Carboxymethyl cellulose structured nano-adsorbent for removal of methyl violet from aqueous solution: isotherm and kinetic analyses

Gaurav Sharma*, Amit Kumar, Shweta Sharma, Mu Naushad, Ayman A. Ghfar, Ala’a H. Al-Muhtaseb, Tansir Ahamad, Nitin Sharma, Florian J. Stadler

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

Abstract: In the present study, we have synthesized a nano-adsorbent of carboxymethyl cellulose; carboxymethyl cellulose/graphitic-carbon nitride/zinc oxide (CMC/g-C3N4/ZnO) by sol–gel technique. It has been utilized for the adsorptional elimination of methyl violet (MV) from aqueous solution. Maximum surface area as determined from the BET analyses is 9.214 m2/g. XRD analysis confirmed the semi-crystalline nature of the nano-adsorbent. Presence of desired functionalities on the surface of nano-adsorbent, CMC/g-C3N4/ZnO offered maximum interactions with the MV molecules. Isotherm studies generalized the monolayer adsorption of MV molecules with maximum adsorption capacity of 96.43 mg/g. Solution pH affected the adsorption rate to large extent and maximum occurred at pH 8. Pseudo-second order model better explained the adsorption process that determines the chemical interactions between methyl violet and CMC/g-C3N4/ZnO. Graphic abstract: [Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)3677-3691
Number of pages15
JournalCellulose
Volume27
Issue number7
DOIs
Publication statusPublished - May 1 2020
Externally publishedYes

Keywords

  • Adsorption
  • Carboxymethyl cellulose
  • Isotherms
  • Kinetics
  • Methyl violet
  • Nano-adsorbent

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this