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Carbon doping of self-organized nanotube layers by thermal acetylene treatment

机译:通过热乙炔处理对自组织纳米管层进行碳掺杂

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摘要

Self-organized layers of TiO_2 nanotubes were formed by electrochemical anodization of Ti in a HF/Na_2HPO_4 electrolyte. The tubes were treated at 500 deg C under a mixed flux of N_2 and acetylene (C_2H_2). The samples were characterized using SEM, XRD and photoelectrochemical measurements. The results show that the acetylene treated tube layers exhibit a significant photoresponse over the whole range of visible light up to the near-IR region (1.5 eV). This carbon doping treatment at comparable mild conditions does not lead to any structural damage to the morphology of the nanotubes.
机译:通过在HF / Na_2HPO_4电解质中对钛进行电化学阳极氧化,形成了自组织的TiO_2纳米管层。在N_2和乙炔(C_2H_2)的混合流量下,将管在500℃下进行处理。使用SEM,XRD和光电化学测量对样品进行表征。结果表明,经乙炔处理的管层在直至近红外区域(1.5 eV)的整个可见光范围内均显示出显着的光响应。在相当温和的条件下进行这种碳掺杂处理不会对纳米管的形态造成任何结构破坏。

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