Carbon quantum dots (CQDs) modified TiO2 nanorods photoelectrode for enhanced photocathodic protection of Q235 carbon steel

被引：67
作者：
Feng, Min [1 ,2 ]
Liu, Ying [2 ]
Zhang, Sainan [2 ]
Liu, Yupeng [1 ,3 ]
Luo, Ning [3 ]
Wang, Daoai [1 ,3 ]
机构：
[1] Chinese Acad Sci, State Key Lab Solid Lubricat, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China
[2] Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Peoples R China
[3] Qingdao Ctr Resource Chem & New Mat, Qingdao 266100, Peoples R China
来源：
CORROSION SCIENCE | 2020年 / 176卷
关键词：
Titanium; Carbon steel; XPS; EIS; Cathodic protection; ATOMIC LAYER DEPOSITION; CORROSION PROTECTION; NANOTUBE ARRAYS; FILMS; NANOMATERIALS; PHOTOANODES; FABRICATION; COMPOSITES; DYNAMICS; SURFACE;
D O I：
10.1016/j.corsci.2020.108919
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new photoanode of Al2O3 anchored carbon quantum dots/TiO2 nanorods (Al/C/TNRs) was constructed for efficient photocathodic protection of Q235 carbon steel (CS) by hydrothermal treatment and ALD process. The Al/C/TNRs photoanode achieved a photocurrent density of 2.28 mA/cm(2) under simulated sunlight (AM 1.5 G), and could maintain for 7 days nearly without decay. Potential of Q235 CS was negatively shifted by 620 mV after coupling with Al/C/TNRs in 3.5 wt% NaCl solution, and could maintain more than 7 h. The high and stable photoelectrochemical performances of Al/C/TNRs indicate potential photocathodic protection for Q235 CS in marine environment.
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页数：10
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