APPLIED SURFACE SCIENCE
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2023
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IF 6.7
Boxuan Yao,Ke Zhang,Xiaoyang Liu,Hua Wei,Zihan Li,Jiarui Zhou,Guangfei Yuan,Xin Wang,Shenghong Yang,Jian Liu
Pursuing special negatively charged adsorbents is critical to selectively removing cationic pollutants from effluent. Herein, we proposed a versatile preparation strategy of negatively charged saccharide-based polymers using easily available saccharides as building blocks and hexachlorocyclotriphosphazene as a linker in a facile “one-step” method. Because of the existence of numerous hydroxyl groups and phosphine nitrile units in the skeleton, these polymers show selective adsorption capacity towards cationic dyes and pharmaceuticals, but not for ionic dyes and uncharged bisphenol A. Notably, β-cyclodextrin-based polymers (β-CDPs) displayed remarkable adsorption towards methylene blue (Q m , 1563 mg g −1 ) and promethazine (Q m , 944 mg g −1 ). Systematic experiments revealed that the synergy of “host-guest” inclusion, electrostatic attraction, and π-π interaction promoted the selective and efficient adsorption of cationic pollutants. Given the efficiently selective adsorption of cationic dyes and pharmaceuticals, these negatively charged saccharide-based polymers should be candidates for the adsorption of other cationic pollutants, including heavy metal ions. This work expanded the scope of the special utilization of biomass-based adsorbents for water remediation.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
Sustainable Materials and Technologies
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2025
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IF 9.2
Homely Isaya Mtui,Shi-Zhong Yang,Bo-Zhong Mu
Surfactants are widely used, especially in the cleaning industry; however, most commercial options remain petrochemical-based, raising concerns due to their non-renewability, toxicity, high dosage requirements, and poor biodegradability. This has intensified the search for sustainable, eco-friendly alternatives. To achieve this appealing solution, this study designed and developed a novel N -(2-(2,3,4,5,6-pentahydroxyhexanamido)ethyl)palmitamide (PHHAEPA) bio-based non-ionic surfactant from renewable δ -gluconolactone (a sugar-based material) and methyl palmitate (derived from waste triglycerides) through a simple and efficient method. The amide intermediate and final surfactant products were structurally characterized using GC/FID, HPLC, FT-IR, 1 H NMR, and 13 C NMR spectroscopy. In additive-free systems, the PHHAEPA sugar-based surfactant decreased the surface tension of deionized water to 23.153 mN/m at a very low critical micelle concentration (CMC) of 4.559 × 10 −5 mol/L. It exhibited strong tolerance to Ca 2+ and Mg 2+ ions up to 1.0 × 10 5 and 5 × 10 4 mg/L, respectively. At 0.1 % ( w / w ), it also exhibited high cleaning efficiency, removing an average of 73 % of various stains from white cloth. Furthermore, it showed strong stabilization of oil-water Pickering emulsions, high foamability and foam stability, excellent wettability, high biodegradability, and low toxicity. These findings substantiate our hypothesis that PHHAEPA sugar-based non-ionic surfactant in additive-free formulations represents a safe and sustainable alternative to petrochemical ones, exhibiting high stain-removal efficiency at low dosages even under harsh environmental conditions.
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DOI
高影响因子
CARBOHYDRATE POLYMERS
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2024
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IF 10.7
Riting Huang,Furui He,Shujuan Yang,Keyang Mai,Shuntian Huang,Haifang Liu,Yuhong Feng,Gaobo Yu,Jiacheng Li
High quantum yield polysaccharide-based materials are significative for the dynamic anti-counterfeiting, while that are limited by weak fluorescence. However, natural polysaccharides with weak fluorescence are not suitable for anti-counterfeiting. Herein, alginate derivatives (SA-PBA) exhibiting aggregation-induced emission with high-quantum yields were synthesized by grafting phenylboronic acid (PBA) onto a sodium alginate (SA) chain. As the concentration increases, polymer assembly can be induced to form more compact soft colloidal aggregates, which enhances the fluorescence properties of alginate derivatives by introducing B ← N coordination bonds in the hydrophobic microregions. Interestingly, the clustered aggregates of SA-PBA can be dynamically controlled by pH, realizing the reversible adjustment of fluorescence. The corresponding mechanism is revealed by the combination of coarse-grained simulations and experiments. It is found that SA-PBA uses a hydrophobic driving force and hydrogen bond interaction to self-assemble in an aqueous solution and promote fluorescence emission. Moreover, the fluorescence quantum yield of SA-PBA can reach 14.4 % and can be reversibly altered by tuning soft colloidal microstructures. Therefore, a reversible information encryption system of SA-PBA is developed for anti-counterfeiting. This work shed some light on how to design novel anti-counterfeit materials based on natural polysaccharides and optimize the dynamic fluorescence conditions.
研究领域:
材料科学
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化学
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纳米技术
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防伪技术
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）