JOURNAL OF MOLECULAR LIQUIDS
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2026
·
IF 5.2
Jing Zhou,Hua Liang,Zhicheng Guo,Qiang Tian,Baihua Chen,László Almásy
Thorium and uranium found in polluted water and soil caused by mining are posing ecological security risks and being detrimental to sustainable development of the nuclear energy. Reported chemical sensors exhibit excellent response to uranium or thorium, but most of them only capable of detecting one type of the two nuclide ions in organic solvents or in aqueous organic solvent mixture. So it is still a challenging journey to detect the two nuclides distinctly by a same probe in pure water, especially in the presence of coexisting lanthanide interfering ions. In this work, sequential fluorescence detection of Th 4+ and UO 2 2+ in nearly 100% water (H 2 O/DMSO = 100/1, v /v) is achieved by a fluorescent probe, N′-(pyren-1-ylmethylene)-4-hydroxybenzohydrazide ( POH ), with the assistance of cationic surfactant cetyltrimethylammonium bromide (CTAB). POH exhibited a distinct green fluorescence toward Th 4+ in CTAB aqueous solution, and the detection limit can reach 60.2 nM with a binding constant of 7.07 × 10 4 M −1 . Moreover, the CTAB- POH -Th 4+ system presented a selective “turn-off” phenomenon for UO 2 2+ with a high immunity to other interference ions. The detection limit of 88.1 nM toward UO 2 2+ can be reached, with an association constant of 8.17 × 10 4 M −1 . 1 H NMR and FT-IR spectroscopic analysis coupled with nuclide ion titration investigations demonstrated that the presence of CTAB facilitated the formation of POH-Th 4+ excimer, while the addition of UO 2 2+ replaced the Th 4+ , leading to specific emission quenching of the excimer, which was supported by DFT calculations. This study provides a reliable sensing strategy for the sequential detection of Th 4+ and UO 2 2+ in water. It also offers valuable insights into surfactant-assisted sensing mechanism. The probe-CTAB platform also demonstrates the practical applicability to detect the two nuclides in real water samples.
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BIORESOURCE TECHNOLOGY
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2025
·
IF 9
Haitao Yang,Yang Liu,Xingru Wu,Jie Yuan,Lan Yao
To address low cellulose conversion efficiency stemming from recalcitrance of lignocellulose, a novel ternary DES-CTAB (deep eutectic solvents- cetyltrimethylammonium bromide) system was developed by synergistically integrating CTAB with DES. And related underlying mechanisms were elucidated. Pretreated residues properties, lignin structure and lignin-cellulase interaction were systematically characterized. Results indicated that the DES-CTAB pretreatment removed 83.21 % of hemicellulose and 79.37 % of lignin while preserving 88.69 % of cellulose during pretreatment at 150 °C for 1 h. Enzymatic hydrolysis efficiency was enhanced to 71.58 %, representing 36.55 % improvement compared with DES pretreatment. It was revealed that CTAB reduced lignin hydrophobicity, inhibited β-O-4 cleavage and phenolic hydroxyl group formation, and mitigated non-productive cellulase adsorp-tion to residual lignin. Fluorescence spectroscopy analysis confirmed that CTAB significantly weakened lignin-enzyme interactions, as evidenced by a 2–3 order of magnitude decreased in the binding constant (K a ) between cellulase and residual lignin. The results could provide theoretical support for green and efficient biomass pretreatment technologies development.
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高影响因子
MOLECULES
·
2017
·Vol. 22
·期 5
·859
·
IF 2.861
Yuxue Zhou,Pengfei Lv,Xiangdong Meng,Yanping Tang,Pingping Huang,Xiaobing Chen,Xiaoshuang Shen,Xianghua Zeng
Two-dimensional thin Bi2WO6nanoplates have been fabricated using a cetyltrimethylammonium bromide (CTAB)-assisted hydrothermal method. We investigated the proposed formation mechanism based on the crystalline structures of the thin Bi2WO6nanoplates. The high adsorption ability and excellent visible-light driven photocatalytic activities of the Bi2WO6nanoplates were illustrated, in view of exposed (001) facets of nanoplates possessing faster separation of photo-generated charge carriers and increased catalytically active sites. Such a cost-effective way to obtain Bi2WO6nanoplates offers new possibilities for the design of adsorptive semiconductor photocatalysts with strengthened photocatalytic activities.Keywords:Bi2WO6nanoplates;semiconductor photocatalyst;visible light-driven
研究领域:
材料科学
·
环境科学
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ANALYTICA CHIMICA ACTA
·
2013
·
IF 4.387
Haiyu Tian,Junhong Qian,Qian Sun,Hongyan Bai,Weibing Zhang
Three fluorescent probes were constructed by incorporating an α,β-unsaturated ketone to a coumarin fluorophore. The selective addition of sulfite to the alkene of TSP assisted by cetyltrimethyl ammonium bromide (CTAB) micelle can be visualized by dramatic color and ratiometric fluorescence changes. In CTAB–PBS system, the fluorescence intensity ratio at 465 nm and 592 nm ( I 465 / I 592 ) and the absorbance ratio at 390 nm and 470 nm ( A 390 / A 470 ) were linearly proportional to sulfite concentration in the range of 0.5–150 μM, and the detection limit was 0.2 μM. Good selectivity and competition of TSP1 towards sulfite over several anions and biological thiols were acquired. Probe TSP1 was used to detect sulfite in three realistic samples (mineral water, sugar and white wine) with good recovery.
研究领域:
分析化学
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环境科学
·
生物化学
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Zhen Lin,Chuangui Cai,Wei Chen,Qian Deng,Jialin Yang,Kaiyuan Huang,Haohua Deng,Xinhua Lin,Wei Chen,Wensong Yao
Chemiluminescence (CL) intensity of luminol-H 2 O 2 system was dramatically enhanced by cetyltrimethylammonium bromide (CTAB) micelle-mediated 6-aza-2-thiothymine-protected gold nanoclusters (ATT-AuNCs). It is proved that spherical micelles of CTAB in aqueous solution improved the dispersity of ATT-AuNCs, thus enhancing their catalytic activity, which brought in the increased CL intensity of luminol-H 2 O 2 system. Carbazochrome sodium sulfonate (CSS) with a hemostatic containing tetrahydroindole structure broke the spherical micelles and notably quenched the CL intensity of luminol-H 2 O 2 -CTAB-ATT AuNCs system. Based on these results, a simple, fast, and sensitive CL method has been developed for the detection of CSS with a linear range of 0.25–25 μM and a detection limit of 0.11 μM. The method has also been successfully applied to the determination of CSS in serum with satisfied recoveries in the range of 89.6 % to 103.7 %. This study not only provides an effective approach for CSS detection but also paves the way for AuNCs-based CL applications.
研究领域:
分析化学
·
纳米生物学
·
药物检测
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高影响因子
LANGMUIR
·
2025
·
IF 3.9
Fangyuan Yang,Feiyu Zhu,Hao Shi,Xuzhen Dong,Jie Sheng,Jinlong Zhou
In this experiment, PAN/Fe3O4@CTAB magnetic nanofibers (average diameter of 386 nm) were prepared by electrospinning for the removal of As(V) from an aqueous solution. Material characterization was analyzed using phase analysis of X-ray diffraction (XRD), a Fourier transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), vibrating sample magnetometry (VSM), and thermogravimetric analysis (TG), which demonstrated that the magnetic nanoparticles were successfully incorporated into the fiber membrane. Batch adsorption experiments revealed that the process followed pseudo-second-order kinetics and Langmuir isotherm models, achieving a maximum adsorption capacity of 138.66 mg/g, higher than that of unmodified PAN/Fe3O4 (93.59 mg/g). The adsorption efficiency of this adsorbent was high (97% removal in 300 min) and remained at 91% after five regeneration cycles (initial value of 98.65%). The response surface methodology (RSM) was also employed to construct and analyze the model to investigate the effects of three critical adsorption parameters, pH, adsorption time, and adsorbent concentration, on As(V). The optimal conditions for adsorption were determined to be a pH of 3.81, an adsorption time of 342 min, and an adsorbent concentration of 1.36 g/L, achieving an arsenic ion removal rate of 98.62%. The experimental results were found to be in accordance with the theoretical parameters, thereby providing further evidence that the synthesized material is an excellent adsorbent for the treatment of water pollution.
研究领域:
环境科学
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材料科学
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JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Xun Li,Xuanying Lu,Bingtao Gui,Cheng Wang,Jun Liu,Liang Lu
Seawater uranium extraction is a key technology for environmental sustainability with significant potential applications. For the first time, this work synthesized a CTAB/Bent-MOF808 with strong stability, abundant coordination functional groups, and low cost, and assessed its adsorption effectiveness for U (VI) in carbonate solutions. The study explores how pH, contact time, uranium concentration, temperature, carbonate, halide salts, phosphorus, and Ca/Mg ions influence uranium adsorption, with a focus on mechanistic insights through characterization and modeling. Under optimal conditions (temperature of 25 °C, pH 8.0, with a sodium bicarbonate concentration of 2 mmol L −1 and a U(VI) concentration of 50 mg L −1 ), which are similar to the real seawater environment, CTAB/Bent-MOF808 demonstrated superior uranium adsorption performance compared to MOF808 and CTAB/Bent in U(VI)–CO 3 solutions. Under high initial pH, NaHCO 3 , Ca/Mg ions, and halide ion concentrations, the complex's uranium adsorption capacity and removal rate are reduced due to competitive adsorption between ions, as well as increased electrostatic repulsion on the surface. The sorption process was identified as monolayer homogeneous chemical adsorption process by analyzing it with quasi second order kinetic models and Langmuir isotherm models. The inhibitory effect of halide ions is as follows: I − > F − > Br − > Cl − . XPS suggested that the complexation of bromide anion with –COOH and electrostatic attraction could be crucial processes for uranium adsorption. This study offers theoretical insights into uranium extraction from natural uranium-bearing waters and highlights the expanded potential of MOF-based adsorbents in this process, enhancing both efficiency and application scope.
研究领域:
环境科学
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材料科学
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International Journal of Materials Research
·
2023
·Vol. 114
·期 3
·207-218
·
IF 0.8
Xiaoyu Wang,Zizhan Sun,Chunhu Yu,Zhengyu Cai,Chuangang Fan,Lizhai Pei
Bi 2 O 3 /Dy 2 O 3 nanoflakes with triclinic Bi 2 O 3 and cubic Dy 2 O 3 phases were synthesized by a hexadecyl trimethyl ammonium bromide (CTAB)-assisted hydrothermal route. The Bi 2 O 3 /Dy 2 O 3 nanoflakes were analyzed by X-ray diffraction, X-ray photoelectron spectroscopy, electron microscopy and electrochemical impedance spectroscopy. The size of the Bi 2 O 3 /Dy 2 O 3 nanoflakes with curled surface is about 2 μm and thickness is about 25 nm. X-ray photoelectron spectroscopy confirms the chemical composition of the Bi 2 O 3 /Dy 2 O 3 nanoflakes. The formation process of the Bi 2 O 3 /Dy 2 O 3 nanoflakes was investigated by controlling the CTAB concentration, reaction temperature and reaction time. The formation of the Bi 2 O 3 /Dy 2 O 3 nanoflakes depends on CTAB. The results of cyclic voltammetry (CV) and electrochemical impedance spectroscopy demonstrate good electro-catalytic activity of the Bi 2 O 3 /Dy 2 O 3 nanoflakes towards L-cysteine with a pair of quasi-reversible CV peaks at +0.01 V and –0.68 V, respectively. Bi 2 O 3 /Dy 2 O 3 nanoflakes modified electrode detects L-cysteine linearly over a concentration ranging from 0.001 to 2 mM with a detection limit of 0.32 μM. The proposed nanocomposites modified electrode possesses good reproducibility and stability which can be used as a promising candidate for L-cysteine detection.
研究领域:
材料科学
·
电化学
·
生物传感器
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2019
·
IF 6.361
Zeyu Zhang,Haotian Tan,Yongliang Zhao,Qin Wang,Haitao Wang
Hypothesis Conventional strategies based on emulsion templates to produce porous materials are complicated and not environmental-friendly, thus inspiring a facile and novel approach via polymerization of aqueous foams. Graphene oxide (GO) has been proved as a very efficient Pickering stabilizer for oil-in-water or water-in-oil emulsions, however, it has rarely (if any) been used to stabilize aqueous foams. It is of high interest to prepare GO-stabilized aqueous foams and subsequent porous hydrogels after polymerization of the aqueous phase. Experiments GO was slightly hydrophobized with cetyltrimethylammonium bromide (CTAB) and then used to stabilize aqueous foams containing a water-soluble monomer , N-(3-Sulfopropyl)-N-methacroyloxyethyl-N,N-dimethylammonium betaine (SBMA). After polymerizing the aqueous phase, macroporous zwitterionic hydrogels (PSBMA) were prepared. The pore morphology of macroporous PSBMA were observed by a field-emission scanning electron microscope . Findings The wettability of modified GO by both water and air, indeed has a significant influence on the air bubble size and size distribution as well as the pore size of resulting macroporous PSBMA hydrogels. The pore size and pore interconnectivity of the hydrogels can be tailored by simply varying the surface property and concentration of GO in water. PSBMA hydrogels exhibit a pronounced uptake of aqueous NaCl solutions and efficient separation of oil-in-water emulsions.
研究领域:
材料科学
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化学工程
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Particuology
·
2015
·
IF 2.11
Jie Li,Lianxi Chen,Xi Li,Chaocan Zhang,Zhenhui Liu
In this study, we present a facile method to prepare thiocyanato-functionalized porous silica nanospheres. Thiocyanato functionalized silica shells were coated on positively charged cetyltrimethylammonium bromide (CTAB) micelles via hydrolysis and condensation of (3-thiocyanatopropyl)triethoxysilane (TCPTES), the CTAB cores were removed subsequently to form thiocyanato-functionalized porous silica nanospheres. We demonstrate that the contents of the thiocyanato groups within the functionalized porous silica nanosphere frameworks gradually diminished as a function of hydrothermal treatment time at 100 °C until complete removal, confirmed by TGA and FTIR spectra. The data indicate that extended operation at relatively elevated temperatures may lead to the decomposition of the thiocyanato functional groups. In addition, at a lower CTAB concentration (0.0009 M), non-porous thiocyanato functionalized silica nanospheres were formed. However, increasing the CTAB concentration to 0.01 M resulted in porous nanospheres inferring that a CTAB concentration threshold is needed to form thiocyanato-functionalized porous silica nanospheres.
研究领域:
材料科学
·
化学工程
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MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
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2026
·
IF 2.1
Zhixin Chen,Jinrong Duan,Jiafen Wang,Fang Si,Yunlong Wu,Yanyan Song
In this paper, the effects of surfactants such as PEG, CTAB and their combination (PEG: CTAB) on the microstructure and corrosion resistance of Ni-P-Si 3 N 4 composite coating were systematically studied. The electrochemical test shows that adding PEG or CTAB can reduce the coating defects and improve the corrosion resistance. When PEG and CTAB are used in combination, they show synergistic effect, which further enhances the compactness and corrosion protection of the coating. Among them, when the composite ratio is 3:1 (CTAB: PEG), the corrosion current density is significantly reduced, and the stability of the coating in corrosive medium is improved.
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JOURNAL OF POLYMER RESEARCH
·
2026
·Vol. 33
·期 8
·337
·
IF 3.5
Wang Kai,Li Aiyuan,Zhou Xiaoyan,Yu Shibeike,Chen Bifen,Sun Xiangdong,Zhang Chenyang
Congo red (CR) is a representative benzidine-based anionic azo dye with high toxicity, carcinogenicity, and poor biodegradability, posing substantial threats to human health and aquatic ecosystems. Therefore, its effective removal from wastewater remains a major environmental challenge. To address this, magnetic Fe 3 O 4 @SiO 2 @PPy-CTAB composite microspheres (PPy: polypyrrole; CTAB: cetyltrimethylammonium bromide) were fabricated using a hydrothermal technique in combination with surface modification and in-situ polymerization. The composite was systematically examined using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), vibrating sample magnetometry (VSM), and X-ray photoelectron spectroscopy (XPS), showing a well-defined core-shell framework, with a specific surface area (SSA) of 52.96 m 2 /g, a saturation magnetization of 42.8 emu·g − 1 , and a positively charged surface as a result of CTAB modification. Under optimal conditions (pH = 5, Fe 3 O 4 :CTAB mass ratio = 1:1.5), the CR adsorption capacity reached a maximum of 612.68 mg/g. Kinetic, isothermal, and thermodynamic analyses indicated that the adsorption process was best described by the pseudo-second-order kinetic model and the Langmuir isotherm model, suggesting a spontaneous, endothermic, and entropy-driven chemisorption process. The adsorption mechanism was primarily governed by electrostatic interactions, synergistic π-π stacking, and hydrogen bonding. After ten desorption-adsorption cycles, the adsorption capacity retained 87.1% of its initial adsorption capacity, demonstrating good reusability. The Fe 3 O 4 @SiO 2 @PPy-CTAB composite demonstrates high CR adsorption capacity (612.68 mg/g) and good reusability (87.1% retention after 10 cycles), making it a promising candidate for magnetic separation-based dye wastewater treatment. However, the use of CTAB and organic solvents limits the designation as “green”, and real-world validation is needed before practical application.
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