Preparation of lignosulfonate ionic hydrogels for supercapacitors, sensors and dye adsorbent applications

Mondal, Ajoy Kanti; Wu, Shuai; Xu, Dezhong; Zou, Qiuxia; Chen, Lihui; Huang, Liulian; Huang, Fang; Ni, Yonghao

doi:10.1016/j.ijbiomac.2021.07.021

Cited by 45 publications

(26 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The transmittance peaks for the lignosulfonate hydrogel at 1103 and 1211 cm –1 are attributed to the stretching vibrations of C–O–C and C–C bonds, respectively, confirming the presence of polyoxyethylene ether. The broad bands at 2872 and 2935 cm –1 are attributed to the C–H stretching of methyl and methylene in PEGDGE, respectively …”

Section: Resultssupporting

confidence: 94%

“…The above results demonstrate that both the conductivity and strength increase after Fe 3+ impregnation, which is different from our previous study, showing that the strength of the lignosulfonate-PEGDGE hydrogel decreases rapidly after water immersion, although the conductivity increases . Further results are provided in Supporting Video 1 and Figure c, showing that after soaking in water and Fe 3+ solution, our present Fe 3+ -rich lignin hydrogel is more flexible.…”

Section: Resultsmentioning

confidence: 99%

“…From the GCD plots, the specific capacitance ( C , F·g –1 ) of the electrolyte supercapacitor was calculated according to eq . For the calculation of energy density ( E , Wh·kg –1 ) and power density ( P , W·kg –1 ), eqs and were used, respectively, where C , E , and P denote the specific capacitance, energy density, and power density, respectively. I , m , and Δ V indicate the charging/discharging current, the sum of the mass of PANI deposited in two electrodes (g), and voltage count after IR drop ( V ), respectively.…”

Section: Methodsmentioning

confidence: 98%

“…Lignosulfonate has rich hydroxyl, carboxyl, and sulfonic groups, − and these functional groups can deliver particular properties to the end product of hydrogels, including chelating or complexing capabilities with metal ions, such as Fe 3+ . , These metal ion complexes, particularly catecholic hydroxyl complexes in hydrogels can strengthen the hydrogel network, thus improving the mechanical properties of the hydrogels. , Furthermore, total complexation of metal ions with hydrophilic groups, such as sulfonic, phenolic hydroxyl, and carboxylic groups, will seal off these groups so that the resultant hydrogels become hydrophobic. , …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Design of Fe³⁺-Rich, High-Conductivity Lignin Hydrogels for Supercapacitor and Sensor Applications

Mondal

et al. 2022

Biomacromolecules

Self Cite

View full text Add to dashboard Cite

Preparation of natural polymer-based highly conductive hydrogels with tunable mechanical properties for applications in flexible electronics is still challenging. Herein, we report a facile method to prepare lignin-based Fe3+-rich, high-conductivity hydrogels via the following two-step process: (1) lignin hydrogels are prepared by cross-linking sulfonated lignin with poly(ethylene glycol) diglycidyl ether (PEGDGE) and (2) Fe3+ ions are impregnated into the lignin hydrogel by simply soaking in FeCl3. Benefiting from Fe3+ ion complexation with catechol groups and other functional groups in lignin, the resultant hydrogels exhibit unique properties, such as high conductivity (as high as 6.69 S·m–1) and excellent mechanical and hydrophobic properties. As a strain sensor, the as-prepared lignin hydrogel shows high sensitivity when detecting various human motions. With the flow of moist air, the Fe3+-rich lignin hydrogel generates an output voltage of 162.8 mV. The assembled supercapacitor of the hydrogel electrolyte demonstrates a high specific capacitance of 301.8 F·g–1, with a maximum energy density of 26.73 Wh·kg–1, a power density of 2.38 kW·kg–1, and a capacitance retention of 94.1% after 10 000 consecutive charge–discharge cycles. These results support the conclusion that lignin-based Fe3+-rich, high-conductivity hydrogels have promising applications in different fields, including sensors and supercapacitors, rendering a new platform for the value-added utilization of lignin.

show abstract

Section: Resultssupporting

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design of Fe³⁺-Rich, High-Conductivity Lignin Hydrogels for Supercapacitor and Sensor Applications

Mondal

et al. 2022

Biomacromolecules

Self Cite

View full text Add to dashboard Cite

show abstract

“…Hydrogels are identified scientifically as a hydrophilic polymer that is biocompatible and have a determined stimuli-response [5][6][7][8][9][10][11]. Their mechanical and chemical properties have made them available to a variety of biomedical applications; not limited to tissue engineering, actuators, sensors, and drug-delivery devices [5,6,[12][13][14][15][16]. Hydrophilic functional groups attached to the backbone give the ability for hydrogels to absorb water [17] (pp.…”

Section: Introductionmentioning

confidence: 99%

Crosslinking-Dependent Drug Kinetics in Hydrogels for Ophthalmic Delivery

2022

View full text Add to dashboard Cite

Drug-diffusion kinetics in 2-hydroxyethyl methacrylate hydrogels were studied as a function of the crosslinking density and porosity. By varying the concentration of the crosslinker, tetraethylene glycol dimethacrylate, we demonstrated how the release of Timolol maleate could be optimized to allow for efficient drug delivery. FTIR and spectrophotometry supplied optical inferences into the functional groups present. By studying the swelling and degradation of hydrogels, supplemented with drug-release kinetics studies, the relationship between these two tenets could be formulated.

show abstract

Tough Supramolecular Hydrogels Crafted via Lignin‐Induced Self‐Assembly

Pan,

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

Supramolecular hydrogels are typically assembled through weak non‐covalent interactions, posing a significant challenge in achieving ultra strength. Developing a higher strength based on molecular/nanoscale engineering concepts is a potential improvement strategy. Herein, a super‐tough supramolecular hydrogel is assembled by gradually diffusing lignosulfonate sodium (LS) into a polyvinyl alcohol (PVA) solution. Both simulations and analytical results indicate that the assembly and subsequent enhancement of the crosslinked network are primarily attributed to LS‐induced formation and gradual densification of strong crystalline domains within the hydrogel. The optimized hydrogel exhibits impressive mechanical properties with tensile strength of ≈20 MPa, Young's modulus of ≈14 MPa, and toughness of ≈50 MJ m⁻3, making it the strongest lignin‐PVA/polymer hydrogel known so far. Moreover, LS provides the supramolecular hydrogel with excellent low‐temperature stability (<‐60 °C), antibacterial, and UV‐blocking capability (≈100%). Interestingly, the diffusion ability of LS is demonstrated for self‐restructuring damaged supramolecular hydrogel, achieving 3D patterning on hydrogel surfaces, and enhancing the local strength of the freeze‐thaw PVA hydrogel. The goal is to foster a versatile hydrogel platform by combining eco‐friendly LS with biocompatible PVA, paving the way for innovation and interdisciplinarity in biomedicine, engineering materials, and forestry science.

show abstract

Preparation of lignosulfonate ionic hydrogels for supercapacitors, sensors and dye adsorbent applications

Cited by 45 publications

References 59 publications

Design of Fe³⁺-Rich, High-Conductivity Lignin Hydrogels for Supercapacitor and Sensor Applications

Design of Fe³⁺-Rich, High-Conductivity Lignin Hydrogels for Supercapacitor and Sensor Applications

Crosslinking-Dependent Drug Kinetics in Hydrogels for Ophthalmic Delivery

Tough Supramolecular Hydrogels Crafted via Lignin‐Induced Self‐Assembly

Contact Info

Product

Resources

About

Preparation of lignosulfonate ionic hydrogels for supercapacitors, sensors and dye adsorbent applications

Cited by 45 publications

References 59 publications

Design of Fe3+-Rich, High-Conductivity Lignin Hydrogels for Supercapacitor and Sensor Applications

Design of Fe3+-Rich, High-Conductivity Lignin Hydrogels for Supercapacitor and Sensor Applications

Crosslinking-Dependent Drug Kinetics in Hydrogels for Ophthalmic Delivery

Tough Supramolecular Hydrogels Crafted via Lignin‐Induced Self‐Assembly

Contact Info

Product

Resources

About

Design of Fe³⁺-Rich, High-Conductivity Lignin Hydrogels for Supercapacitor and Sensor Applications

Design of Fe³⁺-Rich, High-Conductivity Lignin Hydrogels for Supercapacitor and Sensor Applications