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Yang Z, Zang L, Dou T, Xin Y, Zhang Y, Zhao D, Sun L. Asymmetric Cellulose/Carbon Nanotubes Membrane with Interconnected Pores Fabricated by Droplet Method for Solar-Driven Interfacial Evaporation and Desalination. MEMBRANES 2022; 12:membranes12040369. [PMID: 35448339 PMCID: PMC9028968 DOI: 10.3390/membranes12040369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/25/2022] [Accepted: 03/25/2022] [Indexed: 11/16/2022]
Abstract
Solar-driven interfacial water purification and desalination have attracted much attention in environmentally friendly water treatment field. The structure design of the photothermal materials is still a critical factor to improve the evaporation performance such as evaporation rate and energy conversion efficiency. Herein, an asymmetric cellulose/carbon nanotubes membrane was designed as the photothermal membrane via a modified droplet method. Under 1 sun irradiation, the evaporation rate and energy efficiency of pure water can reach up to 1.6 kg m−2 h−1 and 89%, respectively. Moreover, stable reusability and desalination performance made the cellulose/carbon nanotubes membrane a promising photothermal membrane which can be used for solar-driven desalination.
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Affiliation(s)
- Zhiyu Yang
- School of Chemical Engineering and Materials, Heilongjiang University, Harbin 150080, China; (Z.Y.); (T.D.); (Y.X.); (L.S.)
| | - Linlin Zang
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China;
| | - Tianwei Dou
- School of Chemical Engineering and Materials, Heilongjiang University, Harbin 150080, China; (Z.Y.); (T.D.); (Y.X.); (L.S.)
| | - Yajing Xin
- School of Chemical Engineering and Materials, Heilongjiang University, Harbin 150080, China; (Z.Y.); (T.D.); (Y.X.); (L.S.)
| | - Yanhong Zhang
- School of Chemical Engineering and Materials, Heilongjiang University, Harbin 150080, China; (Z.Y.); (T.D.); (Y.X.); (L.S.)
- Correspondence: (Y.Z.); (D.Z.); Tel.: +86-188-4512-8078 (Y.Z.); +86-158-0461-1506 (D.Z.)
| | - Dongyu Zhao
- School of Chemical Engineering and Materials, Heilongjiang University, Harbin 150080, China; (Z.Y.); (T.D.); (Y.X.); (L.S.)
- Correspondence: (Y.Z.); (D.Z.); Tel.: +86-188-4512-8078 (Y.Z.); +86-158-0461-1506 (D.Z.)
| | - Liguo Sun
- School of Chemical Engineering and Materials, Heilongjiang University, Harbin 150080, China; (Z.Y.); (T.D.); (Y.X.); (L.S.)
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Zeolite Composite Nanofiber Mesh for Indoxyl Sulfate Adsorption toward Wearable Blood Purification Devices. FIBERS 2021. [DOI: 10.3390/fib9060037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A nanofiber mesh was prepared for the adsorption of indoxyl sulfate (IS), a toxin associated with chronic kidney disease. Removing IS is highly demanded for efficient blood purification. The objective of this study is to develop a zeolite composite nanofiber mesh to remove IS efficiently. Eight zeolites with different properties were used for IS adsorption, where a zeolite with a pore size of 7 Å, H+ cations, and a silica to aluminum ratio of 240 mol/mol exhibited the highest adsorption capacity. This was primarily attributed to its suitable silica to aluminum ratio. The zeolites were incorporated in biocompatible poly (ethylene-co-vinyl alcohol) (EVOH) nanofibers, and a zeolite composite nanofiber mesh was successfully fabricated via electrospinning. The nanofiber mesh exhibited an IS adsorption capacity of 107 μg/g, while the adsorption capacity by zeolite increased from 208 μg/g in powder form to 386 μg/g when dispersed in the mesh. This also led to an increase in cell viability from 86% to 96%. These results demonstrated that this zeolite composite nanofiber mesh can be safely and effectively applied in wearable blood purification devices.
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