Spider-web-inspired membrane reinforced with sulfhydryl-functionalized cellulose nanocrystals for oil/water separation

Wang, Qingxiang; Wang, Dong; Cheng, Wanli; Huang, Jia‐Qi; Cao, Meilian; Niu, Zhaoxuan; Zhao, Yueyang; Yue, Yiying; Han, Guangping

doi:10.1016/j.carbpol.2021.119049

Cited by 32 publications

(13 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To address this issue, cellulose nanocrystals (CNC) can be considered as a reinforcement phase while we note that CNC is not soluble neither in common organic solvents or water- [31]. CNC molecular chain contains abundant hydroxyl groups, which can form intramolecular or intermolecular hydrogen bond interactions, thereby enhancing the mechanical strength and structural stability of the nanofiber membranes [32]. In addition, CNC has excellent chemical resistance [33].…”

Section: Introductionmentioning

confidence: 99%

Composite membranes of polyacrylonitrile cross-linked with cellulose nanocrystals for emulsion separation and regeneration

Wang

Yang

Wang

et al. 2023

Composites Part A: Applied Science and Manufacturing

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Composite membranes of polyacrylonitrile cross-linked with cellulose nanocrystals for emulsion separation and regeneration

Wang

Yang

Wang

et al. 2023

Composites Part A: Applied Science and Manufacturing

Self Cite

View full text Add to dashboard Cite

“…[32][33][34] However, most of the reported NCs-based aerogels are hydrophilic and fragile in the water. [35][36][37] Recently, hydrophobic NCs-based porous materials are obtained by surface functionalization of NCs with low surface energy material such as alkyl long chains. [38][39][40][41] The coating surface with micro/nanohierarchical architecture has significantly improved the hydrophobic performance, [42] but hydrolysis may affect the crystallinity index of NCs, [43] further reduce their stability in the water, [44] and the complicated modification processes and expensive equipment have limited the scope of applications.…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of Superelastic, Hydrophobic, and Hierarchical Polydimethylsiloxane@nanocelluloses Aerogels for Durable Oil/Water Separation

Bao

et al. 2023

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Nanocelluloses (NCs)‐based aerogels have gradually attracted attention due to their excellent performance in oil recovery for mitigating environmental pollution caused by oil spillages. However, hydrophobicity due to polyhydroxy groups and fragile in water, as well as a complicated fabricating process, significantly restrict their practical applications. Herein, a facile route is reported to fabricate superelastic polydimethylsiloxane (PDMS)@NCs aerogels through a Pickering emulsion strategy. The hierarchical PDMS@NCs aerogels exhibit function‐dependent porous structures and integrated properties of hydrophobicity and lipophilicity, stemming from the synergistic effect of the hydrophobic skin layer and porous matrix. The resulting aerogels are capable of continuous oil/water filtration by adsorption‐extrusion with a flux up to 4300 L m−2 h−1 and a separation efficiency of 99.9%. Therefore, this provides a new route for the rational design of morphology‐tunable NCs‐based aerogels and affords a reference for its practical application in durable oil/water separation.

show abstract

“…Taking the advantages of 2 of 13 many hydroxyl groups on the surface of nanocellulose, nanochannels are formed in the membrane during the fabrication process, through which water molecules can quickly penetrate [20][21][22][23]. On the other hand, surface modification of nanocellulose has been widely reported, which promoted the development of nanocellulose-based membranes in the field of water purification, which could remove dyes, organic compounds, heavy metals and oils from wastewater [24][25][26][27][28][29][30]. Nanocellulose membranes could effectively separate oil/water nano-emulsions, which was attributed to the nanoscale pore size and super wettability of the membrane [31].…”

Section: Introductionmentioning

confidence: 99%

Phosphonium Modified Nanocellulose Membranes with High Permeate Flux and Antibacterial Property for Oily Wastewater Separation

et al. 2022

View full text Add to dashboard Cite

Nanocellulose membranes could efficiently separate oily wastewater because of their super-hydrophilic and underwater super-oleophobic property and nano-porous structure. However, the practical application and storage of nanocellulose membranes is limited by their low water permeation flux and easy corrosion by bacteria, respectively. Herein, nanocellulose membranes with high permeate flux and antibacterial property were fabricated by grafting tetrakis(hydroxymethyl) phosphonium chloride (THPC) onto the surface of TEMPO-oxidized tunicate cellulose nanofibers (TCNFs) via esterification reaction. The introduction of THPC groups with tetrahedral structure on the surface of TCNFs significantly improved the pore size and interlayer space of nanocellulose membranes, resulting in an increase in water permeation flux. These THPC@TCNF membranes were super-hydrophilic and underwater super-oleophobic, which could effectively separate various oil/water nano-emulsions. Moreover, THPC@TCNF membranes possessed excellent durability, mechanical stability and cycling performance. Due to the presence of positively charged phosphonium groups, THPC@TCNF membranes exhibited excellent antibacterial property against B. subtilis, a typical Gram-positive bacterium presenting in oily wastewater. This work provides a simple method to endow nanocellulose membrane with high permeate flux and antibacterial property.

show abstract

Spider-web-inspired membrane reinforced with sulfhydryl-functionalized cellulose nanocrystals for oil/water separation

Cited by 32 publications

References 51 publications

Composite membranes of polyacrylonitrile cross-linked with cellulose nanocrystals for emulsion separation and regeneration

Composite membranes of polyacrylonitrile cross-linked with cellulose nanocrystals for emulsion separation and regeneration

Facile Fabrication of Superelastic, Hydrophobic, and Hierarchical Polydimethylsiloxane@nanocelluloses Aerogels for Durable Oil/Water Separation

Phosphonium Modified Nanocellulose Membranes with High Permeate Flux and Antibacterial Property for Oily Wastewater Separation

Contact Info

Product

Resources

About