POLYMER COMPOSITES
·
2021
·Vol. 42
·期 7
·3158-3168
·
IF 3.171
Tianxiang Chen,Sina Chen,Jinyun Wang,Tengfei Lin,Weihang Wu,Weijin Yang,Yu Wang
A novel polyvinyl alcohol (PVA)/halloysite nanotubes (HNTs) composite sponge with preferable properties was fabricated via water solution mixing and casting technique with a fixed PVA ratio and the various contents of nano-fillers. The morphology and physical properties of all the samples have been studied and characterized extensively. The results showed that HNTs were uniformly aligned along in the PVA matrix depending on good interfacial interactions between HNTs and PVA matrix. The addition of HNTs decreased the pore sizes and porosity of the sponges. Mechanical tests indicated that the incorporation of HNTs contribute to the reinforcement in mechanical properties of composite sponges under both dry and moist conditions. In addition, the composites showed better performances in thermal stability and water absorption capacity than pure PVA sponges. Rhodamine B and ibuprofen were employed to evaluate the control release ability. The results illustrated that increasing HNT contents can enhance the sustained release ability of PVA sponges.
研究领域:
材料科学
·
生物医学工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yafei Zhao,Shu Guo,Xin Xue,Chengli Xiong,Xiangyang Gao,Bing Zhang
Rational design of efficient, low-cost and eco-friendly catalysts for hydrogen generation from solid-state hydrogen storage material ammonia borane (AB) is identified as an ideal approach for solving the problems of energy crisis and environmental pollution. Herein, we construct a robust and low-cost composite catalyst with the combination of non-noble metal cobalt phosphide (Co 2 P), carbon dots (CDs) and halloysite nanotubes (HNTs), in which CDs serve as the bridge and conductive mediator to link Co 2 P and HNTs for facilitating electron transfer. Attributing to the synergistic effects among Co 2 P, CDs and HNTs, the high conductivity of CDs and the dispersion/supporting of HNTs, the as-prepared Co 2 P-CDs/ m HNTs composite catalyst displays a considerably high hydrogen evolution rate with TOF of 178.02 mol H2 mol co2P −1 min −1 , which is much higher than Co 2 P/HNTs, Co 2 P/CDs and other non-noble metals-based catalysts. This work provides a new insight and bridging strategy for the design of low-cost composite catalysts with excellent performance toward AB hydrolysis.
研究领域:
材料科学
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能源化学
·
环境科学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 30
·e55688
·
IF 2.7
Jiaju Huang,Ping Fan,Junjiong Jiang,Yize Han
Currently, there are few reports of core–shell-structured smoke suppressants that can provide a growth substrate and stabilize the char layer. In response to this problem, core–shell nanoparticles of halloysite nanotubes (HNTs) coated with copper itaconate complex were prepared by layer-by-layer assembly method. The electrostatic forces between HNTs and copper ions and the coordination between the itaconic acid and copper ions contributed this synthesis. The micromorphology, chemical composition, and structure of HNT@CuC 5 H 4 O 4 were characterized, and its effects on the flame-retardant and smoke-inhibition properties, mechanical properties, and thermal stability of the soft polyvinyl chloride (PVC) were investigated. The results showed that the core–shell structure of HNT@CuC 5 H 4 O 4 contributed to its homogeneous dispersion in PVC and the formation of interlocking mesh structure. Thus, the incorporation of HNT@CuC 5 H 4 O 4 enhanced the strength and stiffness of soft PVC without sacrificing its ductility. Besides, copper ions on HNT@CuC 5 H 4 O 4 could promote the cross-linking carbonization of the PVC at high temperature. The formed char layer catalyzed by CuC 5 H 4 O 4 , together with its attached three-dimensional network structure of HNT constituted a compact and continuous char layer with high thermal stability, which effectively prevented the release of combustible volatiles and toxic gases as well as heat transfer.
研究领域:
材料科学
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聚合物科学
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消防安全工程
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2024
·
IF 5.8
Yaning Du,Yangai Liu,Bing Zhu,Qingyu Zhang,Zhaofeng Tian
The practical application and development of lithium-sulfur batteries (LSBs) remains a serious issue as a consequence of the shuttle effect of lithium polysulfides (LiPSs). Halloysite (HNT), a clay mineral with a unique hollow tubular structure, is a potential carrier for sulfur. In this work, we employed a strategic approach to modify both inner and outer surfaces of HNT. We synthesized N-doped carbon-coated thin-wall hollow nanotube HNT composites (A 5 HNT@NC), which were subsequently utilized as sulfur carriers in the cathode of LSBs. This method alleviates the shuttle effect of LiPSs and controls the volume expansion of sulfur during charge-discharge. Acid heat treatment reduced Al-O octahedron in HNT, expanding the inner diameter to enhance the loading of sulfur. A 5 HNT@NC, prepared through phase inversion and high-temperature pyrolysis, effectively enhanced the electrical conductivity of thin-walled HNT, facilitating Li + and electron transfer. Meanwhile, the structure of A 5 HNT@NC effectively adapted volume expansion of sulfur, realized high sulfur loading, and provided abundant active sites for anchoring of LiPSs. Moreover, the incorporation of N elements on carbon layer enhanced the ability to catalyze and adsorb LiPSs. Consequently, A 5 HNT@NC/S cathode exhibited high cycle stability and specific capacity. At 0.2 C, it retained high capacity of 619.7 mAh g −1 after 100 cycles, achieving 84.67 % capacity retention. At a higher current density of 0.5 C, A 5 HNT@NC/S cathode also retained specific capacity of 515.0 mAh g −1 after 300 cycles. This work can expand the application of HNT for energy storage, provide inspiring insights into the design of novel sulfur carrier materials for LSBs.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Jie Chen,Qinqin Zhang,Chenyang Qi,Yipin Zhang,Fuqiang Shi,Jing Tu
Bacterial infectious diseases seriously threaten global public health. The inappropriate use of antibiotics promoted the emergence and widespread of drug-resistant bacteria; thus, nanomaterial-based antibacterial agents are considered promising alternatives to combat bacterial infections. Herein, a near-infrared (NIR) light and hydrogen peroxide (H2O2) dually triggered halloysite nanotube (HNT)-based nanoplatform (HNTs@PDA/PB) as a broad-spectrum antibacterial agent was fabricated via a facile two-step strategy. Specifically, as natural clay materials, HNTs were first coated with a versatile layer of polydopamine (PDA). Then, the catechol groups on the PDA surface served as a chelating and reducing agent, facilitating the in situ growth of Prussian blue (PB) nanoparticles. The as-prepared HNTs@PDA/PB exhibited strong absorption in the NIR region and peroxidase-like activity, which suggested that it can act as a photothermal and Fenton dual-modal agent. Under NIR irradiation and exogenous H2O2, HNTs@PDA/PB exhibited excellent bactericidal activity via photothermal-enhanced chemodynamic therapy against multiple pathogenic bacteria, eliminating 68.0 ± 0.4% of the Staphylococcus aureus biofilm and 61.6 ± 0.3% of the methicillin-resistant S. aureus (MRSA) biofilm. In vivo studies further demonstrated that HNTs@PDA/PB could achieve efficient bacterial eradication and accelerate wound healing. Overall, this versatile HNT-based nanoplatform can serve as a promising therapeutic candidate to fight against bacterial infectious diseases.
研究领域:
纳米技术
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生物医学工程
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材料科学
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微生物学
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治疗学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yuwei Qiu,Xiangyu Chen,Jing Meng,Binghong Luo,Changren Zhou,Mingxian Liu
Microplastic pollution has become a global environmental problem that urgently requiring efficient and recyclable remediation technologies. Herein, direct ink writing (DIW) 3D printing technique was used to construct halloysite clay-based porous ceramics scaffolds (PCS) with a pore-forming agent of polymethylmethacrylate (PMMA) microparticles in ~20 μm. Fe 3 O 4 nanoparticles in ~200 nm is then grown on the PCS surface to prepare Fe 3 O 4 @PCS ceramics to increase the interfacial interactions between the PCS and the nanoscale polystyrene (PS) microplastics. The rheological properties and printability of the halloysite composite ink are investigated, and then the synergistic construction of the multi-scale porous structure is achieved. In a dynamic circulation apparatus, Fe 3 O 4 @PCS can reach a maximum equilibrium adsorption capacity of 18.7 mg/g for 100 mg/L nanoscale PS microplastics at 298 K, with a removal efficiency of 98.7%. The dynamic adsorption process conforms to pseudo-second-order kinetics and the Sips isotherm model, suggesting the heterogeneous multilayer adsorption process with intraparticle diffusion. In complex matrices such as lake water, seawater, cation-interfered water, and simulated organic and biological wastewater, Fe 3 O 4 @PCS maintains a removal efficiency of ~93%. After 10 adsorption-thermal degradation cycles, the nanoscale PS microplastic removal efficiency by Fe 3 O 4 @PCS is higher than 90%, which is superior to most reported adsorbents. This work provides a natural clay based porous materials for efficient, tailorable, and sustainable remediation of nanoscale PS microplastics in aquatic environments.
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Mingke Ding,Weijie Wu,Ruiling Liu,Ben Niu,Huizhi Chen,Xiangjun Fang,Hangjun Chen,Chaoyi Shen,Haiyan Gao
Blueberries are susceptible to microbial contamination and mechanical damage after harvesting, thereby accelerating their quality deterioration. Therefore, in the present work, thyme essential oil@halloysite nanotubes (TEO@HNTs)-loaded pullulan/gelatin/PVA (PGP) aerogels with antimicrobial activities and cushioning properties were developed to address these issues. The results showed that TEO achieved a 91.1 % encapsulation efficiency in HNTs and hydrogen bonding interactions were formed between TEO and HNTs. TEO@HNTs improved the crystallinity, thermal stability, compression properties, and surface hydrophobicity of the PGP aerogels. The TEO@HNTs-loaded aerogels exhibited a sustained release of TEO and antimicrobial activity against E. coli (inhibition zone of 13.92 mm), S. aureus (inhibition zone of 16.55 mm), and B. cinerea . Moreover, the aerogels offered good cushioning for blueberries when subjected to mechanical impact, thus maintaining their quality during storage. In addition, cell cytotoxicity analysis showed that cell viability exceeded 94 %, indicating the excellent biocompatibility of the TEO@HNTs-loaded aerogels. The above results suggested promising prospects for the development of a multifunctional aerogel to maintain the quality of food products, such as blueberries, which are susceptible to microbial contamination and mechanical damage.
研究领域:
食品科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Yiting He,Xin Qi,Zongze Peng,Yunxia Ren,Hongjian Yang,Xiaoli Liu
In this study, halloysite nanotubes (HNTs) were first etched with H 2 SO 4 or NaOH and then loaded with a green corrosion inhibitor (sodium benzoate, SB) under vacuum. Subsequently, a thin layer of tetraethyl orthosilicate (TEOS) was coated for the controlled release of SB. The dispersion of the coated HNTs in epoxy resin was improved by amino functionalization with (3-aminopropyl) triethoxysilane (APTES). The obtained S24HNTs-SB-TEOS-APTES nanocapsules were analyzed by Brunauer-Emmett-Teller (BET), showing that after etching with 5 mol/L of H 2 SO 4 for 24 h, the pore size inside the HNTs increased, and the tubular morphology was maintained. According to the results of UV–visible spectroscopy, SB was released faster in acidic (pH=3) and alkaline conditions (pH=11) than neutral condition. Furthermore, nanocapsules were successfully embedded in epoxy coating used for corrosion protection of carbon steel. The electrochemical impedance spectroscopy (EIS) and salt spray experiments demonstrated that the smart composite coating exhibited outstanding corrosion resistance , and the addition of 3 wt% S24HNTs-SB-TEOS-APTES having the most excellent anticorrosion performance with its impedance at 0.01 Hz maintaining 3.11 × 10 6 Ω⋅cm 2 even after 3 weeks of corrosion immersion.
研究领域:
材料科学
·
腐蚀与防护
·
纳米技术
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Guoqiang Chen,Song Zhang,Bo Jin,Hui Liu
Battery systems are experiencing unprecedented growth due to the unprecedented application of new energy vehicles. However, most materials used in batteries are produced along with high energy consumption, inevitable pollution or other problems. In contrast with these materials, natural mineral resources have their own attractive advantages such as their unique structures formed in long process. Based on the situation and broad prospects of natural minerals utilized in practical solid-state lithium metal batteries (SSLMBs), this research focuses on polydopamine (PDA) modified halloysite nanotubes (HNTs) as the filler to co mpose a composite solid electrolyte (CSE), in which there are still bis-(trifluoromethane)sulfonimide (LiTFSI) as a lithium salt and poly(vinylidene fluoride- co -hexafluoropropylene) (PVDF-HFP) as a polymer. As the one-dimensional (1D) materials, HNTs can provide mechanical strength and flame retardant while PDA adhered to HNTs can improve the dispersion of filler in the electrolyte, capture dissolved transition metal (TM) ions from cathode, and facilitate Li + ion transport. The fabricated CSE in this study exhibits a high Li + transference number of 0.48, a great ionic conductivity of 0.24 mS cm −1 , a broader electrochemical window of 4.8 V, and good cycling performance on Li||Li symmetrical cell for over 1000 h and LiNi 0.5 Co 0.2 Mn 0.3 O 2 ||Li (NCM523||Li) battery, with the capacity retention rates of 90% after 200 cycles at 0.5 C and 83.9% after 400 cycles at 1 C, respectively. Meanwhile, LiFePO 4 ||PHHP||Li (LFP||PHHP||Li) battery also provides a capacity retention rate of 89.6% and an average CE of 99.5% after 100 cycles at 0.5 C. This study introduces a new option for natural mineral materials to be applied to high-performance SSLMBs.
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产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Shuhan Dong,Yue Li,Qianhong Shen,Hui Yang
A promising strategy involving loading corrosion inhibitors into stimuli-responsive nanocontainers provides both physical barrier and active protection, thereby extending coating service life. In this study, a novel nanocontainer was fabricated by loading benzotriazole (BTA) into halloysite nanotubes (HNTs) decorated with in-situ grown MoS 2 nanoflowers. The resulting Cu-BTA/HNTs@MoS 2 nanocontainer exhibited excellent pH-responsive release characteristics. When added to a waterborne epoxy coating, it imparted remarkable corrosion resistance, maintaining an impedance modulus (|Z| 0.01 Hz ) only 36% lower after 45 d of immersion in saline solution, significantly higher than pure epoxy coatings, by two orders of magnitude. This superior performance originates from a synergistic mechanism: the MoS 2 nanosheets create a dense physical barrier that extends the diffusion path of corrosive agents, while HNTs enable acid-triggered release of the BTA inhibitor for active protection. This work presents an innovative strategy for advancing high-durability, self-protective epoxy coatings on Q235 mild steel, offering valuable insights for corrosion-resistant material design.
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产品关联
DOI
高影响因子
FUEL
·
2026
·
IF 7.8
Chunyan Tu,Ruonan Pan,Luhan Liu,Hao Wang,Wenlin Li
A novel defect-engineered strategy was developed to fabricate highly efficient Pd catalysts for the selective hydrogenation of phenol to cyclohexanone. By fine-tuning the post-alkali treatment, we successfully tailored the microstructure of halloysite nanotubes (HNTs) supports, selectively removing Al–OH sites without forming any amorphous structures. This precise engineering allowed for the uniform dispersion of ultrafine Pd nanoparticles within the HNTs’ lumen. A comprehensive analysis using CO-DRIFTS, TEM, H 2 -TPD, CO 2 -TPD, and Py-IR techniques revealed that the Pd/1.2M-HNTs catalyst possessed rich Pd step sites with a strong H 2 dissociation ability. Furthermore, the unique acid–base properties of the modified HNTs support moderate the adsorption strength of cyclohexanone, ensuring high selectivity by promoting its timely desorption and limiting over-hydrogenation. The optimized catalyst exhibited superior catalytic performance with a high turnover frequency (TOF) of 341 h −1 and excellent stability. This work highlights a facile and effective approach to control the support structure at the molecular level, offering new insights for the rational design of catalysts for hydrogenation reactions.
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Kun Hou,Yicheng Zeng,Cailong Zhou,Jiahui Chen,Xiufang Wen,Shouping Xu,Jiang Cheng,Yingguang Lin,Pihui Pi
A durable underwater superoleophobic mesh was conveniently prepared by layer-by-layer (LBL) assembly of poly (diallyldimethylammonium chloride) (PDDA) and halloysite nanotubes (HNTs) on a stainless steel mesh. The hierarchical structure and roughness of the PDDA/HNTs coating surface were controlled by adjusting the number of layer deposition cycles. When the PDDA/HNTs coating with 10 deposition cycles was decorated on the mesh with pore size of about 54 μm, the underwater superoleophobic mesh was obtained. The as-prepared underwater superoleophobic PDDA/HNTs decorated mesh exhibits outstanding oil–water separation performance with a separation efficiency of over 97% for various oil/water mixtures, which allowed water to pass through while repelled oil completely. In addition, the as-prepared decorated mesh still maintained high separation efficiency above 97% after repeated 20 separation times for hexane/water mixture or chloroform/water mixture. More importantly, the as-prepared decorated mesh is durable enough to resist chemical and mechanical challenges, such as strong alkaline, salt aqueous and sand abrasion. Therefore, the as-prepared decorated mesh has practical utility in oil–water separation due to its stable oil–water performance, remarkable chemical and mechanical durability and the facile and eco-friendly preparation process.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）