Zhu Liyan, Ma Hongchao, Han Huibin, Fu Yinghuan, Ma Chun, Yu Zhihui, Dong Xiaoli
School of Light Industry & Chemical Engineering, Dalian Polytechnic University No. 1 Qinggongyuan, Ganjingzi District Dalian P. R. China
RSC Adv. 2018 May 23;8(34):18992-19000. doi: 10.1039/c8ra02983k. eCollection 2018 May 22.
Herein, black TiO nanotube arrays (NTAs) were fabricated using electrochemical self-doping approaches, and characterized systemically by scanning electron microscopy (SEM), powder X-ray diffraction (XRD), UV-visible absorption spectroscopy and photoluminescence spectroscopy (PL). The as-obtained black TiO nanotube arrays (NTAs) exhibited stronger absorption in the visible-light region, a better separation rate of light-induced carriers, and higher electrical conductivity than TiO nanotube arrays (NTAs). These characteristics cause black TiO nanotube array (NTA) electrodes to have higher photoelectrocatalytic activity for degrading anthraquinone dye (reactive brilliant blue KN-R) than the TiO nanotube array (NTA) electrode. Furthermore, a synergetic action between photocatalysis and electrocatalysis was also observed. The black TiO nanotube array (NTA) electrode is considered to be a promising photoanode for the treatment of organic pollutants.
在此，采用电化学自掺杂方法制备了黑色TiO纳米管阵列（NTAs），并通过扫描电子显微镜（SEM）、粉末X射线衍射（XRD）、紫外可见吸收光谱和光致发光光谱（PL）对其进行了系统表征。所制备的黑色TiO纳米管阵列（NTAs）在可见光区域表现出更强的吸收能力、更好的光生载流子分离率以及比TiO纳米管阵列（NTAs）更高的电导率。这些特性使得黑色TiO纳米管阵列（NTA）电极在降解蒽醌染料（活性艳蓝KN-R）方面比TiO纳米管阵列（NTA）电极具有更高的光电催化活性。此外，还观察到了光催化和电催化之间的协同作用。黑色TiO纳米管阵列（NTA）电极被认为是一种用于处理有机污染物的有前景的光阳极。
