Membranes
·
2025
·Vol. 15
·期 7
·197
·
IF 3.6
Jiale Zhang,Huixin Dong,Fei Guo,Huijun Yi,Xiaobin Jiang,Gaohong He,Wu Xiao
In this work, HNTs@ZIF-67 composites were synthesized using the in situ growth method and incorporated into 6FDA-TFMB to prepare mixed-matrix membranes (MMMs). Scanning electron microscope (SEM) and transmission electron microscope (TEM) proved that the HNTs@ZIF-67 composite not only retained the hollow structure of HNTs, but also formed a continuous ZIF-67 transport layer on the surface of HNTs. The results of gas permeability experiments showed that with the increase in HNTs@ZIF-67 incorporation, the He permeability and He/CH4selectivity of MMMs showed a trend of increasing first and then decreasing. When the loading is 5 wt%, the He permeability and He/CH4selectivity of MMMs reach 116 Barrer and 305, which are 22.11% and 79.41% higher than the pure 6FDA-TFMB membrane. The results of density functional theory (DFT) and Monte Carlo (MC) calculations reveal that He diffuses more easily inside ZIF-67, HNTs and 6FDA-TFMB than CH4, and ZIF-67 shows larger adsorption energy with He than HNTs and 6FDA-TFMB, indicating that He is easily adsorbed by ZIF-67 in MMMs. Based on experimental and molecular simulation results, the mechanism of HNTs@ZIF-67 improving the He/CH4separation performance of MMMs was summarized. With the advantage of a smaller molecular kinetic diameter, He can diffuse through ZIF-67 on the tube orifice of HNTs@ZIF-67 and enter the HNTs’ hollow tube for rapid transmission. At the same time, He can also be rapidly transferred in the continuous ZIF-67 transport channel layer, which improves the He permeability and the He/CH4selectivity of MMMs.
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DOI
PubMed
高影响因子
Food Bioscience
·
2025
·
IF 5.9
Junkui Li,Chen Li,Wang Guo,Yiqing Guo,Xiaobo Zou,Zongbao Sun
Gutter oil, which poses a serious threat to human health and has generated widespread attention in recent years, is misused as cooking oil, creating a major food safety concern. Capsaicin has been identified as a promising indicator for the detection of gutter oil. Hence, in this study, we introduce a novel hybrid approach for capsaicin detection that combines magnetic molecular imprinting (MMIP) with surface-enhanced Raman scattering (SERS) technology to rapidly and accurately identify gutter oil. A magnetic molecularly imprinted polymer is developed with the incorporation of purified halloysite nanotubes, which provide a large specific surface area. The resulting product, magnetic halloysite molecularly imprinted polymers (MHNTs@MIPs), serves as a specific isolation material for the enrichment of capsaicin from complex matrices. The Ag NPs@Si (silver nanoparticles deposited on a silicon wafer surface) and Au NPs (gold nanoparticles), known for their excellent signal enhancement capabilities, work synergistically as the SERS substrate. Substantially enhanced SERS peaks are observed at 1173 cm −1 , indicating the potential of this method for capsaicin detection and gutter oil identification. A strong log-linear relationship between SERS intensity and the logarithm of capsaicin concentration is established across a wide range of 0.05–100 μM, with a detection limit of 67.7 nM. Furthermore, for both simulated and real gutter oil samples, capsaicin recovery rates of 95.5%–110.3% and 96.3%–104.9% were achieved using the SERS sensor, demonstrating good consistency with certified high-performance liquid chromatography (HPLC) results. Therefore, this SERS sensor can be served as efficient method for detecting capsaicin and monitoring oil quality.
研究领域:
食品安全
·
分析化学
·
纳米技术
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DOI
高影响因子
POLYMER COMPOSITES
·
2021
·Vol. 42
·期 12
·6816-6826
·
IF 3.171
Changhong Lin,Puyou Ying,Min Huang,Ping Zhang,Tao Yang,Gang Liu,Jianbo Wu,Vladimir Levchenko
The permanently chemically cross-linking solid–solid phase change materials (SSPCMs) were designed to solve the problem of leakage and poor shape stability during the whole process of phase transformation. However, these materials lead to environment pollution and resources waste because of the non-recyclability. Therefore, a SSPCMs was fabricated using dynamic thermal reversible Diels–Alder bonds. The prepared SSPCMs exhibited excellent shape, heat storage stability, and reliability and reprocessed ability, resulting from dynamic Diels–Alder bonds. Moreover, the Halloysite nanotubes decorated with Fe 3 O 4 nanoparticles (HNTs@Fe 3 O 4 ) were used to enhance the thermal conductivity of SSPCMs. When the filler content was 0.5 wt%, the best integrated properties (phase change properties and thermal conductivity) of the SSPCMs were obtained, it had the highest melting and freezing phase change enthalpies about 116.8 and 127.2 J/g, and thermal conductivity value, 0.223 W/m K, which was 101% higher than pure SSPCMs. Hence, the prepared SSPCMs can be considered as promising save-energy, friendly-environment thermal management materials.
研究领域:
材料科学
·
能源存储
·
纳米技术
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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Boyuan Ran,Ziyang Guo,Yanli Zhang,Yujie Qiang,Jiancheng Wang,Baomin Fan,Tengfei Xiang
Corrosion of steel structures in reinforced concrete structures in coastal areas has long been an urgent concern. In this study, a combined corrosion inhibitor , consisting of benzotriazole (BTA) and sodium D-gluconate (SD), was loaded onto halloysite nanotubes (HNTs) using the vacuum negative pressure method. Then, the HNTs were encapsulated with biomass polyelectrolytes sodium alginate (SA) and chitosan (CS) by layer-by-layer self-assembly technique to prepare BTA/SD-HNTs@CS/SA (FHNTs) composite. Furtherly, a functional epoxy coating (FEP) with pH-responsive and long-term service ability was successfully fabricated. It is found that BTA/SD was released in large quantities under alkaline (pH = 11) and acidic (pH = 2) conditions, while essentially no release under neutral condition. The electrochemical impedance spectroscopy (EIS) measurements demonstrate that the corrosion protection ability of FEP was significantly stronger than pure epoxy coating (EP), and the addition of 2 % FHNTs having the most excellent anticorrosion performance with the maximum charge transfer resistance ( R ct ) value (4.8 × 10 6 Ω cm 2 ) after 4 weeks of immersion, which was 2 orders of magnitude greater than the pure EP coating. Particularly, molecular dynamics (MD) simulations indicate that FEP coating has better barrier properties than EP, while the fractional free volume (FFV) value of H 2 O and Cl − in EP was 9.1 % and 5.1 %, respectively, whereas this value decreased by about 15 % to 7.7 % and 4.4 % in FEP. The results of density functional theory (DFT) calculations suggest that the released BTA and SD molecules have a synergistic adsorption effect on the surface, which can form a compact film to hinder the invasion of corrosive species. Overall, this study provides new insights for developing smart pH-responsive and superior anticorrosion coatings.
研究领域:
材料科学
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防腐蚀工程
·
分子动力学模拟
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DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2022
·
IF 4.119
Hongdan Wu,Ming Li,Yehao Zhao,Zhihui Zhou,Shaoqiang Hua,Jian Zhang
MXene two-dimensional (2D) laminate membranes have attracted many researchers in the field of membrane separation due to its adjustable interlayer spacing. However, MXene 2D laminate membranes has been inability to achieve dye desalination due to simultaneous rejection of both dyes and salts in salt-containing dye. The looser MXene/C-HNTs composite forward osmosis (FO) membrane was successfully prepared via vacuum filtering, in which halloysite nanotubes modified with cetyltrimethylammonium bromide (C-HNTs) and MXene (Ti 3 C 2 T x ) nanosheets were self-assembled by electrostatic interactions. The insertion of C-HNTs effectively increased the interlayer spacing and enhanced the compression resistance of the composite membranes. With a mass ratio of 1:3 between Ti 3 C 2 T x nanosheets and C-HNTs, the composite membrane's pure water flux was raised to 191.4 L/(m 2 ·h). The insertion of C-HNTs not only enabled the composite membrane to keep a superior dye rejection rate (CR rejection rate >99%), but also effectively reduced the rejection rate of monovalent salt (NaCl <5%) and divalent salt (<13% and <10% for Na 2 SO 4 and MgSO 4 , respectively).
研究领域:
膜科学
·
材料科学
·
环境工程
·
纳米技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yunlei Zhang,Yu Cao,Changhao Yan,Wenyun Liu,Yao Chen,Wen Guan,Fang Wang,Yiran Liu,Pengwei Huo
Upgrading bioderived 5-hydroxymethylfurfural (HMF) to high value-added bioplastic monomer 2,5-furandicarboxylic acid (FDCA) is a promising route for biomass conversion. Developing an efficient supported metal catalyst and clarifying the structure–activity relationship between the support and active sites is the key to boost FDCA production. Herein, ZrO 2 coated on natural and abundant halloysite nanotubes (HNTs) was synthesized and employed as a support for Au nanoparticles loading. The Au-ZrO x interface active sites were successfully engineered, and the active site amount can be rationally tailored by adjusting the crystal phases of ZrO 2 via changing calcination temperature. A combination study of catalysts surface physicochemical properties and catalytic activity reveals that oxygen vacancies (O v ) play a vital role in enhancing the adsorption of O 2 . Meanwhile, interface active sites facilitate the chemisorption and activation of O 2 molecules, which makes it easier to produce oxygen active species (superoxide radicals). More importantly, in-situ infrared spectroscopy and adsorption experiments also demonstrate that the catalyst with a higher O v concentration not only contributes to a stronger Lewis acid intensity, but also enhances the adsorption capacity of a key intermediate 5-hydroxymethyl-2-furancarboxylic acid (HMFCA), thus leading to an acceleration of the rate-determining step of hydroxyl group oxidation. The highest 99.4 % of FDCA yield can be obtained in 3.0 h. This newly proposed model of interface active sites may shed a light on the design of novel heterogeneous catalysts for the related biomass oxidation reactions.
研究领域:
催化
·
材料科学
·
化学工程
·
生物质转化
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DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2024
·
IF 5.8
Lingshan Li,Qian Zhou,Jingyi Zhao,Yuangong Zhang,Zhaolei Jia,Xuan Liu,Hailei Zhang,Xinwu Ba,Libin Bai
Multiblock copolymer macrochain-transfer agents (MBP-CTAs) can be used to synthesize MBPs in one pot via reversible addition-fragmentation chain-transfer (RAFT) polymerization. MBP-CTAs can be efficiently synthesized via a copper-catalyzed azide-alkyne cycloaddition reaction. However, traditional purification methods cannot sufficiently purify MBP-CTAs, resulting in the failure of RAFT. In this study, it was discovered that using a supported catalytic system, namely, Cu@A-HNTs, inhibited the connection between Cu and S. The residual Cu content in the MBP-CTA was successfully reduced to a low level (7.88 µg/mg). Then, hydrophilic and hydrophobic MBPs were synthesized through RAFT polymerization using the MBP-CTAs. Subsequently, multiblock copoly(methyl methacrylate-b-butyl methacrylate-CTA)s (PMMA-b-PBMA-c-CTA)s were successfully prepared. The MBP-CTAs and MBPs were characterized using ultraviolet–visible spectroscopy, 1 H nuclear magnetic resonance, size-exclusion chromatography, matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry, differential scanning calorimetry measurements and uniaxial tensile tests. The results of performance testing of PMMA-b-PBMA-c-CTAs demonstrated that their fracture stress and strain significantly increased comparing with that of PMMA-b-CTAs.
研究领域:
高分子化学
·
材料科学
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DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2020
·
IF 6.785
Huadong Zhang,Huasheng Lai,Xiangrong Wu,Gongke Li,Yufei Hu
Fast and accurate practical sample detection is a great challenge in on-site detection. Herein, we developed a CoFe2O4@HNTs/AuNPs substrate for rapid and efficient magnetic solid-phase extraction (MSPE) surface-enhanced Raman scattering (SERS) detection of aromatic amines and nitrofuran in real samples all-in-one. Magnetic CoFe2O4 beads filled inside halloysite nanotubes (HNTs) can avoid aggregation of particles, endow the substrate with the rapid magnetic separation ability to simplify the pretreatment procedure, and reduce complex matrix interference. Meanwhile, outer surface AuNPs can generate electromagnetic enhancement and hot spots to amplify Raman signals of target molecules enriched/concentrated by HNTs. The CoFe2O4@HNTs/AuNPs substrate exhibited excellent SERS activity (high sensitivity, good reproducibility, and repeatability), pH stability (3.0–11.0), and good MSPE ability (fast magnetic enrichment/separation ability within 5 min). The CoFe2O4@HNTs/AuNPs MSPE SERS substrate can be applied for the determination of 4,4′-thioaniline and nitrofurantoin with a linear range of 0.054–21.7 mg/L and 0.05–1.0 mg/L, and the limits of detection were down to 0.026 mg/L and 0.014 mg/L, respectively. Furthermore, the enhancement factor (EF) of the substrate to 4,4′-thioaniline is up to 2.7 × 107. Besides, the substrate can realize practical SERS determination of trace 4,4-thioaniline in cosmetics and nitrofurantoin in fish feed and aquatic samples. The recoveries were varied from 71.6% to 103.6% for 4,4-thioaniline in hair dyes and 81.9% to 116.3% for nitrofurantoin in fish feed and aquatic samples, respectively. Such a robust and efficient MSPE SERS substrate possesses great potential in rapid detection (within 15 min) for a practical sample, and it also provides a methodology for the preparation of other HNTs-based composites.
研究领域:
分析化学
·
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
IONICS
·
2026
·
IF 3.4
Du Yongli,Cao Yongfan,Cao Zhenzhu,Wang Liying
Composite solid electrolytes (CSEs) have both high safety and long cycle life, and are the key materials for the next-generation lithium batteries. However, due to low ionic conductivity and poor interfacial compatibility, their practical application in high-energy-density lithium metal batteries is limited. This work introduces one-dimensional (1D) halloysite nano tube (HNT) into a Polyvinylidene fluoride (PVDF)/ lithium bis(trifluoromethanesulfonyl)imide (LiTFSI)/ Li 6.85 La 2.95 Yb 0.05 Zr 1.85 Ta 0.15 O 12 (LLYZTO) CSE (PLLH- x ), and investigates its effect on the structure, mechanical and electrochemical properties. HNTs nanotubes with external negative and internal positive electrical polarity, can construct continuous lithium ions (Li⁺) transport pathways between LLYZTO particles and delay the diffusion of TFSI - anion. The obtained PLLH-7 electrolyte has an ionic conductivity of 8.52 × 10 -4 S cm -1 , a Li⁺ transference number of 0.80 and a mechanical strength of 12.3 MPa. The Li symmetric cells assembled based on it exhibit long cycle stability for 2400 h and realize effective inhibition of lithium dendrites. The Li/PLLH-7/LiFePO 4 (LFP) battery still has a discharge specific capacity of 131.6 mA h g -1 after 350 cycles at 0.2 C, with the Coulombic efficiency of 95.4%, showing excellent cycle stability. The Li/PLLH-7/LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) battery also exhibits excellent high-voltage and high-rate tolerance, with the specific capacity maintaining at 124.1 mA h g -1 after 500 cycles at 1 C. This study provides an effective method to improve the ionic conductivity, mechanical and electrochemical property of PVDF composite electrolyte.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Chongming Wang,Sujie Shan,Zhengyu Yang,Xinpeng Xu,Xingning Huang,Xi Li,Songqi Liu,Boling Li,Yao Xu,Dapeng Li
Mounting evidence indicates that eliminating phosphate (P i ) alone is not enough to lower outbreak risks of undesirable algae, and synchronously sequestrating organic phosphorus species (OPs) dissolved in overlying water and residing in sediments cannot be ignored. However, more efforts were focused on the immobilization of P i than OPs because of insufficient understanding and analytical challenges. Herein, CaO 2 -loaded halloysite nanotubes/lanthanum-crosslinked sodium alginate (La-CaO 2 @HNTs/SA) hydrogel beads were newly developed and employed as a capping material for efficiently sequestrating P i and OPs from eutrophic water and sediment. Batch sorption results showed that the La-CaO 2 @HNTs/SA has a high uptake capacity towards P i (i.e., 44.05 mg-P/g) and Myo -inositol hexakisphosphate (IHP, a representative pollutant of OPs, 36.28 mg-P/g), and good selectivity for P in the presence of NO 3 – , Cl − , and HCO 3 – , profited by synergy of electrostatic attraction, inner-sphere complexation, surface precipitation, and partial degradation. After applying La-CaO 2 @HNTs/SA, P levels in overlying water could rapidly reduce from 0.95 to 0.01 mg-P/L within 120 min. Further thin-layer capping experiments (60 days) indicated that La-CaO 2 @HNTs/SA performed very well in immobilizing P i and OPs in overlying and pore waters and enhancing reductant-soluble P transformation (BD-P; ∼19 % to 11 %) to more stable HCl-extracted P (HCl-P; ∼33 % to 43 %) in sediments under continuous P input, with minor effect on benthic microorganisms. These findings advance the use of eco-friendly La-CaO 2 @HNTs/SA in eutrophication alleviation via simultaneous sequestration of P i and OPs.
研究领域:
环境科学
·
水污染治理
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Ruidan Li,Li Tian,Yujia Song,Yanjia Guo,Guangping Ma,Pengfei Han,Hanyue Jiang,Wenzhuo Wang,Juan Lu
A self-supporting material of ZnNi 2 O 2 was synthesized and halloysite nanotubes (HNTs) served as carriers for Ru(bpy) 3 2+ , enhancing stability of the sensor and improving the electrochemiluminescence (ECL) value in this experiment. The ECL sensor for specific recognition of melamine (MEL) was developed based on ZnNi 2 O 2 and Ru(bpy) 3 2+ @HNTs as dual ECL reagents. The maximum initial signal was obtained in the presence of co-reactant tripropylamine (TPrA) through the synergy of ZnNi 2 O 2 and Ru(bpy) 3 2+ @HNTs. A molecularly imprinted polymer (MIP) containing specific recognition sites for MEL was to enable selective recognition, with pyrrole serving as the functional monomer and MEL as the template molecule. The quenching effect was observed as the concentration of MEL increased. Under optimal conditions, the sensor demonstrated the linear correlation between the change of ECL signal and the logarithm of MEL concentration from the range of 1.0 × 10 −12 to 1.0 × 10 −7 mol·L −1 . Satisfactory results were obtained for the detection of MEL in milk powder.
研究领域:
分析化学
·
传感器
·
纳米技术
·
食品安全
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Food Packaging and Shelf Life
·
2025
·
IF 10.6
Yanqing Li,Xuchen Li,Shaomei Li,Jiao Li,Xiang Zou,Hongwei Zhan,Guanyuan Qu,Lixiu Zhang,Yongjun Sun,Wenming Ju,Mengqi Ye,Pengdong Sun,Jingyuan Li,Yang Deng,Ting Ding
Aeromonas sobria , recognized as a psychrotrophic specific spoilage organism in refrigerated aquatic products, facilitates its proliferation by metabolizing proteins, lipids, and carbohydrates, thereby generating spoilage-associated metabolites and compromising product quality. Quorum sensing (QS), a bacterial cell-to-cell communication mechanism, orchestrates the secretion of virulence and spoilage factors in A. sobria via the LuxI/R QS system. Targeting this regulatory pathway presents a novel strategy to mitigate spoilage and extend the shelf life of aquatic products. Previous studies have demonstrated that zingerone (ZRN) exhibits quorum-quenching activity at sub-inhibitory concentrations; however, its practical application is constrained by limited solubility and bioavailability. To overcome these challenges, ZRN was encapsulated within halloysite nanotubes (HNTs) and incorporated into a self-assembled composite film composed of chitosan (CS) and sodium carboxymethyl cellulose (CMC-Na). The fabricated film was characterized for its structural, thermal, and mechanical properties and subsequently evaluated for its preservation efficacy on refrigerated perch fillets. The composite film exhibited a homogeneous surface morphology with uniformly dispersed HNTs, alongside adequate thermal stability, tensile strength, and physicochemical attributes suitable for refrigerated aquatic product preservation. Notably, the film suppressed spoilage indicators, including total volatile basic nitrogen (TVB-N) accumulation, lipid peroxidation, and bacterial spoilage potential, without inhibiting A. sobria growth. Furthermore, it mitigated muscle tissue degradation and biogenic amine formation in perch fillets during refrigerated storage. Molecular docking simulations revealed that ZRN competitively binds to the LuxR-type receptor at the same binding pocket as the endogenous autoinducer C 4 -HSL, thereby disrupting QS signaling. Collectively, this ZRN-loaded composite film represents a promising biodegradable packaging solution for enhancing the quality and shelf life of refrigerated aquatic foods.
研究领域:
食品微生物学
·
食品保鲜
·
纳米技术
·
细菌通讯
·
材料科学
·
水产品加工
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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）