Graphitic Carbon Nitride Prepared by Rapid Recrystallization for Photoelectrochemical Anticorrosion

被引：31

作者：

Li, Wanfeng ^{[1
,3
]}

Wang, Yi ^{[1
,3
]}

Yang, Xiaoyu ^{[1
,3
,4
]}

Liu, Faqian ^{[1
,3
]}

Li, Weihua ^{[1
,2
,3
]}

机构：

[1] Sun Yat Sen Univ, Sch Chem Engn & Technol, Guangzhou 510275, Guangdong, Peoples R China

[2] Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China

[3] Sun Yat Sen Univ, Southern Marine Sci & Engn Guangdong Lab Zhuhai, Guangzhou 510275, Guangdong, Peoples R China

[4] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

来源：

ACS APPLIED NANO MATERIALS | 2019年 / 2卷 / 12期

基金：

中国国家自然科学基金;

关键词：

graphitic carbon nitride; multilayer homojunction structure; rapid recrystallization; photoelectrochemical cathodic protection; carbon steel; CATHODIC PROTECTION PERFORMANCE; HIGHLY EFFICIENT; PHOTOCATALYTIC ACTIVITY; SEMICONDUCTORS; G-C3N4; WATER; NANOSHEETS; ZNO; CONSTRUCTION; TIO2;

D O I：

10.1021/acsanm.9b01639

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A multilayer homojunction structure of carbon nitride material is successfully realized by a strategy of rapid recrystallization. The evolution of homojunction structures is systematically investigated by SEM, XPS, nitrogen adsorption/desorption measurement, and photoluminescence characterization. The photoelectrochemical cathodic protection performance of graphitic carbon nitride for carbon steel is explored. The results show that the electric field built-in homojunction structure effectively improves the separation efficiency of photoinduced electrons and holes. The photoelectrochemical cathodic protection voltage of homojunction carbon nitride to carbon steel reaches 122 mV, which is 6 times that of bulk material (20 mV). Furthermore, this material exhibits excellent stability and provides as long as at least 3 h protection for carbon steel.

引用

页码：7559 / +

页数：13

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