Utilization of Ag2O-Al2O3-ZrO2 decorated onto rGO as adsorbent for the removal of Congo red from aqueous solution

Gaurav Sharma; Tahani Saad AlGarni; P Senthil Kumar; Sangeeta Bhogal; Amit Kumar; Shweta Sharma; Mu Naushad; Zeid A ALOthman; Florian J Stadler

doi:10.1016/j.envres.2021.111179

Utilization of Ag₂O-Al₂O₃-ZrO₂ decorated onto rGO as adsorbent for the removal of Congo red from aqueous solution

Environ Res. 2021 Jun:197:111179. doi: 10.1016/j.envres.2021.111179. Epub 2021 Apr 15.

Authors

Gaurav Sharma¹, Tahani Saad AlGarni², P Senthil Kumar³, Sangeeta Bhogal⁴, Amit Kumar⁵, Shweta Sharma⁴, Mu Naushad⁶, Zeid A ALOthman², Florian J Stadler⁷

Affiliations

¹ College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab. for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen, 518055, PR China; Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia; International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, 173212, Himachal Pradesh, India. Electronic address: g.sharma@ksu.edu.sa.
² Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
³ Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, India.
⁴ School of Chemistry, Shoolini University, Solan, 173212, Himachal Pradesh, India.
⁵ College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab. for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen, 518055, PR China; International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan, 173212, Himachal Pradesh, India.
⁶ Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia; Yonsei Frontier Lab, Yonsei University, Seoul, South Korea.
⁷ College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab. for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen, 518055, PR China.

PMID: 33865823
DOI: 10.1016/j.envres.2021.111179

Abstract

The water resources contamination in an alarming concern for sustainable environment. This has led to development of new technologies and materials for waste water detoxification. In the present study, we have fabricated novel trimetallic based mixed oxides decorated reduced graphene oxide (rGO) composite using facile microwave method and utilized it as an adsorbent for the removal of congo red dye from aqueous solution. The final composite showed highly agglomerated metal oxides present on the rGO surface. The high surface area and activity of the synthesized adsorbent resulted in its high adsorption capacity of 333.32 mg/g for congo red. The Langmuir model better explained the isotherm data indicating the monolayer adsorption of congo red molecules onto Ag₂O-Al₂O₃-ZrO₂/rGO surface. The grander adsorption ability of Ag₂O-Al₂O₃-ZrO₂/rGO towards organic dye indicate its probable utilization in the removal of other dyes also from wastewater.

Keywords: Adsorption; Langmuir; Trimetallic oxides; Water purification; rGO.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adsorption
Congo Red*
Graphite
Kinetics
Silver
Water Pollutants, Chemical*

Substances

Water Pollutants, Chemical
graphene oxide
Silver
Congo Red
Graphite