氨基修饰碳点与酞菁锌复合结构的制备与性能

doi:10.7503/cjcu20140930

高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (4): 619.doi: 10.7503/cjcu20140930

• 研究论文: 无机化学 • 上一篇下一篇

氨基修饰碳点与酞菁锌复合结构的制备与性能

丁艳丽, 胡胜亮(), 常青

中北大学材料科学与工程学院, 太原 030051

收稿日期:2014-10-20 出版日期:2015-04-10 发布日期:2015-03-27
作者简介:联系人简介: 胡胜亮, 男, 博士, 教授, 主要从事碳量子点及其应用研究. E-mail: hsliang@yeah.net
基金资助:
国家自然科学基金(批准号: 51172214)和山西省优秀青年科学基金(批准号: 2014021008)资助

Preparation and Characterization of Composites of Amine-functionalized Carbon Dots and Zinc Phthalocyaine^†

DING Yanli, HU Shengliang^*(), CHANG Qing

School of Material Science and Engineering, North University of China, Taiyuan 030051, China

Received:2014-10-20 Online:2015-04-10 Published:2015-03-27
Contact: HU Shengliang E-mail:hsliang@yeah.net
Supported by:
† Supported by the National Natural Science Foundation of China(No.51172214) and the Excellent Young Scientist Foundation of Shanxi Pro-vince, China(No.2014021008)

摘要/Abstract

摘要：

通过混合氨基修饰碳点(N-CDs)与酞菁锌(PcZn)合成了静电结合的N-CDs/PcZn复合结构. 利用荧光光谱、紫外-可见吸收光谱、循环伏安测试和光催化活性表征证实了N-CDs的光激发电子通过界面转移到了PcZn分子上, 然后在PcZn上发生辐射复合, 导致PcZn的荧光发射增强. 由于N-CDs上的激发电子转移到了PcZn分子上, 促使了其与空穴的分离, 阻碍了N-CDs上的辐射复合发生, 因此提高了N-CDs/PcZn复合体系的光催化活性. 反应温度会影响N-CDs/PcZn复合体系的稳定性和光转换能力, 在常温下制备的N-CDs/PcZn复合结构具有最佳的光物理与化学性能.

关键词: 碳点, 酞菁锌, 电子转移, 荧光性能, 光催化性能

Abstract:

Amine-functionalized carbon dots(N-CDs) and zinc phthalocyaine(PcZn) were combined by electrostatic bonding under the mechanical stirring, resulting in a new composite, i.e. N-CDs/PcZn. The photoinduced excited electron transfer via the interface between N-CDs and PcZn was determined through fluorescence spectra, UV-Vis absorption spectra, infrared spectra and cyclic voltammetry. The excited electrons of N-CDS were transfered onto the PcZn molecules and then relaxed by radiative recombination, causing the enhanced fluorescence emission of PcZn. On the other hand, the separation of electron-hole pair on N-CDs was realized and thus limited the possibility of radiative combination on N-CDs. Therefore, the composite of N-CDs/PcZn showed a high photocatalytic activity. Moreover, the stability and the photon conversion ability of N-CDs/PcZn composites depended on the reaction temperature. The experimental results suggest that room temperature is the optimum to obtain composite with good performance.

Key words: Carbon dots, Zinc phthalocyaine, Electronic transfer, Fluorescent property, Photocatalytic property

中图分类号:

O613
O657

TrendMD:

丁艳丽, 胡胜亮, 常青. 氨基修饰碳点与酞菁锌复合结构的制备与性能. 高等学校化学学报, 2015, 36(4): 619.

DING Yanli, HU Shengliang, CHANG Qing. Preparation and Characterization of Composites of Amine-functionalized Carbon Dots and Zinc Phthalocyaine^†. Chem. J. Chinese Universities, 2015, 36(4): 619.

图/表 9

Fig.1 UV-Vis spectra(A) and photocatalytic activities toward MB degradation(B) of N-CDs(a), PcZn(b) and S1(c)

Fig.2 IR spetra of N-CDs, PcZn, S1(A) and TEM image of S1(B)

Fig.3 Dependence of fluorescence emission from the given PcZn(excited at 600 nm) on the concentrations of N-CDs(A) and from the given N-CDs(excited at 400 nm) on concentrations of PcZn(B) (A) Volume of PcZn solution is 1 mL. Volume of N-CDs solution/mL: a. 0; b. 1; c. 3; d. 4.(B) Volume of N-CDs solution is 1 mL. Volume of PcZn solution/mL: a. 0; b. 1; c. 3; d. 4.

Fig.4 CV curves of N-CDs(A) and PcZn(B) in 0.1 mol/L TBAP

Fig.5 Schematic of the photoinduced charge behavior of the N-CDs/PcZn system excited at the visible light

Fig.6 UV-Vis spectra(A) and photocatalytic activities(B) of samples S1—S5

Fig.7 IR spectra of samples S1(a) and S5(b)

Fig.8 Effects of the standing time of N-CDs, PcZn, S1 and S5 on fluorescence emission intensities excited at 400 nm(A) and 600 nm(B), respectively

Fig.9 Fluorescence emission spectra(excited at 600 nm) of samples S1(A) and S5(B) with different standing time

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氨基修饰碳点与酞菁锌复合结构的制备与性能

Preparation and Characterization of Composites of Amine-functionalized Carbon Dots and Zinc Phthalocyaine^†

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氨基修饰碳点与酞菁锌复合结构的制备与性能

Preparation and Characterization of Composites of Amine-functionalized Carbon Dots and Zinc Phthalocyaine†

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Preparation and Characterization of Composites of Amine-functionalized Carbon Dots and Zinc Phthalocyaine^†