Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123555
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IF 7.5
Long An,Yushan Zhao,Nanyue Zhang,Songjia Yang,Tianxiang Wang,Xiaojing Yang,Jiajia Shan,Xue Wang
A cetyltrimethylammonium bromide (CTAB)-modified zinc-based metal-organic framework (Zn-MOF) was developed for rapid detection of nanoplastics in aqueous environments. The Zn-MOF-CTAB was synthesized via an electrochemical in-situ method under ambient temperature and pressure conditions. To enhance nanoplastics capture, the organic ligand aminoterephthalic acid was incorporated to impart positive charges to the Zn-MOF within a wide pH range, while the cationic surfactant CTAB introduced hydrophobic groups, synergistically boosting the material’s adsorption capacity for aqueous nanoplastics. The MOF exhibited inherent electrochemical activity from the Zn(II)/Zn(I) redox couple, measured via linear sweep voltammetry (LSV). The peak current of this redox process decreased quantitatively upon nanoplastics adsorption. This current suppression was used as the direct detection signal for quantifying nanoplastic concentrations. For polystyrene (PS) nanoplastics (100 nm, 500 nm, 1 μm), the sensor achieved a low detection limit of 0.1 μg/mL. Furthermore, the practical applicability of this electrochemical sensing platform was validated in real water samples.
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高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2025
·
IF 6
Zhirui Xu,Xianxing Ju,Xin Zou,Pengfei Su,Hao Chen,Mingxiang Chen,Qing Wang
The increasing power density of high-performance electronics induces significant thermal stress mismatches among conventional packaging materials, thereby intensifying the demand for tunable, low-stress materials with high thermal conductivity to ensure packaging reliability. Copper-silicon carbide (Cu-SiC) composites have emerged as promising candidates. While composite electrodeposition offers an effective route to mitigate thermal issues inherent to traditional fabrication techniques, challenges persist in achieving uniform SiC dispersion, high incorporation efficiency, and defect-free heterogeneous interfaces at elevated deposition rates. Herein, an improved patterning electrodeposition strategy with cetyltrimethylammonium bromide (CTAB)-assisted ternary-additive electrolyte was proposed for the rapid fabrication of defect-free Cu-SiC composites. Electrochemical analyses revealed CTAB competitively adsorbed with other additives on cathodic active sites, displacing accelerators and cooperating with suppressors to inhibit Cu matrix electrodeposition, refining grains (<1 μm) and promoting dense nucleation. By systematically tuning critical parameters—current density, CTAB concentration, and SiC content—Cu-SiC coating quality was significantly improved. The optimized process yields a uniform Cu-SiC composite coating with a high SiC content (35.9 wt%), dense Cu matrix with (111) preferred orientation, high deposition rate (65.3 μm/h), defect-free heterogeneous interfaces, a low coefficient of thermal expansion (7.2 × 10 −6 /°C), and minimal warpage (0.08 %).
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Weiliang Pan,Xun Zhang,Rui Deng,Li Gu,Xiuqing Tan,Shanji Yan,Ruihao Zhang,Qiang He
Waste activated sludge (WAS) is produced by urban sewage treatment plants, which contains pathogenic microorganisms, chemical elements, wiht high moisture content (>99%). To mitigate environmental pollution and reduce the volume of WAS, sludge dewatering are widely needed. The main objective of this study is to investigate the improvement in sludge dewaterability through the combined efficacy of tannic acid (TA) and cetyltrimethylammonium bromide (CTAB). Significant reductions in Capillary Suction Time (CST), Specific Resistance to Filtration (SRF), and moisture content of vacuum-filtered sludge cake (WC) were observed as experimental findings demonstrated the combined use of TA and CTAB. Specifically, CST decreased from 78.6 s to 15 s, SRF reduced from 1.12×10 13 m/kg to 2.23×10 12 m/kg, and WC decreased from 97.98% to 74.80%. The levels of polysaccharides and proteins present in various layers of the extracellular polymeric substances (EPS) within the sludge were reduced due to the interaction and formation of protein complexes with TA and CTAB. Additionally, these additives neutralized surface with a negative electrical potential of EPS, decreasing repulsion among sediment particles. This led to a decrease in the Zeta potential , while the contact angle and particle size of the sludge increased. Additionally, the hydrophobicity of the sludge particles was enhanced. As a result, intracellular moisture was released by disrupting the sludge cells. The findings presented here may assist in the development of sustainable and productive strategies for the management of sludge, ultimately promoting environmental protection and the well-being of urban communities.
研究领域:
环境科学
·
污水处理
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高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2016
·Vol. 32
·期 6
·992-995
·
IF 1.086
Liu Lihong,Wang Chunfeng,Zhuo Kelei
A sensitive electrochemical sensor for determining bisphenol A(BPA) was designed. The sensor was a glassy carbon electrode modified with the surfactant cetyltrimethylammonium bromide and the ionic liquid 1-decyl-3-methylimidazolium tetrafluoroborate. The ability of the new sensor to measure BPA was investigated in cyclic voltammetry experiments. Under optimized conditions, the sensor gave a linear response range for BPA of 2.19×10 −7 ―3.28×10 −5 mol/L and a detection limit of 7.31×10 −8 mol/L( S/N =3). BPA could be determined with a lower detection limit, a wider linear range, and more sensitivity using the sensor than using other electrochemical sensors or high performance liquid chromatography with UV detection. The new sensor was used to determine BPA in tap water with recoveries of 97.5%―98.7% and a relative standard deviation <2.9%. The results show that the sensor can be used to determine trace BPA concentrations in tap water.
研究领域:
分析化学
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环境科学
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2015
·
IF 2.729
Panpan Liu,Jiawei Li,Xiuhui Liu,Ming Li,Xiaoquan Lu
A simple and efficient approach was developed to fabricate an amperometric sensor for hydrogen peroxide (H 2 O 2 ) determination based on one-pot synthesis of highly dispersed PtAu nanoparticles–CTAB–graphene nanocomposites. In this study, graphene oxide was first functionalized with a cationic surfactant, cetyl trimethyl ammonium bromide (CTAB); then PtAu nanoparticles (NPs) were deposited on graphene (GR) via a simple chemical co-reduction method. A large amounts of highly dispersed bimetallic PtAu nanoparticles could be well loaded on the surface of the graphene, as revealed by transmission electron microscopy (TEM). In addition, PtAuNPs–CTAB–GR nanocomposites were also characterized by electrochemical methods including cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The experimental results demonstrated that constructed sensor exhibited good catalytic activity toward H 2 O 2 , and obtained a wide linear range from 5.0 × 10 −9 to 4.8 × 10 −6 mol/L with a limit of detection (LOD) of 1.7 × 10 −9 mol/L (S/N = 3). Moreover, it could also be applied to real samples analysis. The excellent performance of this H 2 O 2 sensor could be ascribed to graphene being used as effective load matrix for the deposition of PtAuNPs and synergistic effect of bimetallic PtAuNPs and graphene nanomaterials.
研究领域:
材料科学
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电化学
·
生物传感
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2014
·
IF 1.61
Pengjun Zhao,Lei Wang,Liang Bian,Jinbao Xu,Aimin Chang,Xinqian Xiong,Fanglong Xu,Jiaqi Zhang
Three-dimensional hierarchical structure coral-like BaTiO 3 nanoparticles have been self-assembled by a facile one step hydrothermal method . Cetyltrimethyl ammonium bromide (CTAB), Ba(OH) 2 ·8H 2 O and tetrabutyl titanate have been used as precursors. The prepared BaTiO 3 exhibits cubic perovskite phase at room temperature, and the coral-like architecture is a micro-nano hiberarchy consisted of dendrimer-like structure and trunk-like structure. By adjusting the hydrothermal duration and the precursor substances, a surfactant induced mechanism is proposed to understand the self-assembly process. UV-vis measurement demonstrates that the as-prepared BaTiO 3 nanoparticles exhibit dozens of times overwhelming absorptive character compared to the ordinary nanospheres at ultraviolet band, which is benefited from the coral-like porous framework. Moreover, halogen anions( F − , Cl − , Br − , and I − ) have been chosen to adjust the coral-like BaTiO 3 physical properties. Results show the halogen doping produces distinct modulation effect on the grain size, UV-vis absorbance and photoluminescence properties of the materials. The coral-like BaTiO 3 nanoparticle and its halogen modified ramifications offer significant opportunities to develop nano-laser devices, photon detectors, photocatalyst based on BaTiO 3 perovskite materials.
研究领域:
材料科学
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纳米技术
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhang-Min Li,Shu-Xian Zhu,Fei-Feng Mao,Yan Zhou,Wenshuai Zhu,Duan-Jian Tao
Currently available aerogels as effective adsorption materials for capture of trace sulfur dioxide (SO 2 ) are unfavorable from the perspective of deep desulfurization technologies. Herein, four phenolic resin-based aerogels with controlled structures varying from spherical (∼1 μm) to nanofiber (∼20 nm) were prepared and characterized using hexadecyl trimethyl ammonium bromide (CATB) as a soft template. It is demonstrated that adjusting the usage amount of CTAB from 0.00 to 0.15 g could effectively regulate SO 2 adsorption capacities of phenolic resin-based aerogels. AG-0.15 nanofiber aerogel exhibited an outstanding SO 2 uptake through a swelling mechanism (10.58 mmol g −1 at 298.2 K, 1.0 bar), and displayed a very high SO 2 /N 2 selectivity (7271 at 298.2 K). Moreover, AG-0.15 nanofiber aerogel also had excellent performance for selective capture of 2000 ppm SO 2 in the mixed SO 2 /N 2 /CO 2 gases through dynamic column breakthrough experiments. Overall, phenolic resin-based nanofiber aerogels are perceived as a promising adsorbent for effective removal of trace SO 2 from flue gas.
研究领域:
材料科学
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环境科学
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Jinxu Zhang,Fusheng Yang,Tao Fang,Bin Wang,Qingyuan Yang,Zhen Wu,Zaoxiao Zhang
The N-ethylcarbazole/dodecahydro-N-ethylcarbazole system, which offers advantages such as excellent hydrogen storage capacity, good reversibility, and reliable safety, is recognized as a potential candidate for hydrogen storage. However, the inefficient dehydrogenation by existing catalysts limits the commercial application of the system. In this work, CTAB was used as the soft template to increase the specific surface area of CeO 2 supports, and further the active metals were formed upon them through various reduction methods. A series of Pd/CeO 2 catalysts were thus prepared, among which Pd/CeO 2 –C6 adopted a composite strategy of using CTAB as the template to increase the specific surface area of CeO 2 and enhancing the dispersion of Pd through ultrasound assisted reduction, showed the best catalytic dehydrogenation performance for 12H-NEC. After 7 h of reaction at 453 K, the conversion rate of 12H-NEC reached 100 % with 97.24 % of hydrogen released. Combining BET, HRTEM, XPS, CO-pulse chemisorption and other characterization analyses, it was found that the incorporation of CTAB effectively enhanced both the specific surface area and oxygen vacancy concentration of CeO 2 , while ultrasound assisted reduction enabled a small particle size and good dispersion of metal Pd on the support. The strong synergetic effects of support and active metal in Pd/CeO 2 –C6 catalyst largely accounts for its good catalytic performance. This work offers valuable insights and guidance for the development of efficient dehydrogenation catalysts for 12H-NEC.
研究领域:
催化化学
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材料科学
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高影响因子
Analytical Methods
·
2018
·Vol. 10
·期 26
·3170-3177
·
IF 2.073
Fugang Xu,Huasheng Lai,Hui Xu
An efficient SERS substrate composed of gold nanocone arrays with abundant sharp tips directly grown on 3D porous Ni foam (AuNCA@Ni foam) was developed for sensitive detection of aromatic dyes. The AuNCA@Ni foam was prepared by a facile galvanic replacement reaction between Ni foam and HAuCl4 in the presence of cetyltrimethylammonium bromide (CTAB). The concentration of CTAB played an important role in determining the morphology of the product. Without CTAB or replacing CTAB with other surfactants, no AuNCA could be obtained. Thanks to the abundant uniform sharp tips and 3D porous structure, the AuNCA@Ni foam displayed much stronger SERS enhancement ability and higher reproducibility for aromatic dye detection compared with substrates prepared in the absence of CTAB or in the presence of other surfactants. Moreover, the AuNCA@Ni foam with the robust integrated structure also avoided the tedious operation of assembly and centrifugation. The SERS application of the AuNCA@Ni foam was tested by the detection of aromatic dyes crystal violet (CV) and Nile blue (NB), which achieved a detection limit (LOD) of 0.03 nM and 0.5 nM in standard solution, respectively, and an LOD of 3 nM for determining CV in real water samples.
研究领域:
材料科学
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分析化学
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RSC Advances
·
2019
·Vol. 9
·期 28
·16028-16034
·
IF 3.049
Weiwei Zou,Hao Xie,Yang Ye,Weihai Ni
In many applications, the optical cross sections of gold nanorods (AuNRs) are required to be tailored at a fixed target longitudinal surface plasmon resonance (LSPR) wavelength depending on the excitation source and the photodetector. In this work, we demonstrate the fine tailoring of optical cross sections of AuNRs at a fixed target resonance wavelength, on the basis of AuNR overgrowth using a binary surfactant mixture consisting of 5-bromosalicylic acid (BSA) and cetyltrimethylammonium bromide (CTAB). A systematic study was performed on the sum effects of the BSA concentration and the volume of the growth solution, which gives a formula for quantitative instructions. Based on the formula, we gave examples for the successful synthesis of AuNRs with different optical cross sections at target LSPR wavelengths. From simulation, a nonlinear relationship was further derived to understand the relationship between the aspect ratio and the width of the AuNRs at a target LSPR wavelength for the dimension design of AuNRs. The ratio of optical against physical cross sections was calculated and plotted as a function of the width. The results clearly indicate that AuNRs with a width of 30 nm possess the highest efficiency in terms of optical per physical cross section. Our study provides reliable methods for the synthesis, as well as guidelines for the dimension design of AuNRs, for use in a variety of applications.
研究领域:
纳米材料学
·
光学
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PubMed
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2019
·Vol. 92
·期 3
·652-661
·
IF 1.986
Li Xiaohua,Yang Zichun,Li Kunfeng,Zhao Shuang,Fei Zhifang,Zhang Zhen
In this paper, transparent flexible hydrophobic silica aerogels were prepared by replacing the traditional alcohol solvent with water, using methyltriethoxysilane (MTES) and cetyltrimethylammonium bromide (CTAB), via acid-base two steps method and CO 2 supercritical drying. The role of surfactant CTAB in the gel–sol process was revealed, and the effect of CTAB concentration on the gel structure was analyzed. With the concentration increasing, the skeleton structure of the gel gradually changed from coarse graininess to continuous fiber. The obtained aerogels showed good elastic properties. With the increasing of density, the elastic modulus of aerogels gradually increased, so that the length could be restored to 63% of the original length after 50% compression strain. Aerogels also had low thermal conductivity and good thermal stability. The thermal conductivity at room temperature was only 0.0215 W/(m·K) and the initial decomposition temperature was up to 511 °C. For the aerogel with thickness of 11.8 mm and density of 60 mg/cm 3 , it showed good sound absorption and sound insulation properties. When the sound frequency was 2000 Hz, the sound absorption coefficient was 0.91, and the sound transmission loss between 500 and 1600 Hz was 13–21 dB. This work provides a facile approach to fabricate lightweight and flexible silica aerogels for thermal and acoustic insulation applications.
研究领域:
材料科学
·
化学工程
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高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2023
·
IF 7.8
Yishuai Jing,Tianxin Kang,Peng Hu,Haibo Fan,Feng Teng,Xin Zhao,Jiaming Song
Recently, rare earth (RE) elements and their oxides have been attracting more and more attention in the field of photocatalytic degradation . Due to the unique 4 f electronic structure and optical properties , the RE element, europium (Eu), together with its oxides, are often used for surface modification of other photocatalysts . Nevertheless, the photocatalytic degradation property of europium oxide has been rarely reported. In this study, we synthesized Eu 2 O 3 nanoparticles via chemical precipitation and calcination processes, and performed surface modification by using surfactants as polyvinyl pyrrolidone (PVP) and hexadecyl trimethyl ammonium bromide (CTAB). Compared with pure Eu 2 O 3 nanoparticles and those synthesized with PVP, photocatalytic degradation efficiencies of Eu 2 O 3 nanoparticles synthesized with surfactant CTAB for degrading rhodamine B dye demonstrated to be improved by 16% and 12%, respectively. The ultraviolet-visible diffuse reflectance spectra measurements indicate that CTAB can increase the bandgap of Eu 2 O 3 due to the reduction of oxygen defects. Photoluminescence spectra demonstrate that the surfactant would affect the luminescence of Eu 3+ and carrier redistribution of energy levels.
研究领域:
材料科学
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环境科学
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