Synthesis of hollow lantern-like Eu(III)-doped g-C3N4 with enhanced visible light photocatalytic perfomance for organic degradation

被引:123
作者
Wang, Min [1 ]
Guo, Pengyao [2 ]
Zhang, Yu [1 ]
Lv, Chunmei [1 ]
Liu, Tingyu [3 ]
Chai, Tianyu [1 ]
Xie, Yuanhua [1 ]
Wang, Youzhao [1 ]
Zhu, Tong [1 ]
机构
[1] Northeastern Univ, Sch Mech Engn & Automat, Shenyang 110011, Liaoning, Peoples R China
[2] Northeastern Univ, Sch Resources & Civil Engn, Shenyang 110011, Liaoning, Peoples R China
[3] Shenyang Second Senior High Sch, Shenyang 110014, Liaoning, Peoples R China
基金
中国国家自然科学基金;
关键词
g-C3N4; Eu doping; Hollow structure; Rhodamine B (RhB); Tetracycline(TC); GRAPHITIC CARBON NITRIDE; DOPED G-C3N4; HYDROGEN-PRODUCTION; PERFORMANCE; NO; PHOTOACTIVITY; EVOLUTION; OXIDATION; REMOVAL; BORON;
D O I
10.1016/j.jhazmat.2018.01.058
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A series of hollow structure lantern-like Eu(III)-doped g-C3N4 (xEu-CN, x = 1, 2, 3) was firstly synthesized by heating a mixture of melamine, HNO3 and Eu2O3 at 500 degrees C for 2 h. The phase, morphology and optical properties of the serial xEu-CN samples were characterized by different techniques, including TEM, XRD, FT-IR, SEM, XPS, BET, UV-vis, PL, photocurrent, and EIS. The results indicated that Eu doping extraordinarily enhanced the photocatalytic activity of pure g-C3N4, and the 2Eu-CN exhibited the highest photocatalytic performance with a 98% (82%) degradation rate for RhB (TC), 6.03 (1.71)-fold of pure g-C3N4(CN). The higher photocatalytic efficiency is ascribed to the synergy effect of Eu(III) and the hollow structures, which led to a larger surface specific area, bandgap narrowing, enhanced light harvesting ability and efficient charge separation.
引用
收藏
页码:224 / 233
页数:10
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