JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2015
·Vol. 27
·期 1
·1020-1030
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IF 1.569
Zhou X. J.,Shi P. H.,Qin Y. F.,Fan J. C.,Min Y. L.,Yao W. F.
Co 3 O 4 /graphene composites were synthesized and their high catalytic activity for the activation of peroxymonosulfate to remove the azo dye (Orange II) in aqueous solutions was found. As for the poor quality of rGO by the chemical process of graphene oxide, here, pristine graphite was exfoliated into graphene flakes through direct sonication with assistance of cetyltrimethyl ammonium bromide, which serves as a dispersant in the solvothermal procedure. The physical and chemical performance of Co 3 O 4 /graphene was characterised by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy and thermogravimetric analysis. The obtained Co 3 O 4 nanocrystals were 15–25 nm in size and connected with each other to form the shape of sticks dispersing on graphene sheets. The Co 3 O 4 /graphene composites completely degraded Orange II solutions within 10 min, the catalyst can be reutilized, and the catalytic activity of the Co 3 O 4 /graphene dropped slightly after four successive runs. In addition, the mechanism for the formation of Co 3 O 4 /graphene nanostructures is also illustrated.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Wenxin Jiang,Wei Xiang,Wei Lu,Dan Yuan,Zhiming Gao,Bing Hu,Yanlei Li,Yuehan Wu,Zhengpeng Feng
Hexadecyltrimethylammonium bromide complexed alginate-Ca 2+ microgels (C/AMGs) were developed as emulsifiers, which shown remarkably improved emulsifying performance than non-complexed alginate-Ca 2+ microgels (AMGs) in previous study. This work focus on the impact of deformability on the emulsifying performance of C/AMGs. By regulating alginate concentration (1.0–4.0 wt%), microgels with different deformability were prepared. Deformability was proved to have great influence on the emulsifying performance of C/AMGs, which was evaluated by Langmuir trough measurements, emulsion appearance, centrifugation stability, digestive behavior, and oxidative stability. Particle size and SEM images indicated microgels prepared with lower alginate concentration are more deformable. C/AMGs (2.0 wt%) exhibits the best emulsifying performance, which could be ascribed to the appreciated deformability and mechanical strength . Digestive behavior and oxidative stability of alginate-Ca 2+ microgel (2.0 wt%) stabilized emulsions were further investigated. Compared with alginate-Ca 2+ microgel (2.0 wt%) stabilized emulsions, C/AMGs (2.0 wt%) stabilized emulsions shown delayed lipid digestion and lower POV. Results of this work supporting that Mickering mechanism have potential in fabricating functional emulsions based on natural polysaccharides .
研究领域:
食品科学
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生物材料学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2017
·
IF 3.359
Nan Hu,Wei Liu,Lixue Jin,Yajie Li,Zhiqiang Li,Guimin Liu,Di Huang,Zhaoliang Wu,Hao Yin
The effective recovery of trace heavy metals from their wastewaters is an important but challenging work. Here, a promising process of nano-adsorption coupled with flotation had been validated for the recovery of trace Cu 2+ from its aqueous solution. Firstly, silica nanoparticles (SNPs) acted as an adsorbing carrier to adsorb Cu 2+ (15 mg/L). Subsequently, cetyl trimethyl ammonium bromide (CTAB) was utilized as a collector to capture SNPs. This process made it possible to combine the advantages of both nano-adsorption and flotation. Finally, the recovery efficiencies of Cu 2+ and SNP ( R SNP and R Cu ) and the volume ratio ( φ ) reached 97.1 ± 4.9%, 94.5 ± 4.7% and 23.8 ± 1.2, respectively under the suitable conditions of pH 6.0, SNP concentration 90 mg/L, CTAB concentration 35 mg/L, the adding time of CTAB 5 min and flotation column height 750 mm. By using this process, a suitable foam stability could be achieved because SNPs, apart from being an adsorbing carrier, also served as a foam stabilizer to significantly enhance the foaming stability. Furthermore, Cu 2+ was easily isolated from the recovered SNPs. Overall, this present work was highly effective for the recovery of trace Cu 2+ from its aqueous solution.
研究领域:
环境工程
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纳米技术
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水处理
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DOI
高影响因子
MATERIALS LETTERS
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2017
·
IF 2.572
Yudong Wang,Tianshun Liao,Miao Shi,Cong Liu,Xiaofeng Chen
This paper reports a facile method for fabricating radial mesoporous bioactive glasses (RMBGs) using Hexadecyl trimethyl ammonium bromide (CTAB) micelle as the reaction center. The radial structure was formed with the extension of precursor dissolved in the hydrophobic solvent (cyclohexane) which gathered in the internal part of the CTAB micelle. The morphology, structure and in vitro bioactivity of RMBGs were investigated by various methods. The results indicate that the CTAB micelle could restrict the precursor-dissolved cyclohexane and was in favor of preparing the RMBGs with radial mesoporous structure, high specific surface area and good apatite-forming ability. The obtained RMBGs with the novel structure and properties may have potential application in drug delivery and hard tissue regeneration.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2019
·
IF 2.752
Licong Wang,Chengying Shen,Yuhua Cao
In our previous study, cetyltrimethylammonium bromide (CTAB) admicelles on polystyrene (PS) microspheres for the adsolubilization of phenanthrene had been developed. In this work, CTAB admicelles modified on magnetic PS nanocomposites was used as a novel adsorbent to facilitate magnetic separation. Magnetic PS (MPS) nanoparticles (NPs) were synthesized by miniemulsion polymerization, in which the emulsifier was polyvinylpyrrolidone (PVP) and an oil phase consisted of oleate-modified Fe 3 O 4 NPs dispersed in octane and styrene as the monomer. MPS NPs and CTAB-modified MPS NPs were characterized using transmission electron microscopy (TEM), vibrating sample magnetometry (VSM), Brunauer–Emmet–Teller, and atomic force microscopy (AFM) analysis. The TEM results revealed that the MPS NPs had regularly spherical shape with an average diameter of 140 nm. The saturation magnetization (Ms) of MPS NPs and CTAB-modified MPS NPs were 49.04 and 32.52 emu·g −1 , respectively. Unexpectedly, AFM images revealed that the large admicelles were formed on MPS NPs due to PVP, and the height of the aggregates was 64 nm, 5.3 times as much as that of the aggregates on the PS microsphere. For CTAB-modified MPS NPs, the height of the aggregates increased to 99.9 nm. Through CTAB modification, the specific surface area of the MPS NPs notably reduced from 2.36 to 1.06 m 2 g −1 , which indirectly verified that bigger CTAB admicelles were formed. Cation–π electron interaction enabled phenanthrene to be adsolubilized in CTAB admicelles on MPS NPs. The equilibrium adsorption capacity of the CTAB-modified MPS NPs for phenanthrene was 24.3 mg g −1 , which was 1.7, 2.1, and 6.0 times higher than the amount of the MPS NPs, CTAB-modified and original PS microspheres, respectively.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Advanced Materials Interfaces
·
2021
·Vol. 8
·期 19
·2100588
·
IF 6.147
Jie Guan,Ying-zhuo Shen,Yun Shu,Dangqin Jin,Qin Xu,Xiao-Ya Hu
The high photoluminescence quantum yield (PLQY) of perovskite nanocrystals (PNCs) makes them promising candidates in optoelectronics. However, the easy loss of structural integrity and fast chemical degradation upon exposure to moisture influence their reliable applications in aqueous solutions. Here, a hierarchical surface construction strategy is rationally designed to fulfill an internal–external stabilization of PNCs. Carbon quantum dots (CQDs) and cetyltrimethyl ammonium bromide (CTAB) have been demonstrated stabilized PNCs internally by eliminating the proton transfer-induced ligand desorption. Meanwhile, CTAB acts as a cationic surfactant in consolidating the subsequent SiO 2 coating to prevent the PNCs from external environments. Based on the resulted PNCs, a sensitive and selective fluorescence film sensor for Fe 3+ detection is successfully constructed. The fluorescence of PNCs at 525 nm is quenched after the addition of Fe 3+ in the concentration range from 770 p m to 411 µ m . As Fe 3+ ions attached to the surface of the film are removed with water, the fluorescence of the film can be easily recovered. Owing to this character, the application of the PNCs toward the confidential information encryption has been proved. This work provides an effective design strategy to improve the stability of PNCs and extends their applications in sensing and encryption areas.
研究领域:
材料科学
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分析化学
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光学
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DOI
高影响因子
JOURNAL OF FOOD PROCESS ENGINEERING
·
2026
·Vol. 49
·期 1
·e70351
·
IF 2.9
Kai Chen,JianZhi Luo,Bin Xiao,XueWei Yuan,Juan Zhang,Nan Wang,LiQiang Liu,AiKe Li,Ailiang Chen
This study established an optimized CTAB-based DNA extraction method for edible oils, which enables stable and reliable DNA recovery from commercially available edible oils for authenticity identification and adulteration detection. Real-time PCR was used to assess DNA precipitation time and organic solvent extraction, revealing that longer precipitation increased inhibitors, hindering PCR amplification, while organic solvents enhanced efficiency. The method was applied to detect adulteration in commercially available soybean and olive oils. A standard curve based on real-time PCR Ct values demonstrated the ability to detect as low as 10% soybean oil in olive oil, with recovery rates of 92% and 80% for samples spiked with 70% and 30% soybean oil, respectively. The coefficients of variation (CV) were 11% and 14%, within acceptable ranges. This reliable method provides a valuable tool for edible oil authentication and adulteration detection.
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DOI
高影响因子
IONICS
·
2026
·
IF 2.6
Sun Zhiyuan,Chang Chengshuai,Zhang Wan,Zhang Yunqiang,Jing Laiying,Zheng Qiuju,Xiao Hong,Li Mei,Zhang Yanfei
Lithium-sulfur batteries (LSBs) have garnered significant attention due to their high theoretical energy density and low cost. However, the shuttle effect of polysulfides and the low conductivity of the sulfur cathode severely limit their practical application. To address these challenges, a porous carbon framework embedded with cobalt nanoparticles (Co-SPC-CTAB) is successfully prepared by calcining zeolitic imidazolate framework-67 (ZIF-67)/polypyrrole Schiff base polymer under the regulation of cetyltrimethylammonium bromide (CTAB), and it is used as the interlayer material for LSBs. The metal Co derived from ZIF-67 provides abundant adsorption-catalytic active sites, effectively facilitating the adsorption and conversion of lithium polysulfides (LiPSs). In addition, CTAB not only optimizes the pore structure of the carbon skeleton to furnish abundant channels for Li + transport and electrolyte infiltration, but also helps to improve the graphitization degree of the porous carbon framework, thereby further enhancing the electrochemical energy storage kinetics of LSBs. When Co-SPC-CTAB is utilized as the interlayer material, the assembled LSBs can achieve an initial specific capacity of 1063.6 mAh g − 1 at 1 C and still retain 659.5 mAh g − 1 after 500 cycles, with a capacity decay rate of only 0.076% per cycle. Under low-temperature conditions (-10 °C), the battery can exhibit a high initial specific capacity of 931.6 mAh g − 1 at 0.2 C and remain at 724.8 mAh g − 1 after 100 cycles. This study provides a novel strategy for the rational design of transition metal-carbon composite interlayer materials, advancing the development of high-stability LSBs.
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2021
·
IF 5.455
Qing Zhang,Yi Zhai,Fumin Wang,Xubin Zhang,Guojun Lv,Yongkui Liu,Mengyue Li,Mengyao Li
Hierarchical Fe-doped MFI/MCM-41 composites (Fe-HMZs) were one-pot hydrothermal synthesized by partial transformation strategy using conventional CTAB as a dual-functional template. The hierarchical Fe-doped MFI/MCM-41 composites possess ordered mesopores and crystallized MFI structure. The effect of addition amount of NaOH and CTAB as well as the type of the alkali source on the formation of hierarchical Fe-MFI/MCM-41 composites have been investigated in detail. In addition, the temperature-gradient treatment plays the vital roles in the formation of MFI and the possible formation mechanism has been proposed. The obtained hierarchical Fe-HMZ-40 sample exhibits outstanding catalytic performance for phenol hydroxylation and 48% of phenol conversion as well as 89% of dihydroxybenzene selectivity could be achieved, which are ascribed to the more accessible active sites endowed by the significant diffusion ability of ordered mesopores. Compared with Fe-MCM-41 sample, the hydrothermal stability is improved because of the presence of MFI structure.
研究领域:
材料科学
·
催化化学
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 84
·68668-68675
·
IF 3.84
Yanting Liu,Jun Zhou,Xiaocong Yuan,Tao Jiang,Lucia Petti,Lu Zhou,Pasquale Mormile
Several polyhedral gold nanocrystals (Au NCs) whose geometric morphology belongs to the Platonic solid and Archimedean solid groups are synthesized by modulating the cetyltrimethylammonium bromide (CTAB) concentration in the designed hydrothermal processes. The mechanism of growth of these polyhedral Au NCs is revealed via crystallographic analyses, which suggest that their morphologies mainly depend on the diminishing of the surface energy of the specific facets in the CTAB-directive shape-control process. Furthermore, the localized surface plasmon resonance (LSPR) properties of the as-prepared polyhedral Au NCs are numerically assessed using the finite element method (FEM). The calculations show that these polyhedral Au NCs exhibit geometry-dependence plasmonic properties: specifically, the enormous local field enhancements occur around their vertices and corners. The SERS spectra of 4-mercaptobenzoic acid molecules adsorbed on these polyhedral Au NCs display superior SERS activity with an enhancement factor of 105 to 106 at the excitation wavelength of 785 nm. Particularly, the truncated tetrahedron and bitetrahedron show higher SERS enhancement factors due to their LSPR being closer to the excitation wavelength of 785 nm. Thus, the facile surfactant-assisted synthesis offers the opportunity to design and optimize the shape-dependent SERS activity of polyhedral Au NCs with respect to possible applications in bio-sensing and imaging.
研究领域:
纳米材料科学
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光学
·
化学
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DOI
高影响因子
IEEE SENSORS JOURNAL
·
2024
·Vol. 24
·期 24
·40710-40716
·
IF 4.3
Jiao Ren,Xiaoxue Xu,Pengpeng Xie,Guiqiang Wang
An improved weak measurement scheme, a weak measurement sensor with a mesoporous silica film (MSF) structure, was first proposed. A simple Stöber solution growth method was used to prepare MSF with a large surface area and high stability, which can be utilized to their mesoporous advantage during adsorption detection. The MSF-based weak measurement sensor achieved a sensitivity of 1418.8 nm/RIU and a refractive index resolution of
$2.56\times 10^{-6}$
RIU. A detection limit of 53 mg/L was recorded for nonadsorbed glucose detection. In the detection of hexadecyl trimethyl ammonium bromide (CTAB), which could be physically adsorbed within the mesoporous thin-film layer, the limit of detection was significantly reduced to 12.6 nM. Heavy metal copper ions could be captured by the carboxyl complex of the MSF mesoporous layer, and a detection limit of 24.4 nM was obtained. The detection of small molecules and heavy metal ions demonstrates the high performance and great potential of MSF-based weak measurement sensors and it might be used as a versatile platform for high-sensitivity label-free optical biosensing.
研究领域:
材料科学
·
光学传感
·
生物医学工程
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产品关联
DOI
高影响因子
Analytical Methods
·
2021
·Vol. 13
·期 8
·1049-1057
·
IF 2.896
Xiang-Ru Bai,Lei Zhang,Jia-Qiang Ren,Ai-Guo Shen,Ji-Ming Hu
For the first time, we present an original sensing strategy with an ultra-wide detection window from 17 nM to 20 mM to detect SCN− ions. Initially, we investigated the clustering and optical properties of noble metal sol nanoparticles (NPs) due to the competitive interaction of thiocyanate ions (SCN−) and cetyltrimethylammonium bromide (CTAB) under weak acidic conditions, and found that different dimensions and scales of nanoclusters containing the alkyne-embedded Au@Ag NPs and relatively small Ag NPs could be achieved by the mediation of CTAB through electrostatic forces and hydrophobic interaction, in which SCN− could be covalently bonded with the silver surface of NPs to form a compact molecular layer (–Ag–S–CN), and CTAB could only occupy remaining sites. In this process, we found that SCN− always runs counter to CTAB and tends to dissolve nanoclusters, so that they occupy the exposed surface of NPs in nanoclusters rather than the binding sites of one another. Remarkably, when the concentration of SCN− initially increased, two highly recognizable SERS emissions, which were assigned to alkyne reporter molecules (2208 cm−1) and CN of SCN− (2110 cm−1), respectively, were rapidly detected, and their ratios (I2110/I2208) increased linearly proportional to the concentration of SCN− over a range of 17 nM to 172 μM, with a limit of detection (LOD) of 10 nM. With the further increase of SCN−, small Ag NPs started to desorb from the surface of individual Au@Ag NPs and dissociated in the solution but did not contribute to SERS signals. Instead, the surface plasmon resonance (SPR) peak of pure silver NPs at 385 nm increased gradually in the range from 0.5 to 20 mM with an LOD of 0.2 mM. Of particular significance, this simple sensor in conjunction with surface-enhanced Raman-extinction spectroscopy can be used for the rapid detection of extensive samples with an ultra-wide detection window, such as body fluids (saliva, urine, and serum) and food (milk powder and brassica vegetables), which is far superior to that of ion chromatography (IC).
研究领域:
分析化学
·
生物医学
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DOI
高影响因子
危险品化学品经营许可证（带存储）