超声化学法制备聚苯胺@TiO 和聚苯胺@SiO 用于去除阴离子和阳离子染料。
Sonochemical preparation of polyaniline@TiO and polyaniline@SiO for the removal of anionic and cationic dyes.
机构信息
Bar-Ilan Institute for Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel.
Department of Industrial Chemistry, Alagappa University, Karaikudi 630 003, Tamilnadu, India.
出版信息
Ultrason Sonochem. 2020 Apr;62:104864. doi: 10.1016/j.ultsonch.2019.104864. Epub 2019 Nov 5.
Polyaniline (PANI) synthesized by simple CDs (carbon dots) initiated polymerization has formed a composite with TiO and SiO, respectively via a sonochemical method. These PANI@TiO and PANI@SiO composites were proven as effective adsorbent materials to rapidly adsorb the anionic and cationic dyes from wastewater at neutral pH and ambient temperature. Selected popular cationic and anionic organic dyes consisted of methylene blue (MB), brilliant blue (BB), Evans blue (EB), crystal violet (CV), Congo red (CR), rhodamine B (RB), and rhodamine 6G (R6G). The adsorption equilibria were governed by Langmuir and Freundlich isotherms. The kinetic results revealed that the PANI@TiO and PANI@SiO composite materials synthesized via the sonochemical method are efficient adsorbents compared to other adsorbent materials for the removal of organic dyes from the water. The adsorbed dyes were effectively desorbed from the composites, rendering the reusability of PANI@TiO and PANI@SiO. The estimated adsorption capacities of PANI@TiO and PANI@SiO composites were 89, 93, 80, 94 and 74, 71, 61, 61 mg/g for MB, CR, CV, and R6G, respectively.
通过简单的 CDs（碳点）引发聚合合成的聚苯胺（PANI）分别通过超声化学方法与 TiO 和 SiO 形成了复合材料。这些 PANI@TiO 和 PANI@SiO 复合材料已被证明是有效的吸附剂材料，可在中性 pH 和环境温度下从废水中快速吸附阴离子和阳离子染料。选择了一些流行的阳离子和阴离子有机染料，包括亚甲蓝（MB）、亮蓝（BB）、依文思蓝（EB）、结晶紫（CV）、刚果红（CR）、罗丹明 B（RB）和罗丹明 6G（R6G）。吸附平衡受 Langmuir 和 Freundlich 等温线控制。动力学结果表明，与其他吸附剂材料相比，通过超声化学方法合成的 PANI@TiO 和 PANI@SiO 复合材料是去除水中有机染料的有效吸附剂。吸附的染料可有效地从复合材料中解吸，从而使 PANI@TiO 和 PANI@SiO 具有可重复使用性。PANI@TiO 和 PANI@SiO 复合材料对 MB、CR、CV 和 R6G 的估计吸附容量分别为 89、93、80、94 和 74、71、61、61 mg/g。
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