COLLOID AND POLYMER SCIENCE
·
2019
·Vol. 297
·期 10
·1301-1311
·
IF 1.906
Liu Pin,Qi Chenze,Gao Yong
Colloidosomes have gained intensive attention in the past years due to their substantial applications in wide scopes involving encapsulation, catalysis, and drug delivery, etc. In this study, we depicted the templated fabrication of well-shaped colloidosomes with tunable shell thickness by Pickering emulsion at a mild condition. To this end, toluene-in-water Pickering emulsion stabilized by cetyltrimethylammonium bromide (CTAB)–modified polydopamine (PDA) nanoparticles (PDA@CTAB) was prepared. After the covalent cross-linking of PDA nanoparticles assembled on the surface of an oil droplet through chemical reactions occurring in toluene phase, exclusive intra-colloidosomes were afforded. The shell thickness of colloidsomes could be roughly tuned by the adjustment of the amount of the reactive monomers in the oil phase. Our investigations revealed that CTAB was critical for the successful fabrication of well-shaped colloidosomes. Otherwise, only irregular structures were obtained if pristine PDA–stabilized Pickering emulsion was applied. The current strategy could enable hydrophobic cargo, such as 10-hydroxycamptothecin to be encapsulated while colloidosomes were created. The release behavior of the encapsulated cargoes was also investigated.
CTAB was necessary for the templated fabrication of well-shaped colloidosomes by PDA-stabilized oil-in-water Pickering emulsion
研究领域:
材料科学
·
药物递送
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 73
·59056-59061
·
IF 3.84
Lun Song,Haiyu Tian,Xiaoliang Pei,Ziyou Zhang,Weibing Zhang,Junhong Qian
Two water-soluble colorimetric and turn-on fluorescent probes STP1–2 were rationally designed and synthesized for selective recognition of GSH. Both probes are colorless 4-thioether-1,8-naphthalimide derivatives, which are almost non-fluorescent due to the photoinduced electron transfer from the fluorophore to the 4-nitrobenzene. Upon addition of GSH to STP1/STP2–CTAB solution, obvious spectral responses were observed: the absorption peak shifted from 345 nm to 390 nm companied with ∼90-fold fluorescence enhancement at 487 nm. A good linear relationship between the fluorescence intensity and GSH concentration was obtained, and the detection limit of GSH was estimated to be 8.40 × 10−8 mol L−1. The experimental results imply that both probes could be applied in fluorescent imaging of GSH within living cells and in the detection of mercapto-containing proteins as well.
研究领域:
生物化学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
·
2021
·
IF 2.475
Entian Li,Yuanyuan Zhu,Yang Xu,Yihan Zhang,Pei Yao
The sulfur compounds in gasoline will cause air pollution and acid rain. As the main component of the sulfide compounds in gasoline, dibenzothiophene (DBT) is is difficult to remove. To solve this problem, magnetic imidazole ionic liquids (MILs) with different carbon chain alkanes [C4, 6, 8min]Br/FeCl3 were developed to improve the extractive desulfurization performance. Furthermore, Cetyltrimethylammonium bromide (CTAB) was added, in combination with MILs to achieve a higher removal rate of DBT in gasoline. The results show that CTAB combined with MILs has a better removal effect on DBT. The mechanism of CTAB combined with MILs gasoline desulfurization was analyzed.
研究领域:
化学工程
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE SCIENCES
·
2020
·
IF 2.434
Meng Chao,Lijiang Zhao,Jin Leng,Xinghua Liu,Yutong Li,Junying Zhang,Zilong Tang
Tin oxide (SnO 2 ) with high specific capacity and excellent safety performance has become potential candidate for next generation lithium-ion batteries (LIBs). However, the practical application of SnO 2 is hindered by large volume change and particle aggregation. Herein, a type of three-dimensional (3D) hierarchical porous titanium-based microclews composed of one-dimensional (1D) titanium dioxide (TiO 2 ) nanoribbons and SnO 2 nanoparicles, is synthesized for the first time with the assistance of cationic surfactant , cetyltrimethylammonium bromidewere (CTAB). SnO 2 nanoparticles distribute uniformly on the nanoribbons, and CTAB as growth controller plays a key role in the formation of the uniform and stable hierarchical-structure. The as-synthesized CTAB assisted hierarchical-structure TiO 2 @SnO 2 microclews (CA–TiO 2 @SnO 2 MCs) elelctrode demonstrates outstanding ionic conductivity due to the structure assisting efficient contact between electrode and electrolyte, with a remarkable discharge capacity of 448.3 mAh g −1 after cycling for 500 times at a current density of 500 mA g −1 , and a capacity retention of 558.8 mAh g −1 at 200 mA g −1 after 400 cycles in LIBs.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Omega
·
2021
·
IF 3.512
Ming-Zhang Wei,Tian-Song Deng,Qi Zhang,Zhiqun Cheng,Shiqi Li
Although gold nanorods capped with hexadecyltrimethylammonium bromide (CTAB) have been prepared through the seed-mediated method for their use in diagnostics and therapeutics, the toxicity of AuNRs@CTAB limits their practical applications in the biomedical field. In this work, the synthesis and tuning of gold nanorods at very low concentrations of CTAB (as low as 0.008 M) was successfully achieved by using the seed-mediated method. Furthermore, we managed to optimize the growth conditions by changing the amount of seeds, AgNO3, and/or HCl. At low CTAB concentrations, gold nanorods with tunable size and aspect ratio, high monodispersity, and high purity were obtained and studied by UV–vis spectroscopy, transmission electron microscopy, and Mie–Gans theoretical calculations. This work revealed a method of nanoparticle growth that may be extended to synthesize other nanomaterials such as Ag, Cu, Pd, and Pt at such low CTAB concentrations.
研究领域:
纳米材料科学
·
生物医学工程
·
材料化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Rongze Sun,Jianlong Dai,Danrong Cai,Wentao Yan,Yong Zhou,Congjie Gao
Xylose is a small organic molecule with great economic value in fine chemical production. High-quality xylose production requires removing salt from the feed solution, which is typically an expensive process. Polyamide nanofiltration membranes, characterized by their high rejection of salts (e.g., Na 2 SO 4 ) and low rejection of small organic molecules (such as xylose), are an effective separation technique. The present study proposes a CTAB-assisted shedding strategy toward polyamide oligomers to enhance the xylose/salt separation. When the membrane contacts CTAB solution at appropriate concentrations, CTAB aggregates adsorb onto the membrane surface due to electrostatic and hydrophobic interactions. The hydrophilic outer layer of these aggregates, attributed to the quaternary ammonium groups, facilitates the migration of polyamide oligomers into the solution, increasing membrane pore size and thereby decreasing xylose rejection. This mild process preserves the membrane structure and its strong negative charge, maintaining effective charge repulsion and ensuring high salt rejection. The increased pore size also enhances membrane flux. Results show that xylose rejection decreased from 44.2 % to 20.3 %, while Na 2 SO 4 rejection remained above 98 %. The separation factor increased by 117 %, and flux increased by 104 %. Investigation of the shedding mechanism revealed that the variation of membrane flux with CTAB concentration aligns with the S-shaped adsorption isotherm model of surfactants at the solid-liquid interface. This suggests that the adsorption form of CTAB on the membrane surface is the dominant factor influencing this process. This work shows the promising potential of polyamide nanofiltration membrane technique for the xylose purification and the proposed strategy in small organic molecule/salt separation.
研究领域:
化学工程
·
膜科学
✓ 已验证
产品关联
DOI
高影响因子
NANO
·
2018
·
IF 1.1
Rong Shen,Yichang Yu,Yue Wang,Zhining Xia
The cetyltrimethyl ammonium bromide (CTAB)-modified montmorillonite (MMT) was synthesized via a novel “dissolution and reassembly” method. To determine the optimal formula, the adsorption of C.I. Reactive Red 2 (X3B) with CTAB/MMT was investigated. The optimal CTAB/MMT nanocomposite was used to remove 2,6-dichlorophenol and p-nitrophenol from aqueous solutions. The adsorption results can be described by Langmuir isotherm, and the adsorption capacities were 200 mg/g and 125 mg/g for 2,6-dichlorophenol and p-nitrophenol, respectively. To realize the quick separation and recycle, the magnetic CTAB/MMT was further strategized and synthesized. The adsorption equilibrium time was 15 min for both contaminants; the ions’ strength showed a little bit of influence on the adsorption performance. In addition, compared with acidic condition, neutral condition was more beneficial to the adsorption reaction. Due to the addition of Fe 3 O 4 , the adsorption capacities of this magnetic nanocomposite for 2,6-dichlorophenol and p-nitrophenol were a little bit decreased, which were 170 mg/g and 91 mg/g, respectively. However, the magnetic nanocomposite can be separated within 30 s under an external magnetic field, which would be useful in the practical application.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
BingTao Gui,Jun Liu,Cheng Wang,Shilong Shi,Junxiang Shu,PingPing Ding,Juan Zhai,Changsong Zhao
CTAB/Bent-MOF-74 was synthesized via hydrothermal method to investigate its U(VI) sorption in carbonate solutions. Generally, CTAB/Bent-MOF-74 (∼87.6 mg·g −1 ) showed better sorption capacity than CTAB/Bent-MOF-71 (∼64.2 mg·g −1 ) and CTAB/Bent-CS-35 (∼81.4 mg·g −1 ) in U(VI)-Cl coexist carbonate solutions when pH = 8.0, [NaHCO 3 ] =2 mmol·L −1 , [NaCl] =0.1 mol·L −1 and [U(VI)] =50 mg L −1 . The competitive sorption between HCO 3 − /CO 3 2− , OH − , halide ions and U(VI) complexes ions as well as the weakened electrostatic attraction decreased the composite's uranium sorption efficiency and capacity at high pH initial , NaHCO 3 , phosphate, Ca/Mg and halide ions concentrations. The pseudo-second-order kinetics and Langmuir models indicated a monolayer homogeneous chemisorption process. Besides, 0.1 mol·L −1 HCl shows the highest desorption efficiency among the selected desorbents, and the sorption rate is still high even after four times of desorption. In particular, the decreasing inhibitory capacity of the halide ions was on the order of I − , F − , Br − , Cl − . Characterization analyzes confirmed the good structural stability and Br anion exchange as well as the -OH/-COOH coordination and electrostatic attraction, which could be the predominant sorption mechanisms of U(VI) by CTAB/Bent-MOF-74. The results provided theoretical references for understanding the uranium sorption in natural uranium-containing water and designing potential uranium-extracting materials.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yutao Shan,Chen Chen,Ying Liang,Yuliang Chen,Yuliang Wu,Yijiang Liu,Rui Meng,Wenmin Wang,Weiwei Huang,Fei Yang,Xuesong Yi,Jun Cheng
To investigate the photocatalytic synergistic effect and efficiency of composites of iron sulfide (Fe 3 S 4 ) and titanium dioxide (TiO 2 ) after modification with cetyltrimethylammonium bromide (CTAB), this study employed commercial TiO 2 nanoparticles, ferric chloride hexahydrate, and thiourea as precursors to synthesize the catalyst. CTAB was incorporated into the precursors for modification and optimization. A simple one-step solvothermal method was utilized to prepare TiO 2 @Fe 3 S 4 photocatalysts with different CTAB loadings. After modifying the TiO 2 @Fe 3 S 4 photocatalyst with CTAB, its photocatalytic degradation performance for Rhodamine B and sulfamethoxazole was significantly enhanced, the reaction rate constant for its degradation of RhB, calculated using a pseudo-first-order reaction kinetic model, is 0.2187(min −1 ). By guiding the well-distributed construction of semiconductor heterojunctions in Fe 3 S 4 through CTAB in the reaction atmosphere, the spatial uniformity of the heterojunction structure was strengthened. This improvement enhanced the separation capability of photogenerated electrons and holes without compromising their redox properties, thereby exhibiting excellent catalytic efficiency in the degradation of organic pollutants.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD AND CHEMICAL TOXICOLOGY
·
2022
·
IF 5.572
Ruijuan Lv,Ruimeng Sun,Ting Du,Yuhan Li,Lixia Chen,Yang Zhang,Yanfei Qi
A sensitive electrochemical sensor for sunset yellow (SY) was constructed based on cetyltrimethylammonium bromide (CTAB) functionalized graphene (Gr) and Cu/Zr-MOF electrode modified materials. The CTAB-Gr-Cu/Zr-MOF composites were synthesized by using a mild method and characterized by scanning electron microscopy, Fourier transform infrared spectroscopy and EDX spectrum. The combination of Cu/Zr-MOF and graphene exhibited synergetic effect of the strong accumulation efficiency, fast electron transfer rate and more sensing sites towards the oxidation of SY. The new modified materials remarkably increased the electrochemical response of SY to 6.53-fold when comparing with bare electrode. Under the optimized conditions, the oxidation peak currents of SY had a linear relationship with its concentration in a wide range from 0.10 to 8.00 μM and 40.00–1000.00 μM, and the limit of detection was 6.68 nM (S/N = 3). The electrochemical method shows high sensitivity, stability, reproducibility and is successfully applied in the determination of SY in soft drinks.
研究领域:
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Water
·
2024
·Vol. 16
·期 17
·2446
·
IF 3
Hongxia Du,Zihan Wang,Kinjal J. Shah,Yongjun Sun
In this article, attapulgite (ATP) as a raw material, hexadecyltrimethylammonium bromide (CTAB) as a modifier, and chitosan (CTS) as a composite are used to prepare a natural mineral-based composite adsorbent CTAB-ATP/CTS for the adsorption of norfloxacin in water. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and specific surface area (BET) were used for characterization. When the initial pH is 7, the dosage of adsorbent is 3 g/L, and the initial concentration of norfloxacin is 50 mg/L, the reaction temperature is 25 °C, the shaking time is 4 h, and the maximum removal rate and adsorption capacity of CTAB-ATP/CTS for norfloxacin reached 94.62% and 23.66 mg/g, respectively. The adsorption of norfloxacin by CTAB-ATP/CTS is more consistent with the pseudo-second-order kinetic model (R2= 0.9999, 0.9998, 0.9999 at initial concentrations of 25 mg/L, 50 mg/L, 75 mg/L), and the Langmuir isotherm adsorption model(R2= 0.9903, 0.9935, 0.9933 at temperatures of 25 °C, 30 °C, 35 °C), indicating that the adsorption process of the composite material is controlled by chemical adsorption and its adsorption behavior is mainly single-layer adsorption.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE REVIEW AND LETTERS
·
2017
·
IF 0.491
J. JIANG,L. ZHU,W. QIAN,H. CHEN,C. FENG,S. HAN,H. LIN,F. Y. YE
Glassy carbon electrodes (GCE) were modified by carboxylated graphene oxide/lanthanum with various concentrations of hexadecyl trimethyl ammonium bromide (CTAB), and the treated electrodes, called CTAB/GO-COOLa/GCE, were prepared for the detection of uric acid (UA) and dopamine (DA) by using the differential pulse voltammetry (DPV) and the cyclic voltammetry (CV). The results show that the modified electrode’s electrocatalytic activity could be affected by several factors in the examination, they are the pH value of the system, the main content of CTAB, various concentrations and rates of scan. With a combination of carboxylated graphene oxide/lanthanum and CTAB, the resulted CTAB/GO-COOLa/GCE sensors showed preeminent selectivity and obvious catalytic property toward the electro-oxidation of UA and DA. In optimized conditions, the response of the CTAB/GO-COOLa/GCE electrode for DA was linear in the region of 0.03–500.0 μ M with detection limits of 0.036 μ M (S/N = 3 ) . Two linear response ranges for the determination UA were obtained from ranges of 1 to 200 μ M and 200 to 1300 μ M with a detection limit of 0.42 μ M (S/N = 3 ) . Moreover, the refined electrode was used in the inspection of DA and UA in real samples of serum and urine successfully, displaying its potential application of real samples involved in electroanalysis.
研究领域:
生物化学
·
分析化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）