Adsorptive capacity of PANI/Bi2O3 composite through isotherm and kinetics studies on alizarin red
- Title
- Adsorptive capacity of PANI/Bi2O3 composite through isotherm and kinetics studies on alizarin red
- Creator
- Joseph G.; Kalathiparambil Rajendra Pai S.D.; Varghese A.; Pinheiro D.; Mohan M.K.; Chundattu S.J.
- Description
- Adsorption offers numerous advantages for eliminating organic pollutants such as dyes, making it a valuable method for water treatment. Polyaniline/Bi2O3 (PANI/Bi2O3) nanocomposite is synthesized from aniline by the chemical oxidative polymerization method. The sample shows a high positive surface charge density as seen from zeta potential analysis. X-ray Diffraction analysis, FTIR analysis, UVvis spectroscopy technique, thermogravimetric analysis, BET N2 Adsorption-desorption analysis, DLS, and zeta potential analysis are the tools employed to characterize the PANI/Bi2O3 nanocomposite. The impact of PANI/Bi2O3 on the outcome of adsorption is confirmed by comparing the composite with pristine Bi2O3 and PANI. The effect of various factors like time, temperature, initial dye concentration, and varying pH on the adsorption efficiency is studied. A maximum adsorption efficiency of 95 % is observed when 100 mg of PANI/Bi2O3 nanocomposite is utilized for a duration of 100 min. The adsorption efficiency increases at higher temperatures, and a maximum adsorption efficiency is observed at a pH of 11.4. The adsorption isotherms proposed by Freundlich and Langmuir are examined to confirm the adsorption mechanism, which entails the creation of a single layer of dye molecules on the adsorbent's surface. Analysis of kinetic parameters indicates that the reaction follows pseudo-second-order adsorption kinetics. The composite produced demonstrates effectiveness as an adsorbent for removing harmful organic pollutants from water sources. 2024 Elsevier B.V.
- Source
- Journal of Molecular Structure, Vol-1308
- Date
- 2024-01-01
- Publisher
- Elsevier B.V.
- Subject
- Adsorption; Adsorption isotherm; Adsorption kinetics; Alizarin red; PANI/Bi2O3
- Coverage
- Joseph G., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India; Kalathiparambil Rajendra Pai S.D., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India; Varghese A., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India; Pinheiro D., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560029, India; Mohan M.K., Department of Sciences and Humanities, School of Engineering and Technology, CHRIST (Deemed to be University), Mysore Road, Kumbalagodu, Bangalore, 560074, India; Chundattu S.J., Department of Sciences and Humanities, School of Engineering and Technology, CHRIST (Deemed to be University), Mysore Road, Kumbalagodu, Bangalore, 560074, India
- Rights
- Restricted Access
- Relation
- ISSN: 222860; CODEN: JMOSB
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Joseph G.; Kalathiparambil Rajendra Pai S.D.; Varghese A.; Pinheiro D.; Mohan M.K.; Chundattu S.J., “Adsorptive capacity of PANI/Bi2O3 composite through isotherm and kinetics studies on alizarin red,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/12956.