Facile fabrication of thiol-modified cellulose sponges for adsorption of Hg2+ from aqueous solutions

Rong, Liduo; Zhu, Zhaolin; Wang, Bijia; Mao, Zhiping; Xu, Hong; Zhang, Linping; Zhong, Yi; Sui, Xiaofeng

doi:10.1007/s10570-018-1758-7

Cited by 46 publications

(26 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FTIR spectra of the aerogel samples are compared in Figures 2a and Figure S1. The peaks at 3350, 1100, and 1030 cm −1 correspond to the stretching of −OH, anhydroglucose ring, and C−O, respectively, in the CNF aerogel, 13 and the peaks at 3319, 1710, 1730, and 1540 cm −1 are the −NH stretching, CO stretching, and −NH bending (−NHCOO−) from PU. 36 These peaks were still present in the CNF/PU hybrid aerogels, which also showed no new peaks.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…7,9−12 At present, the strategy of chemical crosslinking mainly focused on covalent bonding involving the active hydroxyl groups on nanocellulose. Known chemical cross-linking reagents employed include silane coupling agents, 13,14 carboxylic acids, 15 hexamethylene diisocyanate, 16 and aldehydes. 17,18 For example, Lin et al reported CNC/ CNF hybrid aerogels prepared using a dual-enhancement method taking advantage of both electrostatic attraction and chemical cross-linking.…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Facile Fabrication of Robust and Stretchable Cellulose Nanofibers/Polyurethane Hybrid Aerogels

Wang

Cheng

et al. 2020

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

Nanocellulose-based aerogels of low density and high porosity have attracted considerable attention. However, the weak mechanical property restricted their practical applications. Herein, flexible, robust, and stretchable cellulose nanofibers/ polyurethane (CNF/PU) hybrid aerogels were prepared by incorporating PU into chemically cross-linked CNF aerogels using the wet coagulating method. The resultant CNF/PU hybrid aerogels were lightweight (<0.12 g/cm 3 ) and highly porous (>89.72%), yet had greatly enhanced mechanical properties showing compressive stress of 510 KPa at 80% strain and tensile strength of 247 KPa. The hybrid aerogels were also shown to be capable of bearing tensile weights of over 11 000 times their own weight (the stress is about 251 KPa) without getting fractured. The hybrid aerogels could quickly restore to their original shapes from being bent and twisted, showing great flexibility. Furthermore, the combination of organic phase change materials (PCMs) and aerogels resulted in shape-stabilized PCMs prevent the leakage without compromising the energy utilization efficiency. The CNF/PU hybrid aerogels were shown to be an excellent supporting material for stabilizing liquid PCMs such as octadecane. CNF/PU/octadecane composites exhibited latent heat of up to 223.3 J/g and good shape and thermal stability. Moreover, these composites demonstrated shape memory properties, in which they could be fixed in various shapes at 20 °C or below, and quickly recover to the original shape above the melting point of octadecane.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Facile Fabrication of Robust and Stretchable Cellulose Nanofibers/Polyurethane Hybrid Aerogels

Wang

Cheng

et al. 2020

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The other advantages include ease to surface modication, low density, high aspect ratio and impressive mechanical properties among others. [18][19][20][21] Green and facile synthesis of highly adsorbent, exible and multifunctional silica is an excellent approach towards tackling various world problems. More especially heavy metal removal from the environment which metals are seen as a growing health problem worldwide.…”

Section: Introductionmentioning

confidence: 99%

“…The other advantages include ease to surface modification, low density, high aspect ratio and impressive mechanical properties among others. 18–21 …”

Section: Introductionmentioning

confidence: 99%

Precipitated silica agglomerates reinforced with cellulose nanofibrils as adsorbents for heavy metals

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…It was reported that thiol groups had highly selective adsorption of Hg 2+ from wastewater(Yantasee et al 2007). Geng et al(2017) oxidized bamboo-derived cellulose with TEMPO to obtain TO-NFC, and then subjected to facile freeze-drying in MPTs(3-mercaptopropyltrimethoxysilane) sols to obtain exible aerogel(TO-NFC-Si-SH) Rong et al (2018). used TEMPO to oxidize wood pulp to obtain CNF, and 3mercaptopropyltrimethoxysilane (MPTMS) (MPTMS: CNF = 1/2) was added to the CNF suspension at room temperature to obtain CNF-1MPTMS and CNF-2MPTMA, then quickly frozen in liquid nitrogen and vacuum dried for 24 hours to obtain CNF-MPTMS sponge.…”

mentioning

confidence: 99%

Nanocelllulose Based Adsorbents for Heavy Metal Ions Removal

Wang

Chen

et al. 2021

Preprint

View full text Add to dashboard Cite

Heavy metal ion pollutions are of serious threat for our human health, and advanced technologies on removal of heavy metal ions in water or soil are in the focus of intensive research worldwide. Nanocellulose based adsorbents are emerging as an environmentally friendly appealing materials platform for heavy metal ions removal as nanocellulose has higher specific surface area, excellent mechanical properties and good biocompatibility. In this review, we briefly compare the differences of three kinds of nanocellulose and their preparation method. Then we cover the most recent work on nanocellulose based adsorbents for heavy metal ions removal, and present an in-depth discussion of the modification technologies for nanocellulose in assembling high performance heavy ions adsorbent process. By introducing functional groups, such as amino, carboxyl, phenolic hydroxyl, and thiol, the nanocellulose based adsorbents not only remove single heavy metal ions through ion exchange, chelation/complexation/coordination, electrostatic attraction, hydrophobic actions, binding affinity and redox reactions, but also can selectively adsorb multiple heavy ions in water. Finally, some challenges of nanocellulose based adsorbents for heavy metal ions are also prospected. We anticipate that the review supplies some guides for nanocellulose based adsorbents applied in heavy metal ions removal field.

show abstract

Facile fabrication of thiol-modified cellulose sponges for adsorption of Hg2+ from aqueous solutions

Cited by 46 publications

References 48 publications

Facile Fabrication of Robust and Stretchable Cellulose Nanofibers/Polyurethane Hybrid Aerogels

Facile Fabrication of Robust and Stretchable Cellulose Nanofibers/Polyurethane Hybrid Aerogels

Precipitated silica agglomerates reinforced with cellulose nanofibrils as adsorbents for heavy metals

Nanocelllulose Based Adsorbents for Heavy Metal Ions Removal

Contact Info

Product

Resources

About