JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Ting Wang,Weifang Zhao,Ran Ren,Huilin Lan,Tengfei Zhou,Juncheng Hu,Qingqing Jiang
Exploring robust electrode materials which could permit fast and reversible insertion/extraction of large K + is a crucial challenge for potassium-ion batteries (PIBs). Smart interfacial design could facilitate electron/ion transport as well as assure the integrity of electrode. Herein, Cetyltrimethylammonium bromide (CTAB) was found to play bifunctional roles in construction of Nb 2 CT x @MoSe 2 heterostructure. Firstly, functionalization of CTAB on the surface of Nb 2 CT x could influence the subsequent growth of MoSe 2 by electrostatic effect, stereochemical effect and the synergetic Lewis acid-base interaction, leading to the formation of Nb 2 CT x @MoSe 2 with tiled heterostructure. Secondly, the interlayer spacing of Nb 2 CT x was expanded from 0.77 to 1.21 nm owing to the pillar effect of CTAB. As excepted, the capacity retention was 80 % from 100 mA g −1 (406 mA h g −1 ) to 1000 mA g −1 concerning rate capability and the specific capacity maintained at 240 mA h g −1 (at 2000 mA g −1 ) over 300 cycles. The calculated D K values from Galvanostatic intermittent titration technique (GITT) measurement of the titled C-T-Nb 2 CT x @MoSe 2 @C electrode is two orders of magnitude larger than the traditional T-Nb 2 CT x @MoSe 2 @C electrode, further confirming intimate interface between MoSe 2 and Nb 2 CT x could provide convenient potassium-ion transport channels and fast diffusion kinetics. Finally, ex-situ characterizations at different charging and discharging voltage stages, including ex-situ XRD/Raman/HRTEM/XPS have been carried out to reveal the potassium storage mechanism. This work provides a facile strategy for the regulation of interface engineering by the assist of CTAB which could extend to other MXenes-TMDs (Transition metal dichalcogenides) hybrid electrodes.
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高影响因子
ENERGY & FUELS
·
2017
·
IF 3.091
Xuliang Lin,Cheng Cai,Jinhao Huang,Hongming Lou,Xueqing Qiu,Meilu Lin,Jieyi Zheng,Yuxia Pang,Dongjie Yang
Lignosulfonate (LS) had various influences on the enzymatic digestibility of lignocelluloses for the complicated structure of LS. The effect of the complex of LS and cationic surfactant cetyltrimethylammonium bromide (LS–CTAB) on the enzymatic digestibility of corn stover and Avicel was investigated in this study. The LS–CTAB catanionic surfactant could significantly improve the enzymatic digestibility of Avicel and corn stover from 42.1 and 24.3% to 62.3 and 56.2%, respectively. In addition, the effect of LS–CTAB with various molecular weights and sulfonation degrees of LS and varied alkyl chain lengths of CnTAB on the enzymatic digestibility of Avicel was further investigated to reveal that the mechanism of LS–CTAB enhanced the enzymatic digestibility of cellulose. LS adsorbed on cellulase aggregates and dispersed the aggregates to form the smaller and more hydrophilic LS–cellulase aggregates. CTAB neutralized the electronegative charge of LS–cellulase aggregates, improved the interaction between cellulase and cellulose, and enhanced the enzymatic digestibility of cellulose.
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CHEMOSPHERE
·
2022
·
IF 8.943
Jinghan Guo,Boyao Zhou,Shuangying Li,Yayan Tong,Zhi Li,Menghua Liu,Yanhui Li,Tongxu Qu,Qingxiang Zhou
Present work depicted a novel electrochemical sensor fabricated with magnetic carbon dots (M-CDs) and cetyltrimethylammonium bromide (CTAB) modified glassy carbon electrode (GCE) for selective measurement of 3,3′,5,5′-tetrabromobisphenol A (TBBPA) in beverages. The M-CDs composite material revealed good electrocatalytic activity, and CTAB has strong hydrophobic interaction which enable it have good enrichment capacity of hydrophobic compounds, and combination of them further enhances the electrochemical signal. Hence CTAB decoration can markedly improve the detection performance of TBBPA. Electrochemical properties of the fabricated sensor was investigated through performing cyclic voltammetry (CV). The morphology and functional groups of the modified materials were examined with transmission electron microscope (TEM) and Fourier transform infrared spectroscopy (FTIR). The results indicated that the synthesized material had a spherical-like structure, good dispersion properties and plenty of functional groups on the surface. The effects of incubation potential, incubation time, pH of electrolyte, and scanning rate on oxidation peak current were investigated. Under optimal conditions, the designed sensor had good linear range of 1 nM–1000 nM, and the detection of limit of the constructed sensor was 0.75 nM. The constructed sensor was utilized to detect TBBPA in vitamin water, scream drink and genki forest, and satisfactory detection performance had been achieved.
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高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2019
·
IF 3.858
Lili Lian,Xinhao Jiang,Junjiao Guan,Zhifu Qiu,Xiyue Wang,Dawei Lou
The migration of bisphenols (BPs) can take place from plastic packaging materials into freshly cooked takeaway food, especially at high temperatures. In this study, cetyltrimethylammonium bromide - intercalated zinc oxide (ZnO@CTAB) was developed and used to extract the migration of BPs (bisphenol A and bisphenol AF) from disposable plastic materials to contained food simulates. Several experimental parameters that influence extraction efficiency were investigated. Under optimal conditions, a sensitive dispersive solid-phase extraction method based on ZnO@CTAB was proposed for the analysis of BPs coupled with ultra-high performance liquid chromatography and time-of-flight mass spectrometry. The method exhibited good linearity of calibration, high recovery (97.63–109.33%), low limits of detection 0.027–0.030 μg L −1 , and acceptable precisions. The developed method was used to carry out a migration test from two disposable plastic bags and a disposable plastic container, using distilled water at 100 °C as a hot liquid food simulant. The migration concentrations of bisphenol AF was found to be 0.42 μg L −1 and 0.86 μg L −1 for the two types of disposable plastic bags, and the concentration of bisphenol A was 0.49 μg L −1 for disposable plastic container. The proposed method was also applied to investigate the migration of BPAF from the disposable plastic bags to different food simulants, revealing that the release of BPAF levels depended on the polarity of the liquid food components.
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LUMINESCENCE
·
2015
·Vol. 31
·期 4
·1025-1030
·
IF 1.518
Na Li,Xia Hao,Bei Hua Kang,Nian Bing Li,Hong Qun Luo
This work proposed a rapid and novel fluorescence-sensing system using a complex of acridine orange (AO) and polystyrene sulfonate (PSS) to sensitively recognize and monitor cetyltrimethylammonium bromide (CTAB) in an aqueous medium. AO can interact with PSS and a complex is formed via electrostatic attraction and hydrophobic interaction. The fluorescence of AO is greatly quenched after the introduction of PSS. Upon its subsequent addition, CTAB can interact and form a complex with PSS because the electrostatic attraction between CTAB and PSS is much stronger than that between AO and PSS, which results in significant fluorescence recovery. Interestingly, the proposed method can be applied for the discrimination and detection of surfactants with different hydrocarbon chain lengths due to their different binding affinity toward PSS. The detection limit for CTAB is as low as 0.2 µg/mL and the linear range is from 0.5 to 3.5 µg/mL. Moreover, we applied the sensor to the successful detection of CTAB in water samples. Copyright © 2015 John Wiley & Sons, Ltd.
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POWDER TECHNOLOGY
·
2023
·
IF 5.2
Chengdong Li,Qingsong Liu,Guihua Zhang,Liangliang Lin,Kostya (Ken) Ostrikov
Polymethylsilsesquioxane (PMSQ) aerogels are silica aerogels that contain dangling methyl groups and exhibit high strength and flexibility. Common silica precursors trialkoxysilanes have difficulty to form networks in sol-gel processes, preventing monolith formation. Here crack-free PMSQ monolithic aerogels are synthesized from methyltriethoxysilane (MTES) at ambient conditions. The concentrations of cetyltrimethylammonium bromide (CTAB) surfactant in the sol were optimized to delay the phase separation of MTES. Crack-free aerogel monoliths with flat surfaces were obtained from silica sols with a CTAB of 0.692–1.039 mmol/L, while pits, wrinkles, cracks, or complete breakage appeared beyond this range. The Si-CH 3 groups on the aerogel skeleton made them hydrophobic up to 400 °C for 1 h in air conditions while oxidized into Si-O-Si bonds at 565.0–751.2 °C under N 2 conditions, making them hydrophilic. The new synthesis method is 1.3–31.8 times faster than conventional processes and contributes to developing next-generation green and scalable production technologies of silica aerogels.
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BIOCHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 3.6
Xinyue Wang,Haojie Qian,Caoxing Huang,Bo Fan,Yucai He,Wei Tang
This work successfully developed an alkaline deep eutectic solvent (DES) composed of cetyltrimethylammonium bromide (CTAB) and ethanolamine (EA), and systematically evaluated its performance in the pretreatment of poplar sawdust (PS). The characterization of DES indicated an extensive hydrogen-bonding network and exceptional thermal resilience. Through optimization of key pretreatment parameters, the most effective pretreatment conditions were determined to be a molar ratio of CTAB to EA at 1:8, a temperature of 160 °C, and a time of 90 min. Under these optimized conditions, the DES demonstrated remarkable fractionation performance, achieving efficient delignification (64.2%) and substantial xylan extraction (92.4%). Ultimately, the enzymatic hydrolysis achieved an exceptional efficiency of 83.9%. Structural analyses unveiled that the pretreatment profoundly amplified substrate accessibility and elevated the crystallinity index of cellulose, while simultaneously achieving efficient cleavage of pivotal interunit linkages and aromatic frameworks embedded within lignin. The dominant mechanism underpinning enhanced efficiency centered on the disruption of lignin-driven supramolecular aggregation and the potentiation of intermolecular hydrogen bonding networks, thereby enabling a more thorough and effective disassembly of the lignocellulosic architecture. This remarkable enhancement in saccharification performance not only established a robust sugar platform for ethanol fermentation from PS but also delivered profound theoretical insights and critical technological advancements for the realization of high-value biorefinery systems leveraging other hardwood feedstocks.
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ENVIRONMENTAL POLLUTION
·
2020
·
IF 6.793
Dan Li,Yin Zhong,Xifen Zhu,Heli Wang,Weiqiang Yang,Yirong Deng,Weilin Huang,Ping’an Peng
Tris(2-chloroethyl) phosphate (TCEP) is a widely found emerging pollutant due to its heavy usage as a flame retardant . It is chemically stable and is very difficult to removal from water. The goal of this study was to explore whether iron monosulfide (FeS) can be used for reductive transformation of TCEP as FeS can react with a variety of halogenated organic contaminants . We used batch reactor systems to quantify the transformation reactions in the absence and presence of cetyltrimethylammonium bromide (CTAB, a common surfactant in aquatic environments). The results showed that, in the presence of CTAB (100 mg L −1 ), FeS exhibited much greater reactivity towards TCEP as 93% of initial TCEP had been transformed within 14 d of reaction. In the absence of CTAB, it required 710 d of reaction to achieve 97.3% reduction of initial TCEP. The enhancement of CTAB on TCEP transformation rate could be due to the facts that CTAB could stabilize FeS suspension against aggregation, protect FeS from rapid oxidation, and increase surface adsorption of TCEP on FeS. XPS analysis showed that both Fe(II) and S(-II) species on the FeS surface were involved in the reductive transformation of TCEP. Analysis of transformation products revealed that TCEP was reductively transformed into bis(2-chloroethyl) phosphate (BCEP), Cl − and C 2 H 4 . These findings showed that FeS may play an important role in the reductive transformation of TCEP when TCEP coexisting with CTAB in aquatic environments.
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INORGANIC CHEMISTRY
·
2019
·
IF 4.85
Zhe Sun,Yu Ling,Shi Gang Liu,Yu Zhu Yang,Xiao Hu Wang,Yu Zhu Fan,Nian Bing Li,Hong Qun Luo
Rapid and sensitive detection of surfactants has attracted more and more attention since surfactants not only cause water pollution but also affect the health of human beings. Luminescent metal–organic frameworks combining unique optical property and inherent permanent porosity for guest–host encapsulation are widely used in fluorescence detection. Here we report a ratiometric fluorescent probe (denoted as UiO-66-NH2@PB) based on a Zr-based metal–organic framework (UiO-66-NH2) and a fluorescent dye, phloxine B (PB), for visual and fluorescent determination of cationic surfactants (cetyltrimethylammonium bromide; CTAB). The intensity ratio of dual-emission sensor exhibits a linear response to the CTAB concentrations of 0.1–17 μM and obtains a low detection limit (0.074 μM). Moreover, this method has been successfully utilized to monitor CTAB in the environmental water samples with satisfied recoveries. Importantly, this work provides a new insight into developing smartphone-based sensor to realize a rapid, on-site visual and quantification-based detection of CTAB.
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高影响因子
CELLULOSE
·
2016
·Vol. 24
·期 2
·669-676
·
IF 3.195
Lin Xuliang,Lou Hongming,Qiu Xueqing,Pang Yuxia,Yang Dongjie
Nonionic surfactants could effectively improve the enzymatic hydrolysis efficiency of lignocellulose, while small molecule anionic and cationic surfactants usually inhibited the enzymatic hydrolysis. The results showed that the anionic surfactant sodium dodecyl sulfate (SDS) could improve the enzymatic hydrolysis efficiency of Avicel at the concentration range of 0.1–1 mM, but it did inhibit enzymatic hydrolysis at higher concentration. Cationic surfactant cetyltrimethylammonium bromide (CTAB) was used to regulate the surface charge of SDS; thereby catanionic surfactant SDS-CTAB was formed. The effect of SDS-CTAB catanionic surfactant with varied molar ratios on the enzymatic hydrolysis of pure cellulose and corn stover at various enzymatic hydrolysis environments was investigated. SDS-CTAB could increase the enzymatic hydrolysis of corn stover at high solid loading from 33.3 to 42.4%. Using SDS-CTAB could reduce about 58% of the cellulase dosage to achieve 80% of the enzymatic hydrolysis of corn stover. SDS-CTAB catanionic surfactant could regulate the surface charge of cellulase in the hydrolyzate and reduce the non-productive adsorption of cellulase on the lignin, thereby improving the enzymatic hydrolysis efficiency of lignocellulose.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yuchen Xing,Bo Zhang,Qijian Niu,Guanya Ji
Nanoplastics, characterized by their small size, high diffusion, and stability, have attracted wide attention worldwide as a new potentially threatening pollutant. In this study, magnetic rice straw biochar modified with cetyltrimethylammonium bromide (CTAB) was prepared and utilized for the adsorption removal of polystyrene nanoparticles (PSNPs, <100 nm). The characteristics and adsorption performance of CTAB modified magnetic biochar (MBC-CTAB) were systematically investigated using characterization techniques and batch adsorption experiments. The grafting of alkyl chains onto the biochar surface through surfactant modification improved the surface activity and adsorption capacity of the magnetic biochar towards nanoplastics. Moreover, the application of an external magnetic field facilitated the rapid separation and recovery of MBC-CTAB. MBC-CTAB exhibited a removal efficiency of 99.56 % for 20 mg/L PSNPs, with a maximal adsorption capacity of 54.07 mg/g at 298 K. The presence of anions such as HPO 4 2− and CO 3 2− as well as dissolved organic compounds like humic acid creates significant competition between PSNPs, thereby inhibiting the adsorption capacity of MBC-CTAB towards PSNPs. The mechanism of MBC-CTAB for nanoplastics adsorption can be attributed to electrostatic interaction, hydrophobic interactions, pore filling, and surface complexation. This study demonstrates the feasibility of using surfactant-modified biochar for the adsorption of nanoplastics, providing a promising option for the development of new pollutant treatment technologies and the mitigation of the adverse impacts of nanoplastics on the environment and ecosystems.
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ORGANIC ELECTRONICS
·
2022
·
IF 3.868
Zhuonan Shi,Shina Li,Changli Min,Junjie Xie,Ruixin Ma
Carbon electrodes represent a promising strategy for creating stable and low-cost perovskite solar cells (PSCs). However, PSCs with carbon electrodes usually suffer from energy level mismatch at the perovskite/carbon interface. In this study, the application of cetyltrimethylammonium bromide (CTABr) as a self-assembled monolayer (SAM) is explored to optimize the energy level alignment. As a result, CTABr-modified cell shows a 22.26% improvement in power conversion efficiency (PCE) and delivers an impressive PCE of 11.26% with a stabilized current density of 15.59 mA/cm 2 . Moreover, in a damp environment (humidity ≈85%) without encapsulation, CTABr-modified PSCs remain at 90% and 57% of the initial efficiency after being aged for 240 and 480 h, respectively. This study paves a new route for preparing better-performing PSCs with carbon using a low-temperature process.
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