AN EPR STUDY OF NANO-CONDENSED CARBON AND NANO-DIAMOND SYNTHESIZED BY EXPLOSIVE DETONATION

Chinese Journal of Magnetic Resonance ›› 2004, Vol. 21 ›› Issue (4): 427-434.

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AN EPR STUDY OF NANO-CONDENSED CARBON AND NANO-DIAMOND SYNTHESIZED BY EXPLOSIVE DETONATION

WANG Zhi-Cheng¹, JIANG Xiao-Hong¹, SHI Xiao-Qin¹, YANG Xu-Jie¹, Struk V.A.², LIU Lu-De^1*

1.Materials Chemistry Laboratory, Nanjing University of Science & Technology，Nanjing 210094，China;
2.Research Institute of Materials and Resource Saving Technologies, Grodno State University, Grodno 230023, Belarus

Received:2004-03-09 Revised:2004-04-29 Published:2004-12-05 Online:2004-12-05
Supported by:
高等学校博士学科点专项科研基金（20030288020）; 江苏省自然科学基金（BK2003096）; 中国博士后科学基金（2003033493）资助项目.

Abstract

Abstract:

A large number of structure defects and surface functional groups were found to exist in nanocondensed carbon (NCC) and nanodiamond (ND) synthesized by explosive detonation. Results from electron paramagnetic resonance (EPR) showed that there were a lot of free radicals in both NCC and ND. It was also shown that there are great differences in the EPR characteristics between NCC and ND, including the figure, the peak area of the EPR curve, the g- factor, the peak-to-peak line-width ΔH_pp, and so on. In addition, the influences of various factors, such as preparation method, condition of chemical treatment, size of the particles, surface modification and impurity admixture, on the density of free radicals were also discussed.

Key words: EPR, explosive detonation, nano-condensed carbon, nano-diamond, free radical

CLC Number:

O482.53

WANG Zhi-Cheng, JIANG Xiao-Hong, SHI Xiao-Qin, YANG Xu-Jie, Struk V.A., LIU Lu-De. AN EPR STUDY OF NANO-CONDENSED CARBON AND NANO-DIAMOND SYNTHESIZED BY EXPLOSIVE DETONATION[J]. Chinese Journal of Magnetic Resonance, 2004, 21(4): 427-434.

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AN EPR STUDY OF NANO-CONDENSED CARBON AND NANO-DIAMOND SYNTHESIZED BY EXPLOSIVE DETONATION

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