Wang Ya, Wang Hai, Wan Wei
Department of Physics, Capital Normal University, Beijing Key Laboratory of Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, and Beijing Advanced Innovation Center for Imaging Technology, Beijing, 100048, P. R. China.
J Nanosci Nanotechnol. 2019 Jun 1;19(6):3621-3626. doi: 10.1166/jnn.2019.16126.
The incorporation of carbon element into nanoporous anodic aluminum oxides from oxalic acid electrolyte was studied. The carbon element content in nanoporous anodic alumina by pulse anodization reaches up to ∼20 at.%, while it remains ∼7 at.% under constant anodization. It was proposed that the ionic dynamics in nanopores governs the carbon-containing anions incorporation into nanoporous anodic oxides. For the same 20 V resting voltage, the content of carbon element remains unchanged in a broad range of working voltages: 40-150 V. X-ray photoelectron analysis further revealed that the and C-O/C═O ratios increased significantly as the working voltage increased. The color exhibited by the nanoporous anodic alumina was related to the chemical states of the carbon present in the alumina, and not the carbon content.
研究了草酸电解液中碳元素在纳米多孔阳极氧化铝中的掺入情况。通过脉冲阳极氧化法制备的纳米多孔阳极氧化铝中的碳元素含量高达约20原子百分比，而在恒流阳极氧化条件下其含量约为7原子百分比。有人提出，纳米孔中的离子动力学控制着含碳阴离子掺入纳米多孔阳极氧化物的过程。对于相同的20 V静置电压，在40 - 150 V的宽工作电压范围内，碳元素含量保持不变。X射线光电子能谱分析进一步表明，随着工作电压的增加， 和C - O/C═O比值显著增加。纳米多孔阳极氧化铝呈现的颜色与氧化铝中碳的化学状态有关，而非碳含量。
