Synthesis of Halogenated Aminobenzonitrile Modificated Carbon Nitride Materials and Their Photocatalic Hydrogen Evolution from Water
Halogenated aminobenzonitrile modificated carbon nitride materials were prepared by copolymerization, and named as g-C3N4, F-ABN-CN0.05, Cl-ABN-CN0.0s, Br-ABN-CN0.05 and I-ABN-CN0.05 respectively.Photocurrent of the above materials were (sorted in order of size): I-ABN-CN0.05 (I=1.21 μA·cm-2)＞ Br-ABN-CN0.05 (I=0.93μA·cm-2)＞ F-ABN-CN0.05 (I=0.82μA·cm-2) ＞ Cl-ABN-CN0.05 (I=0.67μA·cm-2) ＞g-C3N4 (I=0.39μA·cm-2).The photocatalytic efficiency of the above materials for hydrogen evolution from water containing 10 Vol.-％ TEOA as sacrifice agent under visible light(≥400 nm) by 4.0 wt.-％ Pt loading were (Sorted in order of size): I-ABN-CN0.05 (84.12 μmol·h-1) ＞ Br-ABN-CN0.05 (55.35 μmol·h-1) ＞ Cl-ABN-CN0.05 (49.12 μmol·h-1) ＞ F-ABN-CN0.05 (41.46 μmol·h-1) ＞g-C3N4(13.62amol·h-1).The photocalytic efficiency ofI-ABN-CN0.05 is the highest and it is about 6.2 times as that of g-C3N4.It comes down to that 1 g-C3N4 could be substituted by Iodine in sp2-hybridized N elements form a heterocyclic aromatic expansion compared to other halogen ion.Additionally, iodide ion doped g-C3N42, 3 enhanced optical absorption ofg-C3N4, the combination of this two factors lead to the improvement of photocatalytic efficiency of the materials for hydrogen evolution from water.
Yiquan Miao Yingliang Liu Shengang Xu Shaokui Cao
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
国际会议
9th International Symposium on High-Tech Polymer Materials(第9届国际高技术高分子材料学术会议)(HTPM-9)
郑州
英文
135-135
2016-07-11（万方平台首次上网日期，不代表论文的发表时间）