Advanced Materials Interfaces
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2023
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IF 5.4
Bingxuan Du,Haichao Li,Conglin Zhang,Qingsong Ji
Carbon nanomaterials have attracted much attention in the field of science and technology for their excellent properties; however, developing a simple, environmentally friendly, and versatile synthesis strategy for the preparation of carbon nanomaterials with novel structures remains a great challenge. Herein, a surfactant @ salt (dodecyltrimethylammonium bromide DTAB @ NaCl) self-assembly strategy for the synthesis of carbon nanomaterials with novel structures, i.e., carbon nanoframes is reported. The synthesis differs from the traditional template method in that it is characterized by the introduction of surfactants for separation and protection, and the salt can be recycled. In addition, the carbon frame size in this system can be adjusted on demand by simply adjusting the concentration of surfactant, thus realizing that the carbon nanoframe size is adjustable in the range of 232.58–322.51 nm. Impressively, the carbon nanoframe has purple, blue, and green PL emission behavior. It is anticipated that this research will provide new insights into the development of novel carbon nanomaterials.
研究领域:
材料科学
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化学工程
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纳米技术
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DOI
高影响因子
International Journal of Minerals Metallurgy and Materials
·
2021
·Vol. 29
·期 3
·446-454
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IF 2.232
Liu Wenbiao,Huang Wenxuan,Rao Feng,Zhu Zhanglei,Zheng Yongming,Wen Shuming
Reverse flotation desilication is an indispensable step for obtaining high-grade fluorapatite. In this work, dodecyltrimethylammonium bromide (DTAB) is recommended as an efficient collector for the reverse flotation separation of quartz from fluorapatite. Its collectivity for quartz and selectivity for fluorapatite were also compared with figures corresponding to the conventional collector dodecylamine hydrochloride (DAC) via microflotation experiments. The adsorption behaviors of DTAB and DAC on minerals were systematically investigated with surface chemical analyses, such as contact angle determination, zeta potential detection, and adsorption density measurement. The results revealed that compared to DAC, DTAB displayed a similar and strong collectivity for quartz, and it showed a better selectivity (or worse collectivity) for fluorapatite, resulting in a high-efficiency separation of the two minerals. The surface chemical analysis results showed that the adsorption ability of DTAB on the quartz surface was as strong as that of DAC, whereas the adsorption amount of DTAB on the fluorapatite surface was much lower than that of DAC, which is associated with the flotation performance. During the floatation separation of the actual ore, 8wt% fluorapatite with a higher grade can be obtained using DTAB in contrast to DAC. Therefore, DTAB is a promising collector for the high-efficiency purification and sustainable utilization of valuable fluorapatite recourses.
研究领域:
矿物加工工程
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化学工程
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DOI
高影响因子
TENSIDE SURFACTANTS DETERGENTS
·
2023
·Vol. 60
·期 3
·245-252
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IF 1
Ying Li,Yifan Zhang,Lewu Zhan,Jing Hou,Bindong Li
The effects of different surfactants on the morphology of 1,3,5-trinitro-1,3,5-triazinane (RDX) micro-nanoparticles prepared by solvent/non-solvent method in a microfluidic reactor were investigated. Alkyl polyglycoside (APG), sodium dodecyl sulphate (SDS) and dodecyltrimethylammonium bromide (DTAB) were selected as non-solvents. The surface tension and interfacial tension (IFT) properties of SDS, APG and DTAB were investigated. Compared to DTAB and SDS, the APG could effectively reduce the interfacial tension to 10 −2 mN/m and exhibited better surface tension. The RDX prepared with different surfactants were analysed by scanning electron microscopy (SEM), X-ray diffractometry (XRD) and Fourier transform infrared spectrometry (FTIR). The results showed that the different surfactants could significantly improve the dispersion effect of RDX and the crystal morphology was uniform and stable.
研究领域:
化学工程
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材料科学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Yonggan Ju,Jingxian Hua,Yawei Gu,Hongling Chen
Foams can be seen everywhere in human production and life. An uncontrolled foam event usually leads to product losses, equipment damage, and clean-up costs. Defoamer is one of the most effective strategies to eliminate or inhibit foam activities, which has been proved by long-term practices. In this work, we report new molecular defoamers with high-branched structure, which adopts melamine molecule as the parent structure, by incorporating alkyl-isocyanates with different chain lengths into the high-branched melamine derivatives (Hb-MDs) formula to replace the R − NH 2 (primary ammonia) on melamine structure. The substitution reaction processes can be readily tuned by varying the molar ratio or alkyl chain length of alkyl-isocyanate, enabling a facile control over the branched degree. The foam tests reveal that the high-branched melamine molecule defoamers exhibited excellent defoaming and anti-foaming properties for four typical foam systems, including an anionic SDBS , cationic DTAB , non-ionic AEO-9, and white cat (BM) detergent, with efficiency close to that of silicone-type LN1414 defoamer and far superior to that of high-carbon alcohol XS-02 defoamer, at the same addition level. Notably, the defoaming or anti-foaming performances of the high-branched melamine molecule defoamers were not always monotonically increased with the branched degree or hydrophobic chain length, but a suitable range needed to be maintained to support a good balance of defoamer structure with foam liquid films . Therefore, it is anticipated that this high-branched design principle could open a new avenue for the construction of molecular defoamers for complex industrial problems.
研究领域:
化学工程
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材料科学
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表面化学
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DOI
PubMed
高影响因子
ENERGY & FUELS
·
2022
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IF 4.654
Xiaohan Wang,Zhiqing Yu,Jinxiao Sun,Qiang Wei,Haoran Liu,Wenbin Huang,Luyuan Zhao,Meng Si,Yasong Zhou
A series of in situ dodecyl trimethyl ammonium bromide (DTAB)-modified small-crystal Y zeolites have been successfully synthesized by DTAB addition to the seed synthesis procedure, which was used to create the small crystal size Y zeolites. Compared to the Y zeolites prepared without DTAB, the Y zeolites prepared with DTAB have a uniform morphology and mesoporous structure, a larger specific surface area (up to 32.3 m2 g–1 increase), a smaller crystal size (up to 66 nm reduction), and more Brönsted acid sites (up to 55 μmol/g increase). After loading with NiW, the corresponding NiW catalysts were utilized in the hydrocracking of n-hexadecane. It is evident from the catalytic performance that the catalysts containing DTAB-modified small-crystal zeolites have a higher yield and selectivity of primary cracking products compared with the Y zeolites without DTAB modification. Moreover, the conversion of n-hexadecane is also higher due to its low mass-transfer resistance, high dispersion, and sulfation of W species. When the molar ratio of DTAB/Al2O3 is 0.15, the corresponding catalyst has the optimum balance between cracking and hydro–dehydrogenation activity. Therefore, it has the most excellent catalytic performance and a 7.3% increase in C8–C12 yield.
研究领域:
催化材料
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石油化学工程
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DOI
高影响因子
ACS Omega
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2022
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IF 4.132
Danhua Xie,Yulong Jiang,Kangling Li,Xinyue Yang,Yunjin Zhang
The morphology of nanoparticles plays a significant role in the properties and applications of Pickering emulsions. Oil-in-water (O/W) Pickering emulsions were prepared using spherical, rod-like, and thread-like mesoporous silica nanoparticles (MSNPs) in combination with the cationic surfactant dodecyltrimethylammonium bromide (DTAB) as a stabilizer. The effects of nanoparticle morphology on the stability and stimuli-responsive properties of Pickering emulsions were investigated. For spherical and rod-like MSNP systems, stable Pickering emulsions were obtained at DTAB concentrations above 0.2 mmol·L–1. Stable Pickering emulsions containing thread-like MSNPs were produced at lower DTAB concentrations of approximately 0.1 mmol·L–1. The droplets with thread-like MSNPs were extremely large with an average diameter around 700 μm at DTAB concentrations of 0.1–0.3 mmol·L–1, which were approximately 20 times larger than those of conventional droplets. Scanning electron microscopy (SEM) images showed that all three types of MSNPs were located at the O/W interfaces. Irrespective of the morphology of the MSNPs, all the stable Pickering emulsions retained their original appearance for more than 6 months. By adding NaOH and HCl alternatively, the Pickering emulsions containing spherical and rod-like MSNPs could be switched between unstable and stable states more than 60 times. The Pickering emulsions containing thread-like MSNPs, by contrast, could have their droplet size switched between large and small more than 10 times without any obvious phase separation. The high anisotropy of thread-like MSNPs contributed to the low interface curvature of the droplets. This study revealed the relationship between the morphology of MSNPs and the characteristics of Pickering emulsions. These results enrich our knowledge about the formulation of Pickering emulsions and expand their applications.
研究领域:
材料科学
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界面化学
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胶体科学
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DOI
PubMed
高影响因子
Soft Matter
·
2017
·Vol. 13
·期 35
·5888-5896
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IF 3.889
Handi Yin,Peizhu Zheng,Jihua Zhao,Weiguo Shen
The heats of mixing for a series of DTAB/TX100 mixed surfactant aqueous solutions were measured by flow-mixing calorimetry and isothermal titration calorimetry (ITC) at 298.15 K and 85 kPa, which were used to calculate the inter-micellar interaction enthalpies (−ΔHC). The signs of −ΔHC for pure DTAB and TX100 micellar systems were contrary to the inter-micellar interaction parameters reported for the same systems in the literature, suggesting that these interaction parameters might have a Gibbs free energy character dominated by entropy changes. It was found that the inter-micellar interaction enthalpies varied with the total surfactant concentration and the mixed ratio of the two surfactants, and characterized different structures of the mixed micelles. These phenomena were discussed based on the effects of structural water around the micellar interface, the hydration of counterions, and the repulsive Coulombic interaction.
研究领域:
物理化学
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胶体与界面科学
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DOI
PubMed
高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
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2024
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IF 2.1
Bo Meng,Haichao Li,Menglan Hu
Morphologies play an important role in carbon nanomaterials. Carbon nanomaterials with different morphologies have different applications in different fields. However, carbon nano-polyhedra have been rarely reported in literatures. Nano-carbon octadecahedron were prepared by the interaction of DTAB of aggregates with a concentrated solution of calcium chloride at 600 °C and with a size of about 700 nm. A series of characterizations, such as SEM, FT-IR, XPS, XRD, Raman, etc., proved that it conforms to the basic characteristics of carbon nanomaterials and may be doped with Ca and carbon. Successful preparation of carbon octadecahedron suggests that the use of in situ carbonization in a concentrated salt system is a new and worthwhile approach to explore.
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2024
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IF 5.3
Jian-gen Xu,Liang Wang,Xueying Lyu,Meng Li,Kanhua Su,Sihang Li
Wellbore instability issue is a common occurrence in the development of clean energy sources such as shale gas. Low-melting mixture solvents (LoMMSs), as a novel and environmentally friendly liquids material, are anticipated to be utilized to address this issue. In this work, a novel shale inhibitor (LoMMSs-2) was formulated through introducing a cationic surfactant with a long hydrophobic chain, dodecyl trimethyl ammonium bromide (DTAB), into a commonly used choline chloride/glycerol LoMMSs. Inhibition assessment results indicated that the swelling height of bentonite in LoMMSs-2 solutions decreased by 53.46 %, and shale recovery rate reached as high as 89.51 %, demonstrating superior hydration inhibition compared to commercial inhibitors. The mechanism for inhibiting hydration in LoMMSs-2 was explored through tests involving zeta potential, particle size, interlayer spacing, shale wettability, and surface tension, etc. The findings revealed that choline cations and quaternary ammonium cations in LoMMSs-2 could tightly adsorb to the clay surface. The exposed long alkyl chains made the rock more hydrophobic, increasing the water contact angle from 22.49° to 65.26°. Subsequently, more interlayers water in the clay was expelled, leading to a significant reduction in adsorbed water. Additionally, the lower surface tension and stronger hydrophobicity corresponded to a smaller capillary force, further minimizing water infiltration into shale. Therefore, introducing hydrophobic groups into LoMMSs was a promising approach for developing efficient shale inhibitors to address wellbore instability issue in shale gas drilling.
研究领域:
石油工程
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钻井液
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页岩气开发
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胶体与界面科学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Xueru Zhao,Shengti Cao,Chuangxin Ji,Yueqing Huo,Chunxin Gao,Xiaochen Liu
Mixed C 1214 E 9 P 3 S/DTAB systems show pronounced synergistic surface activity. • The lowest CMC and highest activity occur at a molar ratio of 3:7. • Attractive interactions dominate micellization in the mixed system. Surfactants are widely used in detergency, emulsification, and a variety of interfacial processes, and mixed ionic surfactant systems have recently attracted considerable attention due to their tunable self-assembly and interfacial properties that are not accessible in single-component systems. However, a detailed understanding of synergistic interactions and structure–property relationships in anionic–cationic mixed systems remains incomplete. Here, we investigate aqueous mixtures of sodium alcohol polyoxyethylene polyoxypropylene ether sulfate (C 1214 E 9 P 3 S) and dodecyl trimethyl ammonium bromide (DTAB) at constant total concentration and varying molar ratios. Static and dynamic surface tension, zeta potential, and foaming properties were systematically measured, and the interfacial behavior was analyzed using Rubingh’s regular solution theory and thermodynamic analysis. The mixed systems exhibit substantially lower critical micelle concentration (CMC) and surface tension at CMC than the corresponding single surfactants, indicating pronounced synergistic effects in adsorption and self-assembly. The strongest interfacial activity is observed at a C 1214 E 9 P 3 S:DTAB molar ratio of 3:7, where the CMC reaches a minimum and surface activity is maximized. Negative interaction parameters derived from the Rubingh model confirm strong attractive interactions between the two surfactants, with stronger association in the micellar phase than at the air–water interface. In addition, systematic variations in surface tension, zeta potential, and foam properties demonstrate that charge neutralization and interfacial packing jointly govern macroscopic behavior. These results provide a coherent picture of the synergistic mechanism in mixed ionic surfactant systems and suggest their potential utility in interfacial formulation processes such as detergency and emulsification. Download: Download high-res image (164KB) Download: Download full-size image
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高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2026
·
IF 4
Xinyi Min,Yi Zhao,Yuhang Xiao,Xiangyu Zhao,Yaner Zhao,Dilinigaer Wumaier,Dajuan Dai,Hengye Chen,Wanjun Long,Wei Lan,Haiyan Fu
BACKGROUND l -Lysine ( l -Lys), an essential amino acid, serves as a core indicator for evaluating food nutritional quality. Although naturally abundant in ingredients such as soybeans, its content must be precisely regulated during processing to meet nutritional standards. Moreover, improper processing and storage can induce l -Lys degradation or conversion, compromising both nutritional value and food safety. Given its pivotal role in nutritional balance and quality assurance, there is an urgent need for simple, rapid, and highly sensitive analytical methods for l -Lys detection. RESULTS An innovative ‘off–on’ fluorescent sensor tailored for food-related applications was developed, utilizing CdTe quantum dots as the fluorophore and dodecyl trimethyl ammonium bromide self-assembled citrate-capped gold nanoparticles (DTAB-AuNPs) as the quencher for the rapid detection of l -lys. During the detection process, l -lys served as a binding bridge, facilitating the aggregation of DTAB-AuNPs. This reduction inhibited fluorescence resonance energy transfer between the fluorophore and the quencher, leading to fluorescence recovery. The degree of aggregation-induced fluorescence recovery exhibited a linear correlation with the concentration of l -lys within the range of 0.5–10 μ m ( R = 0.999). This newly developed sensing method demonstrated an impressive limit of detection of 3.22 n m . It was successfully applied to detect l -lys in various food-relevant samples, including milk, soybean, plasma and compound amino acid oral solution used in food-related nutritional supplements. CONCLUSION The results highlight its great potential for practical applications in multiple fields such as quality control of dairy and agricultural products, as well as clinical diagnosis related to nutritional status assessment. © 2026 Society of Chemical Industry.
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DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2022
·
IF 10.53
Ying Wang,Yue Yang,Zhiyuan Zha,Jixiao Wang,Zhi Wang,Song Zhao
Nanofiltration process has been perceived as one of the promising approaches in desalination and separation of monovalent/divalent salts. Despite significant progresses has been made in permeability and salt rejection, the industrial separation for monovalent/divalent salts is limited by the insufficient selectivity for ions with different charges and sizes. This work firstly proposed a porous organic cage supramolecular membrane with topologically structured “window-to-window” channels for the fast transport of monovalent ions and water molecules. Specifically, porous organic cage (RCC3) molecule and nonpolar alkyl of dodecyltrimethylammonium bromide (DTAB) were assembled into supramolecular [email protected] through hydrophobic interaction by molecular recognition of polar cavity. Furthermore, terephthaloyl chloride (TPC) was employed as a crosslinker by interfacial polymerization to construct [email protected] supramolecular film onto the surface of polydopamine modified polysulfone (PSf) substrate. The results suggested that [email protected] membrane displayed a high permeability of 13.9 L m −2 h −1 bar −1 , and attractive performance for monovalent/divalent salts separation and small molecule solutions desalination. The salt rejections to Na 2 SO 4 , MgSO 4 , NaCl and MgCl 2 are 98.5%, 90.1%, 19.8% and 12.8%, and the selectivities of NaCl/Na 2 SO 4 and NaCl/MgSO 4 reached 42.6 and 7.8, respectively. Besides, the separation factors for NaCl/medicine and NaCl/dye mixtures are 95.5 of δ NaCl/DG and 76.6 of δ NaCl/CR , respectively. The excellent separation performance of [email protected] supramolecular membrane provides a new idea for developing high-efficiency membranes for monovalent/divalent salts separation.
研究领域:
材料科学
·
化学工程
·
膜技术
·
脱盐
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）