Scholarlink

<p>In this study, a polyaniline-titanium carbide (PANI-TiC) hybrid was synthesized via in situ polymerization to investigate its potential for Congo Red (CR) adsorption. The hybrid was characterized using FTIR, XRD, TGA, TEM, EDS, and UV–vis spectroscopy. The CR adsorption behavior was studied under varying conditions, including contact time (10–100&#xa0;min), pH (2–12), initial dye concentration (30–300&#xa0;mg/L), and temperature (273–373&#xa0;K). Adsorption models, including Langmuir, Freundlich, and Temkin, were evaluated, with the Langmuir model best describing the CR adsorption on PANI-TiC, showing a high correlation coefficient (R<sup>2</sup> = 0.997). The adsorption process followed pseudo-second-order kinetics (R<sup>2</sup> = 0.998) and was endothermic, as indicated by a positive ∆H of 46.23&#xa0;kJ/mol. FTIR analysis before and after adsorption revealed interactions between PANI-TiC and CR, which were further explained by a proposed mechanism. Notably, the band gap of the PANI-TiC-CR complex shifted from 2.28 to 2.63&#xa0;eV, indicating the significant changes in the hybrid's properties upon adsorption.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Efficient removal of Congo red dye using a PANI/TiC nanocomposite: synthesis, characterization, isotherms, kinetics, and optical property

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年9月17日

查看全文
  • Amina Bekhoukh,
  • Faiza Chouli,
  • Imane Moulefera,
  • José Javier Delgado Marín,
  • Abdelghani Benyoucef

摘要

In this study, a polyaniline-titanium carbide (PANI-TiC) hybrid was synthesized via in situ polymerization to investigate its potential for Congo Red (CR) adsorption. The hybrid was characterized using FTIR, XRD, TGA, TEM, EDS, and UV–vis spectroscopy. The CR adsorption behavior was studied under varying conditions, including contact time (10–100 min), pH (2–12), initial dye concentration (30–300 mg/L), and temperature (273–373 K). Adsorption models, including Langmuir, Freundlich, and Temkin, were evaluated, with the Langmuir model best describing the CR adsorption on PANI-TiC, showing a high correlation coefficient (R2 = 0.997). The adsorption process followed pseudo-second-order kinetics (R2 = 0.998) and was endothermic, as indicated by a positive ∆H of 46.23 kJ/mol. FTIR analysis before and after adsorption revealed interactions between PANI-TiC and CR, which were further explained by a proposed mechanism. Notably, the band gap of the PANI-TiC-CR complex shifted from 2.28 to 2.63 eV, indicating the significant changes in the hybrid's properties upon adsorption.