B/N-doped carbon sheets from a new ionic liquid with excellent sorption properties for methylene blue

Mehler J, Ermer M, Paap U, Heller B, Maier F, Steinrück HP, Hartmann M, Korte C, Schulz P, Wasserscheid P (2021)

Publication Language: English

Publication Type: Journal article

Publication year: 2021

Journal

Journal of Ionic Liquids Elsevier

Book Volume: 1

Article Number: 100004

Journal Issue: 1

DOI: 10.1016/j.jil.2021.100004

Abstract

The pyrolytic treatment of the novel ionic liquid 1-ethyl-3-methyl-imidazolium tetrakis-(1-imidazolyl)borate ([EMIM][BIm4]) allowed the preparation of B/N-doped carbonaceous materials with an exceptional performance in the adsorptive removal of the cationic dye methylene blue (MB) from wastewater. [EMIM][BIm4] was prepared via an easy and scalable synthesis protocol in very good yield. The carbon materials obtained after salt templated pyrolysis of the IL displayed high degrees of heteroatom doping (up to 22 wt% N, 3 wt% B) and high surface areas of up to 1860 m2 g−1. The materials were tested for their performance in the adsorptive removal of MB from contaminated water. Adsorption equilibrium experiments revealed an adsorption capacity exceeding 500 mg g−1, which is, to the best of our knowledge, the highest value reported so far. Time-resolved adsorption experiments showed that the materials not only exhibit high capacity but also very fast adsorption kinetics. Complete decolorization of MB solutions in only 5 min at high MB concentrations of 100 mg L−1 was observed. These results demonstrate that [EMIM][BIm4] is an excellent precursor for the preparation of IL-derived B/N-doped carbon sorbents.

Authors with CRIS profile

Julian Mehler Lehrstuhl für Chemische Reaktionstechnik (CRT) Matthias Ermer Interdisziplinäres Zentrum Erlangen Catalysis Resource Center (ECRC) Ulrike Paap Lehrstuhl für Physikalische Chemie II Bettina Heller Lehrstuhl für Physikalische Chemie II Florian Maier Lehrstuhl für Physikalische Chemie II Hans-Peter Steinrück Lehrstuhl für Physikalische Chemie II Martin Hartmann Professur für Katalyse Peter Schulz Lehrstuhl für Chemische Reaktionstechnik (CRT) Peter Wasserscheid Lehrstuhl für Chemische Reaktionstechnik (CRT)

Involved external institutions

Forschungszentrum Jülich / Research Centre Jülich (FZJ) DE Germany (DE)

How to cite

APA:

Mehler, J., Ermer, M., Paap, U., Heller, B., Maier, F., Steinrück, H.-P.,... Wasserscheid, P. (2021). B/N-doped carbon sheets from a new ionic liquid with excellent sorption properties for methylene blue. Journal of Ionic Liquids, 1(1). https://doi.org/10.1016/j.jil.2021.100004

MLA:

Mehler, Julian, et al. "B/N-doped carbon sheets from a new ionic liquid with excellent sorption properties for methylene blue." Journal of Ionic Liquids 1.1 (2021).

BibTeX: Download