APPLIED CLAY SCIENCE
·
2023
·
IF 5.6
Guangxin Zhang,Shilin Li,Yifei Li,Xiongbo Dong
The 2D/1D structure of ZnIn 2 S 4 /attapulgite was constructed by anchoring ZnIn 2 S 4 nanosheets on the surface of attapulgite nanorods for the removal of tetracycline hydrochloride (TC) and rhodamine B (RhB). The 2D ZnIn 2 S 4 was closely combined with the 1D attapulgite, and ZnIn 2 S 4 /attapulgite had a higher BET surface area (83.6 m 2 /g) than pure ZnIn 2 S 4 (13.6 m 2 /g). The combination of ZnIn 2 S 4 and attapulgite promoted pollutant adsorption by providing more exposed active sites and a larger contact area, which also contributed to enhanced photocatalytic performance. Under visible light irradiation, the as-prepared ZnIn 2 S 4 /attapulgite composites exhibited enhanced photocatalytic activity when compared with pure ZnIn 2 S 4 . After 9 min (50 min) of irradiation, the optimized ZnIn 2 S 4 /attapulgite photocatalyst removed about 99.9% RhB (82.1% TC). In addition, the ZnIn 2 S 4 /attapulgite photocatalyst demonstrated excellent photostability and availability. Compared with other photocatalysts, the samples in this work used natural minerals as the carrier, which significantly improved the dispersibility and adsorption performance of the catalyst, and was conducive to the improvement of catalytic performance. This work contributed to the development of photocatalysis for the removal of environmental liquid-phase pollutants.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 13
·6998-7005
·
IF 7.443
Lei Lu,Xing-Yang Li,Xiao-Qin Liu,Zhi-Min Wang,Lin-Bing Sun
Metal–organic frameworks (MOFs) have attracted extensive attention due to their large surface area, diverse structures, and tuneable functionality. However, the poor hydrostability of most reported MOFs hinders their practical applications severely. In this paper, we report a strategy to modulate the properties of a typical MOF, namely MOF-5 [Zn4O(BDC)3; BDC = 1,4-benzenedicarboxylate] by hybridizing it with a natural clay (i.e. attapulgite), for the first time. A new kind of hybrid material resulting from the hybridization of the MOF and attapulgite was thus constructed. Our results showed that the hydrostability of the MOF was apparently improved due to the hybridization with attapulgite. The frameworks of MOF-5 were degraded seriously under the humid atmosphere, while the structure of the hybrid materials could be well preserved. We also demonstrated that the hybrid materials were highly active in the heterogeneous Friedel–Crafts alkylation reaction of benzyl bromide with toluene. The conversion of benzyl bromide reached ∼100% under the reaction conditions investigated. More importantly, the catalytic stability of the hybrid materials was significantly enhanced owing to the introduction of attapulgite. The activity could be well recovered with no detectable loss, and the conversion remained at ∼100% at the sixth run, which was apparently higher than that of MOF-5 (27.7% at the sixth run). The excellent hydrostability, catalytic activity, and reusability make the present materials highly promising for utilization as heterogeneous catalysts in practical applications.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2024
·
IF 6.5
Yunyirui Liu,Changhua Li,Rongkai Wu,Jixin Gong,Bihe Yuan
Enhancing flame retardancy and fire-warning capabilities of thermal insulation materials used in building external walls is crucial for ensuring fire safety as well as guarding people's lives and assets. Herein, we have developed an environmentally friendly nano-coating that possesses flame-retardant and early-warning properties by integrating graphene oxide (GO) and attapulgite (ATP) onto melamine foam (MF) through a layer-by-layer self-assembly method (LBL). The GO-ATP-MF composite demonstrates a rapid response to flame (<1 s) due to GO's thermally induced reduction. Additionally, ATP's synergistic flame-retardant effects on both gas and condensed phases contribute to outstanding flame retardancy, enabling an enduring fire alarm duration (>1330 s). The warning duration time of this composite surpasses the majority of GO-based fire-warning nano-coatings reported to date. Moreover, incorporating a Bluetooth wireless transmission system facilitates real-time fire information sharing among smart devices, thereby optimizing fire signal transmission efficiency. Thus, this study advances GO-based flame-retardant nano-coatings and devices with high sensitivity and prolonged fire-warning capabilities, providing an innovative idea to enhance the fire safety of MF as a thermal insulation material.
研究领域:
材料科学
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消防安全
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纳米技术
✓ 已验证
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 30
·16947-16956
·
IF 2.936
Feng Nan,Kaihe Zhou,Shuan Liu,Jibin Pu,Yunhui Fang,Wenxuan Ding
Attapulgite is a layered silicate with good friction-reduction and self-repairing properties. In order to further improve its tribological properties, the present work mainly focuses on the preparation of attapulgite/La2O3 nanocomposite and study on its tribological behaviors. The tribological properties of mineral lubricating oil (150SN) containing attapulgite/La2O3 nanocomposite were investigated through an Optimal SRV-IV oscillating friction and wear tester. The rubbing surfaces and generated tribofilms were characterized by SEM, EDS, XPS and nanoindentation. Results indicated that the friction-reducing ability and antiwear property of the oil were both remarkably improved by attapulgite/La2O3 nanocomposite. A tribofilm mainly composed of Fe, Fe3C, FeO, Fe2O3, FeOOH, SiO, SiO2 and organic compound was formed on the rubbing surface under the lubrication of oil with attapulgite/La2O3 nanocomposite. The tribofilm possess excellent self-lubricating ability and mechanical properties, which is responsible for the reduction of friction and wear.
研究领域:
材料科学
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摩擦学
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Yinghao Wu,Jinming Wei,Xiaolu Shi,Wenjie Zhao
In the marine environment, the protective coatings face serious corrosion and biofouling problem, limitations, and challenges that made self-healing coatings unable to perform both anti-corrosion and anti-biofouling dual-function at the same time. Here we constructed the corrosion resistance and anti-biofouling self-healing coating by integrating nano-containers into the coating matrix, the 2-Undecylimidazoline (ULM) acted as a corrosion inhibitor and anti-biofouling dual-functional agent which was loaded on the natural container attapulgite (ATP). To obtain high healing efficiency, a fluidity-driven self-healing silicone oil coating was thickened by fibrous ATP to enhance its stability, which played a key role in the self-healing and long-term corrosion resistance. The self-healing time of ULM@ATP reinforced oil coating was 4 s at least in the air and up to 30 s in the 1 M HCl solution. Meanwhile, the ULM@ATP can significantly enhance the corrosion resistance of the self-healing coating, with the best effect achieved when the content of ULM@ATP was 5 wt.%. The impedance modulus of ULM@ATP-2 still reached 1.62 × 10 8 Ω cm 2 after 480 immersion in 3.5 wt.% NaCl solution, which is 3 orders of magnitude high than pure Oil coating (2.17 × 10 5 Ω cm 2 ). The restructure of the ATP network and the release of ULM could largely inhibit the corrosion of metal. The continuous open circuit potential of the composite coating performed the potentially infinite self-healing capacity. The self-healing performances of the composite coating in strong acid and base solutions exhibited high environmental suitability. This anti-corrosion and anti-biofouling (the surface coverage of adhered chlorella decreased 96.88%) dual-function strategy of self-healing coatings could be also realized by many other porous nano-materials or function modifications. The self-healing performances of the composite coating in strong acid and base solutions exhibited high environmental suitability. This anti-corrosion and anti-biofouling dual-function strategy of self-healing coatings could be also realized by many other porous nano-materials or function modifications. The rapid response self-healing coating possessed anti-biofouling and active self-healing functions and showed wide application under more service environments.
研究领域:
材料科学
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海洋工程
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防腐蚀技术
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Haosen Xiong,Renyang Yang,Xiaohong Fu,Wensheng liao,Jiagen Li,Shuyong Shang,Songqing Liu,Qiang Zhang
Aflatoxin B1 (AFB1) is one of the most harmful mycotoxins to human and environmental health. In this paper, a novel electrochemical AFB1 immunosensor using attapulgite composite N-phenylglycine as a conductive material is developed. The strong π–π and electrostatic interactions between the AFB1 antibody and the nanomaterial are investigated. The developed electrochemical AFB1 immunosensor exhibits high sensitivity, with a detection limit of 0.011 ng mL−1 and a quantitation limit of 0.035 ng mL−1 (S/N = 3). The recoveries for three different concentrations of AFB1 range from 97.5% to 104.6%, with a relative standard deviation of stability less than 2.0%. ATP-PNPG possesses more oxygen defects and adsorbed oxygen than ATP-NPG. These properties enhance its electronegativity and make it more conducive to detecting low concentrations of AFB1 through electrochemical sensing technology. Finally, the electrochemical AFB1 immunosensor demonstrates good selectivity, stability, and reusability for detecting AFB1 in corn samples, exhibiting a high recovery rate.
研究领域:
食品科学
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环境健康
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2012
·
IF 4.531
Chuande Zhao,Xingmei Guan,Xiaoyan Liu,Haixia Zhang
A molecularly imprinted polymer was synthesized by ultrasonic irradiation, with attapulgite as matrix using β-naphthol as the template molecule, acryloyl-β-cyclodextrin as the functional monomer, and N,N-methylenebiacrylamide as the cross-linking agent, respectively. The imprinted polymer was characterized by infrared spectroscopy and transmission electron microscopy. Compared to polymers prepared by traditional heat sources, the molecularly imprinted polymer synthesized by ultrasonic irradiation had better selectivity and faster adsorption kinetics to estriol, estradiol, estrone and diethylstilbestrol. Using the imprinted polymer as the packing material for on-line solid-phase extraction, the above four estrogens in milk samples were concentrated and analyzed. The limits of detection for these estrogens were in the range of 1–8 ng g −1 and reproducibility were less than 5.1% as RSDs ( n = 6) with milk samples spiked at 100 and 1000 ng g −1 of each analyte.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Zhaoru Fan,Shouyong Zhou,Hengyang Mao,Meisheng Li,Ailian Xue,Yijiang Zhao,Weihong Xing
Anthurium andraeanum-like Fe 3 O 4 -attapulgite (FATP) fibers were prepared by anchoring nano-Fe 3 O 4 particles on the surface of attapugite (ATP) via chemical coprecipitation . Then a novel ceramic microfiltration membrane with superhydrophilic and underwater superoleophobic performance was fabricated based on the FATP fibers. Ascribed to the hydrophilic performance of Fe 3 O 4 and micro-nano structure of FATP fibers, the underwater oil contact angles of the FATP membrance for various types of oils are larger than 158° and the membrane also possesses rather low adhesion force with oil droplets. After 3 cycles of oil-in-water (O/W) emulsion separation, the steady flux of FATP membrane is 209 L m −2 h −1 , 44% higher than that of ATP membrane. Moreover, the FATP membrane is stable and easy to clean, its oil rejection maintains at 98.7% and flux can recover by 86.5% using hot water as cleaning agent. The as-developed anthurium andraeanum-like structure in membrane surface provides promising guidance to improve the O/W purification performance of membrane.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2020
·
IF 3.594
Mingxin Niu,Zuopeng Li,Sanbing Zhang,Wenjuan He,Jing Li,Runhua Lu,Haixiang Gao,Aijun Zeng,Wenfeng Zhou
A magnetic Metal-Organic Frameworks composite material modified with attapulgite was prepared via in situ growth method and characterized by Fourier transform infrared, X-ray diffraction, scanning electron microscopy, N 2 adsorption-desorption and vibration sample magnetometer analysis. It was applied as an efficient adsorbent for the magnetic solid-phase extraction of seven benzoylurea insecticides from environmental water samples couple with high-performance liquid chromatography detection. Under the optimized experimental conditions, the established procedure exhibited low limit of detection ranging from 0.75 to 1.5 µg L −1 and good linear response ranging from 2.5 to 500 µg L −1 with coefficients of determination >0.99. The method recoveries of spiked analytes at the concentrations of 20, 100 and 200 µg L −1 in real water samples were 73.56–99.63% with the relative standard deviations <7.53%. Moreover, the hybrid materials showed excellent reusability and there was no loss observed for the extraction efficiency within five cycles. This study highlighted the potential of functional Metal-Organic Frameworks as efficient adsorbents in sample pretreatment.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 80
·76855-76860
·
IF 3.289
Chao Yang,Haodao Mo,Limin Zang,Jian Chen,Zhenqiang Wang,Jianhui Qiu
An attapulgite@chitosan (ATP@CS) nanocomposite was prepared by coating chitosan onto naturally needle-like nanoscale attapulgite clay. The nanocomposite was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy and thermogravimetric analysis. Cellulase was covalently immobilized on this ATP@CS support using glutaraldehyde activation method and compared to (3-aminopropyl) triethoxysilane modified ATP (ATP–APTES) support. The amount of cellulase on the ATP@CS and ATP–APTES was 88.3 and 76.5 mg g−1, respectively. The reusability and effects of pH and temperature on activity were studied. The ATP@CS immobilized cellulase exhibited higher pH and thermal stability as well as good reusability compared to the ATP–APTES immobilized cellulase and the free cellulase. The immobilized cellulase samples were also utilized to hydrolyze wheat straw to evaluate their potentially practical applications.
研究领域:
生物化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2011
·
IF 2.816
Boli Ni,Mingzhu Liu,Shaoyu Lü,Lihua Xie,Yanfang Wang
To sustain the further world population, more fertilizers are required, which may become an environmental hazard, unless adequate technical and socioeconomic impacts are addressed. In the current study, slow-release formulations of nitrogen fertilizer were developed on the basis of natural attapulgite (APT) clay, ethylcellulose (EC) film, and sodium carboxymethylcellulose/hydroxyethylcellulose (CMC/HEC) hydrogel. The structural and chemical characteristics of the product were examined. The release profiles of urea, ammonium sulfate, and ammonium chloride as nitrogen fertilizer substrates were determined in soil. To further compare the release profiles of nitrogen from different fertilizer substrates, a mathematical model for nutrient release from the coated fertilizer was applied to calculate the diffusion coefficient D. The influence of the product on water-holding and water-retention capacities of soil was determined. The experimental data indicated that the product can effectively reduce nutrient loss, improve use efficiency of water, and prolong irrigation cycles in drought-prone environments.
研究领域:
农业科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymers
·
2021
·Vol. 13
·期 11
·1820
·
IF 4.329
Lu Liu,Guobing Ying,Yinlong Zhao,Yuexia Li,Yiran Wu,Dong Wen,Meng Wu,Minghui Wang,Qingzhong Zhou,Xiang Wang,Cheng Wang
As a member of two-dimensional (2D) materials, MXene is an ideal reinforcement phase for modified polymers due to its large number of polar functional groups on the surface. However, it is still relatively difficult to modify any functional groups on the surface of MXene at present, which limits its application in enhancing some polymers. Herein, one-dimensional (1D) attapulgite (ATP) nanomaterials were introduced onto the surface of MXene to form ATP–MXene hybrids, which successfully improved the mechanical properties of the epoxy composites. ATP with appropriate content can increase the surface roughness of the MXene lamellae to obtain better interface interaction. Therefore, remarkable enhancement on the mechanical property was achieved by adding M02A025 (0.2 wt % MXene and 0.25 wt % ATP), which is the optimum composition in the hybrids for composite mechanical properties. Compared to neat epoxy, the tensile strength, flexural strength and critical stress intensity factor (KIC) of M02A025/epoxy are increased by 88%, 57%, and 195%, respectively, showing a high application prospect.Keywords:MXene Ti3C2Tx;attapulgite;hybrids;epoxy-matrix composites;mechanical properties
研究领域:
材料科学
·
复合材料工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）