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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Confined conversion of CuS nanowires to CuO nanotubes by annealing-induced diffusion in nanochannels | Mu and He Nanoscale Research Letters 2011 6 150 http www.nanoscalereslett.eom content 6 1 150 o Nanoscale Research Letters a SpringerOpen Journal NANO EXPRESS Open Access Confined conversion of CuS nanowires to CuO nanotubes by annealing-induced diffusion in nanochannels Cheng Mu Junhui He Abstract Copper oxide CuO nanotubes were successfully converted from CuS nanowires embedded in anodic aluminum oxide AAO template by annealing-induced diffusion in a confined tube-type space. The spreading of CuO and formation of CuO layer on the nanochannel surface of AAO and the confinement offered by AAO nanochannels play a key role in the formation of CuO nanotubes. Introduction Well-aligned semiconductor one-dimensional 1D nanostructures have attracted extensive attention in the last decade owing to their great potential in novel optoelectronic nanodevices such as laser diodes field effect transistors light-emitting diodes and sensors 1 . Copper oxide CuO is a Ji-type semiconductor with a narrow band gap and is a candidate material for photothermal and photoconductive applications 2 3 . Moreover it is potentially a useful component in the fabrication of sensors field emitters lithium-CuO electrochemical cells cathode materials and high Tc-super-conductors 4 5 . Its crystallinity size and shape and stoichiometry play a key role in these applications. Considerable e fforts have been devoted to overcoming numerous challenges associated with efficient controlled fabrication of these nanostructures via chemical or physical approaches. Thus far well-aligned 1 D CuO nanostructures have been obtained using techniques such as thermal evaporation 2 6 electrospinning 7 MOCVD 8 and sol-gel process 9 . CuO nanowires were also prepared by conversion from their nanoscale analogs of copper hydroxide at elevated temperatures 10-14 . In this study a novel approach for the preparation of CuO nanotubes via confined conversion from CuS nanowires Correspondence jhhe@mail.ipc.ac.cn Functional .
