ENERGY
·
2026
·
IF 10.1
Xuehui Zhou,Kejia Xu,Peng Zhang,Chenwei Liu,Daiming Liu,Guodong Zhang,Fei Wang,Xiaolin Wang
Hydrogen is crucial for advancing human society towards a zero-carbon future, but its storage remains a core challenge for practical application. While hydrate-based solidified hydrogen offers a promising strategy for mild hydrogen storage, the poor hydration efficiency of hydrogen-containing hydrates hinders commercialization. To address this, a novel nanopromoter of PSNS-g-CTAB (CTAB grafted on polystyrene nanospheres) was prepared, and a composite promotion system of DIOX/PSNS-g-CTAB was proposed to enhance hydrate growth kinetics, and its performance on improving the three key metrics of hydration efficiency was evaluated. Remarkably, the addition of a small amount of PSNS-g-CTAB (1 mmol/L) significantly enhance hydration efficiency: hydrate induction time decreased from 443.2 ± 280 min to 47.6 ± 46.3 min, hydrogen storage capacity and hydrate growth rate increased up to 0.447 ± 0.111 wt% and 0.057 mmol/min/mL, with an improvement of 54.1% and 35.7% separately, and the fast hydrate growth reduced T90 by 73.5%. The competitiveness of this promotion system was assessed, revealing unique advantages over previously reported promoters. Hydrate microstructure and crystallization were investigated via Raman spectroscopy and in-situ differential scanning calorimetry (μ-DSC), respectively. Results indicate hydrate cages' multiple occupy and composite hydrate structures, suggesting PSNS-g-CTAB's promotion on interfacial crystallization, and a hydrate formation pattern of interfacial “re-orientation–encapsulation–granulation–accumulation' was proposed.
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DOI
高影响因子
PHYSICA SCRIPTA
·
2024
·Vol. 100
·期 1
·015024
·
IF 2.6
Tingfei Chen,Yanzhi Huang,Xiaojun Liu,Chunnan Zhu,Chao Liu,Dongyun Zheng
The accurate and rapid detection of catechol which is a class of highly toxic organic phenolic compounds, is of great importance for the protection of environment and human health. In this work, a novel electrochemical sensor for catechol was constructed by modifying multi-walled carbon nanotube paste microelectrode with a cationic surfactant of cetyltrimethylammonium bromide (CTAB) through a simple and controllable adsorption method. Electrochemical experiment results show that the modified electrode has good sensitization effect to the electrochemical response of catechol. The electrochemical response mechanism of the sensor to catechol were investigated through using many analytical methods, including scanning electron microscopy, energy-dispersive spectroscopy, Fourier-transform infrared spectroscopy, Raman spectroscopy, and electrochemical techniques. Under the optimal fabrication and application conditions, the response current of catechol on the sensor exhibits a good linear relationship with its concentration from 1.0 μmol l−1 ∼ 7.0 mmol l−1 with a sensitivity of 1.33 nA/(μmol l−1) and a low detection limit of 15 nmol l−1 (S/N = 3). Applying the sensor in the detection of catechol in tap water samples and urine samples, the results were satisfactory, indicating its good application prospect.
研究领域:
环境科学
·
分析化学
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JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Chen Lan,Zhang Xi-Hao,Ito Hironori,Deng Tian-Song
Gold nanobipyramids (AuNBPs) possess sharp tips and highly tunable near-infrared localized surface plasmon resonance (LSPR) modes, making them attractive building blocks for plasmonic superstructures. However, achieving controllable and stable one-dimensional (1D) self-assembly in aqueous phase remains challenging. Here, we present an interface-mediated strategy in which CTAB regulates tip accessibility, while 4,4′-bipyridine (4,4′-BPy) participates in coordination-assisted interactions that modulate the assembly pathway and bias AuNBPs toward end-to-end configurations. Controlled CTAB desorption selectively exposes the {111} tip sites, enabling ligand-assisted interactions that favor anisotropic chain growth. Subsequent CTAB re-passivation enables kinetic stabilization of the assemblies, allowing chain elongation to be terminated at selected stages and yielding plasmonic nanochains with good long-term structural stability. Together, this synergistic combination of interfacial regulation, coordination-assisted interactions, and kinetic stabilization provides a versatile framework for constructing stable near-infrared plasmonic architectures and offers general design principles for manipulating collective optical modes in anisotropic nanostructure assemblies.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Weimin Zhang,Wenming Hao,Yanni Guo,Jinghong Ma,Ruifeng Li
Even though cetyltrimethylammonium bromide (CTAB) has been successfully used in the surfactant-templating system to create the mesostructured zeolites , the formation mechanism of the pore structure still remains elusive. Here, we investigated the sol-gel and structure evolution in the hierarchical zeolite Beta synthesis focusing on the role of CTAB in a dual templating system. It is found that the induction period was prolonged and the Ostwald ripening was retarded by the presence of CTAB in crystallization . CTAB was involved in the synthesis and incorporated within the solid phase at the first stage when mesopores were formed. However, the incorporated CTAB was released later into the solution when the crystallized microporous structure was developed. The thermogravimetric analysis revealed that CTA + cation worked both as structure directing agent (SDA) for micropores and mesoporogen for the secondary lager pores in the matrix of hierarchical zeolite Beta. Moreover, CTA + competed with tetraethylammonium cation (TEA + ) to work as the SDA for micropores, with a decrease of the total amount of CTA + and TEA + when the concentration of CTAB in the synthesis solution was increased. It is anticipated that the understanding of the role of CTAB in the sol-gel and structure evolution in the hierarchical zeolite Beta synthesis process can provide a basis for designing the synthesis of hierarchical zeolites.
研究领域:
化学工程
·
材料科学
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Junmei Fan,Ruitao Zhu,Wei Han,Hongfei Han,Liping Ding
Flavonoids are a kind of natural polyphenols which are closely related to human health, and the identification of flavonoids with similar structures is an important but difficult issue. We herein easily constructed a powerful fluorescent sensor ensemble by using surfactant cetyltrimethylammoniumbromide (CTAB) encapsulating two commercially available fluorescent probes ( F1 and F2 ) with multi-wavelength emission. Fluorescence measurements illustrate the present sensor ensemble exhibits turn-off responses to flavones and flavonols but ratiometric responses to isoflavones, owing to different FRET processes. The heat map and linear discriminant analysis (LDA) results show that this single sensor can effectively distinguish 6 flavonoids belong to three subgroups by collecting the fluorescence variation at four typical wavelengths. Moreover, it can be applied to identify different flavonoids even in biofluids like serum and urine, providing potential practical application.
研究领域:
分析化学
·
生物医学
·
分子生物学
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DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Jing Zhang,Xiaojian Xu,Lu Chen
This work constructed an ultrasensitive electrochemical bisphenol A (BPA) sensor using hierarchical Ce-metal-organic framework (Ce-MOF) modified with cetyltrimethylammonium bromide (CTAB) as a sensing platform. Ce-MOF had been successfully prepared and conveniently modified with a cationic surfactant (CTAB) via the electrostatic interaction. Ce-MOF and CTAB/Ce-MOF were characterized by scanning electron microscopy, X-ray diffraction, infrared spectrum, thermogravimetric analysis and zeta potentials analysis. CTAB/Ce-MOF suspension was dropped onto glassy carbon electrode (GCE) surface to fabricate CTAB/Ce-MOF/GCE. Combined with preconcentration of BPA of the long alkane chain in CTAB via hydrophobic interaction and electrocatalytic activity of Ce-MOF, the dual amplification made CTAB/Ce-MOF/GCE exhibit high electrochemical response toward the oxidation of BPA, and an electrochemical BPA sensor was constructed based on CTAB/Ce-MOF/GCE by differential pulse voltammetry. The designed BPA sensor had a wide linear range from 0.005 to 50 μmol L −1 and a low detection limit of 2.0 nmol L −1 (S/N = 3). The proposed sensor had excellent reproducibility, stability and anti-interference, and was successfully employed for BPA detection in real samples. This convenient and sensitive sensor proved to be a promising and reliable tool for detecting BPA in food and environmental pollution.
研究领域:
环境科学
·
分析化学
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JOURNAL OF SURFACTANTS AND DETERGENTS
·
2018
·Vol. 22
·期 2
·189-196
·
IF 1.454
Han Jia,Pan Huang,Hongyan Wu,An Ma,Hongtao Zhou
It is an urgent issue to enhance oil recovery for unconventional reservoirs with high salinity. Focused on this topic, salt addition is a powerful tool to motivate the surfactant assembly at the water/oil interface and improve the interfacial activity. We used a cationic surfactant cetyltrimethylammonium bromide (CTAB) and an anionic salt dicarboxylic acid sodium (CnDNa) to construct gemini-like surfactants at the interface and evaluated their ability to reduce the interfacial tension (IFT) between model oil (toluene and n-decane, v:v = 1:1) and water. Interestingly, the fabrication of a (CTAB) 2 /C4DNa gemini-like surfactant was hardly achieved at the fresh water/model oil interface, but accomplished at the brine/model oil interface. At a high NaCl concentration (100,000 mg L −1 ), the IFT value is reduced to 10 −3 mN m −1 order of magnitude, which is generally desired in practical applications. The control experiments displacing the surfactant type and the spacer length further confirmed the NaCl effects on the interfacial assembly.
研究领域:
石油工程
·
界面化学
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JOURNAL OF FOOD ENGINEERING
·
2022
·
IF 6.203
Yihang Zhang,Jing Guo,Fucheng Guan,Jun Tian,Zheng Li,Sen Zhang,Miao Zhao
The preparation of nanofibers by electrospinning of food gum has been a challenge. Here, we reported a strategy for preparing narrow nanofibers by reducing the surface tension and enhancing the conductivity of “low concentration and high viscosity” food gum solution. The addition of cetyl trimethyl ammonium bromide (CTAB) improved the spinnability of guar gum (GG), propylene glycol alginate (PGA), and Gleditsia Sinensis lam gum (GSLG) solutions, allowing them to form Taylor cones during electrospinning, while volume shrinkage was activated with a higher solvent evaporation rate to reduce fiber diameter. Besides, based on fiber diameter, solution properties, and electrospinning setting, we proposed a kinetic model of fiber diameter. Scanning electron microscopy (SEM) showed that the average diameters of the fibers were 110, 90, and 100 nm for GG/CTAB, PGA/CTAB, and GSLG/CTAB, respectively. Correspondingly, the theoretical diameters of the kinetic models were 117.4, 102.4, and 109.6 nm, respectively, verifying the accuracy of the kinetic model.
研究领域:
食品科学
·
材料科学
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JOURNAL OF MATERIALS SCIENCE
·
2013
·Vol. 48
·期 17
·5718-5726
·
IF 2.163
Han Linbo,Zhou Ying,He Ting,Song Guosheng,Wu Fan,Jiang Feiran,Hu Junqing
A simple synthetic method has been developed for synthesis of mesoporous silica nanoparticles with versatile morphologies by adopting CTAB and C 12 –OH as dual soft templates. In such a simple method, only by regulating the dose of C 12 –OH and temperature, we can well-realize the silica nanoparticle morphological transformation from sphere to shell-like, rugby-like, peanut-like, hollow, and complex yolk–shell structures. These as-fabricated silica nanoparticles were characterized by scanning electron microscopy, transmission electron microscopy, Brunauer–Emmett–Teller (BET), and small-angle powder X-ray diffraction. The as-prepared mesoporous silica nanoparticles with versatile morphologies possessing varying BET surface areas, pore diameter, and pore distributions have some potential applications in separation, sensing, and heterogeneous catalysis.
研究领域:
材料科学
·
纳米技术
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高影响因子
FUEL
·
2023
·
IF 7.4
Jie Tuo,Jilong Wang,Xianchen Gong,Chengwei Zhai,Hao Xu,Teng Xue,Jingang Jiang,Yejun Guan,Peng Wu
Enriching Al atoms in T2 and T4 sites of FER zeolite is decisive for achieving high catalytic activity in the carbonylation reaction of dimethyl ether (DME). Regulating the spatial position of Al atoms in targeted framework sites remains to be a great challenge during the synthesis of FER zeolite. The FER nanosheets with preferential Al-sitting in T2 and T4 sites were successfully synthesized with the assistance of cetyltrimethylammonium bromide (CTAB). The effect of CTAB on the morphology and Al distribution has been investigated in detail. CTAB mostly adsorbed on external surface serving as growth inhibitors, which resulted in nanosheet morphology and changed the length ratio along the b -axis to c -axis of the crystals. A minor portion of CTAB located in the channels may favor the spatial Al location in T2 and T4 sites, indicated by the results from 27 Al MAS NMR spectra. The FER nanosheets exhibited improved DME conversion, stability, space–time yield (STY), and lifetime compared to conventional FER in DME carbonylation reaction.
研究领域:
催化化学
·
材料科学
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高影响因子
TRANSACTIONS OF TIANJIN UNIVERSITY
·
2017
·Vol. 24
·期 1
·16-24
·
IF 0
Sun Jinsheng,Wei Dongmei,Lv Hao
This study focuses on shape-controlled synthesis of gold nanoparticles, using the green reducing agent l -Tryptophan ( l -Trp), which is non-toxic and eco-friendly. This specific agent was investigated to realize certain morphology controlling effects by changing the relative growth rates among various crystal planes. Experimental samples were characterized by transmission electron microscope, UV–Vis spectrophotometer and X-ray diffraction (XRD) for size and morphological information. The effects of the specific additives of PVP ((C 6 H 9 NO)
n
), CTAB (C 16 H 33 (CH 3 ) 3 NBr), and KBr were examined for their morphological control individually and synergistically in this system. Hexagonal gold nanoparticles were successfully obtained via the PVP/CTAB and PVP/KBr systems. Particular amounts of PVP/KBr produced various polyhedron structures, such as cubes, and others with triangular and rhombic straight-side cross sections.
研究领域:
材料科学
·
纳米生物学
·
环境科学
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ANALYST
·
2018
·Vol. 143
·期 19
·4630-4637
·
IF 3.864
Guolan Tian,Lan Chen,Renxiao Liu,Guanglu Ge
Quantitative analysis using surfactant–particles interaction is the basis for many applications. In situ measurements of surfactant adsorption on nanoparticles are important to understanding adsorption kinetics. However, it is quite difficult to determine the individual numbers for each monomodal particles in a multimodal mixture system by current technologies. To cope with this problem, a new method, i.e. 2D differential centrifugal sedimentation (2D-DCS), has been developed and applied in situ to measure the number of CTAB molecules adsorbed on the surface of silica particles, assuming that the adlayer is composed of a compact CTAB monolayer. Results show that 2D-DCS can measure the adsorption amount for particles not only with single size distribution but also with multiple size distributions. The number of adsorbed CTAB per nm2 on silica particles determined by 2D-DCS are 1.4 and 3.9 for the monomodal particles of 210 and 1000 nm, respectively, which is similar to that measured by ζ-potential, DLS and UV-vis spectrometry, and 1.4, 2.3 and 2.5 for 210, 430 and 700 nm particles, respectively, for a trimodal particle system, where the size-dependent adsorption is difficult to be simultaneously measured by other technologies.
研究领域:
化学
·
材料科学
·
分析化学
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PubMed
高影响因子
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