China.
FAU - He, Weidong
AU  - He W
AD  - School of Energy Science and Engineering, University of Electronic Science and 
      Technology, Chengdu, Sichuan, 611731, China. Electronic address: 
      weidong.he@uestc.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20170308
PL  - England
TA  - Biosens Bioelectron
JT  - Biosensors & bioelectronics
JID - 9001289
RN  - 0 (Waste Water)
RN  - 33X04XA5AT (Lactic Acid)
SB  - IM
MH  - *Bioelectric Energy Sources
MH  - Biosensing Techniques/*methods
MH  - Lactic Acid/chemistry
MH  - Light
MH  - Microscopy, Electron, Scanning
MH  - Nanowires/*chemistry
MH  - Shewanella/*chemistry/metabolism
MH  - Wastewater/microbiology
OTO - NOTNLM
OT  - Bio-engineered Shewanella oneidensis MR-1
OT  - Bioelectron supply
OT  - Hematite nanowire-arrayed photoelectrode
OT  - Light-to-electricity conversion
OT  - Solar-assisted microbial photoelectrochemical system
EDAT- 2017/03/13 06:00
MHDA- 2017/12/01 06:00
CRDT- 2017/03/13 06:00
PHST- 2017/01/22 00:00 [received]
PHST- 2017/03/03 00:00 [revised]
PHST- 2017/03/05 00:00 [accepted]
PHST- 2017/03/13 06:00 [pubmed]
PHST- 2017/12/01 06:00 [medline]
PHST- 2017/03/13 06:00 [entrez]
AID - S0956-5663(17)30157-4 [pii]
AID - 10.1016/j.bios.2017.03.006 [doi]
PST - ppublish
SO  - Biosens Bioelectron. 2017 Aug 15;94:227-234. doi: 10.1016/j.bios.2017.03.006. 
      Epub 2017 Mar 8.