CHEMICAL PHYSICS LETTERS
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2019
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IF 1.901
Xuteng Xing,Xiaoyang Xu,Jihui Wang,Wenbin Hu
A novel multi-corrosion inhibitors-halloysite nanocomposite was successfully synthesized by stepwise loading 2-Mercaptobenzothiazole (MBT) and benzotriazole (BTA) into halloysite nanotubes (HNTs), then the insoluble Cu-BTA complex was introduced at the end of HNTs (defined as “Cu-BTA-MBT-HNTs”) to control the release rate of MBT and BTA. The prepared Cu-BTA-MBT-HNTs can not only reduce the release rate of MBT and BTA for achieving the sustained release effect, but also an acid-response complex corrosion inhibitors. Moreover, the Q235 steel in 3.5% NaCl + Cu-BTA-MBT-HNTs solution owns high inhibition efficiency. Therefore, the Cu-BTA-MBT-HNTs can be a very promising multi-corrosion inhibitors-halloysite nanocomposite.
研究领域:
材料科学
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腐蚀与防护
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2020
·Vol. 138
·期 2
·49668
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IF 2.52
Yuanyuan Li,Peixian Li,Minjie Wu,Xiaoyan Yu,Kimiyoshi Naito,Qingxin Zhang
Polylactic acid (PLA) polymers are promising substitutes for polluting fossil fuel-derived polymers in the field of food safety due to their environmental friendliness, good biocompatibility, and degradability. However, their poor mechanical property limits their practical utilization. In this study, abundant natural halloysite nanotubes (HNTs) were incorporated into PLA to address these issues. To overcome interfacial incompatibility between the matrix (PLA) and nanofillers (HNTs), 3-Aminopropyltrimethoxysilane (APS) were firstly grafted onto HNTs to form end-up amino groups which were served as binding sites for the polycondensation of lactic acid precursors. This formed PLA modified HNTs (pHNTs) precursor was further mixed with bulk PLA polymers to prepare the composite films by the solvent casting method. Compared with the pristine composite, the PLA/pHNTs composites show better thermal stability and mechanical properties, and the composite with 2 wt% pHNTs exhibits the best performance.
研究领域:
材料科学
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生物医学工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Puxiang Zhao,Jiaojiao Hu,Yue Feng,Feng Wu,Cuiying Tan,Xiaodan Chen,Mingxian Liu
Copper-based Fenton-like agents have the ability to convert weakly oxidizing H 2 O 2 into highly oxidizing hydroxyl radicals (·OH) at tumor sites during chemodynamic therapy (CDT). In this study, the interfacial attraction properties between the negatively charged OCP − in sodium phosphathynolate (NaOCP) and the positively charged environment inside the lumen of halloysite nanotubes (HNTs) were utilized to synthesize Cu 3-x P nanoparticles in situ within the HNTs. The study investigated the chemical composition , morphology, and structure of Cu 3-x P@HNTs. The results indicated uniform distribution of Cu 3-x P particles measuring 3–5 nm within HNTs' lumen. Experiments conducted internally and externally to cells confirmed the catalytic capability of Cu 3-x P@HNTs to oxidize H 2 O 2 to ·OH. Furthermore, CP@H-CM was synthesized by enclosing Cu 3-x P@HNTs in a cancer cell membrane , which selectively targets cancer cells. The experiments revealed the cytotoxicity of CP@H-CM on 4T1 cells. Additionally, the antitumor efficacy of CP@H-CM was evaluated in vivo through tumor recurrence experiments in mice. Moreover, the efficacy of CP@H-CM in repressing tumor growth was enhanced by incorporating infrared laser , indicating a synergistic photodynamic treatment for breast cancer. This study presents an efficacious and viable therapeutic approach to inhibit postoperative tumor reappearance. The implications of this approach are promising, particularly in the domain of tumor treatment and metastasis.
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PubMed
高影响因子
FUEL
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2023
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IF 7.4
Yuxin Sun,Yunshuo Wu,Yarong Bai,Xuanhao Wu,Haiqiang Wang,Zhongbiao Wu
Iridium nanocatalysts are ideal candidates for the selective catalytic reduction of NO x by CO (CO-SCR) in excess oxygen. Here, a high-performance Ir nanocatalyst supported on natural halloysite nanotubes (HNTs) was applied for the CO-SCR. The HNTs loaded with only 0.5 wt% Ir achieved 78 % NO x conversion at 250 °C in the presence of 5 % O 2 , which was the highest among catalysts with varied Ir loadings or reduction temperatures. It also possessed an excellent SO 2 and H 2 O tolerance during longevity tests. An interesting SO 2 -enhanced CO-SCR long-term stability was observed, which was ascribed to the inhibitory effects of SO 2 on the side reaction between CO and O 2 . The loading amount and the reduction temperature could modulate the size of Ir nanoparticles and the percent of Ir 0 , which were two key factors determining the CO-SCR activity. DRIFTS characterizations and DFT calculations coherently revealed the favorable adsorption sites of CO (top) and NO (hcp) on Ir nanoparticles. The Ir atoms served as a charge transfer bridge from the C atom of CO to the N atom of NO, leading to the enhanced breakage of N-O bonds. This work provides Ir/HNT as a promising CO-SCR material with high performance and robustness to tackle NO x pollution.
研究领域:
环境科学
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催化化学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Zixi Zheng,Shuo Wang,Fu Yang,Jianming Pan
Lead pollution particularly in blood seriously threatens the health of people, thereby, efficient removal of lead becomes very emergent. Natural adsorbents with surface specific functionality might be promising and selective for the alternative adsorption of lead. To explore the effects of different functional ligand modifications on lead(II) adsorption over halloysite nanotube (HNTs), HNTs adsorbents grafted with (3-Aminopropyl) trimethoxysilane (APTES), (3-Mercaptopropyl) trimethoxysilane (MPTMS), Ethylenediaminetetraacetic acid (EDTA), D-Cystine and Dimercaptosuccinic acid (DMSA) were constructed and ensuingly characterized. The well-defined nanotube structure with abundant functional moieties by grafting speficial organic groups as binding sites was demonstrated as novel clay adsorbents. The practical affecting factors on the Pb(II) adsorption including solution pH, initial concentration, temperature, and contact time were investigated in detail. The adsorption kinetics of Pb(II) over the targeted adsorbents obey the pseudo-second-order model. The optimized HNTs-Cys was demonstrated to afford outstanding Pb(II) adsorption capability ( Q max = 365.02 mg g −1 ) within 10 min and biocompatibility performance and anti-biological fouling ability with a specific 98 % lead removal efficiency from the stimulated blood, outperforming other functional counterparts. The Pb(II) adsorption mechanism by the synergetic chelating interaction of functional moieties of the resulting adsorbents including carboxyl, sulfydryl and amino groups was further indentified through preciously deconvoluting the X-ray photoelctron spectra result. The weakened zeta potential value of functional HNTs further validates the dominant coordination effect of present organic moieties rather than the electrostatic interaction. More importantly, we demonstrated that the high and reinforced selective adsorption of Pb(II) in the stimulated blood by HNTs-Cys when introducing various ions interference, and the adsorptive capacity can be maintained at 70 mg g −1 albiet in mixed system (100 mg/L).
研究领域:
环境科学
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材料科学
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生物医学
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DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
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2025
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IF 5.1
Lu He,Qing-Qing Bi,Yue Ma,De-Yi Wang
Aiming to improve the flame retardancy efficiency and rheological properties of hydroxides commonly used in asphalt, a combined flame retardant was fabricated using aluminium hydroxide (ATH), halloysite nanotube (HNT) and ferrocene. The optimal loading of flame retardant and process parameters for asphalt preparation were determined through an orthogonal experimental design. Through microscopic observation, the combined flame retardant was evenly dispersed within the asphalt matrix, with minimal agglomeration and segregation. Asphalt containing the combined flame retardant achieved an improved limiting oxygen index (LOI) value of 28.1 %, accompanied by a 30.9 % and 41.2 % reduction in peak of heat release rate (PHRR) and peak of smoke production rate (PSPR) compared to conventional Styrene-Butadiene-Styrene (SBS) modified asphalt used in asphalt pavement. In-depth mechanism analysis revealed that the formation of high-quality charring layers was facilitated by the catalytic reaction of ferrocene and catalytic oxidation of gases produced during asphalt combustion. Moreover, the improved network crosslinking function in asphalt significantly enhanced the rheological properties observed in the dynamic shear rheometer (DSR) and multiple stress creep recovery (MSCR) tests. Prospectively, this study provides an effective approach for simultaneously achieving prominent fire safety and enhanced rheological properties of asphalt through a simple preparation method.
研究领域:
材料科学
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火灾安全工程
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2020
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IF 3.573
Yong Zheng,Lufeng Wang,Fulan Zhong,Guohui Cai,Yihong Xiao,Lilong Jiang
As a class of natural clay minerals, the special surface characteristic of the negatively charged outer surface and the positively charged inner lumen enables halloysite to be of potential interest for catalytic applications. In this work, thermal treatment and modification with cetyltrimethylammonium bromide made the outer surface of halloysite hydrophobic, which resulted in the selective loading of palladium on the hydrophilic inner surface of halloysite. The designed site-oriented loading endowed catalysts with the desired structure and favorable properties for methane combustion. Because of the uniformly dispersed palladium particles (ca. 2 nm), a suitable ratio of Pd2+/Pd4+, better reducibility, and appropriate surface acidity, the tailored catalyst exhibited a remarkably higher activity with the T99 decreasing from 620 °C (unmodified catalysts) to 425 °C. More importantly, the stabilized palladium species could resist sintering and the diminishing of hydroxyl groups on the surface weakened the interaction with water, invoking an excellent long-term/cyclic stability and water resistance for methane combustion.
研究领域:
催化化学
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材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
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2025
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IF 2.8
Qian Zhao,Huixuan Li,Yuanyuan Guo,Moqiong Duan,Mu Li,Tao Li,Hongya Li,Shuna Li,Shuxiang Wang,Quan Wang
s: This study aimed to prepare a new separation medium, silane coupling agent KH570- modified halloysite nanotube (MPS-HNT) monolithic column, with excellent separation performance for small molecular compounds and macromolecular proteins. This was prepared using the principle of redox polymerization with modified HNTs as monomers. The optimal monomer proportion was obtained by optimizing the ratio of monomer, cross-linker, and pore-forming agent, which was evaluated using scanning electron microscopy, nitrogen adsorption, and mercury intrusion. The monolithic column exhibited a relatively homogeneous pore structure and good separation performance and permeability. As a high-performance liquid chromatography stationary phase, six small aromatic molecules were successfully separated in 6 min with a theoretical plate count of 35, 640 plates m −1 for benzene. Twenty-one peaks were separated from the fermentation mattress extract containing lipopeptide antibiotics on the MPS-HNT column. The separated chromatographic peaks further identified three lipopeptide antibiotics using matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS) analysis. Twelve chromatographic peaks were isolated from chicken egg whites, and the eighth peak was identified as the lysozyme. The methodological validation of the lysozyme in chicken egg white showed that the linear correlation coefficient was 0.9996. The intraday and inter-day relative standard deviations were 3.1–4.0 % and 1.9–3.4 %, respectively. The spike recovery rate of lysozyme was 94.20–103.31 %. The overall column displayed good stability: the relative standard deviations of the peak area of six aromatic compounds and retention time were < 3.28 %.
研究领域:
分析化学
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生物化学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Shibo Yu,Jiaofan Sun,Jiayan Liu,Mengna Zhan,Wentai He,Yiqing Zeng,Zhaoxiang Zhong,Weihong Xing
Inorganic hierarchical porous fibrous membranes demonstrate significant superiority in filtration, adsorption, and catalysis, while the inherent brittleness of inorganic materials and the mechanical fragility from porous structures pose a critical bottleneck to their durability. To overcome this limitation, halloysite nanotubes (HNTs) were integrated into the porous fibers, acting as “nano-rebars” to construct a robust skeleton. This structure facilitated efficient stress transfer and dissipation, significantly enhancing the mechanical robustness of the membrane and increasing the tensile strength to more than twofold. Leveraging the natural electret effect of HNTs, the fiber membrane achieved an exceptional filtration efficiency of 99.85% for the most penetrating PM 0.3 through additional electrostatic adsorption effects. Furthermore, the HNTs-optimized hierarchical pore structure resulted in a remarkably low filtration resistance of 55.2 Pa, while the filtration quality factor could reach up to 0.118 Pa −1 . Additionally, the fiber membrane exhibited remarkable photocatalytic efficacy for formaldehyde (HCHO) degradation, attaining a removal rate of 82.77% within an exceptionally short residence time of merely 0.18 s. This study elucidates the structure-property relationship in inorganic fiber membranes and provides a promising strategy for developing robust, multifunctional air purification materials capable of withstanding harsh conditions.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Long Zhang,Hui Lin,Zaiwen Zhao,Qi Yang,Jieran Qi,Chunbo Xie,Chenglong Hu,Haibo Zhang
Immobilizing ultrasmall metal nanoparticles without aggregation remains challenging. By exploiting the surface chemical asymmetry of halloysite nanotubes (HNTs), we developed an in-situ confinement strategy for the immobilization of palladium nanoparticles (Pd NPs) within the nanotube lumen. In this study, closo -[B 12 H 12 ] 2− clusters were selectively anchored onto the inner surface of HNTs through a vacuum-assisted process, driven by electrostatic interactions and hydrogen bonding. These surface-anchored clusters subsequently orchestrate the in-situ reduction of Na 2 PdCl 4 , yielding uniformly dispersed Pd NPs confined within the HNTs cavity. This approach effectively suppresses nanoparticle aggregation during synthesis, markedly enhancing catalytic activity. The resulting catalyst with an ultralow Pd loading of only 0.02 wt% (Pd 0.02% @B 12 H 12 @HNT) accomplishes the complete reduction of 4-nitrophenol (4-NP) within 75 s, with a turnover frequency (TOF) as high as 59.60 min −1 . Furthermore, the catalyst demonstrates exceptional operational stability, sustaining its high catalytic performance over 15 consecutive recycling cycles. Notably, the closo -[B 12 H 12 ] 2− clusters serve a dual function as both an in-situ reducing agent and a stabilizing/protective species, enabling the generation of Pd NPs while preventing their aggregation. This work establishes a versatile and promising paradigm for the rational design of supported metal nanocatalysts with ultralow noble metal loading and superior catalytic efficiency. Download: Download high-res image (136KB) Download: Download full-size image
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高影响因子
POLYMER DEGRADATION AND STABILITY
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2025
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IF 7.4
Tian Qiu,Zexu Hu,Liping Zhu,Xu Jin,Hengxue Xiang,Zhe Zhou,Meifang Zhu
The polyphenylene sulfide (PPS) fiber, renowned for its exceptional heat and chemical resistance, finds extensive applications in high-temperature filtration, protective clothing, electronics, automobile and aircraft sectors. However, the oxidation susceptibility of PPS fiber at elevated temperature significantly restricts its practical applications. In this study, a PPS nanocomposite fiber with improved oxidation resistance is prepared by incorporating a low content of antioxidant TH-1790 loaded halloysite nanotubes (T-HNTs) via melt spinning. The successful loading of TH-1790 into HNTs is demonstrated through TEM, TGA and FT-IR. The PPS/T-HNTs nanocomposite fiber with 0.6 wt% of T-HNTs performs the best during the mechanical test, showing a higher breaking strength (4.63 cN/dtex) than others. In addition, an increase of 16.9 °C is found for the maximum weight loss temperature (T max ) of the 0.4 wt% T-HNTs loading sample by TGA, suggesting a better thermal stability. Most importantly, the retention rate of breaking strength is found to be 91.0 % for PPS/T-HNTs-0.6 nanocomposite fibers while that of the pure PPS is only 79.1 % after thermo-oxidative aging. This work provides an effective and accessible method for improving the thermal stability and oxidation resistance of PPS fibers, which thereby helps to extend the applications of PPS fibers in high temperature environment.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2017
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IF 4.233
Meriem Fizir,Pierre Dramou,Kai Zhang,Cheng Sun,Chuong Pham-Huy,Hua He
In this research, novel polymer grafted-magnetic halloysite nanotubes with norfloxacin loaded (NOR-MHNTs) and controlled-release, was achieved by surface-initiated precipitation polymerization. The magnetic halloysite nanotubes exhibited better adsorption of NOR (72.10 mg g −1 ) compared with the pristine HNTs (30.80 mg g −1 ). Various parameters influencing the drug adsorption of the MHNTs for NOR were studied. Polymer grafted NOR-MHNTs has been designed using flexible docking in computer simulation to choose optimal monomers . NOR-MHNTs/poly (methacrylic acid or acrylamide- co -ethylene glycol dimethacrylate) nanocomposite were synthesized using NOR-MHNTs, methacrylic acid (MAA) or acrylamide (AM), ethylene glycol dimethacrylate (EGDMA) and AIBN as nanotemplate, monomers , cross linker and initiator, respectively. The magnetic nanocomposites were characterized by FTIR, TEM , XRD and VSM . The magnetic nanocomposites show superparamagnetic property and fast magnetic response (12.09 emu g −1 ). The copolymerization of monomers and cross linker led to a better sustained release of norfloxacin ( >60 h) due to the strong interaction formed between monomers and this cationic drug. The cumulative release rate of NOR is closely related to the cross linker amount. In conclusion, combining the advantages of the high adsorption capacity and magnetic proprieties of this biocompatible clay nanotube and the advantages of polymer shell in the enhancement of controlled-sustained release of cationic drug, a novel formulation for the sustained-controlled release of bioactive agents is developed and may have considerable potential application in targeting drug delivery system.
研究领域:
材料科学
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药学
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生物医学工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）