JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 7
·4528-4540
·
IF 4.682
Chen Mingyan,Zhang Yao,Chen Jie,Liu Yucheng,Li Lingli,Du Guoyong
The porous material MOF-199 with a large specific surface area is widely used in the field of adsorption, but the single MOF material is not stable enough and the adsorption performance needs to be improved, so MOFs materials are often modified by combining with other materials. The composite material Fe 3 O 4 -ATP/MOF-199 (FAM) was prepared by solvothermal method combined with MOF-199, attapulgite (ATP) and Fe 3 O 4 . It was used in the static adsorption experiment of model oil to study the desulfurization performance, including the influence of external conditions such as adsorption time, temperature and the mass ratio of model oil to adsorbent on adsorption capacity. The structure and morphology of the adsorbent were characterized by XRD, FT-IR, SEM, VSM and BET. The experimental results show that the doping of attapulgite reduces the particle size of magnetic MOF-199 and makes the adsorbate closer to the active center of the adsorbent so as to improve the adsorption efficiency.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Juan Liu,Jingping Zhong,Zhiwen Chen,Jinshui Mao,Jun Liu,Zhenyu Zhang,Xiaocheng Li,Sili Ren
Attapulgite (AT) nanorods are generally regarded as one-dimensional materials and have been widely used in many fields. Two-dimensional (2D) AT nanomaterials have remained quite rare due to the difficulty of assembling from one-dimensional nanorods. Herein, we have prepared a novel type of single-layered 2D palmate AT nanosheets (AT-NS) with uniform size by a solvothermal synthesis process. The morphology and structure of the obtained 2D nanosheets were characterized by SEM, TEM, AFM, XRD, FTIR, and XPS. It was found that the AT nanosheets have a mean thickness in the range of 30–50 nm, and the length and width are in the range of 30 nm-2 μm. The structure evolution from AT nanorods to nanosheets were systematically studied and revealed. It was shown that the amination of AT and the introduction of trivalent iron ions (Fe 3+ ) ions into the AT materials play key roles in the formation of AT-NS. The AT nanorods are connected each other by the AT-NH 2 groups coupling with the Fe 3+ ions on the AT surface. More importantly, the Fe 3+ substitute the Al 3+ , Mg 2+ in AT mainly along the (1 1 0) planes. Therefore, the coordination of trivalent iron ions with amino groups occurs on the AT (1 1 0) plane. As a result, multiple nanorods are connected side by side to form the 2D nanosheets in a palmate shape. It is believed that the special morphology and structure of the 2D AT-NS material may bring some outstanding performance, which makes it have potential important application such as the demulsification of crude oil-in-water emulsion. In addition, the confined 2D assembling methodology offers us a new way to design and prepare novel materials with 2D structure.
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
Smart Materials and Structures
·
2014
·Vol. 23
·期 7
·075005
·
IF 2.449
Ting Jin,Yuchuan Cheng,Ru He,Yuxia Luo,Meng Jiang,Chao Chen,Gaojie Xu
Attapulgite (ATP) is a type of crystalloid hydrous magnesium-aluminum silicate mineral with natural one-dimensional (1D) fibrous morphology. In this study, the authors investigated the optical and mechanical performances of ATP nanorods in silicone oil under an electric field. It was observed that the optical transmittance of ATP suspensions decreased rapidly under the low electric field, using ultraviolet-visible (UV-Vis) spectroscopy. The results of optical microscopy and scanning electron microscopy (SEM) indicated that the electromigration of ATP nanorods was the major cause of such an aberrant optical phenomenon. Further, the electrorheological (ER) response of the samples was measured by the height-controlled method. The change trend of the normal force was illustrated by the dynamic assembly behavior of ATP in the applied electric field. This work provided intuitive evidence for an in-depth understanding of the mechanism of ER fluids containing 1D dielectric materials.
研究领域:
材料科学
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物理学
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DOI
高影响因子
DESALINATION
·
2014
·
IF 3.96
Yalei Zhang,Jing Zhao,Huaqiang Chu,Xuefei Zhou,Yong Wei
Attapulgite (APT), which is a highly hydrophilic fibrillar mineral in nature, is a promising new additive for preparation of ultrafiltration (UF) membranes. In this work, APT particles were first grafted with NH 2 using the silane coupling agent APTES to detach the crystal bundles to single crystal and enhance the uniform dispersion in an organic polymer matrix ; these components were subsequently incorporated into a polyvinylidene fluoride (PVDF) matrix to develop a hybrid membrane via a phase inversion method. The modified APT mineral was characterized using SEM and FTIR to confirm the presence of the amine group on the surface. Other techniques (i.e., FTIR-ATR, XRD and TGA) and parameters (i.e., porosity, the average pore size , contact angle and filtration measurements of water and bovine serum albumin (BSA)) were applied and measured to study the performance of the UF membranes. Compared with the pure PVDF sample, the APT particle blended membranes exhibited better thermal stability, smaller pore size and higher hydrophilicity. More importantly, the values for pure flux, flux recovery ratio (FRR) and rejection of BSA solution all indicated that the PVDF/APT hybrid membranes offer excellent hydrophilicity, water permeability and good antifouling performance.
研究领域:
材料科学
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高分子化学
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膜技术
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环境工程
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分离科学
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纳米复合材料
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表面改性
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DOI
高影响因子
COLLOID AND POLYMER SCIENCE
·
2024
·Vol. 302
·期 5
·819-828
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IF 2.2
Ji Xinyuan,Yang Zhe,Fang Jiahui,Hu Sheng
In this study, a novel molecularly imprinted polymer (MIP) was synthesized with attapulgite (ATP) and acrylamide (AM) and ethyl methacrylate (MMA) for controlled release carrier of 5-fluorouracil (5-FU). The MIPs (PAM-PMMA) were characterized by XRD, FESEM, HRTEM, and FTIR. The drug loading and in vitro controlled release ability of MIP on 5-FU was investigated by adsorption property analysis and in vitro release analysis. MIPs (PAM-PMMA) reached a maximum drug loading of 12 mg/g and a maximum release of 80% at an ATP dosage of 0.2 g (0.4%), an initial concentration of 5-FU of 100 mg/L, and an adsorption time of 240 min. Cytotoxicity analysis showed that the maximum inhibition of cells could reach 25% at 72 h of cell culture time under the above conditions. The results showed that MIPs synthesized with ATP as the substrate and AM and MMA as the functional monomers were successfully synthesized and could be used as a drug delivery system for 5-FU. Graphical
研究领域:
材料科学
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高分子科学
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药剂学
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纳米技术
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DOI
高影响因子
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
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2016
·Vol. 22
·期 3
·309-314
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IF 1.87
Chen Le,Wang Yue-Wei,He Ming-Yang,Chen Qun,Zhang Zhi-Hui
5A zeolites were facilely synthesized from attapulgite clay and sodium aluminate precursors. The optimum synthesis condition for 4A zeolite (Na-form) were H 2 O/attapulgite ratio of 40:1 volume/mass, NaOH/attapulgite mass ratio of 2.35:1, the crystallization time was 4 h at 80–85 °C. The 4A zeolite was converted to related 5A zeolite (Ca-form) through ionic exchanges using calcium chloride solution with the Si/Al mole ratio of 1.3. SEM images demonstrated that as-synthesized 5A zeolites are ordered cubic crystals, average crystals length dimension is 1–2 μm. And the zeolites product had a specific surface area of 482 m 2 g −1 and total pore volume of 0.274 cm 3 g −1 . The static adsorption experiments showed that the equilibrium adsorption capacities of n -decane and n -pentadecane on produced 5A zeolite were 0.253 and 0.510 g g −1 , respectively. And the adsorption equilibrium time of n -decane and n -pentadecane on 5A zeolite were 45 and 60 min, respectively. The experimental adsorption data of n -decane and n -pentadecane on three zeolites could be properly fitted by the Langmuir–Freundlich isotherm model.
研究领域:
材料科学
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化学工程
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吸附技术
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无机合成
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DOI
高影响因子
Results in Engineering
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2026
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IF 9.4
Zengfu Wang,Huiqin Fu,Shuping Jin,Zhen Li,Xingjie Li
A complex coacervation process using water-in-oil-in-water (W/O/W) double emulsions stabilized by polyvinyl alcohol (PVA) and attapulgite (ATP) is developed to fabricate microcapsules co-encapsulating water, fertilizers (urea and diammonium phosphate, DAP), and pesticide (diquat dibromide, DQDB), termed WFP microcapsules. The encapsulation efficiencies reach ∼73% (urea), ∼82% (DAP), and ∼58% (diquat dibromide). In sand release tests, the WFP microcapsules exhibit excellent slow-release performance: on day 1, only ∼6.9% of nitrogen, ∼8.6% of phosphorus, and ∼10.3% of diquat dibromide are released. In contrast, untreated reagents release >68% of nitrogen, >94% of phosphorus, and 30% of diquat dibromide over the same period. These results demonstrate that PVA/ATP microcapsules offer a promising integrated platform for water-fertilizer-pesticide delivery with significantly enhanced utilization efficiency.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2026
·
IF 3.1
Zhilong Zhu,Hongxiang Ou,Honglai Xue,Fang Zhu
To enhance the oil–water separation performance and stability of melamine sponge (MS), stearic acid-grafted attapulgite (SA-g-OATP) was synthesized via silanization and amidation grafting. The hydrophobic sponge (MS-POS) was fabricated by dip-coating MS in a polydimethylsiloxane (PDMS) solution containing SA-g-OATP. Characterization confirmed a grafting rate of 20.73%. The synergy between SA-g-OATP and PDMS constructed a hierarchical “micron skeleton-nanoparticle” rough structure. The optimal sample, MS-POS1-1, exhibited superhydrophobicity with a water contact angle of 159.34° and achieved high adsorption capacities for oils and solvents, reaching 112.33 g/g for palm oil. In gravity-driven tests, it showed separation efficiencies above 98.34% for oil–water mixtures and effectively separated water-in-oil emulsions. The sponge demonstrated robust stability, retaining hydrophobicity after 40 cycles of tape-peeling or sandpaper abrasion, and withstanding prolonged immersion in pH 2–12 solutions. The adsorption capacity remained above 89.70% after 20 consecutive adsorption-extrusion cycles. Developed from low-cost materials via a simple process, MS-POS exhibits high adsorption capacity, excellent selectivity, and robust stability, showing significant potential for oily wastewater remediation.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Jiexiang Liu,Ping Wang,Xiaoguang Zhang
Firstly, the surfactant cetyltrimethylammonium bromide (CTAB) and 1-hexadecyl-3-methylimidazolium chloride monohydrate (HMCM) were intercalated into attapulgite (AP) to obtain CTAB-AP and HMCM-AP complexes, respectively, and then pesticide dinotefuran (DIN) was introduced into the complexes to prepare DIN/CTAB-AP (HMCM-AP) hybrids, finally the hybrids was added into N-isopropylacrylamide (NIPAM) solution to obtain DIN/CTAB-AP(HMCM-AP)/PNIPAM hydrogels through the free radical polymerization. Their structures were systematically characterized by XRD, FTIR, TGA , SEM and BET. The effect of hybrids content, crosslinker concentration and pH on the hydrogel was investigated and analyzed. The existence of DIN and surfactant molecules in the hydrogels was confirmed. Fabrication mechanism of DIN hydrogels was put forward. Release behaviors of the hydrogels were investigated in different release mediums and temperatures. For DIN/CTAB-AP/PNIPAM, DIN release amount increased from 79.5 % at 20°C to 97.7 % at 30°C. For DIN/CTAB-AP/PNIPAM and DIN/HMCM-AP/PNIPAM ( p = 4, 9.3) hydrogels, the release rates are much slower in pH= 5.0 than pH= 9.0. The release behaviors were well fitted by pseudo second-order and Ritger-Peppas models. Bioassays revealed extended efficacy against aphids (73 % mortality on third day for the third inoculation), suggesting a long duration and control effect of the hydrogels on the pest compared to the DIN water dispersible granules. This study provided a new method to improve the utilization efficiency of pesticide, and the hydrogel can be potentially used as a pesticide delivery system.
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高影响因子
FOOD CONTROL
·
2025
·
IF 6.3
Fen Tang,Fei Ma,Du Wang,Mengxue Fang,Liangxiao Zhang,Peiwu Li,Li Yu
Aflatoxin B 1 (AFB 1 ) in peanut meal poses a significant risk to human and animal health, as well as to food safety and the feed industry. However, none of the detoxification technologies demonstrate significant potential for industrial applications in terms of efficacy, cost-effectiveness, and safety for detoxifying AFB 1 in peanut meals. To address this challenge, this study proposes a novel detoxifier by integrating attapulgite (ATP), a low-cost AFB 1 adsorbent, with laccase, an effective enzyme for AFB 1 degradation. By optimization of the synthesis conditions, including the initial laccase activity and volume, reaction temperature and time, as well as the pH of the buffer system, the modified ATP-supported laccase (MATP-La) with the highest loading capacity and enzymatic activity has been successfully developed. Stability experiments revealed that the immobilized laccase considerably improved the enzymatic stability compared to free laccase. The detoxification performance of MATP-La was evaluated across a broad range of AFB 1 concentrations. Results showed that the synergistic effect between MATP adsorption and laccase-facilitated degradation enabled MATP-La to achieve excellent detoxification efficiency. Specifically, adding only 0.1% of MATP-La to contaminated peanut meal resulted in over 90% AFB 1 detoxification within 24 h. Additionally, cytotoxicity experiments demonstrated the safety of MATP-La. In summary, this study not only offers a novel and practical approach for detoxifying AFB 1 from feeds but also effectively enhances the application potential of these materials.
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高影响因子
Water
·
2024
·Vol. 16
·期 22
·3233
·
IF 3
Chun-Yan Lin,Wenliang Wu,Wenya Shao
Phosphorus removal is critical for effective water treatment and the prevention of eutrophication. This study focuses on the modification of attapulgite, an economical clay material, with zirconium (Zr@ATP) to enhance its phosphorus adsorption capacity. Zr@ATP was comprehensively characterized, and its phosphorus-removal mechanisms were investigated. Additionally, its performance in water treatment was evaluated using a lake water-sediment system. Zr@ATP exhibited a high surface area of 329.29 m2/g. The static adsorption experiments revealed that Zr@ATP achieved a phosphorus-removal efficiency of 95.8% at an adsorbent dosage of 5 g/L. Kinetic studies indicated that the adsorption followed a pseudo-second-order model, with the primary mechanism being chemisorption via ion exchange. Application of Zr@ATP in a lake water-sediment system resulted in an 83.6% reduction in total phosphorus. The chlorophyll concentration significantly decreased from 32.33 μg/L to 8.56 μg/L, and the algal density decreased by 84.6%, effectively inhibiting algal growth. These results suggest that Zr@ATP is a promising adsorbent for sustainable phosphorus removal and eutrophication control in aquatic environments.
研究领域:
环境科学
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水处理技术
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DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2024
·
IF 2.8
Bo Yu,Xiaoning Li,Jiao Ma,Han Yan,Ke Lian,Pengfei Shen
BACKGROUND Arsenic contamination can exert severe detrimental effects on the ecological environment and human health. It can cause acute or chronic poisoning, resulting in cell distortion or cancer when humans come into contact with or consume arsenic-containing water. Adsorption technology is one of the effective methods for arsenic removal. In this study, using attapulgite (ATP) as a support for bimetallic iron–manganese oxides, a series of adsorbents (Fe-Mn/ATP) with different manganese-to-iron molar ratios were prepared via the coprecipitation method. Scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy mapping, X-ray diffraction and zeta potential measurements were used to analyze the structure and properties of Fe-Mn/ATP. In addition, the adsorption performance of the material for arsenic ions was investigated by static adsorption and dynamic adsorption experiments. RESULTS A novel Fe-Mn/ATP adsorbent was prepared using ATP as the raw material and manganese-to-iron molar ratio was 1:3 by coprecipitation at 60 °C for 1 h. The adsorption efficiency of arsenic ions was optimal at an Fe-Mn/ATP dosage of 2 g L −1 , pH 4 and a contact time of 10 min, reaching a maximum adsorption capacity of 38.27 mg g −1 at room temperature. The adsorption process followed the pseudo-second-order kinetic model and the Langmuir isotherm adsorption model, indicating that arsenic ion adsorption by Fe-Mn/ATP was mainly monolayer chemical adsorption. Furthermore, Fe-Mn/ATP showed a removal rate for arsenic ions of over 80% after four cycles of regeneration, revealing a great potential for practical application. CONCLUSION This study offers a promising Fe-Mn/ATP adsorbent for removal of arsenic ions from wastewater. © 2024 Society of Chemical Industry (SCI).
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）