State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, China.
State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, China.
Chemosphere. 2020 Aug;252:126468. doi: 10.1016/j.chemosphere.2020.126468. Epub 2020 Mar 11.
An ordered g-CN- and polyaniline-modified titanium oxide nanotube array (g-CN- and PANI-co-modified TiO NTAs) was successfully synthesized and used as a photocatalyst. Polyaniline (PANI) was coated onto TiO NTAs by electrochemical polycondensation, and g-CN was deposited via the soaking adsorption method. The photocatalysts were examined by several technologies. The experiments demonstrated that the amount of g-CN and PANI, as well as the initial pH value, had significant effects on the photocatalytic efficiency. The resulting photocatalysts exhibited high visible light photocatalytic ability for tetrabromobisphenol A (TBBPA) for two reasons. First, PANI expanded the light absorption into the visible region. Second, rapid and efficient separation of photoinduced charges from the photogenerated potential difference were produced at the contact interface of g-CN and PANI-co-modified TiO NTAs. The •OH, [Formula: see text] and h were dominant components for the photocatalytic degradation of TBBPA. In addition, the g-CN and PANI-co-modified TiO NTAs have excellent long-term stability.
有序的 g-CN 和聚苯胺修饰的氧化钛纳米管阵列（g-CN 和 PANI 共修饰 TiO NTAs）被成功合成并用作光催化剂。聚苯胺（PANI）通过电化学缩聚沉积在 TiO NTAs 上，g-CN 通过浸泡吸附法沉积。通过多种技术对光催化剂进行了检查。实验表明，g-CN 和 PANI 的量以及初始 pH 值对光催化效率有显著影响。由于两个原因，所得光催化剂对四溴双酚 A（TBBPA）具有高可见光光催化能力。首先，PANI 将光吸收扩展到可见光区域。其次，在 g-CN 和 PANI 共修饰 TiO NTAs 的接触界面处产生了光生载流子从光生电位差中快速有效分离。•OH、[Formula: see text] 和 h 是 TBBPA 光催化降解的主要成分。此外，g-CN 和 PANI 共修饰的 TiO NTAs 具有优异的长期稳定性。
