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Citation: Yin Hao-Yong, Xu Zhu-De, Zheng Yi-Fan, Wang Qing-Sheng, Chen Wei-Xiang. In situ Growth of CdSe Quantum Dots on MWCNTs with Thioglycollic Acid as the Stabilizer[J]. Acta Physico-Chimica Sinica, ;2004, 20(11): 1308-1312. doi: 10.3866/PKU.WHXB20041105 shu

In situ Growth of CdSe Quantum Dots on MWCNTs with Thioglycollic Acid as the Stabilizer

1.
Department of Chemistry, Zhejiang University, Hangzhou　310027

Received Date: 19 April 2004
Available Online: 15 November 2004

The CdSe-quantum dots were grown in situ on the multiwalled carbon nanotubes (MWCNTs) using thioglycollic acid as the stabilizer in mild reaction conditions (in aqueous solution and at 90 ℃).The as prepared CdSe-MWCNTs quantum dots heterojunctions (CdSe-MWCNTs) were characterized by TEM, HRTEM, EDS, XRD and XPS measurements. The EDS and XPS analysis shows that the quantum dots are mainly composed of Se and Cd elements and their binding energies correspond to that of semiconductor CdSe. The XRD measurement suggests that the CdSe quantum dots have the cubic phase. The HRTEM results reveal that the diameter of CdSe quantum dots is about 4 nm. It is also found that the thioglycollic acid can prohibit the conglomeration of the individual nanocrystals. The distinct optical properties were visualized by the photoluminescent measurements.
- MWCNTs;　CdSe;　Quantum dots
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