PMID- 31683922
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20191113
LR  - 20200108
IS  - 1424-8220 (Electronic)
IS  - 1424-8220 (Linking)
VI  - 19
IP  - 21
DP  - 2019 Nov 1
TI  - Effect of Oxidization Temperatures and Aging on Performance of Carbonate Melt 
      Oxidized Iridium Oxide pH Electrode.
LID - 10.3390/s19214756 [doi]
LID - 4756
AB  - Iridium oxide pH electrodes employing the carbonate melt oxidation method were 
      fabricated with oxidation temperatures of 750  degrees C, 800  degrees C and 850  degrees C, 
      respectively. Scanning electron microscope (SEM) and atomic force microscope 
      (AFM) images showed that the oxide film regularized with the increase in 
      oxidation temperatures. The pH response, response time and long-term stability of 
      the electrodes indicated that the electrodes made at 850  degrees C had the best 
      performance. X-ray photoelectron spectra (XPS) surveys investigated the change in 
      the electrodes' chemical composition and element oxidation states at 850  degrees C, and 
      the results showed that the relative content of Ir(3+) had increased by 23.9%, 
      and the Ir(4+) and Ir(6+) had decreased by 10.9% and 13%, respectively, in the 
      surface oxide layer after one month of aging. However, the relative contents of 
      Ir(3+), Ir(4+) and Ir(6+) were almost constant for the inner oxide layer. 
      Meanwhile, the XPS result also indicated that the outer oxide layer of the 
      electrode had a higher hydration degree than the inner oxide layer.
FAU - Wang, Penggang
AU  - Wang P
AD  - School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, 
      China. wangpenggang@qut.edu.cn.
AD  - Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, 
      Shenzhen University, Shenzhen 518060, China. wangpenggang@qut.edu.cn.
AD  - Shenzhen Durability Center for Civil Engineering, Shenzhen University, Shenzhen 
      518060, China. wangpenggang@qut.edu.cn.
FAU - Guo, Tengfei
AU  - Guo T
AD  - School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, 
      China. guotf127@163.com.
FAU - Zhao, Tiejun
AU  - Zhao T
AD  - School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, 
      China. ztjgp@qut.edu.cn.
AD  - Cooperative Innovation Center of Engineering Construction and Safety in Shandong 
      Blue Economic Zone, Qingdao 266033, China. ztjgp@qut.edu.cn.
FAU - Du, Zhenxing
AU  - Du Z
AD  - School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, 
      China. 18354229660@163.com.
FAU - Jin, Zuquan
AU  - Jin Z
AD  - School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, 
      China. jinzq@qut.edu.cn.
AD  - Cooperative Innovation Center of Engineering Construction and Safety in Shandong 
      Blue Economic Zone, Qingdao 266033, China. jinzq@qut.edu.cn.
FAU - Dong, Biqin
AU  - Dong B
AD  - Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, 
      Shenzhen University, Shenzhen 518060, China. incise@szu.edu.cn.
AD  - Shenzhen Durability Center for Civil Engineering, Shenzhen University, Shenzhen 
      518060, China. incise@szu.edu.cn.
FAU - Li, Zhe
AU  - Li Z
AUID- ORCID: 0000-0001-9379-6789
AD  - School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, 
      China. lizhequt@163.com.
LA  - eng
GR  - 51608286, 51420105015, U1706222/National Natural Science Foundation of China/
GR  - ZR2017ZC0737/Natural Science Foundation of Shandong province/
GR  - GDDCE 18-9/Guangdong Provincial Key Laboratory of Durability for Marine Civil 
      Engineering, Shenzhen Durability Center for Civil Engineering, Shenzhen 
      University/
GR  - 17-1-1-13-jch/the Source Innovation Program of Qingdao City/
PT  - Journal Article
DEP - 20191101
PL  - Switzerland
TA  - Sensors (Basel)
JT  - Sensors (Basel, Switzerland)
JID - 101204366
SB  - IM
PMC - PMC6865079
OTO - NOTNLM
OT  - carbonate melt oxidized
OT  - iridium oxide
OT  - microstructure
OT  - oxidation temperature
OT  - pH electrode
COIS- The authors declare no conflict of interest.
EDAT- 2019/11/07 06:00
MHDA- 2019/11/07 06:01
PMCR- 2019/11/01
CRDT- 2019/11/06 06:00
PHST- 2019/09/27 00:00 [received]
PHST- 2019/10/30 00:00 [revised]
PHST- 2019/10/31 00:00 [accepted]
PHST- 2019/11/06 06:00 [entrez]
PHST- 2019/11/07 06:00 [pubmed]
PHST- 2019/11/07 06:01 [medline]
PHST- 2019/11/01 00:00 [pmc-release]
AID - s19214756 [pii]
AID - sensors-19-04756 [pii]
AID - 10.3390/s19214756 [doi]
PST - epublish
SO  - Sensors (Basel). 2019 Nov 1;19(21):4756. doi: 10.3390/s19214756.