多壁碳纳米管-酞菁铜复合物的合成表征及光电性能

doi:10.3724/SP.J.1077.2011.00785

无机材料学报 ›› 2011, Vol. 26 ›› Issue (8): 785-791.DOI: 10.3724/SP.J.1077.2011.00785 CSTR: 32189.14.SP.J.1077.2011.00785

• 研究论文 • 下一篇

多壁碳纳米管-酞菁铜复合物的合成表征及光电性能

吴振奕¹, 杨绳岩²

(1. 厦门大学化学系, 厦门 361005; 2. 巢湖学院化学与材料科学系, 巢湖 238000)

收稿日期:2010-11-08 修回日期:2011-01-12 出版日期:2011-08-20 网络出版日期:2011-07-14
作者简介:吴振奕(1968-), 男, 副教授. E-mail: zywu@xmu.edu.cn
基金资助:
福建省科技厅资助项目(2009J01039)

Synthesis, Characterization and Photoelectric Properties of the Copper Phthalocyanine-modied Multi-walled Carbon Nanotubes

WU Zhen-Yi¹, YANG Sheng-Yan²

(1. College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; 2. Department of Chemistry and Material Science, Chaohu College, Chaohu 238000, China)

Received:2010-11-08 Revised:2011-01-12 Published:2011-08-20 Online:2011-07-14
Supported by:
Natural Science Foundation of Fujian Province of China (2009J01039)

摘要/Abstract

摘要： 采用氯磺酸作为磺化试剂, 在多壁碳纳米管上接枝氯磺酰基, 之后通过乙二胺的胺解反应, 制备出胺基修饰的多壁碳纳米管MWCNT-NH2, 并进一步与氯磺酰基酞菁铜反应制备出MWCNT-Pc复合物. 产物采用红外光谱,紫外可见, 拉曼光谱, X射线光电子能谱, 循环伏安, 热重分析等进行了表征. 结果表明, MWCNT-NH2上磺酰胺基接枝在MWCNT表面, 而MWCNT-Pc上的酞菁基团是通过MWCNT-NH₂上的酰胺基团与Pc形成复合物, 碳纳米管上约38个碳原子结合一个磺酸基酞菁分子; 该MWCNT-Pc复合物的热稳定性较MWCNT-NH2低; 利用喷涂法构筑了ITO/MWCNT-Pc光电极, 光电性能的研究结果表明在AM1.5光照条件下, 光电压及光电流分别为0.434V和0.158mA/cm²; 在320nm处的IPCE达19.8%, 具有较优良的光电转化性能. 根据测得的MWCNT-Pc的能带结构, 推知MWCNT-Pc的光诱导电子转移过程是Pc端基发生光激发电子跃迁, 此后电子转移到MWCNTs上并进一步传递到ITO, 完成电荷分离.

关键词: 多壁碳纳米管, 酞菁铜, 光电性能

Abstract: Multi-walled carbon nanotubes (MWCNTs) were grafted with sulfonyl chloride groups using chlorosulfonic acid as a sulfonation reagent, and then the amino-modified multi-walled carbon nanotubes of MWCNT-NH₂ was prepared via the aminolysis reaction. The MWCNT-NH₂ was further reacted with copper phthalocyanine sulfonyl chloride to prepared the complex of MWCNT-Pc. The products were fully characterized by various standard analytical techniques, including scanning electron microscope, transmission electron microscope, infrared spectroscope, UV-Vis absorption spectroscope, Raman spectroscope, X-ray photoelectron spectroscope, thermogravimetric analysis, and cyclic voltammetry. The results indicated that the complex of MWCNT-Pc was fabricated through covalent assembly of MWCNT-NH₂ with copper phthalocyanine, with a copper phthalocyanine molecule for every 38 MWCNT carbons.The thermal stability of the complex of MWCNT-Pc was lower than that of MWCNT-NH₂.The photoelectrode of ITO/MWCNT-Pc fabricated by the method of the spray showed a better photoelectric performance with the photovoltage and the photocurrent were 0.434V and 0.158mA/cm² respectively, and the internal photoconversion efficiency at 320nm was up to 19.8%. Based on the band structure of the complex of MWCNT-Pc, the photoinduced electron transfer process was proposed as follow: firstly the electronic transitions occured in the Pc moiety of MWCNT-Pc, following electrons transferred to MWCNTs and then further passed to the ITO to achieve the charge separation.

Key words: multi-walled carbon nanotubes, copper phthalocyanine, photoelectric property

中图分类号:

O614

吴振奕, 杨绳岩. 多壁碳纳米管-酞菁铜复合物的合成表征及光电性能[J]. 无机材料学报, 2011, 26(8): 785-791.

WU Zhen-Yi, YANG Sheng-Yan. Synthesis, Characterization and Photoelectric Properties of the Copper Phthalocyanine-modied Multi-walled Carbon Nanotubes[J]. Journal of Inorganic Materials, 2011, 26(8): 785-791.

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多壁碳纳米管-酞菁铜复合物的合成表征及光电性能

Synthesis, Characterization and Photoelectric Properties of the Copper Phthalocyanine-modied Multi-walled Carbon Nanotubes

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