CARBOHYDRATE POLYMERS
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2022
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IF 10.723
Yongzhen Wang,Xiang Yu,Weiqiang Fan,Rulin Liu,Yuyan Liu
Oil spills threaten ecosystem and health seriously. Porous foams have been proved as ideal candidates for oil absorbents, however, many with poor oil retention (re-bleeding). Here, we creatively developed a composite foam oil absorbent capable of oil absorption and oil gelation , based on porous alginate foam and hydroxyl aluminum stearate oil gelator . The microstructure of alginate foam can be adjusted by the addition of t-butanol in the solvent, and long alkyl chains of gelator endow foam skeleton with good hydrophobicity , avoiding secondary pollution from traditional hydrophobic chemical modification. Interconnected skeleton decorated by oleophilic gelators contributes to high oil absorption. Oleophilic gelator can self-assemble into 3D network to entrap oils to form gels, giving rise to effective oil retention, realizing the integration of high oil absorption and oil retention. The natural abundant, low-cost composite foam would be promising for tackling oil spills.
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JOURNAL OF HAZARDOUS MATERIALS
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2022
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IF 14.224
Xianfeng Liu,Zhong Liu,Xueyan Wang,Yuan Gao,Jun Zhang,Tingting Fan,Xin Ning,Seeram Ramakrishna,Yun-Ze Long
Oil leakage has posed serious threat to the environment, but still remain a great challenge to be solved especially for harsh environmental conditions. Herein, robust superhydrophobic nickel hydroxide grown by hydrothermal method and stearic acid modification on a blow-spun polyacrylonitrile (PAN)/Al 2 O 3 nanofibrous sponge was proposed, so that the nickel hydroxide-modified polyacrylonitrile sponge (NPAS) was successfully obtained for efficient oil-water separation. The porous NPAS with a distinctive hierarchically layered structure, which exhibited excellent separation efficiency and mechanical elasticity. Due to its superhydrophobic and high porosity, the absorption capacity of NPAS could reach as high as 45 g g −1 . It could not only separate a series of oil-water mixture with a high steady flux of 12,413 L m −2 h −1 (dichloromethane-water), but also separate stabilized emulsions with a superior flux 2032 L m −2 h −1 (water-in-dichloromethane) under gravity, all of that with above 99.92% separation efficiencies, which was higher than that of the most reported sponges. Most importantly, its strong acid/alkali resistance enable it is suitable for hazardous materials treatment applications in harsh environmental conditions. This novel NPAS via facile large-scale blow-spinning provide an efficient strategy for oil-containing wastewater treatment and environmental protection.
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NEW JOURNAL OF CHEMISTRY
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2021
·Vol. 46
·期 4
·1770-1778
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IF 3.591
Xia Jiang,Feng Long,Qiaolong Zhai,Jiaping Zhao,Peng Liu,Junming Xu
Soap stocks are by-products obtained during the refining process of vegetable oil, and are mainly feedstocks to produce acidified oil. In this work, an efficient process was developed to convert soap stock into a high-quality biofuel with low impurity content. A combination of acidification and catalytic cracking reactions employed as pretreatment was investigated to decrease the impurity content in the soap stock feedstock for obtaining a value-added biofuel. A high olefin content (approximately 47%) pyrolytic oil was obtained during the pretreatment. For further improvement of the cold flow properties, hydro-isomerization of pyrolytic oil for the formation of iso-alkanes over the Ce–Pt/SAPO-11and Ce–Pt/ZSM-5 catalysts was then carried out. The isomerization reaction temperature could be decreased to 320 °C because of the approximately 47% olefin content. The cold filter plugging point (CFPP) of the resulting product could be obtained at −11 °C, and the sulfur content could be decreased to lower than 10 ppm, which could meet the EN and ASTM specifications.
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JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
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2021
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IF 2.351
Chijian Zhang,Yongjie Lu,Yong Ai,Xian Xu,Siyang Zhu,Bing Zhang,Minghui Tang,Lanyue Zhang,Tinggang He
Glabridin, a compound of the flavonoid, has shown outstanding skin-whitening and anti-aging properties, but its water insolubility limits its wide application. Therefore, glabridin liposome (GL) has been developed to improve its poor bioavailability, while there are few studies to evaluate its amelioration of UVB- induced photoaging. This study is performed to investigate the amelioration of GL against UVB- induced cutaneous photoaging. The prepared GL has a spheroidal morphology with an average diameter of 200 nm. The GL shows lower cytotoxicity than glabridin, but it has a more effective role in inhibition of melanin. Moreover, the application of GL can effectively relieve UV radiation induced erythema and leathery skin, associated with the down-regulated expression of inflammatory cytokines (TNF-α, IL-6 and IL-10). Taken together, these results demonstrate that GL has potentials as topical therapeutic agents against UVB radiation induced skin damage through inhibiting inflammation.
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ACS Biomaterials Science & Engineering
·
2023
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IF 5.8
Tianxiao Wang,Yunqian Dong,Yingchao Xu,Xingyuan Qu,Guangyu Li,Yunting Guo,Jianshe Lian,Zhihui Zhang,Luquan Ren
Magnesium (Mg) alloys, a degradable material, have been studied for medical applications due to their excellent mechanical and chemical properties. However, their applications are limited by rapid corrosion. In this work, stearic acid and sodium stearate were used to treat the silane-induced calcium phosphate dihydrate coating to improve its protection for the Mg alloy further without changing the bone-like structure of calcium phosphate. The different effects of stearic acid treatment and sodium stearate treatment were compared. Electrochemical test and immersion test results confirmed that the corrosion resistance of the stearic acid-treated composite coating was greatly enhanced with a reduced corrosion current density by 3 orders of magnitude and hydrogen evolution reduced to 1/25 after 14 days. The stearic acid-treated coating also exhibited improved in vitro biocompatibility corroborated by promoted cell viability and better cell morphology.
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JOURNAL OF CRYSTAL GROWTH
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2012
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IF 1.726
Shenjie Li,Daocheng Pan
Cu 2 SnSe 3 nanocrystals with a metastable zincblende and wurtzite structure have been successfully synthesized. The crystal structures were confirmed by means of X-ray diffraction and selected area electron diffraction . The lattice mismatch between Cu 2 SnSe 3 and ZnSe is only 0.26%, thus homogeneously alloyed (ZnSe) x (Cu 2 SnSe 3 ) 1− x nanocrystals could be synthesized. The band gaps of nanocrystals can be tuned in a wide range of 2.75 to 0.92 eV; however the bowing parameter as high as 19.1 eV for alloyed (ZnSe) x (Cu 2 SnSe 3 ) 1− x nanocrystals was observed. These low cost and dispersible alloyed (ZnSe) x (Cu 2 SnSe 3 ) 1− x nanocrystals with a targeted band gap have a high potential in thin film solar cells.
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MOLECULES
·
2024
·Vol. 29
·期 24
·5852
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IF 4.2
Zhiwei Wu,Weiqin Yu,Fenghao Luo,Yue Jin,Ligou Pan,Qianjun Deng,Qing Wang,Mingguang Yu
Traditional organic light-emitting materials hinder their anti-counterfeiting application in solid state due to their aggregation-caused quenching effect. A facile and straightforward method was reported to introduce AIE molecules into microspheres and manipulate different reaction parameters to prepare AIE microspheres with different morphologies. In this strategy, fluorescent microspheres with spherical, apple-shaped, and hemoglobin-like types were synthesized. Driven by the photocyclization and oxidation of tetraphenylethene, microspheres can be used as an aqueous fluorescence ink with erasable properties. The fluorescent patterns printed by microsphere ink on paper can be irreversibly erased by prolonged exposure to ultraviolet light (365 nm, 60 mw/cm2). Moreover, the multi-morphology microspheres can be further arranged for multiple-information encryption and anti-counterfeiting of barcodes and two-dimensional codes, in which double validation was carried out through fluorescence spectroscopy and laser confocal microscopy. This approach provides a new method for more reliable anti-counterfeiting and information encryption.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Xiaojun Luo,Qinxia Liu,Lei Lei,Wei Xia,Ya-Meng Yin,Xue-Qian Wu,Cai-Hong Yang,Ruan Chi,Dong-Sheng Li
Na 3 V 2 O 2 (PO 4 ) 2 F (NVPOF) as a prospective candidate for sodium-ion battery cathodes, faces practical challenges for its inherently low electronic conductivity, which impedes fast reaction kinetics and diminishes its sodium storage efficiency. To address these limitations, we introduce an in-situ interface engineering strategy for NVOPF by integrating 1D hydroxylated carbon nanotubes (CNTs) onto the surface of NVOPF nanosheets. The CNTs are arranged in-situ in multiple directions and significantly enhance adhesion to the NVOPF nanosheets via [PO 4 ] 3‒ ‒CNTs linkages, establishing a robust and conductive interface. This strategy effectively mitigates the aggregation of NVOPF nanosheets, ensuring optimized electronic contact and a persistent, efficient charge-transfer network within the composite. The resultant NVOPF-15%CNTs composite exhibits enhanced rate performance (88.01 mAh g ‒1 at 50 C) and excellent cyclability (retaining 82.4% capacity after 10000 cycles at 50 C). Comprehensive experimental and theoretical analyses confirm that the designed conductive interface accelerates charge-transfer kinetics and preserves structural integrity. This study provides valuable insights into optimizing NVOPF cathode and suggests a versatile approach applicable to improving other cathode materials.
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INTERNATIONAL JOURNAL OF PHARMACEUTICS
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2024
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IF 5.3
Jiayi Li,Xianhong He,Ying Sun,Ruxiao Song,Xuhong Ren,Xin Zhang,Jian Guan,Shirui Mao
A commonly used strategy to improve aerosolization behavior of carrier-based dry powder inhalers (DPIs) is the addition of magnesium stearate as a lubricant, yet it may also negatively affect properties of DPIs. Thus, the aim of this study was to find lubricants that could be used as alternatives of magnesium stearate and meanwhile verify the applicability of using powder rheological properties to predict the performance of different lubricants in DPIs. Here, using fluticasone propionate as a model drug, LH200 as the carrier, influence of lubricants type and particle size, including magnesium stearate, sodium stearate, Leucine, sodium stearate fumarate, Compritol® 888 ATO, and Compritol® HD5 ATO, on the physicochemical properties, powder rheology and aerosolization behavior of the DPI formulations was characterized. Further, the relationship between powder rheological parameters and in-vitro drug deposition parameter, fine particle fraction (FPF), were explored, and the contribution of powder flowability and adhesion was evaluated using principal component analysis (PCA). The results showed that magnesium stearate, sodium stearate and smaller sized leucine significantly reduced the basic flowability energy, aeration energy and Permeability of the DPI formulations, leading to improved aerosolization behavior. A robust linear correlation was established between rheological parameters and FPF. PCA showed that in lubricants containing formulations, the contribution of flowability (74.69%) was greater than that of adhesion (25.31%). In conclusion, sodium stearate and smaller particle size Leucine can be considered as substitutes of magnesium stearate in DPI formulations.
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Nanoscale
·
2024
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IF 5.8
Caicheng Song,Yiwen Guo,Tianwei Wang,Kun Liu,Pin-Yi Zhao,Ying Liu,He Huang,Rongwen Lu,Shufen Zhang
Functional mesoporous carbon nanomaterials with large pores and small particle sizes have broad accessibility, but remain challenging to achieve. This study proposed a dual-template synergistic assembly strategy to facilely synthesize extra-small nitrogen-doped mesoporous carbon nanospheres with large pores in a low-cost manner. Directed by the synergistic effect of the combination of surfactants, sodium oleate (anionic surfactant) and triblock copolymer-P123 (nonionic surfactant) were selected as templates to construct nanomicelles (nanoemulsions), which were co-assembled with melamine-based oligomers to form composite nanomicelles, thus obtaining nitrogen-doped mesoporous polymer nanospheres (NMePS) and then nitrogen-doped mesoporous carbon nanospheres (NMeCS). Based on Schiff base chemistry, the melamine-based oligomers with self-assembly capability were synthesized as precursors, which is different from the conventional synthetic route of melamine–formaldehyde resin. The key parameters involved in the route were investigated comprehensively and correlated with the characterization results. Furthermore, the 50 nm-scale particle size and the large mesoporous size of 5.5 nm of NMeCS can facilitate effective mass transport, coupled with their high nitrogen content (15.7 wt%), contributing to their excellent performance in lithium-ion batteries.
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Journal of Energy Storage
·
2025
·
IF 9.8
Haiquan Zhang,Fuge Wang,Susu He,Bozhou Cao,Qiadong Yao,Ning Wang
Smart phase change materials (PCMs) have been carefully engineered using cutting-edge manufacturing techniques to meet specific application requirements. A multifunctional phase change composite has been developed by combining polyethylene glycol (PEG2000) binary eutectic, sodium stearate (NaR) micro−/nano-medium, and iron powder as raw materials. The binary eutectic PCM provides the composite with plasticity at room temperature. The addition of an appropriate amount of sodium stearate enhances the dispersibility of high-density iron powder (7.86 g cm −3 ) within the PCM, without altering the intrinsic morphology of the binary eutectic (1.27 g cm −3 ) before or after melting. As a result, the functional composite exhibits several attractive properties, including morphology switchability under external forces, temperature, and magnetic fields, asymmetric transmission of electrical signals in temperature gradients, efficient photo-thermal conversion, and excellent thermal storage performance. This self-prepared functional composite holds great potential for applications in drug delivery, morphology control in confined spaces, temperature management in building materials and electronic components, as well as electrical signal transmission across varying temperatures.
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PROGRESS IN ORGANIC COATINGS
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2024
·
IF 6.5
Le Zhang,Rui Li,Hao Ding,Daimei Chen,Xuan Wang
Coatings with superamphiphobicity and photocatalytic degradation properties to achieve excellent self-cleaning performance have received extensive attention. Herein, TiO 2 -SiO 2 composite particles with micro-/nanoscale hierarchical structures were fabricated by hydrophobic agglomeration. The TiO 2 -SiO 2 was modified with 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (PFDTS), and then it was sprayed onto the surfaces of substrates to obtain TiO 2 -SiO 2 /PFDTS coatings. The coating surface exhibited superamphiphobicity and low adhesion properties. The contact angles (CAs) of water, ethylene glycol, glycerol, and hexadecane on the coating surface were 163.5°, 154.6°, 157.3°, and 150.2°, respectively. The slide angles (SAs) of the above droplets on the coating surface were 0.4°, 2.7°, 1.6°, and 11.1°, respectively. In addition, 80.9 % methyl orange solution (10 ppm) was degraded by the TiO 2 -SiO 2 /PFDTS under UV irradiation in 60 min, demonstrating an excellent photocatalytic degradation performance. It also had good adaptability to different substrates, liquids with different properties, and outdoor environments. The results of a mechanistic study showed that SiO 2 and TiO 2 were connected by the carbon chains of modifiers. PFDTS and TiO 2 -SiO 2 might be combined by chemical bonds or surface carbon chains. The hierarchical structure of TiO 2 -SiO 2 and the low surface energy of PFDTS resulted in the superamphiphobic property of the TiO 2 -SiO 2 /PFDTS coating.
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