PMID- 34693128
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20211026
IS  - 2470-1343 (Electronic)
IS  - 2470-1343 (Linking)
VI  - 6
IP  - 41
DP  - 2021 Oct 19
TI  - Effect of Oxygen Functional Groups in Reduced Graphene Oxide-Coated Silk 
      Electronic Textiles for Enhancement of NO(2) Gas-Sensing Performance.
PG  - 27080-27088
LID - 10.1021/acsomega.1c03658 [doi]
AB  - An electronic textile-based NO(2) gas sensor was fabricated using commercial silk 
      and graphene oxide (GO). It showed a fast response time and excellent sensing 
      performance, which was simply accomplished by modifying the heat-treatment 
      process. The heat treatment was conducted at 400  degrees C and different heating rates 
      of 1, 3, and 5  degrees C/min. Compared with our previous research, the response time 
      significantly decreased, from 32.5 to 3.26 min, and we found that the highest 
      response was obtained with the sensor treated at a heating rate of 1  degrees C/min. To 
      find the reason for this enhanced sensing performance, the morphology, structure, 
      and chemical composition of the reduced GO (rGO) were investigated, depending on 
      the thermal treatment process, using scanning electron microscopy, X-ray 
      diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy. We also 
      measured the temperature-dependent resistance of rGO, which was well described by 
      the fluctuation-induced tunneling (FIT) model. These results revealed that the 
      rGO thermally treated with 1  degrees C/min of heating rate had the largest amount of 
      oxygen groups. This means that the oxygen functional groups play an important 
      role in NO(2) gas-sensing performance.
CI  - (c) 2021 The Authors. Published by American Chemical Society.
FAU - Jung, Won Taek
AU  - Jung WT
AD  - Department of Physics, Incheon National University, Incheon 22012, Republic of 
      Korea.
FAU - Jang, Hyun-Seok
AU  - Jang HS
AD  - Department of Physics, Incheon National University, Incheon 22012, Republic of 
      Korea.
FAU - Jeon, Jun Woo
AU  - Jeon JW
AUID- ORCID: 0000-0003-1892-727X
AD  - Department of Physics, Incheon National University, Incheon 22012, Republic of 
      Korea.
FAU - Kim, Byung Hoon
AU  - Kim BH
AUID- ORCID: 0000-0003-1118-8590
AD  - Department of Physics, Incheon National University, Incheon 22012, Republic of 
      Korea.
AD  - Intelligent Sensor Convergence Research Center, Incheon National University, 
      Incheon 22012, Republic of Korea.
AD  - Institute of Basic Science, Incheon National University, Incheon 22012, Republic 
      of Korea.
LA  - eng
PT  - Journal Article
DEP - 20211006
PL  - United States
TA  - ACS Omega
JT  - ACS omega
JID - 101691658
PMC - PMC8529668
COIS- The authors declare no competing financial interest.
EDAT- 2021/10/26 06:00
MHDA- 2021/10/26 06:01
PMCR- 2021/10/06
CRDT- 2021/10/25 06:44
PHST- 2021/07/11 00:00 [received]
PHST- 2021/09/29 00:00 [accepted]
PHST- 2021/10/25 06:44 [entrez]
PHST- 2021/10/26 06:00 [pubmed]
PHST- 2021/10/26 06:01 [medline]
PHST- 2021/10/06 00:00 [pmc-release]
AID - 10.1021/acsomega.1c03658 [doi]
PST - epublish
SO  - ACS Omega. 2021 Oct 6;6(41):27080-27088. doi: 10.1021/acsomega.1c03658. 
      eCollection 2021 Oct 19.