Highly efficient and selective pillararene-based organic materials for Hg2+ and CH3Hg+ extraction from aqueous solution

Chen, Lixi; Wang, Ying; Wan, Yaoshuang; Cai, Yimin; Xiong, Yanqi; Fan, Zhichao; Conradson, Steven D.; Fu, Haiying; Yuan, Lihua; Feng, Wen

doi:10.1016/j.cej.2020.124087

Cited by 25 publications

(7 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…353,354 Actually, these methods can be divided into in situ remediation including immobilization, 355,356 burying, 357 phytoremediation, 358 and amendment 359,360 and ex situ remediation including washing, 33,361 electrochemical remediation, 362 ultrafiltration, 363 and solvent extraction. 364 In situ bioremediation causes less dust dispersion and hence better degradation of the contaminant. It can be enhanced via bioaugmentation (i.e., by the introduction of more archaea or bacterial cultures to enhance the contaminant degradation), bioventing (i.e., by stimulating the natural in situ biodegradation of contaminants by providing enough air or oxygen to existing microorganisms to sustain the microbial activity), or biosparging (i.e., an in situ remediation technology that uses indigenous microorganisms to biodegrade organic constituents in the saturated zone; in biosparging, air (or oxygen) and nutrients (if needed) are directly injected into the saturated zone to increase the biological activity of the indigenous microorganisms).…”

Section: Biocatalytic Remediation Of Watermentioning

confidence: 99%

Recent Progress and Prospects in Catalytic Water Treatment

et al. 2021

View full text Add to dashboard Cite

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

Section: Biocatalytic Remediation Of Watermentioning

confidence: 99%

Recent Progress and Prospects in Catalytic Water Treatment

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Some design intentions are listed as follows. (1) Water-soluble carboxylatopillar[5]arene possessed five carboxylate groups on each rim and good binding ability toward guest molecules [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ], which was selected as a supramolecular host. It may also have cation⋯π and electrostatic interactions with Hg 2+ .…”

Section: Introductionmentioning

confidence: 99%

Green, Efficient Detection and Removal of Hg2+ by Water-Soluble Fluorescent Pillar[5]arene Supramolecular Self-Assembly

et al. 2022

View full text Add to dashboard Cite

Developing a water-soluble supramolecular system for the detection and removal of Hg2+ is extremely needed but remains challenging. Herein, we reported the facile construction of a fluorescent supramolecular system (H⊃G) in 100% water through the self-assembly of carboxylatopillar[5]arene sodium salts (H) and diketopyrrolopyrrole-bridged bis(quaternary ammonium) guest (G) by host–guest interaction. With the addition of Hg2+, the fluorescence of H⊃G could be efficiently quenched. Since Hg2+ showed synergistic interactions (coordination and Hg2+- cavity interactions with G and H, respectively), crosslinked networks of H⊃G@Hg2+ were formed. A sensitive response to Hg2+ with excellent selectivity and a low limit of detection (LOD) of 7.17 × 10−7 M was obtained. Significantly, the quenching fluorescence of H⊃G@Hg2+ can be recovered after a simple treatment with Na2S. The reusability of H⊃G for the detection of Hg2+ ions was retained for four cycles, indicating the H⊃G could be efficiently used in a reversible manner. In addition, the H⊃G could efficiently detect Hg2+ concentration in real samples (tap water and lake water). The developed supramolecular system in 100% water provides great potential in the treatment of Hg2+ detection and removal for environmental sustainability.

show abstract

“…Traditional Hg 2+ removal technologies include chemical precipitation, 3 electrochemical processes, 4 adsorption, 5 membrane separation, 6 ion exchange 7 and solvent extraction. 8 Among these technologies, adsorption has the advantages of simple operation and low cost. Owing to the large number of sulfur (S) atoms exposed on the surface and the strong soft-soft interaction between Hg 2+ and S, molybdenum disulfide (MoS 2 ), a typical layered transition-metal dichalcogenide (TMDC) 9 composed of a hexagonal plane with Mo atoms sandwiched by two sulfur atoms (S–Mo–S), can be used as a promising adsorbent for the removal of Hg 2+ .…”

Section: Introductionmentioning

confidence: 99%