Robust PEDOT:PSS-based hydrogel for highly efficient interfacial solar water purification

Zhao, Qi; Liu, Juyang; Wu, Zhixin; Xu, Xinye; Ma, Hude; Hou, Jian; Xu, Qiaoli; Yang, Ruping; Zhang, Kaiyue; Zhang, Mengmeng; Yang, Hanjun; Peng, Weilong; Liu, Ximei; Zhang, Chengchen; Xu, Jingkun; Lu, Baoyang

doi:10.1016/j.cej.2022.136284

Cited by 90 publications

(38 citation statements)

References 33 publications

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“…The evaporation rate can reach 2.563 kg m –2 h –1 with an evaporation efficiency of 98.82% under 1 sun. However, it is still not considered excellent compared to that of some of the photothermal materials reported so far …”

Section: Introductionmentioning

confidence: 96%

Solar Interface Evaporation System Assisted by Mirror Reflection Heat Collection Based on Sunflower Chasing the Sun

Wang

Chang

et al. 2022

ACS Appl. Mater. Interfaces

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In this study, a photothermal material, C-CP/MnO2, was prepared by compounding corrugated paper (CP) and MnO2, with excellent photothermal conversion efficiency. The porous structure and the presence of oxygen-containing functional groups enabled the material to have a good water transport function and a fast vapor escape rate. The special semihollow structure also allowed C-CP/MnO2 to have better thermal management and an evaporation rate that could reach 2.563 kg m–2 h–1 with an efficiency of 98.82% under 1 sun. The continuous arch structure inside C-CP/MnO2 was able to induce the Marangoni effect to achieve continuous desalination of high-concentration brine. The mirror heat collector achieved efficient light capture on the material surface through multiple reflections of light. This could increase the amount of radiation on the material surface by nearly 80%, and the evaporation rate could reach 4.314 kg m–2 h–1 under 1 sun. Moreover, this study demonstrated the light propagation path by simulating the light using Zemax to verify the correctness of the experimental results. Inspired by the sunflower chasing the sun, we designed a chasing heat collection system powered by solar panels to achieve efficient evaporation outdoors. This provided new ideas for further development of solar interface evaporation and also provided guidance for other industrial applications.

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Section: Introductionmentioning

confidence: 96%

Solar Interface Evaporation System Assisted by Mirror Reflection Heat Collection Based on Sunflower Chasing the Sun

Wang

Chang

et al. 2022

ACS Appl. Mater. Interfaces

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“…17 Moreover, 2D PEDOT-based devices are usually physically and mechanically different from biological tissues that contain large amounts of water and have soft mechanical properties, with Young's moduli in the range of 1 kPa−1 MPa 18 For such purpose, new PEDOT-based polymer formulations that enhance PEDOT processability by 3D printing techniques have been investigated. 19,20 Very recently, we have shown that PEDOT can be copolymerized with different biopolyesters, i.e., poly(ε-caprolactone) (PCL) and poly(lactic acid) (PLA), leading to graft copolymers, PEDOT-g-PCL and PEDOT-g-PLA, respectively, with excellent shear-thinning behavior to be processed by direct ink writing (DIW) in the melting state. 21 These 3D scaffolds showed biocompatibility in the presence of myoblasts and cardiomyocytes, as well as electroactive properties for tissue engineering applications.…”

Section: Introductionmentioning

confidence: 99%

“…For such purpose, new PEDOT-based polymer formulations that enhance PEDOT processability by 3D printing techniques have been investigated. , Very recently, we have shown that PEDOT can be copolymerized with different biopolyesters, i.e., poly(ε-caprolactone) (PCL) and poly(lactic acid) (PLA), leading to graft copolymers, PEDOT- g -PCL and PEDOT- g -PLA, respectively, with excellent shear-thinning behavior to be processed by direct ink writing (DIW) in the melting state . These 3D scaffolds showed biocompatibility in the presence of myoblasts and cardiomyocytes, as well as electroactive properties for tissue engineering applications. , Apart from that, the development of printable conductive hydrogels with enhanced flexibility and adhesion properties would be beneficial. , That is the case of PEDOT:polystyrene sulfonate (PSS) dispersions mixed with organic solvents, poly(vinyl alcohol) (PVA), or natural polymers forming shear-thinning gels (10 2 –10 3 Pa s) able to be printed by DIW in a shape-defined three-dimensional (3D) structure to be employed as soft sensors or cell-laden scaffolds. − Besides, PEDOT:PSS dispersions have also been inkjet-printed for the fabrication of organic electrochemical transistors (OECTs) and conformable tattoo electrodes for electrophysiology. − Likewise, inkjet-printing was employed to print photocurable formulations of PEDOT:PSS, 2-cholinium lactate methacrylate, ethylene glycol dimethacrylate as a cross-linker, and a photoinitiator, which required a postprinting photopolymerization step to obtain the final patterns for electrocardiography (ECG), making this process time-consuming .…”

Section: Introductionmentioning

confidence: 99%

Digital Light 3D Printing of PEDOT-Based Photopolymerizable Inks for Biosensing

Lopez‐Larrea

Criado‐Gonzalez

Dominguez‐Alfaro

et al. 2022

ACS Appl. Polym. Mater.

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3D conductive materials such as polymers and hydrogels that interface between biology and electronics are actively being researched for the fabrication of bioelectronic devices. In this work, short-time (5 s) photopolymerizable conductive inks based on poly(3,4-ethylenedioxythiophene) (PEDOT):polystyrene sulfonate (PSS) dispersed in an aqueous matrix formed by a vinyl resin, poly(ethylene glycol) diacrylate (PEGDA) with different molecular weights ( M n = 250, 575, and 700 Da), ethylene glycol (EG), and a photoinitiator have been optimized. These inks can be processed by Digital Light 3D Printing (DLP) leading to flexible and shape-defined conductive hydrogels and dry conductive PEDOTs, whose printability resolution increases with PEGDA molecular weight. Besides, the printed conductive PEDOT-based hydrogels are able to swell in water, exhibiting soft mechanical properties (Young’s modulus of ∼3 MPa) similar to those of skin tissues and good conductivity values (10 –2 S cm –1 ) for biosensing. Finally, the printed conductive hydrogels were tested as bioelectrodes for human electrocardiography (ECG) and electromyography (EMG) recordings, showing a long-term activity, up to 2 weeks, and enhanced detection signals compared to commercial Ag/AgCl medical electrodes for health monitoring.

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“…However, these bioelectronic devices based on inorganic materials are limited by mechanical mismatches with biological tissues, leading to unstable and uncomfortable signal collection/stimulation [ 4 , 5 , 6 ]. Compared to traditional inorganic materials, tissue-like soft materials can replace traditional rigid electronics to improve compliance and improve performance to suffice for practical applications [ 3 , 6 , 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

3D Printing of Stretchable, Adhesive and Conductive Ti3C2Tx-Polyacrylic Acid Hydrogels

et al. 2022

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Stretchable, adhesive, and conductive hydrogels have been regarded as ideal interfacial materials for seamless and biocompatible integration with the human body. However, existing hydrogels can rarely achieve good mechanical, electrical, and adhesive properties simultaneously, as well as limited patterning/manufacturing techniques posing severe challenges to bioelectronic research and their practical applications. Herein, we develop a stretchable, adhesive, and conductive Ti3C2Tx-polyacrylic acid hydrogel by a simple pre-crosslinking method followed by successive direct ink writing 3D printing. Pre-polymerization of acrylic acid can be initiated by mechanical mixing with Ti3C2Tx nanosheet suspension, leading to the formation of viscous 3D printable ink. Secondary free radical polymerization of the ink patterns via 3D printing can achieve a stretchable, adhesive, and conductive Ti3C2Tx-polyacrylic acid hydrogel. The as-formed hydrogel exhibits remarkable stretchability (~622%), high electrical conductivity (5.13 S m−1), and good adhesion strength on varying substrates. We further demonstrate the capability of facilely printing such hydrogels into complex geometries like mesh and rhombus patterns with high resolution and robust integration.

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Robust PEDOT:PSS-based hydrogel for highly efficient interfacial solar water purification

Cited by 90 publications

References 33 publications

Solar Interface Evaporation System Assisted by Mirror Reflection Heat Collection Based on Sunflower Chasing the Sun

Solar Interface Evaporation System Assisted by Mirror Reflection Heat Collection Based on Sunflower Chasing the Sun

Digital Light 3D Printing of PEDOT-Based Photopolymerizable Inks for Biosensing

3D Printing of Stretchable, Adhesive and Conductive Ti3C2Tx-Polyacrylic Acid Hydrogels

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