JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2016
·Vol. 27
·期 10
·10276-10281
·
IF 1.798
Wang Zhiqiang,Wang Botong,Xu Zebo
Optically active helical polyurea@attapulgite (HPUA@ATP) composites were prepared after the surface modification of the rod-like attapulgite (ATP). Composites were characterized by Fourier-transform infrared spectroscopy, X-ray diffraction and thermogravimetric analysis. The results indicate that the helical polyureas have been successfully grafted onto the surfaces of the modified ATP (A-ATP) without destroying the original crystalline structure of ATP. The rod-like nanoparticles were confirmed by transmission electron microscopy. The dielectric constant and infrared emissivity have been investigated, and the results indicate that the dielectric constant value of HPUA@ATP composite has been increased to 33.62 from 25.35 (the value of bare ATP), while the infrared emissivity value of HPUA@ATP composite has been reduced to 0.39 from 0.93 (the value of bare ATP), due to the interfacial interactions between organics and inorganics and the ordered stereostructures of optically active helical polymers.
研究领域:
材料科学
·
高分子化学
·
纳米复合材料
·
介电材料
·
红外技术
✓ 已验证
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2025
·
IF 6.9
Yuheng Chen,Guitao Li,Chenlei Qu,Huimin Qi,Ga Zhang
Development of innovative self-lubricating materials for applications in water medium is of significance for protecting the environment. In this study, polyurethane (PU) molecules crosslinked by attapulgite nanofibers (ATP) are formulated, and molybdenum disulfide (MoS 2 ) particles are further incorporated, aiming to improve their tribological performance under water-lubricated conditions. Compared to neat PU, the optimized composites exhibit 92.8 % and 78.7 % reductions in friction and wear, respectively, which are significantly lower than those of commercial materials. Owing to the intricate tribophysical and chemical interactions at the sliding interface, the tribo-chemical products of ATP are fed within the tribofilm, thereby promoting the development of a robust tribofilm with superior load-bearing capacity. This process effectively overcomes the insufficient lubrication load-bearing performance of the water film.
研究领域:
材料科学
·
摩擦学
·
纳米复合材料
·
高分子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Gao Bingying,Sun Yunyun,Wang Guqi,Mao Linqiang
Hazardous formaldehyde and acetaldehyde removal remains a critical challenge in volatile organic compounds (VOCs) control technologies. Adsorption-based technologies offer distinct advantages for VOCs removal in practical applications due to their operational simplicity, energy efficiency, and adaptability to complex gas matrices. Although metal–organic frameworks (MOFs) exhibit superior adsorption capacity for VOCs compared to conventional adsorbents, their widespread industrial application has been hindered by high production costs and limited stability under humid conditions. This study prepared attapulgite (ATP)-functionalized MOF composites that synergistically enhanced both VOCs adsorption capacity at static (formaldehyde: 185 mg/g; acetaldehyde: 196 mg/g at RH = 80%) and dynamic (Breakthrough time for formaldehyde and acetaldehyde: 36 min and 30 min; penetrating adsorption capacity for formaldehyde and acetaldehyde: 2.126 mg/g and 5.258 mg/g), overcoming the intrinsic moisture sensitivity and scalability challenges of pristine MOFs for industrial VOCs abatement. Kinetic analysis confirms that VOCs adsorption on the ATP-MOF composites occurs primarily through spontaneous physical adsorption mechanisms. This study demonstrates an innovative strategy of hybridizing MOFs with natural ATP minerals, offering a viable pathway to enhance the practical deployment of MOF-based adsorbents in complex real-world environments.
研究领域:
环境科学
·
材料科学
·
吸附技术
·
空气污染控制
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2018
·Vol. 316
·期 2
·635-647
·
IF 1.181
Liao Yun,Wang Meng,Chen Dajun
A novel three-dimensional porous polydopamine-functionalized attapulgite/chitosan (AT@PDA/CS) aerogel was designed and prepared for uranium(VI) adsorption, and its morphology and structure were characterized by TEM, SEM-EDS, XRD, FT-IR, Raman and XPS techniques. According to batch experiments, its adsorption equilibrium was reached within 40 min at pH 5.0. The adsorption isotherms was fitted well for Langmuir isotherm model and maximum adsorption capacity was 175.1 mg g −1 at 328 K. The thermodynamic analysis indicated that the adsorption was an endothermic and spontaneous process. Furthermore, the aerogel has superior absorption reusability and the removal efficiency was maintained at 78% after five adsorption–desorption cycles.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2019
·Vol. 11
·期 6
·985
·
IF 3.164
Yidong Liu,Lingfeng Jian,Tianhua Xiao,Rongtao Liu,Shun Yi,Shiyang Zhang,Lingzhi Wang,Ruibin Wang,Yonggang Min
CO2has been regarded as one of the most promising blowing agents for polystyrene (PS) foam due to its non-flammability, low price, nontoxicity, and eco-friendliness. However, the low solubility and fast diffusivity of CO2in PS hinder its potential applications. In this study, an attapulgite (ATP)/polypyrrole (PPy) nanocomposite was developed using the in situ polymerization method to generate the hierarchical cell texture for the PS foam based on the supercritical CO2foaming. The results demonstrated that the nanocomposite could act as an efficient CO2capturer enabling the random release of it during the foaming process. In contrast to the pure PS foam, the ATP/PPy nanocomposite reinforced PS foam is endowed with high cell density (up to 1.9 × 106) and similar thermal conductivity as the neat PS foam, as well as high compression modulus. Therefore, the in situ polymerized ATP/PPy nanocomposite makes supercritical CO2foaming desired candidate to replace the widely used fluorocarbons and chlorofluorocarbons as PS blowing agents.Keywords:supercritical CO2;polystyrene foam;blowing agent;in situ polymerization;attapulgite/polypyrrole nanocomposite
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Wei Liu,Danjun Wang,Razium Ali Soomro,Feng Fu,Ning Qiao,Yun Yu,Ran Wang,Bin Xu
Ceramic supported graphene oxide (GO)/Attapulgite (ATP) composite membrane (GOA) was simply prepared by vacuum filtration for efficient removal of heavy metal contamination. The ATP nanorods were incorporated within the laminar layers of GO, influencing the interlayer distance and facilitating greater number of channels for enhanced water transportation. The GOA possessed greater surface wettability with improved water flux rate of 6.3 L m −2 h −1 compared to 0.4 L m −2 h −1 measured for its pristine counter-part. The GOA demonstrated excellent rejection efficiency (nearly 100%) for heavy metal ions such as Cu 2+ , Ni 2+ , Pb 2+ and Cd 2+ . The excellent separation efficiency of GOA could be ascribed to the synergic combination of size exclusion effect based on the formation of 3D network structures between the GO layers and increased electrostatic interaction in between the negatively charged surface moieties of GOA and heavy metal ions. More importantly, the use of Al 2 O 3 as a support substrate resulted in improved stability and allowed extended usage of the membrane for a period of 3500 min while maintaining 99% rejection efficiency for Cu 2+ ions. The high flux rate, great water stability and prominent rejection capability of the designed membrane is suggestive of its practical application in removal of heavy metal contamination from water.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE FORUM
·
2017
·
IF 0
Ye Kai Zhu,Da Jun Chen
Attapulgite (AT)-based nanofibrous membranes (NFMs) were fabricated via a facile papermaking procedure, and the AT-based NFMs were sintered at three different temperatures (240 °C, 400 °C, and 600 °C). The effect of sintering temperature on the structure and properties, such as specific surface area, pore size distribution, porosity, mechanical property, pure water fluxes of AT-based NFMs, were investigated. The results showed that average pore size, total pore volume, and porosity of AT-based NFMs increased with increasing of the sintering temperature, while specific surface area and flexural strength of AT-based NFMs decreased. The optimal sintering temperature for AT-based NFMs was 400 °C. In addition, it was also found that the swelling degree of AT-based NFMs in aqueous solutions was suppressed and the pure water fluxes of AT-based NFMs were improved by sintering process.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
POLYMER COMPOSITES
·
2016
·Vol. 39
·期 2
·560-568
·
IF 2.004
Yang Xia,Yuanchao Zhu,Yifeng Zhou,Wangyan Nie,Pengpeng Chen
Attapulgite (ATT) is a one-dimensional (1D) nanorod which shows great potential as an effective filler for enhancing polymers. However, natural ATT is hard to develop its nanoscale reinforce advantages because it always tend to aggregate in the matrix. In this work, hybrid filler composed of ATT nanorods attached on two-dimensional (2D) graphene oxide (GO) nanoplatelets was prepared through electrostatic assembly, and then introduced into polypropylene (PP) matrix using melt blending method. A better dispersion of ATT in PP matrix was obtained with the aid of GO nanosheets. The tensile strength, Young's modulus and storage modulus of PP composites were improved simultaneously. Taking GO as an assistant-dispersant is believed to be a novel design strategy and effective approach for developing high performance nanocomposites. POLYM. COMPOS., 39:560–568, 2018. © 2016 Society of Plastics Engineers
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 53
·期 3
·2054-2064
·
IF 2.599
Lan Ye,Chen Dajun
Silica-based material is regarded as one of the most potential anode materials for lithium ion batteries (LIBs) because of its high specific capacity, low discharge potential, and inexpensive cost. However, low conductivity and poor mechanical property block its practical application. In this work, we adopted a facile method to prepare attapulgite (AT)/polyacrylonitrile (PAN) aerogel precursor and then the precursor was pre-oxidated and carbonized. The natural porous AT with nanofiber structure was used to provide high specific capacity. In addition, PAN was introduced to improve mechanical performance and enhance the electrochemical conductivity. This feasible method could form in situ continuous carbonized phase network structure, which impeded large volume expansion and improved electrochemical performance. As active anode materials of LIBs, the carbonized AT-based aerogels exhibited average discharge capacity of 534.6 mAh g −1 at 100 mA g −1 after 50 cycles and Coulombic efficiency reached over 97%. Overall, the fabrication approach is cost-effective and can be used on a large scale, which may fully take advantage of low-cost AT clay and PAN.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2022
·Vol. 12
·期 6
·669
·
IF 4.501
Peiguo Zhou,Zongbiao Dai,Tianyu Lu,Xin Ru,Meshack Appiah Ofori,Wenjing Yang,Jiaxin Hou,Hui Jin
The water pollution caused by industry emissions makes effluent treatment a serious matter that needs to be settled. Heterogeneous Fenton oxidation has been recognized as an effective means to degrade pollutants in water. Attapulgite can be used as a catalyst carrier because of its distinctive spatial crystal structure and surface ion exchange. In this study, iron ions were transported on attapulgite particles to generate an iron-supporting attapulgite particles catalyst. BET, EDS, SEM and XRD characterized the catalysts. The particle was used as a heterogeneous catalyst to degrade rhodamine B (RhB) dye in wastewater. The effects of H2O2concentration, initial pH value, catalyst dosage and temperature on the degradation of dyes were studied. The results showed that the decolorization efficiency was consistently maintained after consecutive use of a granular catalyst five times, and the removal rate was more than 98%. The degradation and mineralization effect of cationic dyes by granular catalyst was better than that of anionic dyes. Hydroxyl radicals play a dominant role in RhB catalytic degradation. The dynamic change and mechanism of granular catalysts in catalytic degradation of RhB were analyzed. In this study, the application range of attapulgite was widened. The prepared granular catalyst was cheap, stable and efficient, and could be used to treat refractory organic wastewater.Keywords:iron-bearing attapulgite;heterogeneous Fenton;granular catalyst;rhodamine B
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 56
·84410-84420
·
IF 5.19
Chen Anwen,Liu Wei,Soomro Razium Ali,Wei Yi,Zhu Xun,Qiao Ning,Kang Yueqi,Xu Bin
Graphene oxide (GO) is an excellent membrane-forming material with unique two-dimensional transport channels and excellent adsorption properties for heavy metal contaminants. However, swelling under cross-flow conditions and long-term water immersion leads to poor separation performances. To improve the stability of GO membrane materials, we propose a PVA-integrated graphene oxide/attapulgite membrane (GOAP) with a 3D microstructural arrangement of “brick–mortar-brick.” The addition of PVA as mortar reinforces the strength of the structures via induced hydrogen bonding within the 3D water transport network. Furthermore, the Al 2 O 3 ceramic substrate pre-treated with (3-aminopropyl) triethoxysilane (APTES) provided high mechanical stability to the composite membrane, extending the membrane’s stability beyond a month of immersion without swelling or shedding. The PVA-integrated GO/ATP composite membrane maintained a rejection rate of 99% for Cu 2+ solution (100 mg/L) in a 26-h continuous with nearly 100% rejection for various metals ions such as Cu 2+ , Ni 2+ , Pb 2+ , and Cd 2+ . The membrane exhibited a water flux of 20.7 L·m −2 ·h −1 , which was 15.9-fold high than the pure GO membrane (GOM). The high water flux and heavy metal filtration rate with superior stability proved the practical suitability of the composite film for removing heavy metal ions. Graphical abstract
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Bichen Wang,Liangliang Huang,Tao Peng,Rui Wang,Jun Jin,Huanwen Wang,Beibei He,Yansheng Gong
Construction of hierarchical architecture with suitable band alignment for graphitic carbon nitride (g-C 3 N 4 ) played a pivotal role in enhancing the efficiency of photocatalysts. In this study, a novel attapulgite-intercalated g-C 3 N 4 /ZnIn 2 S 4 nanocomposite material (ZIS/CN/ATP, abbreviated as ZCA) was successfully synthesized using the freeze-drying technique, thermal polymerization, and a simple low-temperature hydrothermal method. Attapulgite (ATP) was intercalated into g-C 3 N 4 to effectively regulate its interlayer structure. The results reveal a substantial enlargement of its internal space, thereby facilitating the provision of additional active sites for improved dispersibility of ZnIn 2 S 4 . Notably, the optimized photocatalyst, comprising a mass ratio of ATP, g-C 3 N 4 , and ZnIn 2 S 4 at 1:1:2.5 respectively, achieves an outstanding hydrogen evolution rate of 3906.15 μmol g −1 h −1 , without the need for a Pt co-catalyst. This rate surpasses that of pristine g-C 3 N 4 by a factor of 475 and ZnIn 2 S 4 by a factor of 5, representing a significant improvement in performance. This significant enhancement can be primarily attributed to the higher specific surface area, richer active sites, broadened light response range, and efficient interfacial charge transfer channels of the ZCA composite photocatalyst. Furthermore, the Z-scheme photocatalytic mechanism for the sandwich-like layered structure heterojunction was thoroughly investigated using diverse characterization techniques. This work offers new insights for enhancing photocatalytic performance through the expanded utilization of natural minerals, paving the way for future advancements in this field.
研究领域:
材料科学
·
能源化学
·
环境科学
✓ 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）