Polyelectrolyte aerogels with regeneration capacity for efficient removal of particulate matters

Wu, Wenna; Ma, Lin; Chen, Xiaoli; Liu, Li; Dong, Shuli; Zou, Huiling; Hao, Jingcheng

doi:10.1016/j.jcis.2022.06.046

Cited by 5 publications

(10 citation statements)

References 34 publications

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“…This alluring filtration capacity of the AP 500 T 600 aerogel was believed to originate from a collaborative result of multiple capture mechanisms. First, with the help of 3D interconnected network, the high porosity and hierarchically porous structure of the aerogels, the physical interception for smoke was enhanced during the filtration process. ,− Second, the TA in prepared aerogels not only generated complexes with nicotine but also trapped polycyclic aromatic hydrocarbons based on the π–π interaction . In addition, the polar functional groups (e.g., O–H, C–O, CO, etc.)…”

Section: Resultsmentioning

confidence: 99%

“…All smoke filtration tests were performed in triplicate. The smoke removal efficiency (η) of the biobased aerogels could be calculated using the following formula ,,, η = ( 1 − c o u t l e t / c i n l e t ) × 100 % where c inlet and c outlet represent the concentrations (μg/m 3 ) of smoke before (at air inlet) and after (at air outlet) filtration, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Sodium alginate (NaAlg) is a biobased polysaccharide derived from natural plants with one carboxylic acid group in each structure unit. 15 Tetradecyltrimethylammonium bromide (TTAB) is a long chain cationic substance with one quaternary ammonium group. The TTA-Alg polyelectrolyte was prepared by simply mixing NaAlg and TTAB solution to produce polyelectrolyte precipitation based on an electrostatic interaction.…”

Section: Introductionmentioning

confidence: 99%

“…), respectively . Much research has proved that filters with multiple capture mechanisms show higher capture efficiency for contaminants than single capture mechanism. , Thus, introducing multiple capture mechanisms into filtration materials can be an appealing strategy to improve the filtration efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, we aim to report a more facile and viable strategy to constructed 3D self-supporting biobased aerogels with desired filtration performance for smoke by liquid-phase one-pot freeze-drying. Sodium alginate (NaAlg) is a biobased polysaccharide derived from natural plants with one carboxylic acid group in each structure unit . Tetradecyltrimethylammonium bromide (TTAB) is a long chain cationic substance with one quaternary ammonium group.…”

Section: Introductionmentioning

confidence: 99%

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Biobased Aerogels Fabricated by the Ice Crystal Method for Smoke Purifying

Sun,

Chai,

Qian

et al. 2024

ACS Appl. Polym. Mater.

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Filters play a crucial role in smoke filtration. However, conventional cigarette filters lack degradability or high filtration capacity. Developing cigarette filters with low cost, degradability, and desirable filtration efficiency is an urgent requirement in the cigarette market. In this study, biobased composite aerogels with hierarchically porous structure for cigarette smoke are fabricated. The prepared aerogels consist of naturally biocompatible materials; the microfibrillated cellulose and poly(vinyl alcohol) endow the composite aerogels with mechanical robustness and flexibility. In addition, tannic acid not only has the effect of trapping toxic chemicals in smoke but also performs an antibacterial function in collaboration with the fabricated TTA-Alg polyelectrolyte. It is believed that the hierarchically porous structure of the biobased aerogels induced by the ice template method facilitates the adequate flow of the smoke in aerogels, resulting in high purification efficiency and a relatively constant pressure drop during the smoke filtration process, which is conducive for smoke purification. The prepared aerogel could efficiently capture toxic chemicals in smoke, including filtering 96.58% of oil smoke, 88.64% of total nonmethane hydrocarbons, and 94.79% of particulate matter, exhibiting higher removal efficiency than commercial cigarette filters. In brief, the designed biobased aerogels possess low cost, environmental friendliness, compressibility, and desirable smoke filtration efficiency, showing a promising application prospect for smoke filtration.

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