Engineering the carrier dynamics of g-C3N4 by rolling up planar sheets into nanotubes via ultrasonic cavitation. Issue 47 (27th November 2018)

• Record Type: Journal Article
• Authors: Gan, Zhixing; Liu, Lizhe; Pan, Pengfei; Lin, Yawen; Shen, Jiancang; Jia, Baohua
• Is Part Of: Nanoscale. Volume 10:Issue 47(2018)
• Page Start: 22448
• Page End: 22455
• Publication Date: 2018-11-27
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c8nr06560h
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : A simple and clean ultrasonic method is developed to curve 2D g-C3 N4 sheets into 1D nanotubes. Abstract : Rolling up 2D atomic layered materials into 1D nanotubes gives rise to fascinating properties due to their lower dimension, higher anisotropy, and strain effects. In this work, the curving of 2D graphitic C3 N4 (g-C3 N4 ) sheets into 1D nanotubes is demonstrated for the first time through simple and clean ultrasonic treatments. The steady-state optical transitions are slightly enhanced while the localized trapping of excited carriers is considerably suppressed after rolling up the planar sheets into nanotubes. The mechanical method to modulate the dimension scarcely changes the chemical structures, enabling the pure investigation on shape-induced physical effects. As a proof of principle, this work confirms the dynamics of excited carriers, and the photoelectronic properties of 2D semiconductors can be significantly engineered by a simple morphological evolution.