COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Han Yu,Hongliang Xu,Tianran Hao,Yucao Yuan,Bing Zhang,Hailong Wang,Gang Shao,Bingbing Fan,Hongxia Lu
ZnO/halloysite nanotube composites (ZH-X, X = 10, 30, 40, 50, 70), with different mass ratio of ZnO to halloysite nanotubes (HNTs), were fabricated successfully via a facile wet chemical technique in anhydrous ethanol under a mild reaction condition. ZnO nanoparticles about 9 nm in size were inhibited from agglomeration and loaded homogeneously on the surface of HNTs. The microstructure, specific surface area, light absorption ability, photocatalytic performance, etc. of the ZH-X composites varied with the mass ratio of ZnO to HNTs. All ZH-X composites displayed better photocatalytic performance than pure ZnO sample did. With the increasing of ZnO content, the photocatalytic activity of ZH-X composite toward degrading methylene blue (MB) solution strengthened gradually and reached the maximum by ZH-40 composite (with ZnO content of 28.57 wt%), then decreased step by step. ZH-40 (0.05 g) removed 99.88% of MB (100 mL, 15 mg/L) after adsorption in dark and then photocatalytic degradation for 60 min, and whose photocatalytic reaction rate constant was 5.73 times that of pure ZnO. The enhanced photocatalytic efficiency of ZH-40 composite was attributed to the interfacial effect of ZnO and HNTs as well as the dispersed ZnO nanoparticles, which maintained the adsorption ability of HNTs and improved the separation and migration of photo-generated electron and hole pairs. This work provides a feasible method for loading photocatalyst on clay mineral to realize efficient photocatalysis.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
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2024
·
IF 8.5
Qingqing Li,Yuxin Gong,Ting Du,Liang Zhang,Yiyue Ma,Tong Zhang,Zhiyi Wu,Wentao Zhang,Jianlong Wang
Conventional “all-in-one” methods for multi-component active packaging systems are not wholly adequate for fresh food. Given the need for multifunctional properties, introducing halloysite nanotubes (HNTs) could be a promising way to achieve controllable release of active ingredients while endowing with pH-sensitive performance. Here, we pioneered a GRAS composite with multifunctional properties, employing natural HNTs as a nanocarrier, citral (Cit) as an active antimicrobial agent, and myricetin (Myr) for monitoring freshness. The Cit-HNTs-Myr had excellent DPPH, ABTS and ·OH radical scavenging capacity, dual-model (contact and fumigant) antibacterial properties, and pH-sensitive performance. Subsequently, a smart tag prepared by dipping cellulose fibers into Cit-HNTs-Myr, which extended the shelf life of shrimp and blueberries, and provided freshness information for the shrimp. These results demonstrate the applicability of Cit-HNTs-Myr in the preservation of perishable goods and freshness monitoring.
研究领域:
食品科学
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材料科学
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生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Haohong Yu,Ming Huang,Minshi Huang,Mingxian Liu
Development of effective anti-icing/deicing strategy is of technical importance, as the natural phenomenon of icing has raised many problems for human social production as well as industrial activities. In this study, a superhydrophobic and colored surface (AC/POS@HNTs) with excellent photothermal deicing properties was designed by combining silane-modified halloysite nanotubes (POS@HNTs) and emerald-green acrylic dye (AC) as photothermal materials. Compared with traditional black photothermal materials, AC/POS@HNTs achieve better photothermal conversion efficiency. The modified HNTs powder was coated on different substrates by double-sided tape, which displays remarkable hydrophobic properties with a water contact angle of up to 154° and a rolling angle of 4°. Moreover, the superhydrophobic HNTs coated surface exhibits excellent photothermal characteristics, attaining an equilibrium temperature of 106.3 °C within 20 s under an intensity of 1 W/cm2 of 808 nm laser light. Additionally, the temperature of the green hydrophobic surface can reach 55 °C under one solar intensity. This results in a significant increase in the deicing rate (16.91%/min) compared to the control group (14.14%/min) and extends the anti-icing time from 71 to 245 s. This work presents a nonblack photothermal composite using hydrophobic modified HNTs and emerald-green acrylic dye, offering promising applications in aviation, roadways, and infrastructure as anti-icing/deicing materials.
研究领域:
材料科学
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纳米技术
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表面工程
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能量转换
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防除冰技术
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2017
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IF 3.387
Zhan Shu,Yi Zhang,Jing Ouyang,Huaming Yang
A novel antibacterial nanocomposite, CeO 2 -ZnO/HNTs was prepared by a homogeneous co-precipitation method in ethanol solution. ZnO and CeO 2 nanoparticles with sizes of approximately 8 and 4 nm, respectively, were dispersively precipitated onto the surface of halloysite nanotubes (HNTs). HNTs served as a template for reducing the agglomeration of ZnO nanoparticles and improving the interface reactions between the nanocomposite and bacteria cells. CeO 2 nanoparticles were introduced to suppress the recombination of electron-hole pairs, and narrow the energy gap of ZnO nanoparticles. The synergistic effects of ZnO, CeO 2 nanoparticles and HNTs led to the superior antibacterial activity of the CeO 2 -ZnO/HNTs nanocomposite against gram-negative Escherichia coli.
研究领域:
材料科学
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微生物学
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DOI
高影响因子
ACS Applied Nano Materials
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2021
·
IF 5.097
Qiang Zhao,Hanxi Jiang,Boyan Tang,Yonggang Wu,Xinwu Ba,Hailei Zhang
Preparation of a smart tool for simultaneous detection and removal of hypochlorite (ClO–) in water, a kind of serious persistent pollutant in industrial wastewater and even in tap water, is a puzzling issue in the chemosensing field. Here, halloysite nanotubes (HNTs), a natural product with excellent dispersibility in water, were employed as the scaffold to solve the urgent problem. The diaminomaleonitrile moiety, accompanying with the coumarin derivative as a chemosensor unit, was decorated on the surface of the HNTs. The diaminomaleonitrile group can be transferred into substituted imidazole formation and thereby triggers strong fluorescence emission upon ClO–, which triggers a dramatically “turn-on” fluorescence change and reduce ClO– into eco-friendly chloridion (Cl–). The detection and removal capacities show high selectivity over other commonly used ions. These results suggest that the smart nanocomposite can be used in the synchronous detection and removal of ClO– in water, which may pave a path in water quality monitoring and treatment.
研究领域:
化学传感
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环境科学
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材料科学
✓ 已验证
DOI
高影响因子
Desalination and Water Treatment
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2024
·
IF 1
Mengmeng Zhang,Liangliang Chang,Zehao Yu
Halloysite nanotubes/polypyrrole (HNTs/PPy) nanocomposites were fabricated by in situ polymerization of pyrrole monomer in the presence of HNTs. The structures of the composites were analyzed by X-ray diffraction, Fourier transform infrared spectra, thermogravimetric analysis and transmission electron spectroscopy. Subsequently, the capability of HNTs/PPy nanocomposites on the removal of methyl orange from aqueous solution was systematically studied. The HNTs/PPy nanocomposites showed high adsorption capacity toward methyl orange and a maximum adsorption capacity of 214.6 mg/g at 25°C was achieved. The adsorption kinetics demonstrated a rapid methyl orange uptake by HNTs/PPy and the experimental data were well fitted to the pseudo-second-order model. The Langmuir and Freundlich models were employed to describe the adsorption isotherms, and the results presented that the equilibrium data obeyed both the Langmuir and Freundlich models. Thermodynamic parameters of Δ G ° and Δ H ° verified the spontaneous and exothermic nature of the methyl orange adsorption onto HNTs/PPy. Furthermore, the regeneration experiments revealed that HNTs/PPy nanocomposites could be reused after treated with hydrochloric acid solution, showing potential applications in purification of dyeing effluents.
研究领域:
环境科学
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材料科学
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纳米技术
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吸附
✓ 已验证
DOI
高影响因子
APPLIED CLAY SCIENCE
·
2020
·
IF 4.605
Chao Wang,Zuyu He,Yunhao Liu,Chuang Zhou,Jing Jiao,Puwang Li,Dequan Sun,Liyun Lin,Ziming Yang
Halloysite nanotubes (Hal) are naturally occurring tubular clay nanomaterials that have a unique tubular structure and surface modifiability. In order to increase the stability and to achieve controlled release of fertilizers, chitosan (CS) was assembled on the surface of Hal as a valve for preparing Hal@CS and to control the mesoporous surface and lumen ports. Transmission electron microscopy (TEM), X-ray diffraction, Fourier transform infrared, thermogravimetric analysis and nitrogen adsorption isotherm analysis were conducted to confirm the successful grafting of CS onto the surface of the Hal. The cumulative release ratio of urea from the Hal@CS in vitro after 96 h was 34.37% without glutathione (GSH). After introducing GSH the rate of release of urea from the Hal@CS increased. The uptake, translocation, and distribution of the Hal@CS in the epidermal layer and endodermis of root tissue were detected by fluorescence labeling and TEM. We conclude that Hal@CS are a potential controlled-release carrier and delivery system for agricultural fertilizers.
研究领域:
农业科学
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纳米技术
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材料科学
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产品关联
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
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CLAY SCIENCE
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2020
·
IF 4.605
Xiaoyun Mo,Fuling Wu,Binglong Yu,Wenlong Wang,Xiulan Cai
Halloysite nanotubes have been gradually applied in the field of biomedicine, due to their attractive properties including biocompatibility, nontoxicity, hydrophilic and low-cost. Here, polyglycerol (PG) is used to wrap the surface of Hal to yield Hal-PG, so that there are a large number of hydroxyl groups on the surface of Hal-PG. Then, Hal-PG-FA nanocomplexes were prepared by combining folate (FA) with Hal-PG via esterification reaction. Thereafter, doxorubicin (DOX) was loaded on novel targeted anticancer delivery system Hal-PG-FA that can bind specifically to tumor cells that overexpressed the folate receptor. The obtained nanomaterials were fully characterized using FT-IR, TEM , XPS , TGA and DLS techniques. Moreover, the anticancer activity of Hal-PG-FA/DOX was detected by Cell Counting Kit-8 (CCK8) and flow cytometry (FCM). In vitro cytotoxicity assay preliminarily proved that the Hal-PG-FA/DOX had a more significant inhibitory effect than the free DOX. The results of flow cytometry showed that apoptosis rate on HeLa cells was enhanced by Hal-PG-FA/DOX. All these results showed that folate-PG modified halloysite is an excellent nano anticancer drug carrier in cancer therapy.
研究领域:
生物医学工程
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纳米技术
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药学
·
肿瘤学
✓ 已验证
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2019
·
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
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
Minerals
·
2018
·Vol. 8
·期 7
·296
·
IF 1.835
Jing Ouyang,Dawei Mu,Yi Zhang,Huaming Yang,Steven L. Suib
Barium carbonate (BaCO3) materials with the controllable morphology of nanoparticles were selectively loaded into the lumen halloysite nanotubes (abbreviated as Hal) by a urease assisted catalytic implementation strategy. The Hal mineral was pre-treated through leaching by hydrochloric acid (abbreviated as A-Hal), resulting in increased defect sites and zeta potential. The negatively charged urease was loaded inside the positively charged A-Hal lumen, and then through the decomposition of urea catalyzed by urease to produce carbonate ions and ammonia. When Ba2+diffused in, BaCO3particles were selectively synthesized in the lumen of A-Hal, the pore channels of A-Hal effectively controlled the growth and aggregation of BaCO3nanocrystals and their geometrical morphology. The obtained BaCO3/A-Hal-T was characterized by transmission electron microscopy, Fourier transformation infrared spectroscopy and X-ray diffraction, differential scanning calorimetry-thermogravimetry (DSC-TG). The BaCO3/A-Hal-T may provide a candidate for potential applications.Keywords:halloysite;urease;barium carbonate;selective decoration;nanoreactors
研究领域:
材料科学
·
生物催化
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产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 81
·66147-66154
·
IF 3.84
Xiaohong Zhu,Hui Li,Hui Zhou,Shian Zhong
A novel protein imprinted polymer, which combined the surface imprinting technology and magnetic halloysite nanotubes (MHNTs), was prepared for selective separation of a template protein. In this work, MHNTs were synthesized through the coprecipitation method based on encapsulation of Fe3O4 nanoparticles in halloysite nanotubes. The surface of the MHNTs was modified with vinyl groups through reaction with 3-(methacryloyloxy)propyl trimethoxysilane. Subsequently, the modified MHNTs were used as a support, N-isopropylacrylamide and methacrylic acid as bifunctional monomers, N,N′-methylene bisacrylamide as the crosslinking agent, and ammonium persulphate and N,N,N′,N′-tetramethylethylenediamine as initiators. The resulting polymer was named MHNTs@BSA-MIP, which was characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and vibrating sample magnetometry. The MHNTs@BSA-MIP exhibited high adsorption (48.4 mg g−1), good selectivity, rapid kinetic binding (45 min), fast magnetic separation (10 s), and favorable reproducibility (relative standard deviation <8% for batch-to-batch evaluation). The prepared MHNTs@BSA-MIP is suitable for separation and provides a significant reference for other proteins in proteomics.
研究领域:
材料科学
·
生物化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）