Scientific Reports
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2025
·Vol. 15
·期 1
·1-15
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IF 3.9
Tan Siwei,Ruan Xiaoyin,Ye Haipeng,Shao Ji,Shan Xiaoyue,Shi Yanpeng,Le Yanna
Wastewater treatment requires materials with a high capacity for adsorbing diverse pollutants. A novel adsorbent was synthesized herein by wrapping glucose/graphene oxide hybrids with aluminum hydroxide in a cetyltrimethylammonium bromide microemulsion and was used for dual adsorption of fluoride (FL) and methylene blue (MB) from water. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) analysis, and Barrett–Joyner–Halenda analysis were employed to characterize the synthesized adsorbent. The pH, initial pollutant concentration, adsorbent dose, and contact time for dual adsorption were determined. Isotherm and kinetic models were applied to investigate the dual adsorption mechanism. Attributed to the good microstructure, enhanced surface area, and ion-exchange behavior, the maximum adsorption capacity of this adsorbent was 14.8 mg/g for FL (1.0 g/L adsorbent) and 232.6 mg/g for MB (0.2 g/L adsorbent) simultaneously at pH 6.0. The enhanced adsorption efficiency and multi- selectivity of this adsorbent suggest its potential to decrease the regeneration frequency of adsorption materials, lower processing costs, and mitigate environmental impacts. This adsorbent is suitable for future development as a sustainable slow-release agent, enabling prolonged use with straightforward operational procedures and efficiency.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOMACROMOLECULES
·
2020
·
IF 6.092
Yanlei Hu,Liang Liu,Juan Yu,Zhiguo Wang,Yimin Fan
Native biopolymer nanofibers (cellulose, chitin, and silk nanofiber) are one of the most important contributors to the outstanding functions and mechanical properties of natural materials. To enhance the mechanical performance, A great deal of top-down routes have been reported to prepare biopolymers nanofibers/nanowhiskers that retaining their nanostructures. Compared with advances in cellulose and chitin nanofibers/nanowhiskers, it remains difficult for direct downsizing the natural silk fibers into silk nanofibers/nanowhiskers (SNFs/SNWs) because of their high crystallinity and sophisticated structures. In this work, environmentally friendly and recyclable deep eutectic solvents (DESs) were used to direct pretreat and downsize natural silks into silk nanowhiskers with high yield. SNWs with similar diameter (3.1–22 nm for OA/ChCl DES treated SNWs, 2.7–20 nm for CA/ChCl DES treated SNWs) and contour length (329 ± 140 nm for OA/ChCl DES treated SNWs, 365 ± 200 nm for CA/ChCl DES treated SNWs) to individual nanofibers in natural silk fibers were obtained. In addition, the separated DES with a recovery yield of at least 92% could be reused four times to produce SNWs, indicating the possibility of DESs as green solvents for sustainable biopolymer nanomaterial extraction. Based on the inherent amphoteric properties of SNWs, multicompatibility was explored to facilely composite SNWs with various polymers for preparation of coextruded membranes with enhanced performance and endowed the composites with protein-endowed double adsorption properties. Overall, this work demonstrated that the DES pretreatment process is promising for green and low-cost biopolymer nanomaterial extraction and that the SNWs prepared via DES have good prospects as nanoscale materials in the environmental field and in development of smart biomaterials and drug delivery in biomedicine.
研究领域:
材料科学
·
生物医学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Yanlei Hu,Liang Liu,Juan Yu,Zhiguo Wang,Yimin Fan
Natural silk fibers consist of well-organized, sophisticated hierarchical architectures that contribute to the robust mechanical performance and functions of the fibers; thus, the direct extraction of silk nanofibers (SNFs) at a single level is a major challenge. Herein, a novel simple, environmentally friendly, and recyclable route was developed to directly downsize natural silks into SNFs via a green deep eutectic solvent (DES) system assisted by mild mechanical disintegration. SNFs with diameters ranging from 2.3 to 28 nm and lengths of 598 ± 308 nm were isolated at a high yield (over 70%) under optimal DES pretreatment conditions. On the basis of the inherent amphoteric properties of SNFs, the pH sensitivity and reversibility were explored to lighten the weight of SNF dispersions for storage and transport, and furthermore, the double adsorption properties of the SNFs might functionalize them for transparent anticounterfeiting devices. In addition, the nanodispersibility of the SNFs in organic solvents and the subsequent nanofiber-containing composite materials with hydrophobic polymer matrixes provide new prospects for wound dressing and porous scaffold materials in biomedical applications.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Bo Yang,Qi Chai,Xiumin Li,Xiao Du,Fengfeng Gao,Xiaogang Hao
A film electrode materials of iron-manganese oxide composite carbon nanotubes (FeMnO x /CNTs) with dual adsorption sites was obtained by a co-precipitation method, which exhibited excellent selectivity of WO 4 2- in an electrochemically switched ion exchange (ESIX) system. The main components of FeMnO x are MnO x and Fe(OH) 3 . In FeMnO x /CNTs composite film , Fe(OH) 3 with abundant hydroxyl functional groups on its surface improved the ion storage capacity, while MnO x served as the main selective separation material to selectively adsorb the WO 4 2- . A scalable ESIX pilot system was also designed to examine the effect of different operating conditions on system performance. The W(Ⅵ) adsorption capacity was as high as 187.76 mg/g and the separation factor of W/Mo was 21.03. Combining experimental characterization and results, it was confirmed that the highly efficient selective extraction of WO 4 2- in neutral solution should be derived from the dual-site (i.e., electrochemical coordination sites on MnO x and electrochemically induced inner-sphere complexation sites on Fe(OH) 3 ) adsorption. Hence, it is believed that such a novel electroactive FeMnO x /CNTs film electrode with dual adsorption sites could be a promising candidate for industrialized tungsten-molybdenum separation by ESIX technology.
研究领域:
材料科学
·
环境工程
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）