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(Color online) Construction of finite cluster models of bamboolike nanotube structure taking as an example. (a) Side view of the bamboolike nanotube, in which (b) is the sheet from the unfolded nanotube wall and (c) is the magnified image of the connection portion between the nanotube wall and the common wall for the two tubes. (d) Top view of the bamboolike nanotube and (e) is the corecenelike carbon nitride segment as the common wall for the two tubes.
(a) XPS spectra, (b) FTIR spectrum, and (c) Raman spectrum of the as-prepared bamboolike carbon nitride nanotubes. The insets in (a) were the corresponding HRXPS for and region.
[(a)–(c)] TEM image of bamboolike carbon nitride nanotubes presenting the repetition of an elementary unit looking like a bamboo with the hollow capacity.
(Color online) (a) voltage vs discharge capacity curves for the BCNNs/Li cell between 2.0 and at the current density of for the 1st, 2nd, and 15th cycles, respectively. The inset in (a) is the corresponding cyclic performance for the BCNNs/Li cell. (b) First charge/discharge curves of BCNNs electrodes at the current densities of (a) and (b).
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